> I've attached a copy pictures of the oil tank for the LOM M332A
engine on my
 > RV-3.
 > There are 18 fin on the side of the tank, which are 1/16" thick
by 1/2" tall

 by 7 3/8" long.  There is a 1/4" space between each fin.

 > There are vertical fins on the inside of the oil tank.

Hi all:

        Look at the VW ( and Porsche ) cases: they have external and
internal fins for stiffness and cooling...

Regards,
James

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