Jeff Spitzer wrote:

At 10:31 AM 2/21/99 -0800, you wrote:

The top motor mount tubes may have to peirce the exit
ducts.

The gif is largely self explanatary.

Comments and questions?

You stated in your earlier post that having the hot cooler air flowing over
the engine will raise the heat load to the radiator.  That assumes that
there is another source of cool air to blow over the engine if you don't
use the radiator air.  So, where on your sketch is the inlet and outlet for
the engine bay cooling. 

I left it off. You need air for the engine intake as well. I left that
off
too. Just common sense. I will put a hole under the prop. How big 
do you want it :-)

 If there is no secondary airflow then the bay will
run even hotter than if the rad exhaust flowed over it and things will
start to melt.   BTW, the secondary airflow will also cause cooling drag if
not properly done.  Herein lies an argument against the P51 style cooling
system.  Dump the radiator air over the engine to carry away exhaust heat,
etc. and avoid the need for two air ducting systems :)

Jeff Spitzer

Since the exhaust pipes run white hot you don't want them heating 
the back of the rads by radiation.

PL

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