Ed K. modified my stock oil cooler which I had retrieved from a
wreck. He cut off the stock tanks which included the thermostat and
replaced them with the tanks  you see. It no longer matters which way
the oil flows through the cooler.     While he was at it, he cleaned the
core which was found to be full of debris.  Finally he pressured tested
the unit.  I have placed it in front of the firewall.  Air
will be ducted from the right nostril.  For those who are interested, Ed
can build a NEW oil cooler using cores that are identical to the stock
Mazda. He can shorten up the cooler a bit and make it wider  as well,
which should make it  easier to fit under the cowl.  Jerry

That seems to be a pretty good place for an oil cooler. That is where
Chuck Dunlap mounted his. Use a smooth interior surface duct
to feed air to a wedge shaped diffuser on top of the oil cooler.
Chuck used rolled up sheet aluminum.

Paul Lamar

Probably not a big deal (much structural margin), but that mounting method
imparts bending loads (buckling?) on members that are already heavily
loaded in compression.   Welding anything to the tube at mid span seems
like it would add a discontinuity which would make it more likely to fail.
Especially since the mounts are essentially cantalevered from near
mid-span.


Matt-

Good point Matt. Also you might set up a vibration mode in the tube that
might lead to fatique at the joints.

Paul Lamar

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