turbo id numbers

[fleebag]

what does the stamped numbers inside the turbo mean? in the 2.5" out towards intercoolr.

thanks inadvance

 

[dr_frankenstein]

if its a stock turbo, with the .60 A/R stamped inside thats the A/R ratio of the housing you have.

A.j.

 

[fleebag]

i bought a used turbonetics 66, and noticed it had 55 stamped inside the exit side.