Can someone explain what is gained by having internal engine parts coated in a thermal coating??

 

makes detonation of pistons less likely to occur due to higher heat protection and most of them have less wear on the cylinder bore due to the "more lubricated" finish of the piston. Not the most technical word I've ever used. Try to find some information on PolyDyn in Houston. They are really good. Also check out Pro Coat http://www.procoat.co.nz/performancecoatings.html

They do valves, bearings, and just about anything you could imageine.
Hope this helps

<small>[ June 22, 2002, 10:41 AM: Message edited by: The Derek H ]</small>

 

differant thing are doen to differant engine parts.

you have oil shedding compounds that are aded to the crank throws, rods ect that shed the oil better than non coated parts. less windage = more hp.

call polydyn, there in houston texas and talk to carl bennet. he can answer the questions you have and more.

btw, most all the nascar guys run coated engine parts.

steve frank

 

I use coatings in everything I've built, for main and con rod bearings, piston skirts and piston crowns. I've never spend the money on the coating that shed oil because I prep the oil valley and use windage trays. At 7500 RPM or less I've never been able to dyno any difference.

Story:
I ran out of oil pressure half track, drove down the return road, up on the trailer, and off into my garage. Pulled the motor apart and the mains and rods all had the same tolerances as when I put it together (I record them for each build). The ceramic coating on the piston crown has come off with borderline tuning, except for only one coating shop on the East coast, whose name escapes me. But I'm firmly convinced that without the coating, it would have been the top of the piston that came off instead.

Good stuff,
SC