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Evo 8 - Built 2.0L GTX3584RS S3 93 & E85

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Old Sep 8, 2017, 10:11 AM
  #16  
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Originally Posted by tscompusa
This ones 0.83 A/R. Somethings definitely holding the car back.

We were experiencing some vac lines coming off during tuning, so maybe it has leaks.

All I can do when I don't have the car in my possession is ask the customer to make sure it has no leaks.
I cannot enforce that, just go off what the customer says.
.83 a/r With a 62mm exducer hot side.....it's probably at choke point.
700hp @ 40psi seems darn good too me.

Nice job!
Old Oct 12, 2017, 12:07 AM
  #17  
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Originally Posted by 2winscroll
.83 a/r With a 62mm exducer hot side.....it's probably at choke point.
700hp @ 40psi seems darn good too me.

Nice job!
Are you saying he should have went w/ a larger a/r due to that 62mm exducer on the turbine?
Old Oct 12, 2017, 12:09 AM
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I have a similar set up (2.0, s3's, ported head, ported skunk2 IM etc) on a gtx352r and my car put down ~700whp on only 36 psi .83 vband. I would say there is a definite bottleneck with this guys car. I am, however, considering upgrading to the 3584rs just not sure what a/r I want to run.
Old Oct 12, 2017, 07:58 AM
  #19  
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Originally Posted by 6spdlegend
I have a similar set up (2.0, s3's, ported head, ported skunk2 IM etc) on a gtx352r and my car put down ~700whp on only 36 psi .83 vband. I would say there is a definite bottleneck with this guys car. I am, however, considering upgrading to the 3584rs just not sure what a/r I want to run.
Garrett shows the same turbine flow @ pressure ratio of 2 for the 3582r vs. 3584rs .83a/r
So you did 700hp with intake manifold, and ported head. So without the Porting or intake I would expect you would need about 40psi to do the same.

As far as using a larger a/r on this vehicle I would say if your ok with more lag you would pick up some top end power. I think the car has a great power curve, but it's always fun to experiment so when you get bored try a bigger a/r.
Old Aug 16, 2018, 07:20 PM
  #20  
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Originally Posted by spdracerut
Yeah, I think the car is not in tip-top shape. Seems a bit laggy and I think down on power for that level of boost. So yeah, I think boost leak(s), causing the turbo to spin faster than it should, increasing back pressure. Just a guess.

any updates on gtx3584rs?
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