crazykart
Crazy member
Personally I would either leave it natural, or polish it up a bit. Too much paint just makes the eyes go crazy. You could polish the whole engine top to bottom to an almost mirror shine, but that would be a crap ton of work. Maybe degrease and then just polish up some.small pieces for a pop.
It's near impossible to polish an entire air cooled engine; if you want it to pop, paint the jug black (or red or any strong base colour) then polish just the edges of the fins (or even just remove the paint); the hard colour will make the edges pop...