Who runs oil restrictor on the BT/BAT?

[dirtybrd]

Do you run a restricted or non-restricted oil feed fitting on your BT/BAT? What brand?

[traf818]

ATP restricted fitting

[317ssayzarc]

you need to have a restrictor for a gt series turbo...

[A4 TSCHUSS]

you need to have a restrictor for a gt series turbo...

What he said. It is required for a Garrett ball bearing turbo. And I use an ATP

[dirtybrd]

I think my turbo is on the way out, again. I can't keep putting $800+ chra's in it. I need to find the problem, I was just wondering if anyone ran a non-restricted. I had one on my old set-up without issue. I have plenty of coolant flowing thru it, new lines too. I just replaced my oil return and have plenty of pressure at the turbo. My 50mm BOV has a 8mm signal line and can be heard venting with the smallest amount of boost. I'm lost for sure.

[koolade9]

I think my turbo is on the way out, again. I can't keep putting $800+ chra's in it. I need to find the problem, I was just wondering if anyone ran a non-restricted. I had one on my old set-up without issue. I have plenty of coolant flowing thru it, new lines too. I just replaced my oil return and have plenty of pressure at the turbo. My 50mm BOV has a 8mm signal line and can be heard venting with the smallest amount of boost. I'm lost for sure.

A restricter is needed on most all BB turbos... thrust bearing, non-restricted, crank up the oil press...

In response to above, have you ever looked at the compressor map for your turbo, and plotted out the area you're actually using? You might be suprised...

[dougyfresh]

I have one. Not sure where ASP sourced it from.

[dirtybrd]

A restricter is needed on most all BB turbos... thrust bearing, non-restricted, crank up the oil press...

In response to above, have you ever looked at the compressor map for your turbo, and plotted out the area you're actually using? You might be suprised...

No, I don't know much about maps. Why would that matter?

[A4ringedONE8T]

GT turbo's come with a built in restrictor but it is common practice to run one inline as well. Why I dont know, Im just a follower ...

[A4ringedONE8T]

No, I don't know much about maps. Why would that matter?

Out of its efficiency range, but you shouldnt be

Just curious, have you logged your EGT's? If so whats the max they go to?

[koolade9]

No, I don't know much about maps. Why would that matter?

This was in response your questioning why you keep replacing turbos, I should've been more specific...this isn't oil related...

What turbo do you have exactly? I may actually have a map of it if I can dig em up...

[koolade9]

Out of its efficiency range, but you shouldnt be

Just curious, have you logged your EGT's? If so whats the max they go to?

exactly... we're on the same page.

[A4ringedONE8T]

This was in response your questioning why you keep replacing turbos, I should've been more specific...this isn't oil related...

What turbo do you have exactly? I may actually have a map of it if I can dig em up...

T3 3071R .82 a/r

[koolade9]

T3 3071R .82 a/r

do you just keep hitting refresh???

I'll check tonight when I get home...

[dirtybrd]

This turbo was recommended to me my engine builder and he knows his shit. I've hit the 990 range, 8k+ rpm, pre-meth inj. @ 25psi. running rich.

[koolade9]

990 C??!?!?!

holy fcking hot turbos batman!!!

[dirtybrd]

I'm guessing 990 might have been 950, can't remember. Had a programming issue and the car has been running mad rich. But the turbo went bad once before the rich running issue.

[koolade9]

I'm guessing 990 might have been 950, can't remember. Had a programming issue and the car has been running mad rich. But the turbo went bad once before the rich running issue.

I won't jump to conclusions right away... as running crazy-rich (i.e. <9:1 a/f) can cause high egts as well... As a rule of thumb (boondock saints), anything over 900 is bad...with 850 as a safe spot... again, not jumping to conclusions, but either way, that's hot!

Does the 1.8t have individual egt probes or just 1? Where are they tapped at along the runner, and if you have multiple, are you seeing 950s accross the board?

[A4ringedONE8T]

I won't jump to conclusions right away... as running crazy-rich (i.e. <9:1 a/f) can cause high egts as well... As a rule of thumb (boondock saints), anything over 900 is bad...with 850 as a safe spot... again, not jumping to conclusions, but either way, that's hot!

Does the 1.8t have individual egt probes or just 1? Where are they tapped at along the runner, and if you have multiple, are you seeing 950s accross the board?

Single EGT reading and high 900's are fine. Some of the Elim's on high boost will see 1k. APR 3+ runs in the 950-1k range as well hence the reason they deem it necessary to use an Inconel manifold

[koolade9]

Single EGT reading and high 900's are fine. Some of the Elim's on high boost will see 1k. APR 3+ runs in the 950-1k range as well hence the reason they deem it necessary to use an Inconel manifold

I'm not challenging this...since I haven't played with the vag 1.8t... but logic can't help but tell me that if 950 is bad on one chunk of rotating iron...it can't be good on another, unless I'm really missing somthing... Again, not flaming or challenging, I'd just really like to understand how these can run so hot and be acceptable...

Is this a factory egt probe? Are you, or anyone else running an aftermarket egt to contest it's accuracy?

Is the probe high up in the runner (close to the head)? I could see potential timing retard at high rpm causing continued combustion during exhaust stroke, and essentially throwing a flame accross the probe... (I'm just trying to rationalize here)

I'm not looking for flames or to turn this into a "my dcks bigger then yours" thread... Help me understand what I'm missing about this motor vs. others... I've tuned enough to be curious here...

[A4ringedONE8T]

To be honest I dont know where the ECU gets its EGT readings, Im gonna guess from the front 02 sensor. There is nothing in the head that Im aware of. I have not seen an external EGT gauge on a 1.8T to see what readings are shown, we do have a 2.0T FSI GLi at the shop right now with one, we just got done putting a ATP 3071R setup on it and the EGT gauges shows up to 1100 when continuously running the car on high boost (23-25psi)

[dirtybrd]

Yes, it gets the reading from the pre-cat o2 sensor, and I had mine installed the same distance from the turbo as stock.

[dougyfresh]

Shawn, I think the 2.0 FSI engines run hotter due to the direct injection and tighter tolerances for emissions.

My car gets into the 800*C range

[A4ringedONE8T]

Shawn, I think the 2.0 FSI engines run hotter due to the direct injection and tighter tolerances for emissions.

My car gets into the 800*C range

Im sure it runs completely different however its the only correlation I have to an EGT gauge other than what the ECU shows

[Papachristou]

my poor 1+ hits 950 with ease! gotta be something else

[A4ringedONE8T]

Stock 3 bolt flange making shitty power FTL ... High HP, high boost BAT cars making good power FTL! lol

[A4 TSCHUSS]

Dont know if it's due to a super low emissions vehicle or not but stock the car runs in the 900C range.

And my car will run 900+ all the time. When doing a 2 gear pull I hit 950 @ 5600 and then 990 @ 6200 followed by 995 from 6400-6840 (dont know if 995 is as high as it will read or not)

[B6Lovin]

fwiw i plotted a few points on a map for a GT2860R just to get a vague idea of the places where people with KNOWN horsepower numbers are running on the map, and almost ALL of them were WAYYYY outside the efficiency range.

especially you david hahaha

and for anyone wondering, the 2860 is supposedly comparable to a GTRS.. although the full 2860 is larger and in some respects quite different.. but that should be a moot point here, a bigger turbo would (and should) be closer to getting those points ON the map at the same power levels - so if a GTRS is smaller, those points are even further out.

p.s. - for the sake of keeping things simple i plotted points based off of near perfect conditions and used the same numbers all around (except where they'd obviously be different... i.e. - HP) and since i doubt anyone dynod with PERFECT conditions - that too would only make getting into the efficiency range of the turbo harder.

maybe you're so far out chris, that it's just taking a toll on your turbos... or maybe you're just an unlucky guy. you book a replacement yet?

[dougyfresh]

where is the plot, daniel?

[dirtybrd]

I can't be out of the range. How many people run 3071r's on 1.8's and 2.0's, not including on here, the Tex, Mazdas, Hondas, Toyotas, etc. Shawn runs the same turbo as me, smaller exh. housing and smaller motor, but still. I should be getting at least 30k miles out of them.

[A4ringedONE8T]

Have you checked the oil pressure and or the oil feed line over at the filter housing?

[B6Lovin]

where is the plot, daniel?

on garrett's website lol. if you run through the tech articles on there, there's one that goes semi-in depth about all of it, then i did some more research on top of that just to kinda explain it more (although they don't miss very much)

[dougyfresh]

on garrett's website lol. if you run through the tech articles on there, there's one that goes semi-in depth about all of it, then i did some more research on top of that just to kinda explain it more (although they don't miss very much)

Oh. Yeah. I've seen those plots (compressor maps). You made it sound like you plotted everything up in Excel. Either that or I was still groggy from work yesterday (damn insane work coming home with me).

[diagnosticator]

EGT post turbine measured by the pre O2 sensor is not a good comparison for turbine inlet temps, and can not be substitute for exhaust temp at the turbine inlet flange. Turbine discharge temps are a lot lower than turbine inlet temps.

[dirtybrd]

I was told by my local turbo guy the the 900s are no problem. I read on some other forums that they get into the 12-1300s pre-turbo and that's about a 300 difference after the turbo.

[CO AVANT]

I've been in the 900's since I had my K04...

[dirtybrd]

What the hell is eating my turbos?

[dougyfresh]

What the hell is eating my turbos?

Cookie Monster

[A4ringedONE8T]

What the hell is eating my turbos?

Somethings trying to tell you a 30 series is too small

[dirtybrd]

Yea, but I hate to blow a 35r too. I better re-phrase that.