Hi guys,
I am rebuilding my S38 B36 3.6 Engine to go into E30 M3.
I want to port and polish the Head. My question is with how much I have to port the head ? Intake and the exhaust. 1mm bore open ?
My goal is to make some small upgrades to have a better and easy going air flow, not HP.
I got JE pistons and raised the compression from 10.1 to 10.5 like on (B38 3.8).
I have also 3.8 cam gears marked A108 E108 with turner chip.
Thanks for your time
Anri