I conducted heat tests on both the Whizzer WC-1 and NE motors. Painting the cylinder with black engine enamel [Dupli-Color #DE1613] reduced the operating temperature by an average of 65 degrees on the WC-1 and 55 degrees on the NE motors. I usually "bake" the paint in an oven for 1 hour at 300 degrees to avoid the curing smell during motor break-in. Before I started offering ported Whizzer cylinders, I conducted research on the internet only to find everyone had different ideas concerning painted cylinders. After a brief trip down memory lane, I suddently realized almost all the cylinders were painted black on all my race motorcycles [1960 to 1980]. I thought maybe the factories might know more about heat contol than I did, so I conducted tests on the Whizzer motor to convince myself of the need to paint the cylinders. Because of my personal test results I won't sell any modified cylinders unless they are painted with black heat paint.
Whizzer OuterBanks,
Quenton