Originally Posted by D_JEEPER
I would worry about the windings on the motors and the degradation of the insulation of the copper.
It'll be completely disassembled first.
1: I just don't want to do everything with a toothbrush and tiny wirebrush
2: I don't want to destroy the paint, just remove the dirt, etc.
Edit: I don't know if they are intended to be used when they are done, or just to be displayed. I read that to properly dry out an electric motor is to bake it at 250* for 20 hours. I don't know if that's true. car starters work after being submerged. Why not train motors?