Silas

i know all the popular turbos but i was wondering what are the max psi for all the popular turbos such as the t series or the garrett thanks if anyone know off the top of there head

Silviaspeed

Your best bet would be to speak to a Garret Rep., or authorized dealer for the specs. Turbo's can vary so much. Generally though:

T25 good to 17psi, max. efficiency.
T28 18psi or a little higher
T3 20psi or a little higher
T3/T4 22psi-25psi, or a little higher
T4 25psi-30psi
Anything larger, and you get the picture.

I'm just taking a stab at this, like I said they can vary greatly depending on A/R ratio, impeller design and size, etc. etc.

ridesnowx4

It also depends on the turbo itself... what brand is it, if its been rebuilt, if it has diferent bearings, turbine, compressor... ect.

Silas

i know it depends i just wanted to see if people have a general idea off the top of there head