gazzaecowarrior Posted March 18, 2009 Report Share Posted March 18, 2009 Was wondering whether anybody knew if the fins on the cylinder and cylinder head are aluminium or some ferrous type metal. Just bought a Ty 175 and the cylinder and head look like they have more paint on them than a desert tank. Was hoping to have them shotblast and polished if they were aluminium. Has anybody tried this ? Regards Gaz Quote Link to comment Share on other sites More sharing options...
feetupfun Posted March 18, 2009 Report Share Posted March 18, 2009 Head aluminium Cylinder aluminium with ferrous liner Quote Link to comment Share on other sites More sharing options...
gazzaecowarrior Posted March 18, 2009 Author Report Share Posted March 18, 2009 Thanks for that. Looks like hours of polishing are ahead of me. Quote Link to comment Share on other sites More sharing options...
paul w Posted March 18, 2009 Report Share Posted March 18, 2009 (edited) hours of polishing, but i wish i had'nt. the fins need constant attention to stop them furring up, some day i will get round to taking the top end off and painting black. p.s. i know the case screws are a right mess, i could'nt wait to take the photos so i stuck the old ones in. Edited March 18, 2009 by paul w Quote Link to comment Share on other sites More sharing options...
majesty320 Posted March 18, 2009 Report Share Posted March 18, 2009 I stripped the paint off my 250 and had them vapour blasted looks great, when it comes back from rebore I will post pictures Quote Link to comment Share on other sites More sharing options...
jse Posted March 19, 2009 Report Share Posted March 19, 2009 hours of polishing, but i wish i had'nt. the fins need constant attention to stop them furring up, some day i will get round to taking the top end off and painting black. If it's any consolation, we did some heat dissipation testing years ago (before liquid cooling was the norm) on raw aluminum MX engine parts vs. flat black and found that the flat black finish on aluminum parts reduced temperatures by up to 15%. A satin black finish (which would look better) would probably yield a little less effeciency but still was better than the natural finish. A rough, as-cast surface was better at heat reduction, rather than a smooth, polished surface, probably due to the greater surface area. Jon Quote Link to comment Share on other sites More sharing options...
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