B8 S4 / S5 Supercharger Belt Size and Part Number Thread ....

[bhvrdr]

I thought i'd make an easily searchable thread to outline the supercharger belt sizes for various pulley configurations now that we are experimenting more. For those that have more knowledge, please help fill in the blanks.




Stock Pulleys

Pulley Combo--------effective length-------------part number

162.06/63.25 ------ 1270mm -------- 7PK1270 ------ 06E903137AB (stock belt)

162.06/63.25 ------ 1272mm ------- Gates K070500 (standard) or K070500RPM (stronger)





Single Supercharger Pulley Upgrade:

Pulley Combo----------effective length-------------part number

162.06/~57 ------ 1270mm -------- 7PK1270 ------ 06E903137AB (stock belt)

162.06/~57 ----- 1272mm ------- Gates K070500 (standard) or K070500RPM (stronger)





Single Crank Pulley or Dual (Upper and Lower) Pulley Upgrade:

Pulley Combo----------effective length-------------part number


179 - 183mm------------1290mm----------Continental 7PK1290
179 - 183mm------------1291mm----------Gates K070508 (standard) or K070508EMD (stronger)


18x - ???mm------------???????????---------????


19x - 19x???mm---------1325mm----------7PK1325 - Gates (ebay online from ireland, UK, etc)


200-20x???mm-----------1340mm----------k060525 - or k060525hd (stronger - 6 rib) - Gates
200-20x???mm------------1345mm----------7PK1345 - Dayco or Gates





Notes:
Bando K070508 is 7PK1300 and 1300mm effective length
7PK1300 from Gates RPM??? Cant find part number
7PK1310 from Gates RPM??? Cant find part number

[Loe]

Awesome thread!

My current combo:

57.55mm upper pulley
183mm lower pulley

Continental 7PK1290

[whiped]

I agree, great idea! I'd put it in a [code] tag or [table] though.

PM me your email if you want access to the google sheet with the pulley sizes on it.

@Loe, how tight is your belt? The crude math I did about a month ago when this topic came up in the DP thread would make your belt super tight!

[Q5OnTheMove]

I assume this works also for Q5 as we share the same engines.


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[Loe]

I agree, great idea! I'd put it in a [code] tag or [table] though.

PM me your email if you want access to the google sheet with the pulley sizes on it.

@Loe, how tight is your belt? The crude math I did about a month ago when this topic came up in the DP thread would make your belt super tight!

its very very very tight. did I mention very very very tight?

[Loe]

previous set-up:

57.55mm upper pulley
194mm lower pulley

Gates 060520 (6PK1325)

I can't recall what came with my JHM 179mm though...

[Jflow23]

57mm upper pulley
194mm lower pulley

Continental Contitech (7PK1325) EBay from Aus

[bhvrdr]

Thanks fellas! Keep the data coming.

Mike

[tars9]

Just picked up APR's 187mm lower pulley to use with the CTS 57.02mm upper pulley. APR sells it with a 7PK1300 belt to use with their 57.75mm upper pulley. Thinking/hoping that the .73mm difference won't have too much impact and I can run the 7PK1300 belt without any problems/slippage.

[whiped]

Arin told me it was a 1320.

I run a 1310 with the cts pulley and 186mm crank. This should also work for you.

I'm using a 6-rib belt I got off Amazon while waiting on my 7-rib to come in the mail.

BTW, here is all the information you could want about pulleys: https://docs.google.com/spreadsheets/d/1EvW8roNSYot_YYTeqKOHIREycLTlxWXLTyX8F25RI8c/edit#gid=0

[tars9]

Arin told me it was a 1320.

I run a 1310 with the cts pulley and 186mm crank. This should also work for you.

I'm using a 6-rib belt I got off Amazon while waiting on my 7-rib to come in the mail.

BTW, here is all the information you could want about pulleys: https://docs.google.com/spreadsheets/d/1EvW8roNSYot_YYTeqKOHIREycLTlxWXLTyX8F25RI8c/edit#gid=0

Whiped,

Thanks for the info. I've been looking at that pulley sheet for months but had somehow missed that belt size was at the bottom. Thanks!

I called him the APR dealer and it seems like I did get the right belt...which is confusing based on that spreadsheet. Seems like it's going to be a REAL tight fit. Might just order a 1320 as well. Would hate to get to that point and find out I need a different belt.

[kelseysautobody]

I've been running a Continental Elite 4060525 (6PK1335) on my 200mm crank and stock sc pulley. The first week it was on it was a little noisy but has sense broken in and quieted down. No slipping issues whatsoever.


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[AmrS4]

@bhvrdr when you say "stronger" are you assuming tighter belt? Like I mentioned in a thread I made about me having issues with belt slippage with my CTS pulley (7pk1270) belt I think since I'm going to swap belts go for something a little more tighter.

[cjw]

I have a Gates K080510 belt. Same as a 1310 in length?

Where's that best place to buy these?

[Trent212]

FD 179 with a gates RPM 7pk1300

[Charles]

I've been running a Continental Elite 4060525 (6PK1335) on my 200mm crank and stock sc pulley. The first week it was on it was a little noisy but has sense broken in and quieted down. No slipping issues whatsoever.


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You ran a 6 rib belt so you didn't have to trim that metal boss on the block?

[Kai@EliteMS]

Here is some more info

RS100001 APR Part # Belt, 7PK1270 (Just APR SC Pulley)

RS100002 APR Part # Belt, 7PK1320 (Both APR Pulleys Crank & Supercharger)

RS100003 APR Part # Belt, 7PK1300 (APR crank pulley with OEM SC pulley)

[whiped]

I have a Gates K080510 belt. Same as a 1310 in length?

Where's that best place to buy these?

1310 is the outside length, we are all using the inside length aka effective length

The Gates K080510 is 1294mm. (As claimed by Gates)

(08 Ribs, 05.10" effective length)

(Note: Gates, puts effective length in inches. Your belt's effective length is 5.10" => 1295mm)

I bought my 6pk on Amazon: https://www.amazon.com/gp/product/B0049BNJDG/ OR https://www.amazon.com/Gates-K060516HD-V-Belt/dp/B001R5W4EC/ (Note: these are both Heavy-Duty(HD) belts)
I bought my 7pk on from Issam: http://www.vdamper.com/GATES-RPM--7PK1310-7-RIB_p_91.html

[kelseysautobody]

You ran a 6 rib belt so you didn't have to trim that metal boss on the block?

No, I definitely still had to grind the metal boss but a 7 rib 1335 or 1340 wasn't readily available. I was going to order one off ebay uk or somewhere but the 6 rib has been working fine. If it ain't broke don't fix it right? You just have to make sure the belt is sitting on the same set of ribs on the three pulleys. I would imagine if it was on the inner ribs on one and the outer ribs on the next pulley it would chew the belt up pretty quick.

[bhvrdr]

I run a 6 rib as well. I just havent needed to go to a 7 rib. I have no slip at all. And Yes I actually could have avoided grinding the nub on the engine with the 6 rib belt. A couple folks have done that.

Mike

[cjw]

Thank you.

The google docs list above shows a 1310 wth a 183/184mm, but if I'm running a something a bit short perhaps a 1300 would be a better choice.

Also, is the Gates RPM largely superior to a standard belt - being in Canada, some of these models are a bit tough to find. I have a spare K080510 just in case, but if the RPM would last longer and less likely to slip, then perhaps I should go that way. I would just need to detemrine if a 1300 is a better choice than a 1310.

[bhvrdr]

@bhvrdr when you say "stronger" are you assuming tighter belt? Like I mentioned in a thread I made about me having issues with belt slippage with my CTS pulley (7pk1270) belt I think since I'm going to swap belts go for something a little more tighter.

The "HD" belts are more heavy duty belts supposedly for tractors so they are actually stronger but you are right, they happen to be tighter too. I didnt know this until I was comparing two identical part number ones that are are supposed to be the same length and I couldnt for the life of me get the HD one on the car. I put them up to each other and sure enough the HD one is at least 3/4 inch shorter. Go figure.

[whiped]

Thank you.

The google docs list above shows a 1310 wth a 183/184mm, but if I'm running a something a bit short perhaps a 1300 would be a better choice.

Also, is the Gates RPM largely superior to a standard belt - being in Canada, some of these models are a bit tough to find. I have a spare K080510 just in case, but if the RPM would last longer and less likely to slip, then perhaps I should go that way. I would just need to detemrine if a 1300 is a better choice than a 1310.

That table was generated using crude math and a small sample set so is not the most accurate thing. 1300 should be close enough IMO, better too small than big.

[AmrS4]

The "HD" belts are more heavy duty belts supposedly for tractors so they are actually stronger but you are right, they happen to be tighter too. I didnt know this until I was comparing two identical part number ones that are are supposed to be the same length and I couldnt for the life of me get the HD one on the car. I put them up to each other and sure enough the HD one is at least 3/4 inch shorter. Go figure.

do you think I could go with a tighter 7pk1270 alternative? will it even fit ?

[BG SQ5]

Here is some more info

RS100001 APR Part # Belt, 7PK1270 (Just APR SC Pulley)

RS100002 APR Part # Belt, 7PK1320 (Both APR Pulleys Crank & Supercharger)

RS100003 APR Part # Belt, 7PK1300 (APR crank pulley with OEM SC pulley)

Why would 57/187 take a longer belt than 63/187? APR s/c pulley is less diameter than stock s/c pulley, so the belt should be shorter when paired with the same crank pulley. The amount of conflicting belt info for APR is astounding here.

[whiped]

APR is 1320.

My table above should give you a good estimation.

FWIW the tensioner can pick up quite a bit of slack.

I run a 6PK1310HD with my 57/186

[derek.kritz]

Hmm. I'm on a 1285 Goodyear gatorback on a CTS and 183. Tight, but no slippage and no noise. I'm seeing these 1300-1320's. Loose no?? You guys aren't seeming any slipping with that big of size??


2010 Audi S4 DSG EPL DP 183mm full E85.

[BG SQ5]

APR is 1320.

My table above should give you a good estimation.

FWIW the tensioner can pick up quite a bit of slack.

I run a 1310 with my 57/186
APR has 3 sizes, and the smallest is for the 2 smallest pulleys (APR s/c and OEM crank). I think those are the only things we can agree on at this point. Of those 3 sizes I find it EXTREMELY hard to believe the largest size isn't for the two largest diameter pulleys (stock s/c and APR crank). Arin simply saying "1320 rings a bell" is by no means a confirmation or gospel to go on when referencing a specific setup. Sure- 1320 probably does ring a bell...for the setup with the two largest pulley diameters, and thus, the largest needed belt. Also, I think Elite's post here is wrong. It defies all logic...even the p/n sequence seems odd as they listed it.

I'm not sure how you came up with your belt length calculation in your table, but it looks like some kind of 3rd order polynomial fit based on the crank pulley and something I don't recognize for the s/c pulley??

Btw- if you were the original creator of the pulley spreadsheet- thank you! I downloaded it last summer, modified it to my liking, and have referenced it a lot since then. I've added my own calculation for the belt sizing now too. It's simply based on wrap angles and basic circumference calculations.

[xpoweruk]

No slip as yet from this combo,no squeal in the mornings etc

57.65 Revo charger pulley

181mm crank pulley

Contitech 7PK1290 belt

[Sprint_s4]

Hey guys,

Using a cts supercharger pulley and 184mm crank pulley.

7PK1290 seems to be too tight.

Should we go with a 7PK1300 belt ??

Thanks

[sirsycott]

Hey guys,

Using a cts supercharger pulley and 184mm crank pulley.

7PK1290 seems to be too tight.

Should we go with a 7PK1300 belt ??

Thanks

you know my kit came with a 1300 belt, when i came to the installer (Thomas@ emmanuele design)

he's done a few kits and said that that 1300's are garbage, i later checked and he used a 1290 belt , which looks to be the perfect fit on the 183mm

[Sprint_s4]

Hi,

Off brand 1290 belt was actually shorter when measured to a continental 1290. Figure that one out. Fit perfectly this time.


Thanks for your reply!

[Loe]

AWE 57.55 upper
Fluidampr 187

Belt Gates RPM 7PK1300

It's a tight fit, but works if you slip the belt over the tensioner last.

I have a 194mm coming, I'm going to try to install it temporarily with a 6PK1306 until I can secure a 7PK1310.

[whiped]

I have an extra 7PK1310 sitting around if you are not able to find one. I was told to hold onto it for when I go bigger [>_<]

CTS 57 upper
KI 186 lower

Gates RPM 7PK 1300

It is pretty much perfect for this setup.

[Loe]

I have an extra 7PK1310 sitting around if you are not able to find one. I was told to hold onto it for when I go bigger [>_<]

CTS 57 upper
KI 186 lower

Gates RPM 7PK 1300

It is pretty much perfect for this setup.

is it the Gates RPM version?

[whiped]

Yessir

[Loe]

Yessir

I may take you up on that, trying to locate one locally. Wouldn't mine having a back-up regardless in case it shreds

[[waZZup]]

I've got 187mm crank and 60mm s/c pulleys (quite exotic config, yeah)
Installed Gates K070508 which was sold as 7pk1300, box marked as 7pk1290, but in fact it was longer than another Micro-V 7pk1300. That kind of magic =D

So, there seems to be a total mess in belt sizes and probably APR's 1320 is actually not 1320 at all. I've got a crank of APR size and s/c which is close to their (I believe 60 vs ~58 don't make much sense) and 1320 belt which I've also tried (Meyle) was huge for this setup.

So, K070508 installed on my pulleys in a way that the tensioner is fixed in its last position. That's not very healthy way, so I've ordered a 7pk1310 here today: http://www.vdamper.com/GATES-RPM--7PK1310-7-RIB_p_91.html
Hope 1310mm is really an effective length and not the outer one. Has anyone tested this one?

[KimmoL]

Hope 1310mm is really an effective length and not the outer one. Has anyone tested this one?

Found here. (http://www.audizine.com/forum/showthread.php/708486-EPL-B8-B8-5-Owners-Discussion-Thread?p=12001814&viewfull=1#post12001814)

GATES RPM 7PK1300 – Exact Effective Length is 1301.2 mm.
GATES RPM 7PK1310 – Exact Effective Length of 1311.2 mm

[Loe]

AWE 57.55 upper
Fluidampr 187

Belt Gates RPM 7PK1300

It's a tight fit, but works if you slip the belt over the tensioner last.

I have a 194mm coming, I'm going to try to install it temporarily with a 6PK1306 until I can secure a 7PK1310.

update, the belt that a local friend let me borrow wasn't a 6pk1306 belt, he was just using the cover off of one and is actually a Gates RPM 7pk1310. Fits fine, nothing too tight actually.

[maty360414]

EPL 57.60 upper
JHM 179

Which belt should i use? the one that came with JHM Pulley or is that one for the stock SC Pulley

[whiped]

With the JHM pulley.

The other one likely wouldn't fit over.

Off the top of my head, it should be something around 1290mm.

[maty360414]

With the JHM pulley.

The other one likely wouldn't fit over.

Off the top of my head, it should be something around 1290mm.

will the continental 1290mm will fit the 1300mm according to the chart

[Acejam]

Here is some more info

RS100001 APR Part # Belt, 7PK1270 (Just APR SC Pulley)

RS100002 APR Part # Belt, 7PK1320 (Both APR Pulleys Crank & Supercharger)

RS100003 APR Part # Belt, 7PK1300 (APR crank pulley with OEM SC pulley)

This information did not make sense to me as the belt sizes don't seem to align with the hardware. I ended up emailing APR and was happy to learn this post is in fact incorrect and the sizes are mixed up. Confirmed information from APR support is below.


To clarify RS100001 is 7PK1270, the RS100002 belt is a 7PK1300 and the RS100003 is a 7PK1320.

We recommend using Gates belts as we’ve discovered some differences in length from other manufactures despite them all sharing the same 1270,1300, and 1320 sizes.

[BG SQ5]

This information did not make sense to me as the belt sizes don't seem to align with the hardware. I ended up emailing APR and was happy to learn this post is in fact incorrect and the sizes are mixed up. Confirmed information from APR support is below.

Yup- post #28...


Also, I think Elite's post here is wrong. It defies all logic...even the p/n sequence seems odd as they listed it.

[Acejam]

Yup- post #28...

think != confirmed [:)] [drive]

[street2gen]

63.25 upper
189 KI lower
Google Docs showing 1310
Can confirm a 1310 now

[whiped]

63.25 upper
189 KI lower
Google Docs showing 1310
Apr 187 looks to be using a 1320 am i reading that correctly?
anybody else confirmed this setup?

1310 should be perfect.

[cspcrx]

Where are you guys getting the Gates RPM 7pk 1300s from?

I called them today and they said the next size up that got close to 1300 was their KO70505, stock is KO70500, at it measures 1298.58mm. The person at Gates said this belt was not offered in a RPM belt. Do you have the model/part number?

[whiped]

They will only sell the belts through Issam. I've reached out directly to their racing division in the past [>_>]

http://www.vdamper.com/GATES-RPM--7PK1300-7-RIB_p_90.html
http://www.vdamper.com/GATES-RPM--7PK1310-7-RIB_p_91.html

[chrisucf99]

I'm running the 7PK1300 with JHM 187 and APR SC pulley.

[cspcrx]

Thanks guys, I have a 184mm pulley coming. Been bouncing between the 1300 or a 1290 for this pulley. Seems both have been used for the 183/184 pulleys.

[RWD2quattro]

They will only sell the belts through Issam. I've reached out directly to their racing division in the past [>_>]

http://www.vdamper.com/GATES-RPM--7PK1300-7-RIB_p_90.html
http://www.vdamper.com/GATES-RPM--7PK1310-7-RIB_p_91.html

Last time I placed an order there was a fiasco and ended up with wrong belt... You saved my hide [up]

[ModItNow]

Thanks guys, I have a 184mm pulley coming. Been bouncing between the 1300 or a 1290 for this pulley. Seems both have been used for the 183/184 pulleys.
I have a 57.75/183 pullies with gates rpm 1300 for 14,000 miles now without one issue

Sent from my S9+

[cspcrx]

Thanks mod I will order a 1300.

[ModItNow]

Thanks mod I will order a 1300.
[emoji106]

Sent from my S9+

[Dkensk]

Any one used the SRM plates with 57/183 combo? If so which belt did you choose?

[cspcrx]

1300 seems to be the right belt for the 183/184 based on what I have read

[Dkensk]

I have the 1300 but I'm going to be adding the SRM methanol plates.

[[waZZup]]

I have the 1300 but I'm going to be adding the SRM methanol plates.

I think you can approximately calculate it as 1300 + <plate height> * 2 and round to next bigger available belt size

[DufraineMK6]

Just to add I have the Jhm 179 lower pulley and stock upper. The belt jhm supplied did not fit. Not even close. Inquiries to JHM produced jack shit. Required a 1300mm gates belt found on amazon.


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[kelseysautobody]

If anyone is running a 200mm crank with OE sc pulley there’s finally an easy to get 7PK1340 on amazon. Installed it yesterday and it was tight but went on without issue. Initially it was pretty loud but now seems no louder than the Gates 6 rib fleet runner I had been using. That lasted only 8k miles before it started squeaking.

https://www.amazon.com/K070528-DAYTONA-Serpentine-Manufacturer-Quality/dp/B06Y55DWMB


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[FlyS4]

Hello, I have a slightly used Gates RPM belt for sale and 183 mm FD pulley ring. Pm me if you want it.
64499

[evil35r]

What is the correct size belt I need for a cts sc pulley and 180 cts cp? They sent me a 1300 but reading it looks like should use a 1290...

[evil35r]

Bump anyone? Need a part number. Is it best to go with Gates rpm or is continental 7pk1290 fine???

[whiped]

I'd check with the guys running a 179mm setup and run that.

I think it was a 1290

[evil35r]

Yea that’s what I’ve been reading I just bought a Conti 1290

[wangshuo1989]

I just bought a CTS 180 crank pulley and planning to use it with OEM supercharger pulley, which belt size should I use?

[wangshuo1989]

Update from my installer, 1290/1291 belt is too short for 180 crank pulley + OEM SC pulley, 1300 is the correct size to use. Maybe an update to the chart is needed?

[tastic]

Update from my installer, 1290/1291 belt is too short for 180 crank pulley + OEM SC pulley, 1300 is the correct size to use. Maybe an update to the chart is needed?

Which brand 1300 did you use?


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[wangshuo1989]

Which brand 1300 did you use?


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APR 7PK1300, I guess it's made by gates

[tastic]

APR 7PK1300, I guess it's made by gates

Thanks! Do you know if the 1290 your installer tried first was a continental or bando?


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[wangshuo1989]

Thanks! Do you know if the 1290 your installer tried first was a continental or bando?


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It's a gates that I bought from amazon, it's actually a 1291, but it was too tight

[Ski05751]

Anyone know what size belt fits a stock SC pulley with a KI 200mm crank pulley?

Just installed the new 200mm crank and the belt (7PK1325) supplied with it is to short.

Thanks

[bhvrdr]

Anyone know what size belt fits a stock SC pulley with a KI 200mm crank pulley?

Just installed the new 200mm crank and the belt (7PK1325) supplied with it is to short.

Thanks

k060525hd

[Ski05751]

k060525hd

The info I needed was in the first posts table. I just didnt understand how to read what I needed.

Thanks again for setting me straight.

[bhvrdr]

The info I needed was in the first posts table. I just didnt understand how to read what I needed.

Thanks again for setting me straight.

No worries. I just installed that belt. Its a 6 rib so if you install it on the front ribs you dont have to trim the metal boss on the engine.

Mike

[awwturbo]

Out of the blue I was inspecting the supercharger belt on my car this morning and noticed that there is a bit of play in the belt. I don't remember there being this much when I installed the belt a couple years ago. This is the belt that came with the JHM 179mm crank pulley and I think it's a Gates 7pk1290. I'll have to check it again when it's in a better location. Is this a concern? From all my logs I don't seem to be loosing boost due to belt slip, but I would think a belt that loose should slip? Could it be a failing tensioner? It's not making any weird sounds. I have the stock 1270 belt and whatever Bando belt came with the CTS charger pulley. Maybe try one of those to see if it fits tighter?


https://www.youtube.com/watch?v=nt5J2uU1708

[[waZZup]]

Looks like you apply quite a lot of pressure. It is a belt. Not a hawser. Moreover, it would be torn apart a hundred times already if you had it slipping.

[bhvrdr]

Youll see black dust all over the place it its slipping. Run your fingers around for it.

Mike

[awwturbo]

;13378285']Looks like you apply quite a lot of pressure. It is a belt. Not a hawser. Moreover, it would be torn apart a hundred times already if you had it slipping.

Makes sense. Just seems odd to me as I was pretty sure when I installed the belt it was much tighter feeling... Maybe the belt is just getting old.


Youll see black dust all over the place it its slipping. Run your fingers around for it.

Mike

I ran my fingers around and there was a slight trace of black dust. Barely noticeable with the dirt. Anyways, I ordered a Continental 7PK1290 belt. Wouldn't hurt to replace it as the belt on now looks pretty used.

[maty360414]

anyone running 1320 belt with SC Pulley & 187mm Crank with no problems?

[dillysd]

Current:
Stock
196.5 - XLR8

7K1325

57.02 - CTS
196.5 - XLR8

Have no idea, does anyone else have this setup?




2015 S4 DSG - CTS Intake, APR Stage 1 ECU, APR TCU, APR CPS, AWE Touring, AWE Res Pipes, 034 Trans/Diff/Subframe Mounts, RS Grille, RS Fog Grilles, ECS Boost Gauge, TSW Nurburgring 19x9.5

[Acejam]

anyone running 1320 belt with SC Pulley & 187mm Crank with no problems?

I ran this setup with a 7PK1310 at first. It worked, but I much prefer my current 7PK1300 setup, nice and tight.

[DeeDoubleYou]

does any one have a part number or recommend a good brand for a 1300 belt? all i see is bando branded belts and i cant find any continental ones that are a 1300. and i also I see that a 6 rib is fine for dual pulley or would you guys still recommend a 7 rib?

[vpls4]

Here is some more info

RS100001 APR Part # Belt, 7PK1270 (Just APR SC Pulley)

RS100002 APR Part # Belt, 7PK1320 (Both APR Pulleys Crank & Supercharger)

RS100003 APR Part # Belt, 7PK1300 (APR crank pulley with OEM SC pulley)

FYI This info is somewhat wrong

I just bought a 7PK1300 (only one in town) from an APR shop and the part# for it is: RS100002

[Jay@JXB]

Who wants to take a stab at this one?

Uni upper (58 mm)
206 lower

1335? 1340? 1345?


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[RWD2quattro]

I'm using a Bando 7PK1320 with 194mm lower and CTS upper, no issues so far. Prior to Bando I ran the Gates 7PK1325 and lasted 35k miles with no issues.

[ModItNow]

I'm using a Bando 7PK1320 with 194mm lower and CTS upper, no issues so far. Prior to Bando I ran the Gates 7PK1325 and lasted 35k miles with no issues.Good to know you haven't had any issues with the Bando! I've been hesitant to go up in Pulley size just because I wanted to keep my Gates belt, haven't had 1 issue in 25,000 miles.

What size would I run with a 57.75 and 203mm?

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[RWD2quattro]

^^I would say 7PK1340 but I haven't gone to a 203, way too much heat.

[Jay@JXB]

Good to know you haven't had any issues with the Bando! I've been hesitant to go up in Pulley size just because I wanted to keep my Gates belt, haven't had 1 issue in 25,000 miles.

What size would I run with a 57.75 and 203mm?

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I just picked up a 1340 and 1345 to try with my 206/58 combo. If the 1340 is too small it will be extra.


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[ModItNow]

^^I would say 7PK1340 but I haven't gone to a 203, way too much heat.Thanks Raf. Too big a pulley even with meth?

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[Loe]

My Gates 1345 is too big on my 57.55/203mm combo. Logs are showing boost drops above 6000rpm or inconsistent boost. Going to find a 1325 or 1330 to replace this 1345.

Not sure why my particular pulley set-up runs tight, it could be the idler pulley that came with my prior KI 194mm that is smaller? I mean, I used a 1310 for my 57.55/194mm combo, so in theory a 1325 would be the proper fit no?

[evil35r]

My Gates 1340 is too big on my 57.55/203mm combo. Logs are showing boost drops above 6000rpm or inconsistent boost. Going to find a 1325 or 1330 to replace this 1345.

Not sure why my particular pulley set-up runs tight, it could be the idler pulley that came with my prior KI 194mm that is smaller? I mean, I used a 1310 for my 57.55/194mm combo, so in theory a 1325 would be the proper fit no?

On my 196.5/57 1325 is super tight and barley gets on. With your bigger upper I’d honestly would try to find a 1330 I think 1325 may be too small.

Edit: tried to find a 1330 with no luck but I would try a 1335 before the 1325 as I think it will be too tight

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F20 2592812142

[RWD2quattro]

Is that belt on your link a micro v horizon?

[Akvdubn]

My Gates 1345 is too big on my 57.55/203mm combo. Logs are showing boost drops above 6000rpm or inconsistent boost. Going to find a 1325 or 1330 to replace this 1345.

Not sure why my particular pulley set-up runs tight, it could be the idler pulley that came with my prior KI 194mm that is smaller? I mean, I used a 1310 for my 57.55/194mm combo, so in theory a 1325 would be the proper fit no?Loe, you could try k080525rpm which is a gates 1335mm rpm belt but it's 8 rib. I talked to gates and they said cutting a rib off is totally okay as long as you cut it straight, and it won't affect the integrity of the belt

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[tx_revo]

Does anyone have a belt recommendation for use with a 187mm crank and stock s/c pulley?
I couldn't seem to find the answer in this thread, nor searching..

[sierraquattro]

need a belt size for 57.75mm sc pulley and 187mm crank pulley

searched on this thread and Geoff's belt size spreadsheet isn't working.

[Shane Horning]

need a belt size for 57.75mm sc pulley and 187mm crank pulley

searched on this thread and Geoff's belt size spreadsheet isn't working.A 7pk1310 fits great but currently I'm running a 7pk1300 on 57.2 and 187 but fits very tight

[kelseysautobody]

https://beltzoom.com/products/7pk1340-rib-ace-serpentine

Just installed this Bando 7PK1340 along with new roller and tensioner. Belt took a week to get here but it did come. Hopefully my car stops eating belts every 5k miles or less.

Running 200 crank, stock SC pulley.

[sierraquattro]

A 7pk1310 fits great but currently I'm running a 7pk1300 on 57.2 and 187 but fits very tight

I'm assuming that the more aggressive drivers need the tightest belt possible, correct?
Seems like the 7pk1310 would slip under heavy load. Thoughts on this?

[Shane Horning]

I'm assuming that the more aggressive drivers need the tightest belt possible, correct?
Seems like the 7pk1310 would slip under heavy load. Thoughts on this?Definitely get a gates belt. Bando belts are junk. Get a gates Rpm

[sierraquattro]

Definitely get a gates belt. Bando belts are junk. Get a gates Rpm

Is it me or is that belt hard to find? I’ve been searching locally, and a 7 rib, 1300-1310mm supercharger drive belt is not in stock. Where did you source yours?


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[Shane Horning]

Is it me or is that belt hard to find? I’ve been searching locally, and a 7 rib, 1300-1310mm supercharger drive belt is not in stock. Where did you source yours?


Sent from my iPhone using Audizine (http://r.tapatalk.com/byo?rid=87676)http://iabedindustries.com/. Did u check with these guys?

[sierraquattro]

http://iabedindustries.com/. Did u check with these guys?

I sure did... $49 + shipping (~$15) better be worth it lol!!


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[Shane Horning]

I sure did... $49 + shipping (~$15) better be worth it lol!!


Sent from my iPhone using Audizine (http://r.tapatalk.com/byo?rid=87676)It is. I would get the 1310

[Morritse]

Just installed my XLR8 196.5 and I have a 57mm

7PK1325 fit just barely, 7PK1335 is probably the one to use!

[Jk79]

Sorry, not a sizing question but figured since this was the belt thread it might be the best place. I bought a Gates RPM 7PK1310 when I upgraded my crank pulley to CTS 187. Fits great. But when I pulled it out of the package to install about 30% of one side was frayed. Appears to be brand new otherwise. I installed thinking after a few days those loose ends would come off. Still loooks the same, not getting any worse luckily. Is this something to worry about or ok?

https://www.audizine.com/gallery/data/500/medium/43EB1BFE-B671-4A0B-A188-1A7EE4B61228.jpeg

[Loe]

did you shave enough metal off? I wonder if its rubbing against the metal since its on the rear part of the belt?

[Jk79]

did you shave enough metal off? I wonder if its rubbing against the metal since its on the rear part of the belt?

Yeah I shaved it down with several mm to spare. Checked everything and it’s not rubbing. The belt actually came like that in the package and hasn’t gotten any worse. Thinking it just wasn’t cut cleanly from the factory and somehow made it to a vendor and I was the lucky one who got the gnarly belt. I should have cleaned it up before installing. I might pull it and do that I guess.

https://www.audizine.com/gallery/data/500/medium/574EC664-0C2B-48CC-9262-E20FA90B4B65.jpeg

[Spm58]

Has anyone bought the 7pk1301 on europaparts? Yes 1301, not 1310

[MSq5]

Just went dual pulley.

EPL 57.6mm supercharger pulley
JHM 187mm crank pulley

I wanted a Gates RPM 7pk1310 and have one ordered. In the interim, I wanted to go ahead with the install. I was able to locally source a Bando 7pk1300.

The Bando 7pk1300 fits just fine. While tight, there is still some adjustment range on the tensioner spring.

My question is this: The Bando belt is clearly labeled "Made in USA." Is this something new for them? I will replace this with the Gates RPM when it gets here, but I'm just curious as to whether this means increased reliability of the Bando belt. Should I still be concerned about reliability? I plan to keep it as a spare or backup once the RPM gets here.

[Chris@EPL]

Just went dual pulley.

EPL 57.6mm supercharger pulley
JHM 187mm crank pulley

I wanted a Gates RPM 7pk1310 and have one ordered. In the interim, I wanted to go ahead with the install. I was able to locally source a Bando 7pk1300.

The Bando 7pk1300 fits just fine. While tight, there is still some adjustment range on the tensioner spring.

My question is this: The Bando belt is clearly labeled "Made in USA." Is this something new for them? I will replace this with the Gates RPM when it gets here, but I'm just curious as to whether this means increased reliability of the Bando belt. Should I still be concerned about reliability? I plan to keep it as a spare or backup once the RPM gets here.

I think most 57mm and 187mm go with the Gates RPM 7PK1310.

[wes8398]

Does anyone have a belt recommendation for use with a 187mm crank and stock s/c pulley?
I couldn't seem to find the answer in this thread, nor searching..

4 Months late, but I'm also looking for the answer to this. 1310mm is my guess after reading all the comments here...?

[Jk79]

4 Months late, but I'm also looking for the answer to this. 1310mm is my guess after reading all the comments here...?

That is what I ran with stock upper and 187 lower. 1310 was nice and tight. Spend the extra bucks and get a Gates RPM.

[Jk79]

How tight is too tight? Do our tensioners have a range line? I didnt see one but not using service position.

I was running a 1310 with 187 crank and stock upper but after switching SC pulley to 57 I decided to try a 1300. It was super tight to get it on with the tensioner all the way over. Had to really grip it with pliers and almost stretch it to get it to fit.

Obviously loose would be an issue but what about too tight?

[wes8398]

That is what I ran with stock upper and 187 lower. 1310 was nice and tight. Spend the extra bucks and get a Gates RPM.

Thanks for the input.
Where'd you get your Gates RPM 1310? I can't seem to find one...?

[Jk79]

Thanks for the input.
Where'd you get your Gates RPM 1310? I can't seem to find one...?

http://www.vdamper.com/GATES-RPM--7PK1310-7-RIB_p_91.html

[wes8398]

http://www.vdamper.com/GATES-RPM--7PK1310-7-RIB_p_91.html

Thank you, sir!

[sierraquattro]

The Gates 7pk1310 belt I’m currently running got stretched to the max causing a lot of squealing. I may have gotten a defective belt, ya? Anybody on here ever experience that? Also, who’s running the APR supercharger and crank pulley setup and what belt are y’all running?


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[Morritse]

The Gates 7pk1310 belt I’m currently running got stretched to the max causing a lot of squealing. I may have gotten a defective belt, ya? Anybody on here ever experience that? Also, who’s running the APR supercharger and crank pulley setup and what belt are y’all running?


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Like this?
https://youtu.be/GT2SIg9XxoQ
Its happened to a lot of us. Belt might just be dirty. Try taking it off and flipping around it's likely the sound will go away.

[sierraquattro]

Like this?
https://youtu.be/GT2SIg9XxoQ
Its happened to a lot of us. Belt might just be dirty. Try taking it off and flipping around it's likely the sound will go away.

Not like that at all.
The belt has actually stretched some. After the belt was removed and cleaned, I noticed that it didn't take any effort to re-install it.
Normally, it would take one person to release the tension and one person to slip the belt over the supercharger pulley.
This time around, it only took one person. The tensioner is brand new btw.... Pretty interesting, ya?
I just ordered a Gates RPM 7pk1300 belt from ECS tuning.. I'm hoping for the best!

[Morritse]

Not like that at all.
The belt has actually stretched some. After the belt was removed and cleaned, I noticed that it didn't take any effort to re-install it.
Normally, it would take one person to release the tension and one person to slip the belt over the supercharger pulley.
This time around, it only took one person. The tensioner is brand new btw.... Pretty interesting, ya?
I just ordered a Gates RPM 7pk1300 belt from ECS tuning.. I'm hoping for the best!

The 1310 RPM is a super solid belt. I haven't really heard of this problem with it good luck getting the 1300 on.

[street2gen]

The 1310 RPM is a super solid belt. I haven't really heard of this problem with it good luck getting the 1300 on.

Should be fine, i have a 1300 on my cts 57/189

[sierraquattro]

The 1310 RPM is a super solid belt. I haven't really heard of this problem with it good luck getting the 1300 on.

For tight fitting belts, the two-person method is "tried-and-true." Luck has nothing to do with it LMAO!!

I agree, Gates RPM has a great reputation around these parts, so there must be an underlying issue that has caused it to stretch.

***Please note that I bought that Gates RPM 7pk1310 from a fellow AZ member for $10... Mad. Suspect.***


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[MSq5]

For tight fitting belts, the two-person method is "tried-and-true." Luck has nothing to do with it LMAO!!

I agree, Gates RPM has a great reputation around these parts, so there must be an underlying issue that has caused it to stretch.

***Please note that I bought that Gates RPM 7pk1310 from a fellow AZ member for $10... Mad. Suspect.***


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Aren’t you guys having to use the two person method locking the tensioner? You compress it all the way and push a nail through that hole. It stays compressed. Then, you route the belt and pull out the nail.

This does mean doing it from the bottom with the undertray off, but it’s just a one person job that way.

[Acejam]

Aren’t you guys having to use the two person method locking the tensioner? You compress it all the way and push a nail through that hole. It stays compressed. Then, you route the belt and pull out the nail.

This does mean doing it from the bottom with the undertray off, but it’s just a one person job that way.

Using the nail method works but that doesn’t open up the tensioner all the way. For max clearance you’ll want to open the tensioner with a wrench and slide on the belt at the same time. Since the wrench will be in the way this is why I always pre-route everything except for the top pulley.


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[Acejam]

The Gates 7pk1310 belt I’m currently running got stretched to the max causing a lot of squealing. I may have gotten a defective belt, ya? Anybody on here ever experience that? Also, who’s running the APR supercharger and crank pulley setup and what belt are y’all running?


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With a 57/187 setup you will want a 1300 belt. I run a Gates RPM 7PK1300 and have had zero issues. Unitronic, APR, IE, and CTS all use this belt size when shipping their dual pulley setups for 187/57. (Except it’s 188 for IE)


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[sierraquattro]

With a 57/187 setup you will want a 1300 belt. I run a Gates RPM 7PK1300 and have had zero issues. Unitronic, APR, IE, and CTS all use this belt size when shipping their dual pulley setups for 187/57. (Except it’s 188 for IE)


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The belt that came with the APR dual pulley kit squealed from day one. I replaced it with the Gates RPM 7pk1310 belt and it ran perfectly quiet until recently.


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[Acejam]

The belt that came with the APR dual pulley kit squealed from day one. I replaced it with the Gates RPM 7pk1310 belt and it ran perfectly quiet until recently.


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Belt size and brand/make/quality are two very different things. [emoji41]


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[sierraquattro]

Belt size and brand/make/quality are two very different things. [emoji41]


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EXACTLY... I discarded that Gates RPM 7pk1310 belt and I’ve been running their 7pk1300 ever since. It’s been over a week and I have no complaints. Thanks for the input, gents!!


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[Merlintwist]

Had a scan through this thread..
Currently using the Bando that came with my CTS 187 crank pulley, would I be right in thinking that a Gates RPM 7PK1310 would be the right size for this setup? Stock supercharger pulley, 187 crank.

No problem with the Bando so far but id like to have a replacement waiting just incase.

[VtotheJ]

Had a scan through this thread..
Currently using the Bando that came with my CTS 187 crank pulley, would I be right in thinking that a Gates RPM 7PK1310 would be the right size for this setup? Stock supercharger pulley, 187 crank.

No problem with the Bando so far but id like to have a replacement waiting just incase.

I have this same exact setup, stock SC pulley, 187mm crank pulley. Currently squealing like crazy with the APR RS100003 belt. Which belt would apply to us????????? Car has been in the shop for almost a week now. What is the part # for the Bando that is on your car now, @Merlintwist? Thanks

[doughboy17]

Can anyone with actual experience with a stock S/C pulley and 179mm crank pulley comment whether the a Gates K070508 (as recommended in post #1) will work? There is one or two conflicting posts in this thread, but JHM has advised that it is the belt that ships with their 179mm crank pulley and correct for combination with a stock S/C pulley. Thanks.

[VtotheJ]

I currently have stock SC pulley, 187mm crank pulley. So the shop replaced with the same belt as before (APR RS100003), since the others were out of stock. No chirping or squealing so far, but then again I don't drive that much during the week. It took a few thousand miles for the car to start squealing the last time I had the belt replaced. I will report back if it does it again.

[MSq5]

Can anyone with actual experience with a stock S/C pulley and 179mm crank pulley comment whether the a Gates K070508 (as recommended in post #1) will work? There is one or two conflicting posts in this thread, but JHM has advised that it is the belt that ships with their 179mm crank pulley and correct for combination with a stock S/C pulley. Thanks.

Follow JHM’s advice on the 179mm. That is a 7pk1290 belt. That is what I ran with my single pulley 179mm JHM before going dual pulley.

[SuitedUp2The9s]

I have had a hard time getting a Continental or Contitech 7pk1325. I took a chance on a seller in Latvia. I'm in Canada. April 18 ordered. Delivered yesterday and so you beautiful people have more information and part numbers to find your own as well I have attached pictures. 181524181525

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[Mike Literous]

Nice thread here.
I’ve just installed a JHM207mm crank pulley and running the standard supercharger pulley. JHM specifies a 1370mm belt so I got one in and is very noisey and the tension in the belt is not even 1/2 as tight as the accessory one is. In Australia I can get a 1360 and a 1345 then next size down is 1290!!! I’m going to try a 1345mm and hopefully this is the one to use. U couldn’t drive it with the noise the 1370 made Fingers crossed.

[Lance92]

So my crank pulley failed today so i am going to get the jhm lightweight 187mm pulley. I currently have the integrated engineering upper pulley which is 57mm. What would be the correct belt size for me to use?

[ANMS4]

Great thread but looks like only 1 person bought the belt I did :/ most have the 1320, I went with the K070508EMD (1305mm) . EPL SC pulley end IE crank pulley.

[RoofRails]

7PK 1300.
So my crank pulley failed today so i am going to get the jhm lightweight 187mm pulley. I currently have the integrated engineering upper pulley which is 57mm. What would be the correct belt size for me to use?

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[Jay@JXB]

Anybody done a 57/207 combo yet? 7PK1345? I have the Unitronic upper which is actually 58.2mm...


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[MSq5]

So my crank pulley failed today so i am going to get the jhm lightweight 187mm pulley. I currently have the integrated engineering upper pulley which is 57mm. What would be the correct belt size for me to use?

I’m running a 7pk1300 with that combo. Tight, but I went on just fine and has been on for almost a year, now. 1300 or 1310, whichever you can find, should work.

[Mike Literous]

With the 207 and the stock pulley I tried a few belts 7pk1370, 7pk1360 but can’t get them in Australia in a Gates brand. I had belt noise with all combos I got a 6pk1355 in a gates and no noise whatsoever but the 1355 was almost impossible to install. Needed 2 people and a strap under the belt to pull on.

The issue with the large pulley is 2 fold. The idler pulley runs very close (around 5mm) to the crank pulley so u have to put the belt in place first and do the final install on the supercharger pulley and 2/ you can’t push the tensioner on fully as it hits into the crank pulley. Ahh the problems of performance. Running a 6pk seems to work fine but ideally I’d want to run a 7pk to attest to any phantom belt slip. Do they make a 7pk1360 or 7pk1355 in a gates brand over in USA. Gates is the only one that eliminated belt noise

[Jay@JXB]

With the 207 and the stock pulley I tried a few belts 7pk1370, 7pk1360 but can’t get them in Australia in a Gates brand. I had belt noise with all combos I got a 6pk1355 in a gates and no noise whatsoever but the 1355 was almost impossible to install. Needed 2 people and a strap under the belt to pull on.

The issue with the large pulley is 2 fold. The idler pulley runs very close (around 5mm) to the crank pulley so u have to put the belt in place first and do the final install on the supercharger pulley and 2/ you can’t push the tensioner on fully as it hits into the crank pulley. Ahh the problems of performance. Running a 6pk seems to work fine but ideally I’d want to run a 7pk to attest to any phantom belt slip. Do they make a 7pk1360 or 7pk1355 in a gates brand over in USA. Gates is the only one that eliminated belt noise

Thanks for the advice. I saw your post up higher; seems like quite the pain to run this pulley. Makes sense why you end up with a bigger belt if you can’t release the tension all the way. There’s basically no gates belts in 7-rib in the US. Just ordered up a bunch of different belts from the EU, 7PK1335 up to 1360 at each increment. I’m not finding anything for a 1355.


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[MSq5]

With the 207 and the stock pulley I tried a few belts 7pk1370, 7pk1360 but can’t get them in Australia in a Gates brand. I had belt noise with all combos I got a 6pk1355 in a gates and no noise whatsoever but the 1355 was almost impossible to install. Needed 2 people and a strap under the belt to pull on.

The issue with the large pulley is 2 fold. The idler pulley runs very close (around 5mm) to the crank pulley so u have to put the belt in place first and do the final install on the supercharger pulley and 2/ you can’t push the tensioner on fully as it hits into the crank pulley. Ahh the problems of performance. Running a 6pk seems to work fine but ideally I’d want to run a 7pk to attest to any phantom belt slip. Do they make a 7pk1360 or 7pk1355 in a gates brand over in USA. Gates is the only one that eliminated belt noise

I didn’t see a 7pk1355 or 1360 in the US Gates catalog, but maybe I missed it. I did see a 7pk1355 in the Bando catalog. I may have mentioned this elsewhere, but when I went with my current setup, I couldn’t find a Gates locally. I did find a Bando and installed it while I waited on the Gates to get here. Bando is poo pooed by some here, but I decided to keep the Gates as a spare and see how the Bando did. Almost a year later it looks like brand new, no slippage, no fraying. I’m just a sample of one.

But, if Bando has something in your size, it is an option. Not to be provincial, and not wanting to stir up anything, I did notice country of origin on the belts. That may or may not speak to quality. Even so, the Bando belt is labeled “Made in USA”, the Gates labeled “Made in Mexico.” Go figure.

[ANMS4]

Great thread but looks like only 1 person bought the belt I did :/ most have the 1320, I went with the K070508EMD (1305mm) . EPL SC pulley end IE crank pulley.

Did not fit was too short, were the heck are you guys getting the 7PK1320 belts?

[Jay@JXB]

58.2/207 (Unitronics/JHM). Gates RPM 1345 just barely snuck on. Had to hold the tensioner, hold the belt on, then walk it on by turning the crank with the crank turning socket.

This would also be the belt for a 57.X/207. With a stock upper I’d guess a 1350 is the way to go, but take someone’s word who actually did it over mine.

Tensioner is limited in travel with the 207. Also the 207 actually interacts with that engine nub itself, so even though I had already ground it down for belt clearance, I didn’t grind it even and had to go further because the pulley was hitting it.

Nub:
https://uploads.tapatalk-cdn.com/20200714/170ce780f6e0c3f6e652df70151400c2.jpg

Tensioner at rest once installed:
https://uploads.tapatalk-cdn.com/20200714/423f6e26d8bfa57481ab7e91f8f8e107.jpg

https://uploads.tapatalk-cdn.com/20200714/d0e241a46311ea0a08bc6123d0247be3.jpg


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[Mike Literous]

Yes the 207 crank pulley is a tight fit. With the stock pulley on the supercharger. There is no way I could get a 1345 on. The only way I could get the 1355 on was to use a ratchet strap to heave the belt over the supercharger pulley while someone else was maxing our the tensioner

[denokarter]

With a upgraded upper pulley and 190mm 034 crank pulley, is the continental belt the 034 crank pulley comes with good enough? Or should I get a gates 7pk1310 belt

[djn876]

The continental belts I think generally hold up well, the gates RPM will also perform very well, I think you'd be fine with either.

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[denokarter]

The continental belts I think generally hold up well, the gates RPM will also perform very well, I think you'd be fine with either.

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Thanks man
Everyone seems to be putting the 1310 gates belt and I don’t know why... 034 gives you a belt with the crank pulley, no need to change it fits perfect.

[djn876]

The gates RPMs are really good, but I was just talking to Issam since I'm looking at getting a 194 and there is not Gates RPM in that size, he said the continental 1325 belts he uses for that size have overall been pretty reliable.

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[TheGreatDecay]

Thanks man
Everyone seems to be putting the 1310 gates belt and I don’t know why... 034 gives you a belt with the crank pulley, no need to change it fits perfect.

Just a heads up - 034 sent me a 1320 Bando with my 190/57.5 setup. So I too just grabbed a 1310 Gates. Fits tight but well

[denokarter]

Just a heads up - 034 sent me a 1320 Bando with my 190/57.5 setup. So I too just grabbed a 1310 Gates. Fits tight but well

A 1320 should be the perfect fit for your pulley ratio if I’m not mistaking.. why did you go smaller ?

[Shane Horning]

A 1320 should be the perfect fit for your pulley ratio if I’m not mistaking.. why did you go smaller ?Probably because he wanted an rpm belt and they dont offer a 1320

[TheGreatDecay]

Probably because he wanted an rpm belt and they dont offer a 1320

Exactly. It’s a tight fit but wasn’t that hard to slip it over the tensioner easy enough.

I do trust 034s engineering and recommendations for just about everything but after seeing so many posts regarding Bandos poor quality, and nothing but good things on the Gates RPM I figured this was a no brainer.

My assumption is they probably just give Bandos with their kit for cost/inventory reasons but didn’t figure it was really worth the time to inquire over it

[denokarter]

Exactly. It’s a tight fit but wasn’t that hard to slip it over the tensioner easy enough.

I do trust 034s engineering and recommendations for just about everything but after seeing so many posts regarding Bandos poor quality, and nothing but good things on the Gates RPM I figured this was a no brainer.

My assumption is they probably just give Bandos with their kit for cost/inventory reasons but didn’t figure it was really worth the time to inquire over it

I asked 034 and they literally said “ we have been using our continental belt for years now without any issues”. No shredding of belts or anything. Slippage is probably the same across. My biggest worry with belts is that it’s too tight or too lose, otherwise you shouldn’t have a problem with a belt that’s fitted right.

I would rather use 034’s belt that fits perfectly than a belt that might be stronger but is a tight fit and might stretch

[Shane Horning]

I asked 034 and they literally said “ we have been using our continental belt for years now without any issues”. No shredding of belts or anything. Slippage is probably the same across. My biggest worry with belts is that it’s too tight or too lose, otherwise you shouldn’t have a problem with a belt that’s fitted right.

I would rather use 034’s belt that fits perfectly than a belt that might be stronger but is a tight fit and might stretchWow ok I can tell you have little to no experience with this platform. I have run a dozen different belts and the bando belt like 034 sent him would last mabe a couple months. I now run gates rpm whenever possible and if not just a regular gates. Idk why you think the 1310 is going to stretch but I'd run that belt any day over the bando

[denokarter]

Wow ok I can tell you have little to no experience with this platform. I have run a dozen different belts and the bando belt like 034 sent him would last mabe a couple months. I now run gates rpm whenever possible and if not just a regular gates. Idk why you think the 1310 is going to stretch but I'd run that belt any day over the bando

There is probably hundreds of dual pulley cars using the 034 belt without any issues lol what are you saying my man

[TheGreatDecay]

There is probably hundreds of dual pulley cars using the 034 belt without any issues lol what are you saying my man

I’m not arguing the point cause I have no real life experience with SC belts outside of what I’ve researched. Just stating I didn’t get sent the Continental belt with my 190mm last week, they sent a Bando instead which I just didn’t trust. If the 1310 RPM has issues I’ll give the Bando 1320 a try or source a 1320 continental.

[Shane Horning]

Yea continental belts are good but i never had a bando hold up

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[steve_85]

Wow ok I can tell you have little to no experience with this platform. I have run a dozen different belts and the bando belt like 034 sent him would last mabe a couple months. I now run gates rpm whenever possible and if not just a regular gates. Idk why you think the 1310 is going to stretch but I'd run that belt any day over the bando

What are you talking about? lol
I've had my 034 belt for 52 000 miles with no issues at all running dual pulley on a pretty high pulley ratio. People love to talk about something they have no idea about. " Couple of months" if your belt lasts couple of months you have other issues on hand my friend. Belt slippage, belt shredding are for some reason always blamed on the belt itself but this is far from the truth.

[Shane Horning]

Was it a bando or continental?
What are you talking about? lol
I've had my 034 belt for 52 000 miles with no issues at all running dual pulley on a pretty high pulley ratio. People love to talk about something they have no idea about. " Couple of months" if your belt lasts couple of months you have other issues on hand my friend. Belt slippage, belt shredding are for some reason always blamed on the belt itself but this is far from the truth.

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[steve_85]

Was it a bando or continental?

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Lol

Bando

You do realize Bando is the OEM belt supplier for many vehicle brands out there right?...( GM included )

[Shane Horning]

Ok mabe the bando belts i used were not OEM cause they definitely couldn't handle the job. Idk if i still have a pic but in a couple months the ribs were falling apart
Lol

Bando

You do realize Bando is the OEM belt supplier for many vehicle brands out there right?...( GM, chevy )

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[scmtkings4]

58.2/207 (Unitronics/JHM). Gates RPM 1345 just barely snuck on. Had to hold the tensioner, hold the belt on, then walk it on by turning the crank with the crank turning socket.

This would also be the belt for a 57.X/207. With a stock upper I’d guess a 1350 is the way to go, but take someone’s word who actually did it over mine.

Tensioner is limited in travel with the 207. Also the 207 actually interacts with that engine nub itself, so even though I had already ground it down for belt clearance, I didn’t grind it even and had to go further because the pulley was hitting it.

Nub:
https://uploads.tapatalk-cdn.com/20200714/170ce780f6e0c3f6e652df70151400c2.jpg

Tensioner at rest once installed:
https://uploads.tapatalk-cdn.com/20200714/423f6e26d8bfa57481ab7e91f8f8e107.jpg

https://uploads.tapatalk-cdn.com/20200714/d0e241a46311ea0a08bc6123d0247be3.jpg


Sent from my iPhone using TapatalkHey man, how close to the tensioner is the 207 crank pulley? Looks like a really tight fit.

Any concern that it might rub/hit? Especially if going wot and maybe slight movement from the crank pulley.

[Jay@JXB]

Hey man, how close to the tensioner is the 207 crank pulley? Looks like a really tight fit.

Any concern that it might rub/hit? Especially if going wot and maybe slight movement from the crank pulley.

I haven’t had any issues yet. Knock on wood.


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[scmtkings4]

I haven’t had any issues yet. Knock on wood.


Sent from my iPhone using TapatalkFrom your memory how close are they? Half an inch?

[Jay@JXB]

From your memory how close are they? Half an inch?

Probably about 3/8”.


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[scmtkings4]

Probably about 3/8”.


Sent from my iPhone using TapatalkYeah that's close. Cool thanks man

[Kainep]

I thought i'd make an easily searchable thread to outline the supercharger belt sizes for various pulley configurations now that we are experimenting more. For those that have more knowledge, please help fill in the blanks.




Stock Pulleys

Pulley Combo--------effective length-------------part number

162.06/63.25 ------ 1270mm -------- 7PK1270 ------ 06E903137AB (stock belt)

162.06/63.25 ------ 1272mm ------- Gates K070500 (standard) or K070500RPM (stronger)





Single Supercharger Pulley Upgrade:

Pulley Combo----------effective length-------------part number

162.06/~57 ------ 1270mm -------- 7PK1270 ------ 06E903137AB (stock belt)

162.06/~57 ----- 1272mm ------- Gates K070500 (standard) or K070500RPM (stronger)





Single Crank Pulley or Dual (Upper and Lower) Pulley Upgrade:

Pulley Combo----------effective length-------------part number


179 - 183mm------------1290mm----------Continental 7PK1290
179 - 183mm------------1291mm----------Gates K070508 (standard) or K070508EMD (stronger)


18x - ???mm------------???????????---------????


19x - 19x???mm---------1325mm----------7PK1325 - Gates (ebay online from ireland, UK, etc)


200-20x???mm-----------1340mm----------k060525 - or k060525hd (stronger - 6 rib) - Gates
200-20x???mm------------1345mm----------7PK1345 - Dayco or Gates





Notes:
Bando K070508 is 7PK1300 and 1300mm effective length
7PK1300 from Gates RPM??? Cant find part number
7PK1310 from Gates RPM??? Cant find part number
So I’m new to this stuff and am struggling a bit here, some advice would be greatly appreciated, I recently bought a 2012 apr stage 2 and blew a “brand new” sc pulley 10 minutes into my first drive with it. What part number should I be looking?
Bando 7pk1300 Is what the dealer said they had on it, and told me that’s what I should order. Thanks in advance!

[Shane Horning]

What lower pulley is on the car? Apr 187mm?
So I’m new to this stuff and am struggling a bit here, some advice would be greatly appreciated, I recently bought a 2012 apr stage 2 and blew a “brand new” sc pulley 10 minutes into my first drive with it. What part number should I be looking?
Bando 7pk1300 Is what the dealer said they had on it, and told me that’s what I should order. Thanks in advance!

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[MSq5]

Wow ok I can tell you have little to no experience with this platform. I have run a dozen different belts and the bando belt like 034 sent him would last mabe a couple months. I now run gates rpm whenever possible and if not just a regular gates. Idk why you think the 1310 is going to stretch but I'd run that belt any day over the bando

I defer to your experience, but my limited one is a bit different. I went dual pulley 57.7/187 93 octane tune about 14 months ago. At the time, all I could find locally was a Bando 7pk1300. I installed it. Tight fit. Ordered a Gates RPM 1310. Figured I'd install it if I saw premature wear or the Bando broke.

I'm still waiting, 14 months and close to 20,000 miles later. The Bando looks pristine, like new. Lots of Dragy runs. I realize this is a sample size of one, and my Q5 power level may be lower than guys running catless downpipes, more open exhaust, 100+ octane tunes and such. My ZF8 tune is also limited to 7,000 rpm to keep the supercharger rpm happy at 22,750.

I just keep checking the belt, but have found no reason to swap belts. I know the Gates belt is excellent quality. But, it appears that any problems Bando may have had may be in the rear view mirror.

[JoedreddUK]

Unable to source a Gates 1300 belt here in the UK, and apparently Gates have stopped making them!
So what’s the next best brand to go for now ??


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[MSq5]

Concerns by others, notwithstanding, Bando's 7pk1300 has worked great for me. Maybe Continental has a 1300.

Note: my 187/57.7 PR 3.247 is very close to yours. A 1300 was very tight. You might be able to make a 1310 work.

[JoedreddUK]

Concerns by others, notwithstanding, Bando's 7pk1300 has worked great for me. Maybe Continental has a 1300.

Note: my 187/57.7 PR 3.247 is very close to yours. A 1300 was very tight. You might be able to make a 1310 work.

Well no joy with a 1310 either, Gates now make a 1318 so will give that a go. Otherwise I’ll be placing an order from the US for some Bandos.


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[Tikisdad]

I just ordered a Gates RPM 1310 from ECS tuning last night.

[JoedreddUK]

I just ordered a Gates RPM 1310 from ECS tuning last night.

Seems you guys have a good supply, lucky sods lol


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[zhelyazA6]

Running 57.75(APR)/203(Fluidampr) with a Gates 7pk1345 belt already a year with no issues or observed slippage. Yes, it's a tight fit and not very easy to install.
As already mentioned before the tensioner is limited in travel with the 203 as well.
I don't think a smaller size belt would fit or if it does it would be a huge challenge to install.

[dhandley01]

Running stock 63.25 SC pulley with 203mm Fluidampr. They provided a k060525, but it didn't even come close. Tried a k060530 and it was off by a hair.

My guess is that a K060532 will do the trick for this setup. Will update if it fits.

[MSq5]

Running stock 63.25 SC pulley with 203mm Fluidampr. They provided a k060525, but it didn't even come close. Tried a k060530 and it was off by a hair.

My guess is that a K060532 will do the trick for this setup. Will update if it fits.

Would you happen to know the actual belt size, like 7pk1300, 7pk1310 or such?

[djn876]

Would you happen to know the actual belt size, like 7pk1300, 7pk1310 or such?525 is a 1333
530 is a 1346
532 is a 1351

In this case they are all 6 rib belts bring used.

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[MSq5]

525 is a 1333
530 is a 1346
532 is a 1351

In this case they are all 6 rib belts bring used.



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Thanks.

[dhandley01]

Update: The k060532 or 1351mm belt was a perfect fit for a 203mm fluidampr and stock SC pulley.

I am currently exchanging emails back and forth with IABED to figure out why mine required a much larger belt than the supplied. Will update if we find out why my setup required the 1351 vs. the usual 1333 that is normally sent out with a 203mm/63.25mm setup. Also, if anyone has a hard time finding that size, RockAuto has them for $36~.

[Herakei]

What are you talking about? lol
I've had my 034 belt for 52 000 miles with no issues at all running dual pulley on a pretty high pulley ratio. People love to talk about something they have no idea about. " Couple of months" if your belt lasts couple of months you have other issues on hand my friend. Belt slippage, belt shredding are for some reason always blamed on the belt itself but this is far from the truth.

My Bando worked for a week before blown. It was a 1320 for 188/57 that IE sent me with their kit, didnt slip according to logs (yeah, I was logging that night), but it seems didnt like the heat produced for dual pulley and just broke.

I put a Gates RPM 1310, and still running

https://www.audizine.com/forum/showthread.php/891431-Bando-supercharger-belt-ripped-after-less-than-a-day?p=14413341&viewfull=1#post14413341

Oh, and it cost me a new belt tensioner, which is not that bad to replace but the one I had was ok

[irish07]

Crank: 205mm
Supercharger: Stock

I’m able to easily fit a gates 7pk1350, also tried the gates 7pk1345 and it fits snug. I test fitted a gates fleetrunner 7pk1345 and the flat ribs wouldn’t allow enough length, impossible to fit even by rotating engine.

Made a video to help anyone, on how to use the idler pulley method for snug fitting belts. Bear in mind, I have the locking pin installed to the tensioner and front end in service mode.

https://youtu.be/i5NnUQvmCOw

[acid88]

I'm going dual pulley and am thinking about what belt I'd need.

Supercharger: APR 57.75mm
Crank: JHM 179mm.

Is it 1290, as shown in the table or ist it 1300, as I calculated?

[ccssid]

I'm going dual pulley and am thinking about what belt I'd need.

Supercharger: APR 57.75mm
Crank: JHM 179mm.

Is it 1290, as shown in the table or ist it 1300, as I calculated?I have exact setup. Using the ECS Kevlar 1300. Perfect fit.

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[acid88]

I have exact setup. Using the ECS Kevlar 1300. Perfect fit.

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perfect, thank you buddy!

what are your perfomance results with that setup?

[audity87]

Recently had to change belts on my CREC 2015 S4 (Australia)

Setup is APR Dual pulley

In the past when i first got the car, the belt on it was really noisy / squeaking so decided to go the ECS Red belt, 7PK1300
well, that was a nightmare, it fits.. just! but being a stiffer belt it doesn't flex as well so quite difficult to fit.

Started the car to an almighty Squeal that never stopped
tried everything including trying to sand the glossiness off as suggested in another thread, barely made it better.
used that for 2 days and gave up

Locally here in AU one of our part stores (Supercheap Auto) has a generic rebrand of Gates called "Calibre" bought a 6PK1305 which was in stock as a stop gap.
well 3 years on it only just became noisy and never slipped, i suspect getting coolant all over it a few times due to a bad thermostat was the cause.

Just picked up the 6PK1305 again, fits perfect and no noise.
best bit.. they are $5AUD on clearance at the moment.. that's about $3US.. i bought 2
should see me through the life of the car haha.

Tensioner is in the first 20-30% of adjustment so i suspect you could go to a 1310 without any drama

IF i ever need to swap for some reason i will try the gates 7PK1310 and report back but for now the 1305 does the trick for anyone else looking

[MSq5]

Recently had to change belts on my CREC 2015 S4 (Australia)

Setup is APR Dual pulley

In the past when i first got the car, the belt on it was really noisy / squeaking so decided to go the ECS Red belt, 7PK1300
well, that was a nightmare, it fits.. just! but being a stiffer belt it doesn't flex as well so quite difficult to fit.

Started the car to an almighty Squeal that never stopped
tried everything including trying to sand the glossiness off as suggested in another thread, barely made it better.
used that for 2 days and gave up

Locally here in AU one of our part stores (Supercheap Auto) has a generic rebrand of Gates called "Calibre" bought a 6PK1305 which was in stock as a stop gap.
well 3 years on it only just became noisy and never slipped, i suspect getting coolant all over it a few times due to a bad thermostat was the cause.

Just picked up the 6PK1305 again, fits perfect and no noise.
best bit.. they are $5AUD on clearance at the moment.. that's about $3US.. i bought 2
should see me through the life of the car haha.

Tensioner is in the first 20-30% of adjustment so i suspect you could go to a 1310 without any drama

IF i ever need to swap for some reason i will try the gates 7PK1310 and report back but for now the 1305 does the trick for anyone else looking

Do you know the actual pulley sizes and ratio? I am dual pulley 57/187 for 3.25:1 ratio. Pulley brands are in my sugnature. I am runnung a Bando "Rib Ace" 7pk1300 with no issues. Running the same belt for years. It is tight but slips on with the tension fully extended and locked.

Can you get Bando in Australia? They list both a 7pk1300 and a 7pk1320. The latter may be too loose. I don't know. These sell in the US for about $20-25 USD. A brief web search seems to show that Bando has Australian distribution.

I realize the 6 rib belts are working for you, but maybe this information might help others.

[audity87]

Same size pulleys for me, straight APR kit, 57.75/187mm

I'm sure Bando is possible to obtain here, but this was more of a heads up that if you need a belt in a hurry locally or just looking for a budget option the 6PK1305 works well
being CREC if the belt slips you know cause it throws a CEL almost immediately (happened on the track with the original belt)

Here in Aus these cars are uncommon and even less so in the tuning community so we lack much info and availability of parts locally, even Stealerships usually need to order in parts.
FCP and ECS of course are available but unless you are buying a bulk qty of items, shipping is prohibitively expensive.