[The Forbidden Supra]

I was wondering if anyone knows how a larger or smaller compressor housing would affect a turbo's performance... spooling, air flow, air temps, etc. I've always wondered, but never read anything about it. I noticed some turbos, such as the T72, have different size housings, at least between from different manufacturers. Does the same type of turbo from different manufactures generally perform exactly the same? Some of them look quite different.

-Paul

 

[Steve Theodore]

I was forced into a larger compressor housing on my PT63 (larger than the PT67 has). I was told that it does increase lag but also provide more top end power.

Steve T.

 

[Ray745]

how do you mean forced steve? just for the power goals you wanted or for some other reason?

 

[Steve Theodore]

Forced as PT doesn't offer the PT63 with the smaller housing that the 67 comes with. No idea why, but this is what BoostLogic told me when I bought mine (and they didn't know this until my order).

Steve T.