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Epoxy primer over painted parts.

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Old 07-02-2011, 09:41 PM
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LynnBob Mustang
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Default Epoxy primer over painted parts.

I'm not going to strip the floor or cabin interior of our '65 down to bare metal. The metal is fine and I just want to seal what is there and go over it with some chassis black paint and under coat.

I know ideally it should be down to bare metal, but I'm not going that route for inside the car, the out side will be handled by the paint shop.

What epoxy primer should I go with for this application?

Also, I'm putting on new quarters and they have the black E coat on them.

Can these be just scuffed down, shot with epoxy, chassis black paint and then under coated for sound deadening and rust protection before being installed?

Lynn

Last edited by LynnBob Mustang; 07-02-2011 at 09:43 PM.
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Old 07-03-2011, 01:58 AM
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hightower2011
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I actually have been wondering the same thing. I know epoxy binds better to bare metal, but what if there's a solid base like previous primer or something of the like?
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Old 07-03-2011, 04:58 AM
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LynnBob Mustang
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over 100 views, Anyone?
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Old 07-03-2011, 06:58 AM
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NoReins
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Yes, you can scuff your e-coated parts with 80 grit and then exopy prime. Be sure to scuff all the shine away or the primer will not adhere. So it's more than just a quick job. It is not necessary to take them to bare metal. However, just make sure you use a wax and grease remover to clean the parts before shooting the primer. Failing to properly prep can ruin a paint job.

Also, we have used a couple differernt brands of epoxy primer for different items on the car. By far the best is Southern Polyurethanes (SPI). http://www.southernpolyurethanes.com/ Barry is a great guy and literally answers any time of the day if you have questions. Definitely a company that really backs their products and service.

Hope this helps!
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Old 07-03-2011, 07:09 AM
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NoReins
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I just re read your question and then my answer and I don't think I answered it correctly. Your floor plans do not need epoxy primer if you are going to be using chassis saver and undercoat. Especially if the pans are rusty, I would recommend the chassis saver and undercoat only.

You can do the work on the inside of the quarters before installing them just of course make sure it's dry because all that stuff is flameable, as I'm sure you know. Also don't get it on the areas where you will be welding.
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Old 07-03-2011, 11:52 AM
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JMD
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As a rule of thumb, you can epoxy prime just about anything if the surface is properly sanded/scuffed. There are exceptions though, uncatalyzed enamel, (like rustoleum, etc), asphalt base undercoating, etc. If uncatalyzed enamel is an issue it will wrinkle up before the epoxy dries.

Please reconsider any use of undercoating. I hate that crap, it sucks assembling a NEW car where that nasty **** gets all over everything... Consider bed liner for sound insulation. Your hands aren't supposed to get nasty dirty putting your car back together.
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