- Local time
- 1:44 PM
- Jul 8, 2020
- Reaction score
- Elkhorn, NE
FWIW--my flowkooler pump leaked out the weep hole in less than a year.
But, since you seem to have a repeat issue, how's the alignment between the water pump pulley and crank pulley? Needs to have less than 1/16" or .0625" alignment difference between groove centers.
Also, make absolutely sure the vanes/ rotating parts aren't contacting the inside of the pump housing at all...some pumps need a slightly thicker gasket to avoid any internal rubbing. Beyond that, if your belts are the proper tension, you could very well just be having a run of bad luck with junk pumps.. try a different brand.
When I removed the 3rd waterpump this am, I noticed this 'grooving' where the impeller looks like it's contacted the front block housing (whatever that's called) **see pic attached. I figured this was from when the first new water pump impeller came loose from the shaft on the inside. Is this anything I should be concerned about. All the pumps have spun freely by hand prior to firing up the engine so I don't think the other impellers were touching this inner wall. Opinions? I have ordered a FlowKooler pump that will be here tomorrow. I plan on pouring some waterpump seal antileak fluid on it during assembly. Thanks to all for your suggestions. I believe the fan pulley and crank pulley are both straight and true, but will keep an eye on them.