Roger Robertson wrote:

Sounds like Leon has been giving this aircraft installation thing a lot
of thought.
His price on engines sounds good too as long as the exchange rate holds
up and shipping isn't out of sight.
I like Leon's ideas of two water radiators along-side the engine too. I
do think to get maximum cooling/thrust advantage you do have to put the
cooling air in ducts all the way to the exit into the airstream.  Back
of the envelope calculations look like about 5 pounds of additional
thrust at altitude in cruise.  How about using the whole top of the
cowling for an intercooler.  (More on that later after we get one flying
here)
In the last two KITPLANE mag's article on an EJ22 installation they did
the same thing with two radiators   The engine mount  article is well
done with good pictures and some innovative ideas on removable radiator
support arms.
Roger Robertson -Amarillo, TX

The idea in aircraft is to keep it simple and reliable. One rad is better than two.
A streamlined out let is all you really need if you dump rad air into the
cowl. Due to the large volume inside the cowl air velocity is low hence lower drag
until it gets near the outlet. (Drag ~ V squared) It also helps to have air circulation 
around the engine to cool various and sundry items.

You don't need to do a whole new cowl. Just add a snorkel intake to the
bottom front part of the cowl.

Paul Lamar
 
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