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what is the biggest turbo that fit on the stock manifold...
Posted: Sun Dec 12, 2010 9:42 am
by aep886
GT28RS???
Posted: Sun Dec 12, 2010 9:51 am
by GAS
I, would reckon almost any turbo combination with a T3 exh. housing. Hope that helps?
Posted: Sun Dec 12, 2010 9:57 am
by aep886
GAS wrote:I, would reckon almost any turbo combination with a T3 exh. housing. Hope that helps?
you sure you not talking about T25/28?
T3 is top mount???
Posted: Sun Dec 12, 2010 10:03 am
by GAS
On the 20Det Motor 25/28 and on th RB25 a T3. Sorry, did not know what you've got

Posted: Sun Dec 12, 2010 10:28 am
by NIZAN-R
gt2876r goes like stink with some cams
Posted: Mon Dec 13, 2010 4:53 pm
by djtreble
Yeah GT2876R is the biggest I've had and I couldn't imagine much else fitting in there. But you need to do some work to get it to spool acceptably early enough. I did everything I could excpet for some cams and it hit full boost at 4500 rpm on a CA18DET.
Posted: Tue Dec 14, 2010 3:55 am
by NIZAN-R
i am thinking on doing gt2871r on my ca will it be good with the a 53 rear housing?
Posted: Tue Dec 14, 2010 10:31 am
by djtreble
They are all 53.8mm on the rear (exhaust) housing from Garret
On the Compressor side however, you get the following:
52 Trim = 51.2mm = 250-400 bhp
56 Trim = 53.1mm = 280-475 bhp
The 56 Trim is laggier, commonly people go for the 52 Trim as it's a good balance between power and spool time on the CA and SR (smaller capacity engines)
There are other versions available but they are rare as far as I know.
See here for Garrett's tech sheet on 2871 and more in the range:
http://www.turbobygarrett.com/turbobyga ... _sheet.htm
Posted: Tue Dec 14, 2010 6:18 pm
by aep886
maybe i must just go top mount like my old setup on the S15.....GT3037S-pro^^
Posted: Tue Dec 14, 2010 6:19 pm
by djtreble
What are you looking at achieving?
Posted: Tue Dec 14, 2010 6:20 pm
by aep886
djtreble wrote:What are you looking at achieving?
the setup on my S15... HKS2,2 +GT3037s-Pro = 450hp at rear wheel
@ 1,9bar
Posted: Tue Dec 14, 2010 6:22 pm
by djtreble
If you don't want to go top mount then you can get that out of a GT2876R with the 56 Trim at a stretch.
Either way you are looking at a laggy car unless you go heavy into cams, etc.
Sounds like a beast though!

Posted: Tue Dec 14, 2010 6:25 pm
by aep886
on the GT3037s-pro turbo only kicks in at 4000rpm...
so would expect the GT28 no later then that....
Posted: Tue Dec 14, 2010 6:26 pm
by djtreble
I don't have personal experience with the GT30's, is that proven or by hear-say?
Posted: Tue Dec 14, 2010 6:36 pm
by aep886
djtreble wrote:I don't have personal experience with the GT30's, is that proven or by hear-say?
forgot to say i have Stage 3 head package from HKS too... GT30pro... is the best i have experience... i had Trust T67-25G on the same setup with 398hp... and it has much bigger compressor but it came no where near the GT30 pro