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
 
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