Engine Paint

[DentalDart]

The paint on this engine is flaking off a little. What’s the best way to strip the paint off and repaint it?

Thanks.

 

[DartManPlum340]

The paint on this engine is flaking off a little. What’s the best way to strip the paint off and repaint it?

Thanks.

View attachment 1716492250

I don't know, but good to hear from you, Doc! Merry Christmas!

 

[DentalDart]

I don't know, but good to hear from you, Doc! Merry Christmas!

Thanks! Merry Christmas to you as well!

I’ve been around but haven’t done much car work as the office is nuts at the end of the year and I have 5 projects at home going on.

Car goes to paint in January so I’m going to have to **** or get off the pot with things on it.

70 and sunny here for Christmas

 

[1MeanA]

I can't think of a good way without totally stripping it down. You could try scraping the flaking areas off and wiping them down with lacquer thinner or even brushing on paint stripper first. It would be tedious and messy at best.

 

[DentalDart]

I can't think of a good way without totally stripping it down. You could try scraping the flaking areas off and wiping them down with lacquer thinner or even brushing on paint stripper first. It would be tedious and messy at best.

Take it to a bare engine? Or you just mean pull the heads and accessories off?

 

[1MeanA]

Take it to a bare engine? Or you just mean pull the heads and accessories off?

It depends on how you are going to remove the paint and on what quality of paint job you want. If its going to be a chemical bath or bead blast then totally disassembled and bare. I doubt you would want to go to that length. If you are going to try a chemical stripper or lacquer thinner then just remove the manifolds, water pump, intake, etc.. I suppose it depends on what kind of paint job you want in the end and how bad the flaking/adhesion is. Perhaps try chemical stripper or lacquer thinner in a test area and see how easy the paint comes off. Just my $0.02.

 

[DentalDart]

It depends on how you are going to remove the paint and on what quality of paint job you want. If its going to be a chemical bath or bead blast then totally disassembled and bare. I doubt you would want to go to that length. If you are going to try a chemical stripper or lacquer thinner then just remove the manifolds, water pump, intake, etc.. I suppose it depends on what kind of paint job you want in the end and how bad the flaking/adhesion is. Perhaps try chemical stripper or lacquer thinner in a test area and see how easy the paint comes off. Just my $0.02.

I just don’t want it to flake off. It’s an engine that’s never been run, and going in a car that’s getting repainted and redone.

 

[1MeanA]

If its flaking before its even run then I suspect adhesion issues likely due to poor prep. There is no real way of guaranteeing good adhesion without totally stripping the paint, cleaning and repainting. Like I mentioned above, I'd try a chemical stripper (not on aluminum) or lacquer thinner in a test area and see how easy the paint comes off and what you are in for.

 

[pauly]

Great question. I repainted my 340 that was red with black hi temp paint. It cracked-a lot! Original paint was said to be Mopar performance engine paint I’m going to try to wire wheel/wire brush mine to get off what I can. I wiped the whole thing down with thinner but wondering if adhesion promoter would have helped?

 

[413]

Start with an air nozzle. The flaking paint is not adhered well and it will blow off. Hot pressure washer is good also.

Then start in with the chemicals and strippers.

 

[Bob Jasinski]

The paint on this engine is flaking off a little. What’s the best way to strip the paint off and repaint it?

Thank

Several ways to approach this, depending on what you are willing to do, and what your goal is. If the paint is flaking, it wasn't prepped properly. Spray it with a good cleaner, let it soak, then use a good pressure washer and it will quickly remove the badly adhered paint. Painted areas that remain could probably be painted over, or use wire wheel and wipe down with acetone and/or pressure wash again to get it all off. I like VHT engine paints and recommend their primer as well. They also make a high temp engine clear that helps with appearance and durability. A more involved repaint would use spray gun 2 stage paint, but I have had very good luck with a well prepared block and VHT paints without the need, expense and hassle of cleaning paint guns.

 

[413]

Once you paint an engine with auto paint with hardener you will never use another rattle can. Does not need primer, to many coats are not good on an engine with the heat cycles. Adheres well and will not discolor with fuel, oil, or degreasers.

The quality and durability is unmatched with rattlecans.