Thought I'd share my experience this weekend. After rebuilding the engine because of a bad water pump, the darn thing failed again on the first day I actually drove it anywhere after the rebuild. When I took the failed water pump out this weekend, the pulley would not rotate (and by the way, I only removed the belt, the throttle barrell assembly and the intake plenum 'w pipe'). I saw on www.specialtauto.com a picture showing how to tell if the pulley was pushed on far enough and sure enough it was out 3/4 of an inch. When I took the back of the pump off, I found that the impeller wheel had indeed been rubbing the back of the water pump case, and in fact there was quite a bit of damage to both the back and the impeller wheel too. This rubbing must have transferred the heat to the seal, and caused a failure. I figure I sped up the process by having the belt very tight, which caused the pulley and impeller to try to align, causing it to push into the backing. I think I'll let SpecialTAuto put on the pulley this time. Would have saved me this fun experience!! Dan in Cocoa (3932)