Greddy T-88 to borg warner 475
#32
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Thanks for sharing the numbers. The drop seems to be as per T88 I use on my car, but with less boost and less power you have made (mine is D33 with 18cm2). I was thinkng of going the BW475SX3 route as well. However, you can get different exhaust hausings for the BW475SX3, what size are you running, or what size was it on for the above dyno run?
#33
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I am running a t4 1.10 hot side and 4" exhaust. Maybe I will end up going with a larger a/r.??? Come to think of it my t88 showed the same drop at top end. I am still running the Greddy manifold, I wonder if it could have anything to do with exhaust manifold design??
#34
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At what rpm are you guys that run the 1.32 t6 housing hitting 5, 600whp mark? Is there much differnce in my hp curve vs yours? Other than the power dropping off of course.
#35
Turbo manifold is not the issue.
There is a restriction somewhere, be it the engine porting, fuel flow, turbine wheel/housing, or intake manifold...
I have also seen this same curve style on other engine/turbos setups.. Only ones I haven't seen it on are engines with aftermarket intake manifolds and proper fuel pumps...
I am building several cars right now with over the top setups and I am bound and determined to figure out this issue once and for all. I hope to be in the 800rwhp range..
#37
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@ 13B-RX3
what exhaust housing was it please?
As you are using the 4 barel intake, no IC, no muffler, you are not limited by other factors I would say.
I would love to see that power band on my car, but it looks not possible to me as my car is street legal.
what exhaust housing was it please?
As you are using the 4 barel intake, no IC, no muffler, you are not limited by other factors I would say.
I would love to see that power band on my car, but it looks not possible to me as my car is street legal.
#38
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I do not like the Greddy manifold and there for I do not run one. Even I do not like the manifold, if yours is 60mm unit, you are OK IMHO.
#42
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Turbo manifold is not the issue.
There is a restriction somewhere, be it the engine porting, fuel flow, turbine wheel/housing, or intake manifold...
I have also seen this same curve style on other engine/turbos setups.. Only ones I haven't seen it on are engines with aftermarket intake manifolds and proper fuel pumps...
I am building several cars right now with over the top setups and I am bound and determined to figure out this issue once and for all. I hope to be in the 800rwhp range..
13B-RX3 thanks for sharing but **** man.... I sure do feel depressed now
#44
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There is a restriction somewhere, be it the engine porting, fuel flow, turbine wheel/housing, or intake manifold...
I have also seen this same curve style on other engine/turbos setups.. Only ones I haven't seen it on are engines with aftermarket intake manifolds and proper fuel pumps....
I have also seen this same curve style on other engine/turbos setups.. Only ones I haven't seen it on are engines with aftermarket intake manifolds and proper fuel pumps....
#48
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I am running the t78 greedy manifold, with the "s400" t4 75mm turbo
1.25 ar ext housing. My power also drops off at about 7k rpm. I would have to say it's
The factory manifold. I've run a best time of 9.60@147 w/ 30 psi short track , and 35 psi top end tracK. This is also with no street porting on intake, jus a 2mm ex port
I'm at the end of the "stock" port venture I really wanted to run 9.20's but it's almost impossible with my race weight of 2870lbs, I guess it's time to go on a diet
And get this bitch to run a number!!!! Lol
1.25 ar ext housing. My power also drops off at about 7k rpm. I would have to say it's
The factory manifold. I've run a best time of 9.60@147 w/ 30 psi short track , and 35 psi top end tracK. This is also with no street porting on intake, jus a 2mm ex port
I'm at the end of the "stock" port venture I really wanted to run 9.20's but it's almost impossible with my race weight of 2870lbs, I guess it's time to go on a diet
And get this bitch to run a number!!!! Lol
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