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Old 12-19-2003, 08:07 PM
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Exhaust manifold coatings

Does anyone know what is the best substance to use for exhaust manifold coating? I am looking for something that will not rust, flake or peel off. Terry

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Old 12-19-2003, 09:25 PM
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If you don't want to ever have to worry about it, you should send them out to get them coated.

If you want to try to do it yourself, you need to have them blasted and then cleaned with lacquer thinner (absolutely clean), and I have had good results using either Eastwoods (brush or roll on) or (I can't think of the brand right now) it was in a spray can, and after I sprayed the headers/manifold I stuck them in the oven and baked them for the required cure time (don't use the oven in your house, it will run you out of the house , I found out the hard way and ended up buying an old oven for the shop). If I think of the brand name I will let you know.

I have also heard that BBQ and grille paint works pretty well, I have never tried that personally.
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Old 12-19-2003, 09:33 PM
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If you have access to Hemmings motor news, there is a place in Pennsylvania--Bill Hirsch products that has coating that has a higher temp. coating than the coatings at Eastwood. I used Eastwood on my street rod and so far so good. The Hirsch coating worked better on my headers than anything else I tried.
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Old 12-19-2003, 09:36 PM
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painting exhaust

I have used both VHT, and BBQ grill paint on headers. It works ok on an engine if you are going to tear down and rebuild like in stock car racing, but Ive never had either paint last for more than a season of racing. Best bet is to use a ceramic coating, as it will help keep the heat in the header and aid in their performance in that manner. My recommendation is to stay with black, as it also helps in heat retention where white radiates the heat more, causing more heat in the engine compartment
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