cayenne brake upgrade ???? what rotors????

[*Blue-Angel*]

330s ill fit better

[Reggieroo]

I still have an issue with the braided lines I bought. These are the ones I bought are from HEL but they only supplied me with the lines without the end piece to screw into the caliper as original RS4 lines are two separate parts. I have been in touch with them about supplying me ones like the stoptech ones with the end piece as part of the line but they need measurements. Does anybody have the complete length of the stoptech RS4 lines. Also I'm sure I have read that they are a little long so now I have a chance to get them made the correct length.

[DevilS4]

So, been looking into the idea of using the cayenne rears. Anyone have an idea on rotors to use. I'm not worried about the e-brake issue as I have access to some separate parking calipers. OEM cayenne rears are 28mm thick though. S4/RS4 rears are only 22mm so that would probably be too thin. I'm looking for something around 25mm so I'm not too thin for the cayenne's or too thick for my wilwood parking calipers.

[Switchblind360]

I just stumbled into one pair of 17Z Calipers and one pair of 18Z Calipers, plus an extra 17ZR which is scratched but functional (have to get another crossover tube).

Since I ended up with the extra caliper, it became my test caliper for piston removal. Piece of cake. Rebuilding these calipers is a snap. The only draw back is the $100 rebuild kit ($45x2+shipping) My B5 rear brake rebuild kits totaled $12.

Anyhow, 4 rebuild kits are on the way, so this weekend they are all getting prepped to drop off at Primo Powdercoatings". I ordered a set of slotted ML55 rotors, a set of stainless lines, and two full sets of mounting hardware as well.

If anyone is looking for a 330 kit with mounting hardware, PM and let me know and I'll have them powdercoated in your choice of colors. You would still need to source brake lines for the 350 kit, or brake lines and rotors for the 330 kit

[Bettonracing]

The giro disc rotors are great looking and perform well but, I'd guess $1300 for fronts is a little much for most people piecing together a kit. My c55 rotors cost me $80 on a close out $420 in calipers, $55 for lines, $38 for ceramic pads and I sold my stock brakes for $250. I'm at $340 out of pocket for a 345mm upgrade. The two piece option may happen down the road but $1300 for fronts seems out of place besides at the track.

Your estimated price for the girodiscs is WAAAAY off the mark!

Regards,
Kurt

[DevilS4]

Your estimated price for the girodiscs is WAAAAY off the mark!

Regards,
Kurt

I just went with the price of the rs4 rotors since the cayenne ones had no price on the site. What are they selling for?

[Bettonracing]

Their website shows $750 http://www.girodisc.com/Girodisc-Fro...er_p_6416.html

Don't worry, you're not going crazy. The website was updated last wknd when I checked.

Regards,
Kurt

[DevilS4]

That's actually not too bad price wise. I still want to know what their 325mm rear upgrade is? Talks about it in the description but no information for it anywhere I saw on the site.

[AudiForeman]

i decided to can the idea of the willwood BBK and im going with the JHMotorsport Cayenne 350mmx32mm package. no i didnt have time to read this entire thread but i have read a few pages and understand that these calipers 6mm thinner than stock HP2 calipers? therefore they will fit behind stock avus wheels? sorry if its a dumb question i just dont have a lot of time to read throught all 18 pages.

[Danza]

350mm won't fit

[AudiForeman]

350mm won't fit

needs to be a 18 with a 35et? im thinking of buying some 18x8.5 35et VMR710 or avantgrade 310's

[Danza]

depends on the wheel

[AudiForeman]

Can you check these ones out please, im not wheel/tire/bbk expert
http://www.pyspeed.com/Avant-Garde-A...avg-121-vw.htm

[DevilS4]

Can you check these ones out please, im not wheel/tire/bbk expert
http://www.pyspeed.com/Avant-Garde-A...avg-121-vw.htm

It's going to depend on the spoke profile if it hits or not. I have some off brand 18" with my 350mm and I needed a 8mm spacer. Probably could have gone with a 5mm but they are a 35mm typical offset before the spacer and just barely hit.

[AudiForeman]

Well the wheels in the link have an availible 35mm and 45mm offset I believe. 45 should be more than enough room

[jettaglx91]

So what makes the girodisc better then jhm or racing brake?

[Bettonracing]

Just so happens I looked into this ~2wks ago.

Price: RB most expensive, GD & JHM about the same (retail).
Weight: RB heaviest, GD & JHM about the same (possible slight advantage to JHM)
Floating hat-to-disc connection: RB [Yes]; GD [Yes]; JHM [No]
Proven track record with brakes (literally & figuratively): RB [Yes]; GD [Yes]; JHM [No]

Other notable mentions:
GD places heavy emphasis on corrosion resistant coatings where necessary.
GD & JHM employees own HP2'd cars; RB unknown.
RB has their own foundry.

It's also subliminally comforting that GD does alot of work on high end cars (Lambos/ Ferraris/ etc). A brake failure in that market/ arena would likely put you out of business.

Personally, I'd take the GD over the RB's or JHM's. The rigid hat-to-disc connection is a no-go for the JHM, and the weight & cooling advantage of the GD over the RB makes them more functionally attractive to me.

Regards,
Kurt

[DevilS4]

If I go with two piece rotors down the road I'd give the edge to the giro disc as well.

[Korben007]

i pick Giro just for the look of it. LOL JHM is to shiny!

[jettaglx91]

whats the drawback to the fixed hat? or is there just no benefits like the floating

[*Blue-Angel*]

For a street car it really makes no difference. The only difference is when you are tracking. If you are going to track the car hard with an aggressive compound and often then floating is the key. But then again these calipers and certainly those rotors and the way the hats are developed is completely off from a competition braking set up and the way it should be. For a street car bolted rotors are just fine and can still be tracked with decent results. This really is just a street kit but certainly out of the three options GD and RB are the best options.

[DevilS4]

For a street car it really makes no difference. The only difference is when you are tracking. If you are going to track the car hard with an aggressive compound and often then floating is the key. But then again these calipers and certainly those rotors and the way the hats are developed is completely off from a competition braking set up and the way it should be. For a street car bolted rotors are just fine and can still be tracked with decent results. This really is just a street kit but certainly out of the three options GD and RB are the best options.

For a track setup I would think these would work with a good pad compound and rotors. However a good stop tech or Alcon setup would come in around the same prices and be light and give better compound selection. I'm a show and go type guy so I like the larger calipers and the larger rotors than most of the competition kits. Also building in stages is nice. I might look into a brembo gt kit or rs4/r8/gallardo calipers with the 380mm upgrade from giro disc.

[Matador]

Quick question: Are the 17Z/18Z calipers aluminum or what?
That is all.

[DevilS4]

Yes they are aluminum. Lighter than stock calipers by a good bit especially considering the size difference.

[Matador]

By chance does anyone have the weights? 17 pages plus all the other crap floating out there....

The R32 front caliper is 10.3x lbs, including the brake line (HERE), so even if it's the same weight adding 4 pistons and increased sweeping area would be awesome.

Nvm, found it!

the 330 caliper weighs exactly 10 lbs without pads.

http://www.audizine.com/forum/showth...=1#post4672955

Booya.

[Switchblind360]

By chance does anyone have the weights? 17 pages plus all the other crap floating out there....

17Z caliper without fluid, pistons, or hardware ~ 8.54 Pounds
18Z caliper without fluid, pistons, or hardware ~ 8.8 pounds

It's late, and I forgot how to reset my scale to OZ/LBS

The differences between calipers are very few and differ primarily in the shape of the mount. This makes perfect sense. They fit on the same hub, and the 18Z extends farther by 10mm or just under a half an inch. This was mentioned earlier in the thread, but I couldn't find any pics, so, here:













The pins are where the brake pads "rest" on the inside of the caliper. Notice how much farther away from the mounting point this is on the 18Z (top).



18Z


17Z

[DevilS4]

Anyone know the exact weight on an hp2? I'm guessing around 12 lbs but not sure.

[*Blue-Angel*]

The weight with the pistons is about 10.5lbs Cayenne piston 18Z
The weight of my AP racing caliper is 4.5
OEM ?

[golfrsi]

The differences between calipers are very few and differ primarily in the shape of the mount. This makes perfect sense. They fit on the same hub, and the 18Z extends farther by 10mm or just under a half an inch.

Missing one of the biggest differences and that is piston sizes are different as well... 30/34/38 on the 18, 34/36/38 on the 17

[DevilS4]

The weight with the pistons is about 10.5lbs Cayenne piston 18Z
The weight of my AP racing caliper is 4.5
OEM ?

What size AP's do you have? I have a friend with a gallardo looking into either ap or alcon. Any idea what the oem gallardo/rs4 8 piston brembos weigh?

[Cadiburns]

What size AP's do you have? I have a friend with a gallardo looking into either ap or alcon. Any idea what the oem gallardo/rs4 8 piston brembos weigh?

11.68 lbs

http://forums.audiworld.com/showthread.php?t=1606834

[Bettonracing]

Stasis says the HP2's weigh 14.5lbs.

[*Blue-Angel*]

What size AP's do you have? I have a friend with a gallardo looking into either ap or alcon. Any idea what the oem gallardo/rs4 8 piston brembos weigh?

Using a custom AP Racing caliper. Very similar to their Pro 5000 series but custom made.

[DevilS4]

11.68 lbs

http://forums.audiworld.com/showthread.php?t=1606834

So only about a lb more. I'm gonna keep my eye out for a set. The 380mm upgrade kits are looking pretty nice especially since they still save weight over the stock setup.

[.:RS4]

I decided to go with the 350mm calipers as I have found a good deal on a set of 2 piece B6/B7 S4 slotted rotors.

Now here is the question: has anyone thought about spacing the 2-piece rotor to get the underhat measurement right where it needs to be with a custom made spacer rather than taking off 3-4mm from the caliper mounting brackets to fit S4 rotors? I believe if done properly with a high quality material and new hardware it should be legit. Maybe it is not worth it for most of you, but in my case it probably would be. What do you guys think?

[1NaudiA4]

Had my rotors come in earlier this week so I spent today playing with everything getting it to all work.

Here are all the parts I used to make mine go:

2: 18Z 350mm calipers
2: ML55 rotors
4: 14mm grade 8.8 bolts
4: 16mm by 14mm dry bearings
1: set of 330mm pads

I ran into a few hiccups through out the way but I made everything work. The first rotor that I clearanced I ran into a little problem with the rotor hitting the spindle. I thought that it wasn't completely over the center bore on the hub so I kept on boring out the center of the rotor but it turns out that the rotor was actually hitting the spindle at 2 spots. So since I clearanced the center bore too large it looks like one of my rotors is going to be garbage now since it wont center on the hub.

Also noticed that the 350mm pads that I have will not work because they over hang on the inside edge of the rotor. They would work for a while until the pad/rotor wears down enough to start hitting the lower surface that they over hang on. So I went to autozone and compared the 350mm pads to the 330mm pads and sure enough the 330mm pads look as though they will work a lot better.

The two spots that I had to clearance on the spindle:



rotor and caliper on:


wheel on:

[naudlee]

Had my rotors come in earlier this week so I spent today playing with everything getting it to all work.

Here are all the parts I used to make mine go:

2: 18Z 350mm calipers
2: ML55 rotors
4: 14mm grade 8.8 bolts
4: 16mm by 14mm dry bearings
1: set of 330mm pads

I ran into a few hiccups through out the way but I made everything work. The first rotor that I clearanced I ran into a little problem with the rotor hitting the spindle. I thought that it wasn't completely over the center bore on the hub so I kept on boring out the center of the rotor but it turns out that the rotor was actually hitting the spindle at 2 spots. So since I clearanced the center bore too large it looks like one of my rotors is going to be garbage now since it wont center on the hub.

Also noticed that the 350mm pads that I have will not work because they over hang on the inside edge of the rotor. They would work for a while until the pad/rotor wears down enough to start hitting the lower surface that they over hang on. So I went to autozone and compared the 350mm pads to the 330mm pads and sure enough the 330mm pads look as though they will work a lot better.

The two spots that I had to clearance on the spindle:



rotor and caliper on:


wheel on:

Running Ml55amg rotors myself... sitting at the shop
-What tools did you use for the job? any ideas/changes you would have made?
-end up clearancing both spindles (assuming w/ angle grinder) to get the rotors to fit?
-lug holes slightly enlarged also?

Just wanted to be 100% sure when I mod mine, thanks!

[1NaudiA4]

Running Ml55amg rotors myself... sitting at the shop
-What tools did you use for the job? any ideas/changes you would have made?
-end up clearancing both spindles (assuming w/ angle grinder) to get the rotors to fit?
-lug holes slightly enlarged also?

Just wanted to be 100% sure when I mod mine, thanks!

- 3" flap wheel to clearance center bore of rotor( ML55 center bore is 66.8mm while the hub is 68mm)
- Angle grinder to clearance both spindles
- the holes on the rotor are 15mm so those are good to go.

[s vier]

finally got mine on!

Is this a subliminal Pepsi ad?

I want Brembos......
I want a Pepsi.........

[witwer4444]

^ dude i never noticed that holy shit haha