[rheltzel]

It's interesting that on the air-cooled engine, the exhaust ports exit from the block deck ala Cadillac's design, thereby avoiding running the hot exhaust gases through the engine, which no doubt, would have created too much heat load for an air-cooled engine to cope with.

Too bad Henry didn't pursue this approach on the production flathead...it would have eliminated the one major shortcoming in an otherwise brilliant design.