coatings

[slomodiesel]

anybody ever use ceramic thermal coatings on piston tops and cylinder head? if so how well do they work?

 

[Philip]

I have used them on pistons before in a small block chevy. It was used in a stock car engine. It held up well. I didn't do the heads on the engine. So I am not sure how much help it would be there. I was using alumin heads, fully ported so I didn't want to take a chance of messing them up at the time. It was a new concept at that time.



The biggest difference I saw in the use of it was I was able to lean the engine down a couple of jet sizes and still get a clean burn on the engine. The flame pattern on the piston top was the same as a noncoated piston. I didn't notice the engine running any cooler with the coatings. But the heads would have been the part transfering the heat into the coolant. So with them not coated I wouldn't expect to see a difference.



The normal operating range for the engine was from 4,500 to 8,000 + rpm range.

 

[MDW]

I have been using them for years.

www.polydyn.com