alright so heres my setup
b20z block (stock pistons with cut valve reliefs)
gsr head with s2s2 cams
stock oem 3 layer headgaket

now i know the compression on this is gonna be pretty low. according to c-speedracing i am looking at about a 10.2 compression ratio. i want to bump up the compression a little WITHOUT GETTING NEW PISTONS. So my question is how much should i take off the head to get a little bit more compression. Should i just take off a layer of the headgasket? Any experienced engine builders please chime in!! thanks in advance

 

You cant really mill a gsr head that much, maybe 20 thousandths max. The S2S2 you are planning to use may not make its full potential because the compression is kinda on the low side. Try using stage 1's. My friend had a similar set-up with port and made 195hp 141tq