88mm turbo question

[Brent Davis]

Has anyone here made over 32 psi of boost with a 88mm turbo? I am wondering if mine can go to 38-40 psi.

 

[86brick]

Cal has done it...

http://www.turbobuick.com/forums/showthread.php?s=&threadid=155738

Also, I know a few of the Supra guys like Marko have run over 40psi with the GT47 88.....

 

[John Wilde]

Just because the turbo will make more boost does not mean it will make more power. Don't quote me but I thought Joe Lubrant told me the standard PT-88 starts to blow warm around 34psi.

Whe had this issues with older twin turbonetics 76 Qs.
The car did not go any faster at 35psi than it did at 30.
The air inlet temps sure did go up though.

 

[86brick]

Originally posted by John Wilde
Just because the turbo will make more boost does not mean it will make more power. Don't quote me but I thought Joe Lubrant told me the standard PT-88 starts to blow warm around 34psi.

Whe had this issues with older twin turbonetics 76 Qs.
The car did not go any faster at 35psi than it did at 30.
The air inlet temps sure did go up though.

Yep I know years ago Orlando proved that the 66 Qtrim turbo was done at around 35psi because he had run 40psi with the turbo several times and didn't go any faster.....