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Old 03-11-2013, 03:31 PM
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Painting Manifolds with POR 15

I am getting ready to paint my exhaust manifolds. I had them blasted last week. I was planning to use POR15 manifold paint.

I was wondering how everyone delt with the manifold bolts. I was thinkig of hitting them with a wire brush and them painting the heads.

Is it so thick that that would cause issues with the the socket wrench?

I didnt want to paint them after they were installed for fear that it would glue the bolt to the manifold.

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Old 03-12-2013, 06:28 AM
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When using a high heat paint it is a good idea to heat the part up before you paint. Then apply the paint when the part is just warm to the touch.
As far as the bolt heads go, paint them after they are on. You will only crack the paint if you do it before you mount the manifold. You don't have to worry about "gluing" the bolts to the manifold. If you need to remove them at any time , you will not have any problem breaking a paint seal, it's not epoxy.
More than anything........you want the parts as clean and grease free as possible. I would have the manifolds bead blasted and the heads of the bolts will be fine with just wire wheeling.
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Old 03-12-2013, 08:30 AM
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Would the POR coating last longer than the high temp spray paint?
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Old 03-13-2013, 03:57 AM
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To be very honest..........I have never seen ANY so called high heat paint not flake or peel after the parts were painted. Usually after having the motor come up to temp and then driven for some miles, the paint does start to come off.
I have never used Por15 hi heat paint so I can't say for sure what will happen. I did work for a company that sold high heat paint and had to deal with many customers who called to ***** that the paint flaked off.
That's why I am only telling you the best way to prepare the parts but I won't tell you the paint will last.
I always get headers or cast iron manifolds ceramic coated like Jet-Hot. Yea I know it costs more but you never have to worry again about it coming off.
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Old 03-13-2013, 08:03 AM
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por paint

i really don't know of the max temp on por.. u need to ck that one out so u don't waste time and money.. but i do know and have used a hi temp header paint.. i think it was 1500 and it held up very well.. i used autozone with prim, paint, clear..
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Old 03-13-2013, 11:20 AM
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high temp spraypaint....laughs.
no matter what, that crap burns off!
i ordered a jar of ceramic brush on paint from speedwaymotors.com.
warmed the car up a bit,
brushed it on.
then ran the car for about an hour.... looked and stayed beautiful
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Old 03-13-2013, 11:49 AM
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Interesting on the brushed on high temp stuff from Speedway. I have an old hotrod with lakes type pipes on it, and i have prepped and sprayed VHT on them several times, but at certain areas they tend to flake the paint. I havent blasted them, but I have sanded them down, degreased, cleaned a second time, heated them up lightly, then put the paint on with light coats, drying to tack, then hitting a second coat. Would be interested in the brush on, does it "self level" ie. the brush strokes blend easily for a decent look?
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Old 03-13-2013, 02:07 PM
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Quote:
Originally Posted by BigMo View Post
Interesting on the brushed on high temp stuff from Speedway. I have an old hotrod with lakes type pipes on it, and i have prepped and sprayed VHT on them several times, but at certain areas they tend to flake the paint. I havent blasted them, but I have sanded them down, degreased, cleaned a second time, heated them up lightly, then put the paint on with light coats, drying to tack, then hitting a second coat. Would be interested in the brush on, does it "self level" ie. the brush strokes blend easily for a decent look?
lays down perfect, as long as you apply even coats
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Old 03-14-2013, 03:02 PM
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rattle can

Quote:
Originally Posted by h0trod View Post
high temp spraypaint....laughs.
no matter what, that crap burns off!
i ordered a jar of ceramic brush on paint from speedwaymotors.com.
warmed the car up a bit,
brushed it on.
then ran the car for about an hour.... looked and stayed beautiful
i spray'd my headers a yr ago and they are still nice..
not as good as a hi temp coating, but i figured i get it a shot.
i don't see a problems.. i wasn't going to paint them on the car so i sprayed and let them sit for a week to dry...
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