RE: Cooling space
Greg....
For you and others, I scanned an image off original plan to helpt you better visualize the situation. This ought to help some, and let you get the feeling.
It is a middle 1960's racer, had a K&B .40 up front. As you may see it gets rather tight around the cooling fins. Nothing in the notes, nor on the plan as to suggested clearances. Makes it look as though the intended balsa block cowling was to fit tightly around the engine.
I am going to install a slot at the firewall to let air out. Nothing decided on inlet yet.
Wm.