Hi

I want to know if anybody knows how much boost you can go with the stock apex seals. I have a T51 kai and is running 20 psi with stock seals. Is that ok or should I be carefull by doing that..??

Thanx

 

Stock seals will handle that no problem.

 

Thanx. You do not know the max boost on stock seals...??

 

It is mostly dependent on the quality of tune you have.

 

I run 20-25 psi on mine no issues. I spiked it to 35+ lbs a couple times by accident. Ernie ran 31 psi on his GT42R which is bigger than your T51 with no issues and ray ran his 32 lbs all of a season with no issues. Its mainly in the tuning, motor condition, gas you are running.

 

I don't think the GT42R is bigger than the T51SPL. The compressor wheel inducer on the GT42R is 74.5mm, the inducer on the T51SPL is 76mm.

 

I know of five wheel trims on 42R's I can order 70/94(T51RKAI), 72.5/94, 72.5/102, 74.5/102, 76/102 Those are actual wheels not re-contoured ones. Ernie is running the 74.5/102 I do believe the SPL is 102 also. You can get 78/102's as well but those are not considered 42R wheels technically.

-S-

 

I thought he had a kai t51, but nontheless, both turbos are big and produce high volumes of airflow.