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Is there a large difference between having ceramic coating on outside versus inside header?

Old Sep 4, 2001 | 07:29 PM
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Default Is there a large difference between having ceramic coating on outside versus inside header?

The headers I'm going to get are the Hedman 68301-6's with the ceramic coating. (Yes...I know I've been stubborn about those Dynomax's.) The coating is on the outside of the header. Will this make a large difference or is it something trivial?

Thanks,
Matt
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Old Sep 4, 2001 | 08:28 PM
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Default Re: Is there a large difference between having ceramic coating on outside versus inside header?

Well, I don't have headers, but I'll provide what I remember reading here about coated headers and get this ttt for a response from someone who has first-hand experience.

1. Coated headers "flow" better because they heat up internally quicker and stay hotter internally.

2. They keep the engine compartment cooler than non-coated.

3. They look better longer than non-coated.

4. They may wear out more quickly than non-coated because of the extra internal heat. :(

Hope I got some of that right.
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Old Sep 4, 2001 | 08:54 PM
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Default Re: Is there a large difference between having ceramic coating on outside versus inside header?

Any header that has been Jet Hot coated is coated inside and out.
I think HPC coatings only do the outside.

I would prefer and recommend some that are done inside and out, but if Hedman wants to warrenty some that are only outside coated, I wouldn't worry too much.

It would be MUCH better than no coating at all !!
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