Water pump longevity ????

[CN58]

Posted a few days ago about installing a pump w/ a metal impeller. Live and learn, I guess.. Do more investigating before purchasing parts for these cars, especially something engine related.. Asking questions is never a bad idea.. Plenty of people way smarted than me out there.

Anyway, pulled the "brand new metal impeller pump" and installed a Pierburg w/ a composite impeller. Works great.. Getting to be an expert on pulling and installing these pumps.. Thanks again for the insight, feel better about things.. Pumps are cheap compared to engines..

As I post earlier I also installed a 71C (160F) stat when I did the first pump.. I agree with JFP in Pa after running the car with the new 71C stat vs. the old 83C stat.. The temp needle now sits just just a hair behind the 180 degree mark after running and letting sit for 25 minutes idling and some minor revving.. It never moved past that mark.. With the old stat the needle sat about 1/4" past the 180 degree mark and would creep up on warmer days.. As I said earlier the old factory pump looked perfect at 91K, so I'm sure the circulation was always there.. I never liked how warm it ran before.

This improvement, I feel, is all T-stat.. More driving to do, but at this point I would recommend the 71C stat.. Inexpensive and really pretty easy to do..

Thanks to all for info and sharing experiences.. Knowledge is power..