Turbine id help. (P or Q?)

[disco stu]

I am comparing a Turbonetics (Cotton) CPT65 p trim and an Innovative T70 also supposedly a p trim. I was going to swap the .84 on the 65 to the Innovative, however the Tnetics turbine is notably smaller than the Innovative.

The housing outlet on the Tnetics is 2.685.

The innovative is 2.750.

Does anyone know what the wheel diameters of the P and Q trim wheels are?

 

[disco stu]

Edit to above, Tnetics outlet is 2.585

 

[455 pont turbo]

Stu: I looked in my Turbonetics book.

P trim exducer diameter is 2.544." Q trim is 2.693." Major diameter of P = 2.922" and Q = 3.111."

I hope this helps! Any other questions, I can look in the book again.

Mark

 

[disco stu]

Thanks for the reply. Major measures 3.111, exducer measures 2.703. Looks like a Q.