[Terry M. Hunt]

I think I've read or heard about every means tried so far by people to prevent the paint from burning off on the heads. Nothing I've heard about in the last 36 years really works. Rereading an old article about ceramic coating on exhaust manifolds and headers got me wondering about something. Could you apply this ceramic coating to the inside of the exhaust ports and then to the outside surface also of the bare head? Then paint the heads as normal. Would this provide enough insulation to keep the paint from burning off? Would this make the exhaust temps exiting the heads higher? Maybe higher enough that the exhaust manifold/header coating would then be damaged? This is probably a screwy idea, so let the flaming begin.

[Dick Boneske]

It certainly would help slow the burning of the engine paint. We won't know if it will insulate well enough until someone tries it.

[Jerry H.]

Although I've never asked him, I've heard that Scott Tieman has coated (I'm assuming it was a ceramic coating) some heads and then painted them to stop the paint from burning off the exhaust ports.

[RamAirIV28]

not a ceramic coating but a thermal barrier coating. its been discussed before. coat the inside of the cross over and the exuaste runners.

mostly to stop overheating issues but as a side benefit it has been noted that it essentially stops paint burn and in some cases just causes discoloration.

it does increase exuast temps, but you would also coat the inner walls of your manifolds too.

works pretty well on the aluminum exuaste manifolds used in early 60's sd aplications too