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Date:         Tue, 19 Feb 2008 01:25:46 -0500
Reply-To:     Allan Streib <streib@CS.INDIANA.EDU>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Allan Streib <streib@CS.INDIANA.EDU>
Subject:      Re: Electric Water Pump
Comments: To: Kenneth Lewis <kdlewis@NORTHSTATE.NET>
In-Reply-To:  <11444.162.58.82.135.1203346953.squirrel@webmail.northstate.net>
              (Kenneth Lewis's message of "Mon\, 18 Feb 2008 10\:02\:33 -0500")
Content-Type: text/plain; charset=us-ascii

Kenneth Lewis <kdlewis@NORTHSTATE.NET> writes:

> I agree with your assumptions as they apply to FWD cars that > require paltry amounts of coolant and only have to push it a short > distance. But what about Vanagons which hold gallons and have round > trips measured in yards? I would think that would greatly increase > the load on the water pump. I have compared a new pump to an old > one. The wear on the impeller blades is very evident . So an > electric driven water pump might prove a healthy gain in FE (fuel > economy).

A worn impeller is caused by corrosion and/or cavitation. Neglecting to change the coolant as specified is often a contributing factor, or it could be poor quality materials in the manufacturing process.

Allan -- 1991 Vanagon GL


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