[DeTomaso] Water pumps

[Jack Donahue]

Any pro - cons re: electric pumps? Hard to fit, hard to wire? Seems there would be more chatter on THE LIST if they were popular. Started thinking about it after reading the controversy regarding the  "bleeding" process. Seems you could do an "insta-bleed" by flipping a switch without the car running. Or "insta-purge" of the system. Food for thought.

On Apr 12, 2013, at 9:01 PM, Will Kooiman wrote:

> FWIW, the flowkooler is the same pump as the Milodon.  It is very light.
> I believe it is die cast instead of sand cast.
> 
> I also have an Edelbrock.  It is beefier and slightly heavier.
> 
> Some have the provision for the warm up passage.  This is the bypass port
> under the thermostat.  I do not believe the Weiand has this port. The
> Milodon, Flowkooler, and Edelbrock do.
> 
> Some people believe you should have the backing plate on the impeller.  In
> theory it should help, but in practice I don't know that it matters.
> --
> Will
> 
> 
> 
> 
> 
> On 4/12/13 11:44 PM, "JDeRyke at aol.com" <JDeRyke at aol.com> wrote:
> 
>> In a message dated 4/12/13 8:00:46 PM, demongusta at me.com writes:
>> 
>>> Just curious as to why people have the ones they do. I could use some
>>> names and why you got them. High output?
>>> 
>> Interesting question. I bought a Weiand 8209 aluminum mechanical pump in
>> the '90s only for its 50% weight loss from a 16-lb stock iron pump and
>> reasonable price, and its still doing a good job of moving coolant 20+
>> yrs later. 
>> Later, I chopped away unused bosses and other things not needed on a
>> Pantera 
>> and got its weight down to 6 lbs with no effect on its reliability. I'm
>> in 
>> the middle of adapting a new mechanical pump to our 351-C for other
>> reasons. 
>> More in the POCA Newsletter when I begin testing it on the road.
>> 
>> Most pro engine builders will tell you that stock-type mechanical pumps
>> move more water at street rpms than high volume pumps or any electric
>> pumps, so 
>> unless you're actively competing or open tracking every weekend, that
>> $300 
>> super-pump may actually not work as well as a $49.95 cheapy in traffic.
>> Lots 
>> of possibilities for improvement in several areas, though. FWIW- J Deryke
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