Hi Paul,



I'm finally doing the radiator install into my Bush Caddy.  The radiator is
15" x 24" two row, double pass (720 cu/in) it will be installed under the
engine cowling see attached photo's.  I would like your opinion on the
opening size for the air intake.  I have your book, and if I'm correct,
according to what I have read in the book, I need 3" of opening for this
size radiator.  The attached photo's show it with a 3 1/2" opening, will
that be OK or should I reduce it to 3"?  Thoughts?



Many Thanks,

Bob Forbes

N164WF

If it comes to a sharp edge at the end of the rad inside the diffuser it will work great.

3.5 inches is fine for a bush plane.

Paul Lamar







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