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Discussion Starter · #1 ·
I have a freshly built engine (less than 2 hours). In the past, I had oem exhaust manifolds. Now I have Hedman headers. The factory painted the headers and said the paint was temporary.

Lately, I noticed quite a bit of smoke that seems to come off the headers. There is no visible oil on the headers. Does header paint burning off make significantly visible smoke?


Thanks,

Steve
 

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Hates: Liver. Loves: Diesel
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Header paint is sacrificial unless it is a special coating (like ceramic). It is designed to keep them from rusting between when they are manufactured and when you install them. It will all burn off in a short period of time and the smoke will stop. There is currently no known paint technology that will withstand header heat... at least none that wouldn't cost 5 times the headers themselves.

Even ceramic-coated headers can smoke for a bit. The first few heat cycles are critical to cure the ceramic.
 
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