[DeTomaso] Weiand Water Pump

[MikeLDrew at aol.com]

In a message dated 5/11/13 10 22 22, demongusta at me.com writes:


> To All:
> Recently we discussed water pumps, mechanical and electric. Well, I have a 
> Weiland (#8209 - Action-Plus) and I didn't hear anyone mention this pump. 
> Is there a reason? Any opinions? All the competition versions are for small 
> block Chevys.
> 

>>>One problem with it (from what I recall) is that unlike all other 351C 
water pumps, Weiand failed to incorporate the internal water passage for the 
engine warmup circuit.   All Ford engines utilize a bypass system, either 
external (on all other contemporary Ford V8s) or internal (only on the 
Cleveland series).   In the Cleveland, when the thermostat is closed, water flows 
through the bypass, and when it's opened, the bypass is partially (but not 
fully) blocked off and most water flows through the radiator.   But 
significantly, water is flowing all the time.

With the Weiand pump, water remains completely stagnant, and the water pump 
just churns away and cavitates, until the thermostat opens.   This can lead 
to uneven heating of the engine, as hot spots can develop, etc.

For this reason I would choose any of the other 351C pumps available, 
favoring either the Edelbrock or the Flowkooler.

Mike