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Old 01-26-2006, 03:07 AM   #1
NvrFstEnuff
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Cool man your really helping me out. Personally I didnt like the idea of the "sequential" anyways. Seems as if there would be a slight or even larger downtime where the boost drops for a bit then spools back up with the second one. What size are the stock turbo's on them now? I was thinking of going with a 60-70mm single and just keep the boodt at a low/moderate level for around 400 on the street which I used to do in my 89 mustang gt, and that was great. But come track time I want to turn it up a bit more to around 500+ if possible.
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Old 01-26-2006, 03:24 AM   #2
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Quote:
Originally Posted by NvrFstEnuff
Cool man your really helping me out. Personally I didnt like the idea of the "sequential" anyways. Seems as if there would be a slight or even larger downtime where the boost drops for a bit then spools back up with the second one...
Toyota invested a LOT of resources to make the sequential transition as smooth as possible. There is a separate actuator for the prespool...and the oem fuel & timing curves have been extensively 'tweaked' too. Oh, and it doesn't spool back up with the second one after the transition...it spools back up with both.

Quote:
Originally Posted by NvrFstEnuff
...What size are the stock turbo's on them now?...
CT12B's.

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Originally Posted by NvrFstEnuff
...I was thinking of going with a 60-70mm single and just keep the boodt at a low/moderate level for around 400 on the street...But come track time I want to turn it up a bit more to around 500+ if possible.
You don't need a 70mm turbo to make 500rwhp...a 60 would be fine.
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NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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Old 01-26-2006, 03:40 AM   #3
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Would a 60mm handle putting the car within 9 seconds of a 1/4 mile as long as the driving/rest of the car is supported with the proper equipment to handle the power.
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Old 01-26-2006, 03:46 AM   #4
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Quote:
Originally Posted by NvrFstEnuff
Would a 60mm handle putting the car within 9 seconds of a 1/4 mile as long as the driving/rest of the car is supported with the proper equipment to handle the power.
No...not unless you're spraying LOTS and LOTS and LOTS of nos too...
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Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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Old 01-26-2006, 03:50 AM   #5
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I was under the assumption 650rwhp is good for at least high 10s with the right driving/all else. Arent the 60mm's from Hks/Greddy good for 750 max..or is that Flywheel max?
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Old 10-09-2006, 04:23 PM   #6
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Quote:
Originally Posted by NvrFstEnuff
I was under the assumption 650rwhp is good for at least high 10s with the right driving/all else.
Your assumption is correct.

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Originally Posted by NvrFstEnuff
Arent the 60mm's from Hks/Greddy good for 750 max..or is that Flywheel max?
1) HKS/GReddy don't offer any 60mm turbo kits for the Mk4. Only the HKS GT wastegate is 60mm, coincidentally.
2) The smallest HKS turbo (T04R) and the smallest GReddy turbo (T78) are both about 67mm. They're good for about 675rwhp-700rwhp through a 6spd without cams, and about 725rwhp-775rwhp through a 6spd with cams.
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.

Last edited by pwpanas; 10-09-2006 at 04:26 PM.
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