so what i am planning on building i ran it thru a compression checker and it says 11.81:1 that is gsr block with gsr crank, itr pistons with gsr head and 2 layer head gasket.... i thought about using ctr pistons but from what i have been reading it tends to have problems..... but anywho i was wondering if 11.81:1 compression will be safe on 92 octane fuel.. and how should i exprect it to perform.. and or what lil tweeks can i do to create a safe amount of compression for 92 octane fuel...
sorry if im all over the place
thx in advance

 

and it also says piston to deck height .026???????

 

bump!

 

According to http://www.bojangs.com/calculator, your compression with USDM ITR pistons would be 11:1, JDM ITR pistons would be 11.5:1. But whether it's 11:1, 11.5:1 or 11.8:1, you'll be fine on 92 octane as long as your tuner has the slightest idea what he's doing. My car's running fine on 93 octane with 12:1.