I hear the general consensus is that porting the M42 intake ports at the head is a bad idea. The ports are already matched pretty well and it just introduces a larger chance of air/fuel flow disturbance rather than optimization.
How about polishing? I noticed, at least on the E36, the ports around the valve is polished, or at least its not as porous. Has anyone taken the effort to do this?
Just thinking of things I can do while I have the head stripped down.
How about polishing? I noticed, at least on the E36, the ports around the valve is polished, or at least its not as porous. Has anyone taken the effort to do this?
Just thinking of things I can do while I have the head stripped down.
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