From my research the complete assembled engine with the
bellhousing, sheet metal, water pump, thermostat housing and
outlet, the harmonic damper and spark plugs were painted. The
spark plug porceline was masked off with a cardboard tube but
not the steel shell. After it was delivered painted to the
production line the accessories were added such as the starter,
generator, carb and spark arrester, breather tube, fan,
distributor, etc. So these items and their fasteners would not
have been painted the dark gray that the engine was.
Denny Graham
Sandwich, IL