11-28-2005
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#1
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Join Date: Jan 2005
Location: Coon Rapids
Drives: 07' Z06, 16' Beta 300RR
Posts: 804
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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?
__________________
-When in doubt, Moar RPM.
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11-28-2005
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#2
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back in the saddle again
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Re: T66 A/R? on 88' supra
__________________
My street car runs low 11's and my race car's personal best is a mid 11....
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11-28-2005
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#3
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Join Date: Jan 2005
Location: Coon Rapids
Drives: 07' Z06, 16' Beta 300RR
Posts: 804
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Re: T66 A/R? on 88' supra
thanx, thats even better, get to keep stock hook up to the turbo....
__________________
-When in doubt, Moar RPM.
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11-28-2005
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#4
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formerly ecoli
Join Date: Oct 2003
Location: On the dyno
Posts: 4,892
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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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11-28-2005
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#5
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Join Date: Jan 2005
Location: Coon Rapids
Drives: 07' Z06, 16' Beta 300RR
Posts: 804
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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....
__________________
-When in doubt, Moar RPM.
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11-29-2005
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#6
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formerly ecoli
Join Date: Oct 2003
Location: On the dyno
Posts: 4,892
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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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11-29-2005
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#7
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Join Date: Jan 2005
Location: Coon Rapids
Drives: 07' Z06, 16' Beta 300RR
Posts: 804
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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?
__________________
-When in doubt, Moar RPM.
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11-29-2005
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#8
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formerly ecoli
Join Date: Oct 2003
Location: On the dyno
Posts: 4,892
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Re: T66 A/R? on 88' supra
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Originally Posted by CarPsyco84
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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Yea. But even a Q-trim is not anything all that huge in the Supra world. It all depends on how much power you want to make, how high you can rev the motor, and how much lag you want to put up with. A T67 with a P-trim is capable of around 700whp, a T66 should put out around the same.
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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11-29-2005
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#9
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back in the saddle again
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Re: T66 A/R? on 88' supra
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Originally Posted by ecoli
Yea. But even a Q-trim is not anything all that huge in the Supra world. It all depends on how much power you want to make, how high you can rev the motor, and how much lag you want to put up with. A T67 with a P-trim is capable of around 700whp, a T66 should put out around the same.
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 |
Wasn't that 689whp on a very unhealthy boost spike? (like 35psi?).
Still spools damm fast!
__________________
My street car runs low 11's and my race car's personal best is a mid 11....
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11-29-2005
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#10
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formerly ecoli
Join Date: Oct 2003
Location: On the dyno
Posts: 4,892
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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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11-29-2005
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#11
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back in the saddle again
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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.
__________________
My street car runs low 11's and my race car's personal best is a mid 11....
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11-29-2005
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#12
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formerly ecoli
Join Date: Oct 2003
Location: On the dyno
Posts: 4,892
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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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11-29-2005
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#13
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Reynolds number user
Join Date: Oct 2003
Location: grove/tempe
Posts: 3,553
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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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07 Ducati Monster S4R
00 honda elite 50 (64 mph braH!)
05 malaguti F15
04 E55 AMG
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11-29-2005
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#14
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back in the saddle again
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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.
__________________
My street car runs low 11's and my race car's personal best is a mid 11....
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11-29-2005
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#15
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Join Date: Jan 2005
Location: Coon Rapids
Drives: 07' Z06, 16' Beta 300RR
Posts: 804
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Re: T66 A/R? on 88' supra
when do the valves start to float on those supras anywase...
__________________
-When in doubt, Moar RPM.
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11-29-2005
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#16
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Join Date: Jan 2005
Location: Coon Rapids
Drives: 07' Z06, 16' Beta 300RR
Posts: 804
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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...
__________________
-When in doubt, Moar RPM.
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11-30-2005
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#17
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Admin
Join Date: Oct 2003
Location: Sportsman's Paradise, LA.
Posts: 5,382
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Re: T66 A/R? on 88' supra
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Originally Posted by CarPsyco84
when do the valves start to float on those supras anywase...
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It really depends on what cams and springs are used.
__________________
"You don't have a clue. You couldn't get a clue during the clue mating season in a field full of horny clues if you smeared your body with clue musk and did the clue mating dance."
When she get's bitchy, SPANK THAT ASS! (#Y#)
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11-30-2005
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#18
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formerly ecoli
Join Date: Oct 2003
Location: On the dyno
Posts: 4,892
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Re: T66 A/R? on 88' supra
Quote:
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Originally Posted by CarPsyco84
hey, that dyno is on a 2JZGTE, I'm lookin for info on hte old school motor, the 7MGTE...
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Well, both are 3 liter motors and the 2JZ head isn't anything to write home about, so unless the 7MGTE is a total pile of crap(the intake manifold might be) the results should be somewhat similar. |
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11-30-2005
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#19
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Join Date: Jan 2005
Location: Coon Rapids
Drives: 07' Z06, 16' Beta 300RR
Posts: 804
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Re: T66 A/R? on 88' supra
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Originally Posted by 1ViciousGSX
It really depends on what cams and springs are used.
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stock ones.... doesn't look like to many people rev past 6500 or 6800 on those motors...
__________________
-When in doubt, Moar RPM.
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11-30-2005
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#20
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Admin
Join Date: Oct 2003
Location: Sportsman's Paradise, LA.
Posts: 5,382
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Re: T66 A/R? on 88' supra
Quote:
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Originally Posted by CarPsyco84
doesn't look like to many people rev past 6500 or 6800 on those motors...
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Are you sure about that?
__________________
"You don't have a clue. You couldn't get a clue during the clue mating season in a field full of horny clues if you smeared your body with clue musk and did the clue mating dance."
When she get's bitchy, SPANK THAT ASS! (#Y#)
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