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Old Apr 5, 2017 | 12:44 AM
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So I'm restoring the engine compartment of my 63 and although you guys have already helped me with the correct black, I was wondering if there was a specific primer I should use. I only ask because it's going on fiberglass and not metal.

Any thoughts ?

Thank you
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Old Apr 5, 2017 | 07:01 AM
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Red oxide primer was used at the factory in the engine compartment and firewall. Cant remember if that was followed with gray primer like the body was.
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Old Apr 5, 2017 | 08:10 AM
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My 66 did seem to have fair coverage with the red oxide primer but I don't recall seeing much body color when I stripped it. I doubt they masked it when spraying primer and color so it probably got some overspray around the hood opening that was later covered with the blackout.

Last edited by DansYellow66; Apr 5, 2017 at 08:11 AM.
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Old Apr 5, 2017 | 04:38 PM
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Originally Posted by phil2302
Red oxide primer was used at the factory in the engine compartment and firewall. Cant remember if that was followed with gray primer like the body was.
If I recall correctly, the gray primer was used as a final "guide coat" to help in sanding and removing any imperfections prior to painting.

Larry
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Old Apr 5, 2017 | 06:46 PM
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Originally Posted by my63vette
So I'm restoring the engine compartment of my 63 and although you guys have already helped me with the correct black, I was wondering if there was a specific primer I should use. I only ask because it's going on fiberglass and not metal.

Any thoughts ?

Thank you
Are you worried about the primer being just like what GM used....or all you want is a a primer that will work????

Do you have an air compressor??? and paint guns???


What black paint are you planning on using and how do you plan on applying it???

DUB
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Old Apr 5, 2017 | 07:21 PM
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I can't believe GM used a gray primer guide coat and block sanded their engine compartments. No way.
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Old Apr 5, 2017 | 07:29 PM
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Originally Posted by GTOguy
I can't believe GM used a gray primer guide coat and block sanded their engine compartments. No way.
They used it on the body................I don't think anyone would recommend it in the engine bay. Least of all Chevrolet.

Guess I need to watch my clarity in future posts. I'll try......

Larry
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Old Apr 6, 2017 | 01:28 PM
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Originally Posted by Powershift
If I recall correctly, the gray primer was used as a final "guide coat" to help in sanding and removing any imperfections prior to painting.

Larry
I was referring to this post, which follows an engine compartment post. It leads one to believe that a guide coat was used in the engine compartment as it was blocked and prepped for paint. As I said, I don't think that's the real story.
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Old Apr 6, 2017 | 01:51 PM
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The two color primers were used on exterior body panels as a depth signal when machine sanding. It wasn't necessary on any other areas.

Absolutely nothing was sanded in the engine compartment. Primer and black over unsanded fiberglass. Quite a bit of body color is also seen on the inner fender skirts under the black.
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Old Apr 6, 2017 | 05:58 PM
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Originally Posted by my63vette
So I'm restoring the engine compartment of my 63 and although you guys have already helped me with the correct black, I was wondering if there was a specific primer I should use. I only ask because it's going on fiberglass and not metal.

Any thoughts ?

Thank you
What brand of paint and color are you using on the firewall and hood.
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