Thanks.

Seems like a lot of that information is pretty focused on engines that are totally enclosed or close to it. I'd disagree that prop wash 'does nothing' for you, though. Forcing cool air over a hot thing tends to cool it, no? I always thought that's why we put our hot batteries in tubes with little fans or why we blew cordless leaf-blowers at our turbines before they came out with auto-cool features. If the engine were on the front of a Stik (or other plane sans cowl), cooling isn't a concern or consideration at all, so I'm pretty confident that air moving over the head will cool an air-cooled engine. My question is whether or not enough of the head looks exposed to accomplish that. Some people say the meat-n-potatoes of cooling are all at the top of the head--others say it's lower on the case. That stuff I really don't know...