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Old 05-28-2013, 01:28 PM   #18
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Location: Brighton England
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Default Re: Question about connecting rod polishing

Originally Posted by HRC View Post
Be sure NOT to polish the piston skirts, the roughness/machined ribs is what holds the oil there....and dont do the intake ports either...port them, port match them, raise the floor, etc etc, but the slight roughness creates minutte turbulance right at the surface which keeps your fuel in suspension. Polished intake ports can lead to fuel dropping out of you A/F mixture on the slow side of the port....this means poor performance and possible washed out rings in severe cases.

I was going to say that Jerry Branch did some work on Polished intake ports Verses Un-polished ports, and I seem to remember he found that contrary to popular belief,rough tracts gave more power than polished ones................I think he put it down to the roughness would tend to swirl/mix the fuel with air better..........
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