Re: painting engine ???
I've had very good results,with Sunfire two part urethane from the automotive division of Sherwin Williams.
I painted a few aluminum boats with it,that stayed in the water for a few weeks at a time with no pitting or bubbles.
It's expensive,but is a beautiful finish,and is bullet proof.It's used on fleet trucks,and airplanes.
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All this,just for a boat ride
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