> One of the problems with the 13b water pump (cut down or not) is that
     > the intake and outflow from the pump do not head in a 'helpful'
     > directions to route coolant hoses if the radiator is mounted
    beneath the
     > engine.  I am not very satisfied with the solution I came up with the
     > first time around, so I am pondering some rework while I
    reinstall the
     > engine next weekend.
     >
     > First thought is to weld a 180 bend onto the pump as shown in the
     > figure.  This makes it relatively straight forward to add some
    hose + a
     > 90 degree bend to get to one side of the radiator.  But it does
    nothing
     > to help getting from the goofy 45-degree pump port to the other
    side of
     > the radiator.
     >
     > Anyone have a better idea how best to lay this out?
     >
     > Mark Supinski
     >
     > Here is what I have come up with but it requires a two pass rad.
     >
     > Paul Lamar ...No rotor no motor.

    What is a two pass rad?

    Doc Custer
    Retired Software Engineer and sometime Audiologist

    OK that is when the water goes down one side and comes
    back the other. Sometimes called a Sciroco type.
    Makes plumbing a lot easier.
    --
    Paul Lamar ...No rotor no motor.


The stock radiator Tracy is currently flying is a 2-pass.  I had to have
a couple of mods applied to it for my use - I milled off the radiator
cap and welded it shut.  Also, for whatever reason the rad came with one
port 1.5" and the other 2.0".  I had the large one milled off and a 1.5
put in it's place.  But it's a nice rad, just tricky to mount.  If you
come by, Doc that would be an area you could give me some suggestions,
since this is the last remaining design area I have no workable plan for.

Mark Supinski 719-651-3236

I see what happened Mark. The neck is on the extreme left instead
of in the middle. It helps if it is the middle. Not fatal however.


-- 
Paul Lamar ...No rotor no motor.

To all,
           For what it is worth, I have a 13B (86-88). I bought a front
cover for a RX-8, sawed the water pump housing
           off, die ground it till it looked as though it was made as a
separate unit, and then mounted it to the front housing.
           I only had to add a little block of steel (weld) to the front
housing and drill/tap. This was the only bolt that didn't
           line up. If anyone wants to try this, then at that time you
will see where the bolt in question is located. You might
           want to buy a gasket for a RX8 and see if it will line up
properly. I did as this was cheaper.

FRANK R CLEMENTI


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