Ian Beadle wrote:

Hi Paul
What is the latest on position and size for the radiators? I am
thinking of fitting the radiator under the cowl with the air entering
above and out the bottom. A square oil cooler in one cheek and ram air
to the plenum chamber in the other. Ideas all pinched from Don Dunbar.
Any comments? I have'nt heard from recently from the guys who are
repairing my old RV6A, they purchased an empenage locally. So the back
end is done. Happy flying, Ian Beadle

Something like this seems to be the best cooling approach.
This is a P-port but it will work with an RX8 engine. The runners shown
here are a bit long for a 2.85:1 gear box.

BTW makes sure you get the six port version of the RX8 engine. That is
the manual  transmission version. Should be worth at least 30 HP more
than the four port  automatic transmission version.

I think the all time best approach would be a p-port RX8 engine.
Best of both worlds. Side exhaust with a peripheral intake. In that case
the four port RX8 engine would work as the side intake ports are not
used.

We are building a 3rd gen p-port engine as we speak with a low cost
sheet metal  slide throttle. Estimated HP is about 250 or more for take
off and BSFC of  around .47 for cruise. We will find out as we plan to
dyno it on the  Mazdatrix dyno in the near future.

George has the pattern done for the bell housing/motor mount so he
should be able to ship you one shortly.

Paul Lamar

Matt Prather wrote:

You must be telepathic Paul..  I woke up this morning wondering about
future supplies of 13b vs Renesis (having read John Slades' comments
about what Bruce Turentine had said), and whether P-Port on a Renesis
would work.  Glad to hear it.  I think by the time I get to buying an engine
for my E-Racer that's going to be the way to go.

Regards,

Matt-

 
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