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Date:         Tue, 19 Feb 2008 10:15:25 -0500
Reply-To:     Kenneth Lewis <kdlewis@NORTHSTATE.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Kenneth Lewis <kdlewis@NORTHSTATE.NET>
Subject:      Re: Electric Water Pump
Comments: To: Allan Streib <streib@cs.indiana.edu>
In-Reply-To:  <m13arp1mz9.fsf@cs.indiana.edu>
Content-Type: text/plain;charset=iso-8859-1

Allan, It's a mystery to me how a fluid could erode the metal impeller. I stay on top of coolant changes so I don't think it was that. I have the distinct impression that failure rates did drop significantly when I switched from Italian to German made water pumps. Ken Lewis http://neksiwel.20m.com/

<snip> 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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