I was thinking again. Sorry John Slade.

It looks like it might be possible to drive a water pump directly
off the E-shaft as shown in this picture of Racing Beats
1000 HP turbo three rotor.

This will solve a couple of problems. One; the plumbing of the
current pump castings is a bit awkward for rads as the inlet
to the pump faces towards the back of the engine. A 180 pipe bend
will solve this problem of course but it offends my desire to
make things simple.

If we drive the pump off the e-shaft the inlet to the pump will
then face forward making the water pump plumbing simpler and
more straight forward. It will also eliminate the need to belt
drive the pump and fab a  mounting bracket for the pump.

We can use the new pump housing casting and do a new cartridge
as the current impeller in the Mazda stock cartridge would rotate in
the wrong direction. A new cast iron impeller is rather easy
for me to make.

What do you think?

I am just in the thinking stage on this and it is well down the road
so don't hold your breath.


Paul Lamar

Paul, you will still have to build an adapter to mount the pump, and
where/how will you drive the alternator?
Royce

From the pulley behind the pump. The pump will be free floating
on the shaft. Not like the Racing Beat set up.

Paul Lamar

   Looked into this about a year ago. I have the room for a shaft mounted
water pump.  However the ones I was looking at were heavy and bulky. Also
would of needed an adapter.  My plan A right now is a meziere mechanical
remote. It's overkill,  but can adjust my flow with pulley size. Have to
rework the alternator and water pump belts anyway. Just couldn't see hanging
a 10 +year old water pump on a new install. This is lighter, cost effective,
and easier to get.  I had the same problem as everyone elese with the water
pump hanging out of the cowl.

Isn't Bob Darrah doing the shaft mounted water pump?

Barny
MGDQ 20bt

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