What does a Qtrim and a Ptrim wheel measure?

[SPEEDSTAR]

Any body know what each one measures, just thru the exhaust housing hole , the dia. that you can see , without disassembling the turbo.?

thanks JEFF

 

[Russ Merritt]

P-trim 2.544 exducer dia.
Q-trim 2.693 exducer dia.

 

[SPEEDSTAR]

Thanks Russ, mines definetly a p-trim, I know I ordered a p-trim,but I got to lookin at it and it thought maybe its a q trim by mistake cus it looked really big , oh well , p-trim it is !

 

[Russ Merritt]

Nothin wrong with that! The major diameter (the part you can't see) of that wheel is 2.922 and a Q-trim is 3.111

 

[REDS HOT AIR]

so are all big shaft turbos the same wheel if they are the same trim??

mines p-trim 70-1 so will say the housing off a 63 or 72 be the same long as they are p-trim?

 

[Intercooler]

Originally posted by REDS HOT AIR
so are all big shaft turbos the same wheel if they are the same trim??

mines p-trim 70-1 so will say the housing off a 63 or 72 be the same long as they are p-trim?

Yup! I had Craig send me a Garrett .63 the other day to replace the 4 bolt housing coming on the other 70 I am getting. A "P" is a "P". The change is in the compressor wheel where you find trouble.

 

[REDS HOT AIR]

thats nutz...

at some point it has to change right??

t-88 and stuff like that???