Originally posted by DanB:
Plastic + high RPM + high heat = disaster waiting to happen!
this isnt the main cause for them breaking. the main cause is the metal cone coming loose from the pump housing and rubbing on the impeller until it's worn down enough, or lodges in between it and the housing and cracks it to pieces. the black impeller also suffered a different death as you stated. just make sure you look to see if the cone is loose in the pump housing. if it's in tight then u can buy whatever kind of pump you want. if it's loose then you MUST buy the ford oe pump.
