RE: Is this enough engine cooling?
john,
thanks for the response. maybe the pic is deceiving, but my muffler will exit directly in the middle, underside of the cowl, not off to the side like yours. if the exit hole has to be directly behind the head of the engine, that wouldn't leave much choice, as the firewall is in the way (see 1st pic). other than the muffler exit hole, I can't see how else to devise the best cooling setup. Like you said, cutting a hole for the head will not provide any benefit.