sdstang said:I was planning on sanding and polishing the rough finish off the outside of the cylinder, but a friend of mine mentioned that this could affect heat dispersion
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sdstang.
If it is a water cooled bike then it would probably not affect it much if at all.
If you are talking about a air cooled bike with fins, then yes. The roughness on a fin gives the fin more surface area and allows it to cool better. Polishing the fins will decrease the ability of the fin to cool.
Just my $ .02