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There's nothing such as paint that's red on one side and green on the other; that's two layers of paint.
Yes, that makes sense. Yet if you examined a chip of this red paint and see the reverse side of the chip as metallic green - and then see how thin this paint flake is, I can't see how there are two coats. It's impossibly thin. If it is, then the whole pump wasn't painted green, only parts of it. Some red paint flakes off with green. Other red paint flakes off and it's just red. Weird.
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The metallic green is the colour used on '60 225s in the bigger Dodge-Plymouth cars. Interesting mystery how that paint wound up on your oil pump.
Agreed. I can't imagine someone taking a green-painted pump like this off a 60 full size D-P, stripping it, and then repainting it red. But I guess it's definitely possible. My machinist informed me that my 60 170
has been rebuilt before (contrary to what I believed was the case) so who knows the story behind this engine. Or what the real mileage actually is. Or if it's the car's original engine. That was kinda like someone popping my balloon.
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No reason not to if you find it to be internally good. If you can swap on a later cover plate (with the two kidney-shaped protrusions) it will improve pump efficiency.
Thanks. I might be able to swap one off a Melling parts pump I have. If that will work.