hialeahzbg

i have a stock gsr motor with a t3/t4 60 trim garett turbo....where do u guys hit full boost at? in 2nd gear im full boost at about 5k rpms....i was thinking im trying to make my turbo dual ball bearing...anyone ever done this to their stock gsr ot turbo? how much and where do i buy it at?

Schister66

1. Spool is going to depend on the manifold, dp and exhaust
2. Swapping the stock CHRA for a BB CHRA isn't going to have the effect you're hoping for....it is merely a good way to waste money. The compressor and exhaust wheels in a BB GT series turbo are designed specifically for the BB CHRA; whereas, the compressor wheel in your 60 trim is not. You're not going to see any gain other than in the realm of transient response. Spool time will stay the same. You could use the money somewhere else more effectively.
3. On my last setup w/ a log manifold and 2.5" exhaust, i was hitting 9psi at 4600rpms in 3rd gear...


-If you want better spool, get a different turbo, but DO NOT waste your time and money on a BB CHRA swap as it isn't going to do a thing for you....if you need help picking out a turbo, PM me...i can help you out a little bit seeing as we're both in the same situation...

sc4dr

Just remember quicker spool means more wheelspin, and new tires more often.

hialeahzbg

so is my setup fine how it is?

is it true an aftermarket intake manifold will help spool a little?

envee

what is your power goal? what is the rest of your setup? whats the ar on your turbo? need lots more info.

sc4dr

Just replace little things as you go. It's hard to give facts, because everything effects hp differently.

Mine spools quick because I'm running a 2.0L gsr, and higher boost levels, so the ramp up is huge.

GetawayInMoscow

I have a B16 with a 60 trim .83 a/r and I hit full boost at like 4800

whats your vtec xover at? mine is 4700

hialeahzbg

ok its a bone stock gsr....ramhorn maniold,3 inch dp and exhaust,hks ssqv bov,turbonetics evo wastegate wit a 9psi spring....the turbo its 60 trim and the ar is .63....

hialeahzbg

i wanna make the most out of the motor without having to open my motor up...im looking for 350ish whp...ima up the boost to 11 or 12 psi....

sc4dr

To make 350hp you'll need 12-15 psi. you should be happy with that for a while.

hialeahzbg

yea...

Samuels

I have the same turbo on my stock bore 1.6L b16 at 9:1 compression.. I make 421hp and i believe 280ish tq on 22.5psi.. But i don't get full boost till around 5500...

eleet

4600 seems about right.