Ceramic coating vs. Polishing
Ceramic coating vs. Polishing
(OP)
I know the effeciveness of ceramic coating is kind of a controversial issue, but I was wondering what you guys thought. I understand how polishing helps by minimizing surface area, but does it really "reflect" heat? What are the advantages of each in the combustion chamber of the head and the piston crown in a 4 stroke turbocharged engine? How about in a N/A engine?





RE: Ceramic coating vs. Polishing
RE: Ceramic coating vs. Polishing
RE: Ceramic coating vs. Polishing
Why the adversion to coatings --- I was of the impression they were effective if properly done [ Swain seems to be a respected outfit].
Is your concern piston temps ??? Oil squirters can reduce crown temps but may be a pain to install if not offered in a stock block.
Jim
RE: Ceramic coating vs. Polishing
RE: Ceramic coating vs. Polishing
There's the link. In what ways could his experiment not represent actual combustion chamber effects? He mentions radiant vs. conductive heat, but I don't know what to think. What do you guys think about it?
RE: Ceramic coating vs. Polishing
I was under the impression that the big boys used plasma deposition or some such application process not available to the home user.
Jim
RE: Ceramic coating vs. Polishing
Ceramic coatings are very thin and only offer a minimal thermal barrier because of that.
Meaningful tests would need to measure rates of heat transfer, not surface temperature changes, as a good insulator will actually get hotter on it's surface, but stay cooler in it's matrix if it is exposed to a heat source for a short time.
Applying a gas torch flame sounds like a very unrepeatable test to me.
Regards
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Ceramic coating vs. Polishing
RE: Ceramic coating vs. Polishing
Nick
"Speed costs money boys, how fast do you want to go?"
RE: Ceramic coating vs. Polishing
RE: Ceramic coating vs. Polishing
RE: Ceramic coating vs. Polishing
Jim