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  #1  
Old 08-31-2010, 09:03 AM
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High Temp Paint/Ceramic Coating

I'm looking to paint or coat two exhaust manifolds and two turbo elbows -- all cast iron. I've looked into sending them out for ceramic coating or jet hot coating, and that is just too expensive. I am looking for some kind of heat-retaining coating that I can put on myself or an idea for an inexpensive process I can obtain elsewhere.Any suggestions?

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Old 08-31-2010, 02:59 PM
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I recently used straight forward though not very cheap high temperature paint on my exhaust manifold...
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Old 09-09-2010, 04:19 PM
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Heat resistant coatings that actually work are never cheap.

Do you know the operational temperatures of the parts you are trying to coat?

John
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Old 09-09-2010, 04:21 PM
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Quote:
Originally Posted by jmk View Post
Heat resistant coatings that actually work are never cheap.

Do you know the operational temperatures of the parts you are trying to coat?

John
Well, presumably they would be less than 1800 degrees Fahrenheit, because that's where cast iron starts to glow and move. I have seen somewhat expensive spray cans of hihgh temp paint good to 1300 F costing about 20.00 per can.

This is something I'll be doing myself, soon.
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Old 09-10-2010, 10:11 AM
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Quote:
Originally Posted by jmk View Post
Heat resistant coatings that actually work are never cheap.

Do you know the operational temperatures of the parts you are trying to coat?

John
I don't know the actual temps, no. But I hope they don't get quite this high:Hot exhaust parts :)
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I never go far without a little Big Star

1994 E500 199/Gray 82k
84 300D (Salty) Orient Red/Palomino 141k
88 300CE (Ersatzhammer) 904/Java 163k -- Turbo Technics twin turbo kit, AMG Gen I body kit, Sportline steering box and steering wheel, Sportline/Eibach /Bilstein Sport/500E suspension, Quaife LSD in 210 mm diff case, Silver Arrow brakes.
88 300CE Brabus 3.6 199 on Black 44k
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Old 09-10-2010, 05:54 PM
jmk jmk is offline
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Yes, that is what I was afraid of. If you want it to hold up, you'll need to consider the ceramic or jet hot coating. I am unfamiliar with the jet hot process, but a client of my used to work at a company that make ceramic coated cast iron pipe. This stuff was tough.

At those temperatures, you will need a coating that is 100% inorganic. Appling a coating like that is tough. I know they took the pipes to 850F to apply the ceramic coating to the pipes.

Cool sometimes costs a lot of money.
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  #7  
Old 09-14-2010, 09:14 AM
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Well, I've shopped around a bit and it seems I can get a local place to put on a thermal barrier ceramic coating inside and out the two manifold pieces and the two elbows for about $300. That's a coating that is supposed to be stable up to 2000 degrees. It only comes in a satin black, which is acceptable to me. I'll try and do before and after pics.

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I never go far without a little Big Star

1994 E500 199/Gray 82k
84 300D (Salty) Orient Red/Palomino 141k
88 300CE (Ersatzhammer) 904/Java 163k -- Turbo Technics twin turbo kit, AMG Gen I body kit, Sportline steering box and steering wheel, Sportline/Eibach /Bilstein Sport/500E suspension, Quaife LSD in 210 mm diff case, Silver Arrow brakes.
88 300CE Brabus 3.6 199 on Black 44k
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