My drives are in need of repainting and i was thinking of having them powdercoated after I tear them apart to go through them. Is there any issues with the heat from this process warping anything?

I would paint them. Once powdercoating gets a chip, it turns to chit. It will get little bubbles under the PC and then start chipping and peeling all over.

Griff,

Do you know what paint Merc uses?

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No, but I believe it is just an enamel. If I was going to repaint mine, I would probably go with Imron.

I know a guy that uses a good epoxy primer and Dupont Centari Enamel..
I have seen power coating flake off as has been mentioned. If you can keep the coated stuff out of the water, it seems to hold up better..

Dick

thinking of painting mine this winter as well, Imron Paint... does this stuff need a clear coat ? Sometimes I leave the boat in the water for two weeks, any problems with that and the Imron, besides getting a little dirty/ skummy?

No paints are actually recommended for below water line use, but Imron holds up about the best. Imron is actually a line of paint. There is a version that use a basecoat/clear and a version that does not require a clear.