T66 A/R? on 88' supra
here is a question for the pro's. My buddy was lookin for a good sized turbo to maximize his stock motor. The T66 seems to be a good pick for the 3L 7MGTE. My question is what A/R ratio would be best for power from like 4k rpm to like 7, 7500rpm, I was thinking .81 A/R but maybe even .88?
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Re: T66 A/R? on 88' supra
http://www.suprasport.com/
Great turbo's! |
Re: T66 A/R? on 88' supra
thanx, thats even better, get to keep stock hook up to the turbo....
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Re: T66 A/R? on 88' supra
.68 if you want it to spool by 4000-4500 with a P-trim exhaust wheel.
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Re: T66 A/R? on 88' supra
cool thanx for the input, Got another question as long as were on these size turbos, whats the difference between P-trim and Q-trim and what effect does it have I think i've herd that p or q-trim cause slower spool, but I don't know why....
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Re: T66 A/R? on 88' supra
Q-trim is bigger than a P-trim, so it's a big laggier. The GTQ-trim versions aren't too bad though. A Q-trim over a P-trim can be worth worth up to more 50HP on a turbo that size.
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Re: T66 A/R? on 88' supra
So one can assume that Q-trim flows more air, and would be for like higher RPM hp than a P-trim, but you sacrifice spool time?
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Re: T66 A/R? on 88' supra
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Here is how Shaun's 3.0l Supra with a T67 P-trim .68 A/R spooled on the dyno. http://www.boostlogic.com/parts/supr...it67.html#dyno |
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Still spools damm fast! |
Re: T66 A/R? on 88' supra
It was probably like 31-32psi, which is more than the VPC map sensor could read. It made 664whp at 29psi.
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Re: T66 A/R? on 88' supra
SWEET!
Yeah, John was saying how it spiked higher than the map sensor could read. Is he still going thru fuel problems with the ems? (I remember hearing something about that this summer). 664whp @ 29psi is no joke. |
Re: T66 A/R? on 88' supra
Yea, he did cams, springs, retainers, and AEM, but he had all kinds of problems with the fuel system and gave up on it for a while.
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Re: T66 A/R? on 88' supra
he said SCREW IT and bought another ducati. considering his cash flow and his competitive nature i wouldn't be surprised if his car ended up with a gt42 on it in a few months.
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Re: T66 A/R? on 88' supra
Sweet, that'll make like 1/2 a dozen local imports with a gt42.
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Re: T66 A/R? on 88' supra
when do the valves start to float on those supras anywase...
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Re: T66 A/R? on 88' supra
hey, that dyno is on a 2JZGTE, I'm lookin for info on hte old school motor, the 7MGTE...
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