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On Jan 8, 12:34*pm, " wrote:
What IS needed are aluminum head-castings having twice as much fin-
area as what's presently available.
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We need a CASTING because we need the DRAFT that goes with it.

Come up with a set of fins that leaves a clean impression in our
casting media and we'll automatically get a set of fins that does a
dandy job of coupling heat to air being forced down through, over,
passed an' whatever THROUGH those fins.

Now all we gotta do is come up with ENOUGH of those fins... as
determined by their area... to deal with the anticipated amount of
HEAT and we're on the road to Rio. Or where-ever.

-R.S.Hoover