First off i have done research but i wanted insight from well educated BMW enthusiasts.
I am rebuilding my M20B25.
I have the head completely disassembled strategically and am sending to a machine shop for pressure test and resurfacing.
Everything appears to be in excellent shape but it has 150k on it and i plan on boosting.
Would it be better to replace valves, rockers, valve springs with aftermarket brand new or reuse the OEM parts.
I'm new to the group and just bought this motor.
Any insight would help
Thanks!
