Prolific Poster Award
Join Date: Jul 2010
Location: Grass Lake, Mi, USA
I removed all the casting flash from the head and cylinder fins , even behind the belt housing, with a combination of Dremel bits and drill bits. I used a drill bit on a variable speed drill to open narrow points between fins to a consistent gap. After painting the cylinders I may polish the edge of the fins. I haven’t decided yet. Will this result in a cooler running engine ? Maybe, but probably not. Casting flash closed off air flow behind the belt housing on mine though, and now air can flow through.
'96 Ducati SS900CR, '07 S4RS, '06 Busa, '77 Bonny,
'00 Superglide, '85 Sportster, '78 SR500