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M. Murphy's Avatar
 
Join Date: Sep 2010
Posts: 366
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Waterpump Question

About 49k miles on the waterpump in my 98 base. I am looking at replacing it. I am wondering what type of impeller is recommended metal or composite? I have read that the metal impeller has a tendancy to grind the block when the WP bearings go, permanenly damaging the block. Just because of that I'm inclined to use a composite impeller pump. Any thoughts?
Old 07-08-2018, 05:14 PM
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Ronpor
 
Join Date: Apr 2018
Location: Melbourne, Australia
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W/pump

Highly recommended that you use the composite impeller. If the block is ever damaged by a metal impeller, no replacement w/pump will ever function efficiently.
Old 07-08-2018, 05:37 PM
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Thanks, that is exactly how I see the issue. Good to get another opinion.
Old 07-08-2018, 06:55 PM
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