Well, I bought these B16B pistons from a guy and he said that they were 12:1 compression pistons. That what he thought they were. He said he was pretty sure. I look up the B16B CTR pistons and they are only 10.8 compression. I got flat Supertech Racing Valves to bump up the CR a lil more to maybe 11.00
or 10.9. So What I am asking is is this what the B16B pistons really are, and if so would it be a bad move to shave the head .010. I would do this only to bump the CR a hair higher, i will be using 91 Octane gas to let ya know. What else should I do for CR better? In the low 11's is fine, but the only thing i cna do is to shave the head .010. I am also getting alot of head work done too. What do ya think?