I think the fins on the inside are a very good idea.
As I mentioned, building a thermodynamics test rig to test this is
not all that hard.

BTW Instead of feeding cool water into the front of
the block I think it should be fed into the center housing and allowed
to divide front and back. Mazda did this with the four rotor.
As it is now the rear rotor tends to run hotter than the front rotor.

Paul Lamar

I was thinking the same thing. Exit the water from the intake port side of
the center housing. the rear housing would not have to be modified. The front
housing would need one or two holes ground in the divider where the water
pump now attaches and a block off plate bolted on instead of the water pump.
A Dodge Caravan water pump may be a good substitute (looks similar to the one
in the Racing Beat picture). The inlet is straight to the center of the
impeller, outlet has a relatively gentle 90 degree bend with O-ring seals at
the end of the tube that goes to the engine block (Wiggens couplings could
easily be welded to inlet and outlet). The whole pump is a separate unit (the
back half of the pump is not part of the engine block).
Ed. pebvjs@aol.com

We are of course talking about the scaled down Mazda are we not? :-)
Its not worth doing on the stock Mazda IMHO. Not that big of a problem.

Paul Lamar


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