Quote Originally Posted by AllMotorB16a View Post
stock jdm conrods stock jdm p30 pistons 1 layer gasket 0.030'' off the head 8000rpm operation... and the calulator came up with 12:10:1
must be an error man, shaving the head is only a minor increase in comp, 12.1:1 is a LOT to come from just a 30 thou shave and thin gasket.

30 thou is very thin, like a few sheets of paper.