Just seen these whilst browsing the think auto web site...

http://www.thinkauto.com/waterpumps.htm

Seems like a good idea, but with a average motor life of only 2000 hours, assuming 1hour usage every day, thats about a 5 year life span, wouldn't want it failing on me whilst out driving.

Has anyone ever fitted an electric water pump and done away with the standard mechanical impeller?

If so, notice any gains? Would assume its similar to doing away with the PAS pump?