so i have a gsr turbo pushing 8psi. eventually i would like to run around 12-13 street. i know to do this i will need a new head gasket. what thickness would i need, also what will it reduce my compression 2. i hear one will drop it to 9.5:1. an help will be GREATLLY appriciatted!!!!!!!!!!!

 

best way to drop compression is with new pistons. drop it to 9:1 and boost to your hearts desire. just make sure you have a good tune.

 

yea i agree, its most cost effective.

 

A thicker headgasket is not a good idea. It makes the quench zones of the combustion chamber less effective and creates a larger surface area for detonation to affect and possibly blow out the headgasket. Just get some lower compression pistons and some stronger rods and you will be set for a good amount of boost as long as it is properly tuned.

 

Just make sure you get it tuned. My tuner runs 9.8:1 pistons and 16psi.

 

yeah tunning is probably the most important thing i hear...im debating on boost but i dont know anyone that tunes well. I guess i gotta keep doing research. Goodluck!