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Old 03-14-2011, 01:57 PM   #6
Steve Tinker
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Join Date: Dec 2008
Location: Queensland, Australia
Posts: 1,522
There was talk a while ago about steering clear of the metal bladed water pumps.
If I remember correctly, its possible that if the pump bearings collapse it allows the metal blades to drop & wear through the alloy crankcase wall - you can guess the outcome of that.
My pump which was 10 years and 48,000 miles old when I removed it had no damage to the pump vanes and visually looked the same dimensions as the new pump. But costing only a couple of hundred dollars, I strongly believe that this type of preventative maintenance is a no brainer, considering the damage (not to mention the considerable inconvenience) of a failed water pump....
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