compression ratio

sage · newbie Joined: 22 Aug 2002 Posts: 9

im going to run a t03 turbo on a g200 soon. whats the recommended compression ratio? im LOOKING at using around 15psi. how much would i have to decompress it to have that amount of boost?

Ben Wight · backyard mechanic Joined: 04 Oct 2001 Posts: 946

If running a G200 head, then simply get the pistons dished and that should give you around 8.0:1. Maybe less, I'm not sure of the combustion chamber size of a G200 head.

Regardless, with the right fuel mix, ignition timing and decent intercooling, you should be able to run 15psi on 9.0:1.