Fairly simple question, has probably been asked before. Can anyone suggest a diy product readily available in the UK for painting the cylinder block of a 1970 Triumph unit 650. I do not have a spray gun but there seem to be a number of heat resistant spray can paints on the market. Obviously stove enamelling would be best but have been told this can lead to overheating problems, also trying to keep cheap - spent an absolute fortune on renovation so far!!. Should the finish be gloss or matt, presumably matt would give better heat dissipation. Thanks