Quote:
Originally Posted by tonythetiger
rather then start start a new post...Opinions, y'all
I am replacing the water pumps on 2 of my cars, 2001 and 2002 S with 100K and 82K respectively. since I'm replacing the front mounts, this is a while I'm in there thing. Going to the 160 degree thermostat and replacing the serpentine belt. Anything else?
Most important, is it critical to use the composite impeller opposed to aluminum? The URO pump says aluminum impeller and I have been happy with their parts. I get if the WP implodes, composite does less damage, but I want to hear about this.
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The metal impeller can shave the block and increase the tolerance between the impeller and the block, reducing cooling flow.