Jerry Hey wrote:

I had to rebuild my oil pan so that the bottom angle matched the
radiator plenum.  The plenum and radiator are represented by the
particle board profile. The plenum opening is 5 inches and the rad is 3
inches thick.   It is 9.5" from the pan flange to the bottom of the
radiator.  Add another 3/4 inches for the louvers for a total of 10.25
inches.  This just fits the stock Tailwind cowl.  If you are lucky
enough to have an additional 2 inches which some aircraft like the
Murphy Super Rebel will have, then there is room for a fan, too.
Jerry

 
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