Does anyone have some information on actual test results and hard data in regards to ceramic coating combustion chamber parts? I understand that the coating increases thermal efficiency, but by how much? I plan to have my piston crowns and the chamber area of the head coated. My understanding is that the insulating properties of the ceramic will reflect the heat energy back into the fire, letting it extract more energy out of the fuel. HC emissions should be lower because you reduce the rapid cooling that affect parts of the mixture in contact with the chamber walls. Exhaust gasses should be hotter and therefore lighter, this should increase flow through the exhaust and therefore turbo spoolup (plan to coat the header, turbo housing and downpipe). Under hood temps and general operating temperature should be lower because less heat energy will be absorbed by the engine and exhaust parts. This should increase oil life and give the ability to run thinner oil. Am I correct in my thoughts here? How material are these gains? What about ceramic as an aid to reduce friction? Some piston manufacturers offer ceramic-coated skirts. How does this help? Could the same principle be applied to maybe valve stems to reduce valve train friction? Again, how material are the gains? Where can I read about research done on the topic?
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