This is what KB pistons has to say about ceramic coatings
What do you guys think?????
http://www.kb-silvolite.com/page07.htm
"" Various piston, cam, valve, chamber and port configurations have been and
are currently being tested to optimize engine internal temperatures. Some
engines have ceramic exhaust port insulation liners that allow cooler
cylinder head operation, while keeping exhaust temperatures elevated for
efficient catalytic converter operation. The same ceramic-type insulation on
a piston top has not been quite so successful. Ceramic insulation on pistons
can insulate the piston too well. The piston stays cool while the very top
surface gets so hot that the intake air is immediately heated on contact
with the piston. The heated intake charge expands and reduces the air flow
into the cylinder. On the compression cycle, the now over heated intake
charge offers more resistance to being compressed and, because of the higher
compression pressure and temperature, is more likely to detonate during
combustion. Ideal piston temperatures in an operating engine would suggest
refrigeration during the intake and compression stroke, and incandescence
during the combustion and exhaust stroke. The advantage of a hot piston on
the power stroke is that less combustion energy is going to be absorbed by
the piston. So far, it is not practical to heat and refrigerate a piston
6000 times a minute. However, if the incoming air is not heated by the
piston and the piston reflects the heat of combustion, you start to approach
ideal conditions. A polished hypereutectic piston will reflect combustion
heat back into the combustion process. This reflection, combined with the
insulating qualities of the hypereutectic alloy, keeps the heat in the
cylinder during the power stroke. A smooth polished piston runs cooler than
a non-polished piston, even after combustion deposits have turned both
pistons black. A cool, smooth piston will transmit a minimum of heat to the
incoming fuel air mix. ""
Also lots more reading here
http://www.kb-silvolite.com/1toc.htm
Turbo Rick
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