Water pump....questions

[txrocco@sbcglobal.net (ATS - Patrick Bureau)]

There you go that solves the problem of the thermostat and variance in
tempertaure, you set the water at 212'F/110'C and you let that puppy rip...

Thank youf or the info... YOu know Ill be getting one.. lol now to save for
that too...

ATS - Patrick Bureau - txrocco@sbcglobal.net


=>-----Original Message-----
=>From: scirocco-l-admin@scirocco.org
=>[mailto:scirocco-l-admin@scirocco.org]On Behalf Of Scott F. Williams
=>Sent: Friday, February 28, 2003 11:26 AM
=>To: ATS - Patrick Bureau; _Scirocco Mailing List
=>Subject: RE: Water pump....questions
=>
=>
=>Patrick asked:
=>> Working on my 2L project and thinking...could it be possible
=>> to not install the pulley driven Water pump and install a type
=>> of electrical water pump instead and gain some HP?
=>
=>How ironic... Patrick, did you read last week's posts about my plans to do
=>exactly what you're talking about? I've purchased an electrical water pump
=>as well as an electrical power steering pump. Keep in mind that instead of
=>directly sapping the output from your engine via a pulley and belt, the
=>electrical components do it via the alternator. So, the gains are
=>not to be
=>had simply by way of the electrical conversion.
=>
=>Rather, they come from the fact that the necessary output of
=>those pumps may
=>not be matched well to their operation speed. This is because the ratio of
=>pump speed to engine rpm is fixed.
=>
=>For example: Suppose you are idling at the staging lanes at the
=>drag strip.
=>Your engine is fully warmed up, but not overly hot at all. You raise the
=>revs to 4500rpms and prepare to launch. Your water pump works like mad to
=>push the coolant through the block. Since engine is not actually
=>in need of
=>all that cooling yet, the thermostat restricts the flow. In this
=>case, then,
=>you've got a loss of efficiency. The water pump works far harder than it
=>needs to.
=>
=>A more ideal situation would be to eliminate the thermostat completely and
=>simply run the electric water pump faster or slower based on a temperature
=>sensor. Thus, the engine's output climbs due to the increased
=>efficiency -but, not *always*. Does this make more sense? For more info,
=>here is the link to the system that I purchased:
=><http://www.daviescraig.com.au/newproduct.html>
=>
=>Later,
=>
=>P.S. Keep in mind that the typical electric water pumps that you find from
=>Edelbrock, Moroso, etc., are really intended for dragrace cars with very
=>limited operation times. They are *not* designed to replace OEM
=>water pumps
=>and will fail under extended use. We don't want your challenge to
=>me during
=>the Cincy caravan to be thwarted because of an expired water pump. :^)
=>--
=>Scott F. Williams
=>NJ Scirocco nut
=>'99 Subaru Impreza 2.5 RS
=>Mazda 323 GTX turbo "assaulted" vehicle
=>Golf GTI 16v "rollycar"
=>ClubVAC: "Roads found. Drivers wanted."
=>
=>
=>
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