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Old 02-13-2023, 12:29 AM
kpbrown31 kpbrown31 is offline
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Default Auto body paint on engine

Anyone using an auto body paint on the engine with luck? I’ve heard of people doing it and swearing by it for longevity over the rattle can high temp engine paint you buy.

I always figured it would peal or melt off, but apparently it doesn’t.

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Old 02-13-2023, 12:28 PM
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I've been painting clean re-built engines with automotive single stage paint for 20 years with no flaking problems. First I seal them with epoxy primer.
If you are spraying over old paint or oily surface, maybe not so good results.

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Old 02-13-2023, 10:09 PM
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Quote:
Originally Posted by 400 4spd. View Post
I've been painting clean re-built engines with automotive single stage paint for 20 years with no flaking problems. First I seal them with epoxy primer.
If you are spraying over old paint or oily surface, maybe not so good results.
Good to know. I’ve just heard of it being done before and wanted to give it a try but figured I’d see if anyone had experience first.

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Old 02-14-2023, 01:12 AM
JSuchma JSuchma is offline
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Quote:
Originally Posted by 400 4spd. View Post
I've been painting clean re-built engines with automotive single stage paint for 20 years with no flaking problems. First I seal them with epoxy primer.
If you are spraying over old paint or oily surface, maybe not so good results.
Same as mentioned above. The high gloss will make your engine look like a piece of candy! You will never go back to rattle cans. Don't forget to add hardner in with the paint.

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Old 02-14-2023, 11:55 AM
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I’ve used bc/cc on items like manifold covers etc to dress up late model car engine compartments (to match exterior colors) with great results but these items don’t see a lot of heat. What about using bc/cc on engine blocks? I understand enamels and single stage holdup well but short buying a matching single stage does anyone know if bc/cc would hold up on the block?

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Old 02-14-2023, 01:53 PM
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Nytrainer, I once got in a restored 67 GTO to do some fixes on, and the owner supplied (DBC) base coat to do some engine bolt head touch ups. The car only had a few hundred miles on it since the engine was painted, but heat had yellowed the clear coat so bad everywhere that the touch up was way off.
I use activated Omni single stage over epoxy in most cases.
The last picture is a 68 400. The discoloration at the ports is to be expected with any engine paint.
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Old 02-14-2023, 01:58 PM
tjs72lemans tjs72lemans is offline
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I painted my small block in my 55 about 15 years ago with bc/cc and see no peeling, yellowing or anything negative. Looks as good as the day I shot it. It is a graphite grey metallic. It's painted from intake to oil pan.

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Old 02-14-2023, 02:23 PM
Murf Murf is online now
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Quote:
Originally Posted by 400 4spd. View Post
Nytrainer, I once got in a restored 67 GTO to do some fixes on, and the owner supplied (DBC) base coat to do some engine bolt head touch ups. The car only had a few hundred miles on it since the engine was painted, but heat had yellowed the clear coat so bad everywhere that the touch up was way off.
I use activated Omni single stage over epoxy in most cases.
The last picture is a 68 400. The discoloration at the ports is to be expected with any engine paint.
Hey 4004spd, would you have the Omni formula for that light blue metallic? That looks great! I’d like to try it on my next engine.

Do you have any cleaning / pre tips you’d share?

Thanks man!
Murf

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Old 02-14-2023, 04:34 PM
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Quote:
Originally Posted by Murf View Post
Hey 4004spd, would you have the Omni formula for that light blue metallic? That looks great! I’d like to try it on my next engine.

Do you have any cleaning / pre tips you’d share?

Thanks man!
Murf



PM an email address and I'll send you the formula. As far as prep on a vatted assembled block, we use wax and grease remover and a scotch brite to scrub it.

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Old 02-14-2023, 06:49 PM
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Quote:
Originally Posted by 400 4spd. View Post
PM an email address and I'll send you the formula. As far as prep on a vatted assembled block, we use wax and grease remover and a scotch brite to scrub it.
Thanks a lot! DM heading your way.

Murf

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Old 02-21-2023, 07:31 PM
Murf Murf is online now
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Quote:
Originally Posted by 400 4spd. View Post
PM an email address and I'll send you the formula. As far as prep on a vatted assembled block, we use wax and grease remover and a scotch brite to scrub it.
Not being pushy 400 but did you get my PM? I’m excited to try this. That color looks just right to me!

Thanks
Murf

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Old 02-22-2023, 01:01 AM
Goatracer1 Goatracer1 is offline
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I used a Lincoln light blue metallic paint instead of Pontiac engine paint with excellent results.

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Old 02-22-2023, 02:14 AM
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Almost any quality automobile paint is better than the every day spray can stuff. Granted, you can get specialty paints made, they are usually made with auto paint type materials.

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Old 03-13-2023, 11:41 PM
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Default prep before painting an engine

I have experience with painting at least 6 engines over the last 2 years.
We have great results with automotive body paint.
Use Brakeclean to clean & degrease the surface before primer/paint.
We buy the 5 gallon cans and have refillable pressurized sprayers to apply the Brakeclean. Entire engine is sprayed at least 2 times. Brakeclean will drop the temp of the metal as it evaporates so there is a little wait time before applying paint.

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