I totally agree Diablo. it's been proven that dark colors have a much better heat transfer capability than even the dullest looking cast metals. Considering the layer of paint is only a few thousandths of an inch thick, its really too thin of a layer to do much in the way of "insulating" or acting as a heat blocking layer to keep heat in.

Certain paint products or coatings that are commercially available actually have a better heat radiation capability than bare metal. these coatings are used in many automotive and motorcycle racing applications to help dissipate heat and keep the metal itself cooler. "Moly" piston top coatings, components coated with refractory (but still "clear") platings, and even more temperature dissipative metal platings all help to offload heat from these highly stressed engines or prevent its absorption in the first place. Perhaps our engine manufacturers should look into this. I'm sure there are some power gains that could be economically incorporated into our engines that would involve nothing more than a moly coating on top of a piston or keeping the incoming fuel-air charge cooler for as long as possible.

IMHO 3W would never paint their cylinders if it raised temps more than a marginal amount. Someone is quoting figures here that has not done any real research. . sort of like those bogus Hp numbers we see or the claims of 106cc motors swinging 30-10 props at 6000 rpm. . . hard to belive ANYONE actually tried to foister THAT claim on us

BTW. . I've READ most of the books. . I just refuse to be limited by them. (don't you know Logic SUX??)