Exhaust Manifold Paint

my68barracuda

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When I installed the Dual Dutra's on the slant in the 83 D150 back around 2010 I had them powder coated by Indy Powder coat. They say they used a high temperature material suitable for exhaust manifolds. However it did not take long for rust to begin showing through and of course IPC does not warranty coatings on exhaust manifolds.

A couple of years later I had the engine out and re painted the manifolds and down pipes with VHT aluminum colored aerosol spray paint. The color was a dull aluminum and although it did hold up on the exhaust manifolds in about a year it did begin to flake off the down pipes.

May of 2021 I had the engine out of the D150 to replace the clutch and also swapped in a different cam. At that time I cleaned up-stripped the exhaust manifolds and down pipes and painted them with Rustoleum High Heat Ultra aluminum. That paint dried to a very shiny silver color. The truck was driven last May to November of 2021 and from April to late July of 2022 and this paint is holding up great.
Just though I would pass this on.

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RustyRatRod

I was born on a Monday. Not last Monday.
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When I installed the Dual Dutra's on the slant in the 83 D150 back around 2010 I had them powder coated by Indy Powder coat. They say they used a high temperature material suitable for exhaust manifolds. However it did not take long for rust to begin showing through and of course IPC does not warranty coatings on exhaust manifolds.

A couple of years later I had the engine out and re painted the manifolds and down pipes with VHT aluminum colored aerosol spray paint. The color was a dull aluminum and although it did hold up on the exhaust manifolds in about a year it did begin to flake off the down pipes.

May of 2021 I had the engine out of the D150 to replace the clutch and also swapped in a different cam. At that time I cleaned up-stripped the exhaust manifolds and down pipes and painted them with Rustoleum High Heat Ultra aluminum. That paint dried to a very shiny silver color. The truck was driven last May to November of 2021 and from April to late July of 2022 and this paint is holding up great.
Just though I would pass this on.

View attachment 1715961538

View attachment 1715961539
That's great, John. Thanks for the tip. Now, allow me to give you one. Rather than those plain bolts and washers you're using, you should switch to everything stainless. If not, the rust stains from those bolts will migrate to your painted manifolds and down pipes and stain them too and eventually they will rust as well.
 

Demonracer

71 Demon 00 Ram 16 Chrysler 300S 05 Caravan
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I'm with RRR, but I'd use stainless studs with stainless washers & brass nuts. After many heat cycles, the brass nuts will still come off & if not the threads will be wiped out so you can just replace the nuts, if needed.
 

GMP440

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When I installed the Dual Dutra's on the slant in the 83 D150 back around 2010 I had them powder coated by Indy Powder coat. They say they used a high temperature material suitable for exhaust manifolds. However it did not take long for rust to begin showing through and of course IPC does not warranty coatings on exhaust manifolds.

A couple of years later I had the engine out and re painted the manifolds and down pipes with VHT aluminum colored aerosol spray paint. The color was a dull aluminum and although it did hold up on the exhaust manifolds in about a year it did begin to flake off the down pipes.

May of 2021 I had the engine out of the D150 to replace the clutch and also swapped in a different cam. At that time I cleaned up-stripped the exhaust manifolds and down pipes and painted them with Rustoleum High Heat Ultra aluminum. That paint dried to a very shiny silver color. The truck was driven last May to November of 2021 and from April to late July of 2022 and this paint is holding up great.
Just though I would pass this on.

View attachment 1715961538

View attachment 1715961539

I used a product called Slip Plate Graphite lubricant. Sandblast the manifolds, spray a few coats of Slip Plate on, let for 24 hours and buff the paint with a cotton terry cloth. Works very well. Stays on, does not burnoff or flake off. Far superior than the Cast Blast paints I used in the past. I did my exhaust manifolds 3 years ago and they still look great.
 

GMP440

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I used a product called Slip Plate Graphite lubricant. Sandblast the manifolds, spray a few coats of Slip Plate on, let for 24 hours and buff the paint with a cotton terry cloth. Works very well. Stays on, does not burnoff or flake off. Far superior than the Cast Blast paints I used in the past. I did my exhaust manifolds 3 years ago and they still look great.

Manifolds with Slip Plate
Slip plate manifold..jpg
 

volaredon

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I wouldn't have thought of that, wouldn't think slip plate would take the heat for long.
 
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