The series 4 had cooling problems as the water traveled through

the

engine too fast, there is a vast difference in output hp and the

series

6

of mine runs cool even in high temps over high speed hours of

running.

The aluminum water pumps on series 4 and 5 are an after market

supply

and cost around $90 Aus.
Regards Don

Sure is a bargain on those Aluminum aftermarket pumps.  Only US

source I

saw

wanted $500.00 for an aluminum pump cartridge.  I wouldn't mind

having

one

of those series 4 jobs.  Anyone else interested?

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com

I'll bring one back  in my check on :-)

Paul Lamar

As he says, the FD series (93+ usa cars, 13Brew tt) all have the alum
pump bodies/cartridges. I remember the 91 I rebuilt had that black steel
pump. You may be able to find these 93+ much cheaper on the aftermarket
rebuilt (try Napa), or from removed or discarded FD engines. Mazda
replaces the pump on their factory FD rebuilds, I know for a fact.
(Intimate knowledge of wife's car engine!).

Tracy, the 20B has what kind of pump? Never mind who would supply a
replacement (Mazda racing?)! The volume must be higher, and what else is
different? Anyone know?
Marc Wiese

As I recall the 93 13B and later pumps won't fit the 92 13B and earlier.
For one thing they use a poly V belt and rotate opposite as I recall.

I am interested in a 92 and earlier 13B aluminum cartridge. Is that what
we are talking about here?

Paul Lamar
 
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