Water pump longevity ????

[mikefocke]

On another forum Marc reports 172k on his first with 130K+ on his second pump.

Some discussion on if a metal impeller is a good idea. If the bearing goes and it starts scraping the cavity it can create real serious problems. The plastic impeller is softer than the cavity. And once the cavity is made larger, any pump is less effective.

A thermostat opens and allows flow when the temps are reached. After that, the cooling is limited by the capacity and cleanliness of the radiators and the working or not of the fans. No big need for a low temp thermostat in most situations. Because once it gets hot, the flow is there no matter which thermostat you use.

[Boxtaboy]

Originally Posted by mikefocke

On another forum Marc reports 172k on his first with 130K+ on his second pump.

I like MarcW's water pump change schedule! I think he's still on his original clutch at 300K miles too. Oh, and my 2nd water pump is still holding up after 8 years (original one lasted 8 years), so I hope the AGE theory doesn't hold water.