Metrix water pump any good?
08-24-2018, 10:23 AM
#16
Nordschleife Master
... I am not a fan of plastic impellers as long as the metal ones are well retained. I understand the 928 people who do not want to mill the block with a walked impeller but I am more concerned about the plastic ones breaking as long as I have demonstrated the "booger weld" on the impeller shaft, which should mean no milling or seizing up.You can do that weld with a scrap of flux core wire and a couple car batteries.
08-24-2018, 07:23 PM
#18
Addict
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BMW forums discuss the virtues and faults of metal, plastic, composite to death. The problem with some of the metal pumps is the bearings are made for plastic and the extra weight. At least that's what i read. We replaced the factory metal pump with a composite in my daughter's E46 at 88K a few months ago. Everything looked fine, but I didn't want to risk it. Plus, she (the one in my avatar who is now 15) was doing the labor while i "watched". Now she brags to the boys using words thet never heard before like idler pulley, and serpentine belt.
08-24-2018, 10:17 PM
#19
Drifting
For about $40 more than Zims you can get a factory rebuilt water pump kit that includes the gasket, all new studs, thermostat and seal, and blockoff plate for NA's complete with a 2 year factory warranty. And it's an actual Porsche water pump, not some Chinese one. But before I knew Porsche offered these kits, I was a loyal Zims customer and very happy with their parts and service.
I’ve been on a Zims-supplied bugdet pump for a while now. Pretty happy with it
08-24-2018, 11:36 PM
#20
