"cavedweller" wrote in message
...
On Jan 8, 2:34 pm, " wrote:
All of that is out there, already available. But the truth is, it's
not needed; not in the immediate sense.

What IS needed are aluminum head-castings having twice as much fin-
area as what's presently available. This won't fit on a bug or bus so
there is no start-up money. Coming up with the cores should have been
done by the EAA -- about fifty years ago. The fact it wasn't is good
evidence that it won't.

Bob...don't Jabiru use heads machined from billet stock?

That was my recollection as well, although I can no longer find it on the
web.

Peter