Snip
AN> Looking good Don. If that does not look like your average Mustang II
AN> it is because Don built a female mold and laid up a carbon fiber roof with
AN> gull wing doors. Is that a stock smog pump I see on the right
AN> side of the engine for the vacuum instruments Don?

AN> Paul Lamar

Paul that is the water pump on the right, The pump is a self contained
Toyota pump that delivers about 20% more than the stock N.B..
It is also much lighter and puts the pump down low allowing maw to put
a header tank high on the firewall. The original pump would have had
no head and any loss of water would of had it sucking air.

--
Best regards,
 ddunbar

        Don,

         Very interesting! Would you care to share more photos and info on
  which Toyota pump you are using and also how you are plumbing the inlet
  and outlet to the 13B. The fact that a lower pump position would be desirable
  for A/C installatiions has been discussed before.

        Kelly Troyer

I think this is a major break through. In the event of a cooling system
problem it should give more time to get the airplane back on the ground.

IMHO one of the reasons the Toyota pump is more efficient is because
there is a straight shot into the impeller. In the Mazda pump the water
must make a sharp 90 turn both in and out.

I'll look into making a casting that will accept the stock Mazda cartridge
to cut the cost (and weight) of buying a Toyota water pump. Also a casting to
bolt to the Mazda block so some sort of hose fitting can be attached
for coolant in an out.

Here are some pictures Don sent of the Toyota pump.

Paul Lamar

Here is a rendering of the channels of the proposed water neck. 
Both the inlet and the outlet are brought out with 1 3/8 ID channels.
This casting could also incorporate a motor mount.
Another advantage to Don's idea is no need to cut down the stock
Mazda water pump to get it under a low cowl. the water neck can
be as  low as the end housing.

Comments anyone?

Paul Lamar
 
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