Packard Forum Index » Pre-War (1899-1942)

The rebuilder's goal

1. Impeller clearance from .010 to .030.
2. Upgraded 6 blade impeller
3. Turned the pump body so the surface is smooth while maintaining the .010 to ,030 clearance

Hopefully this solves the issue.

Got the WP back from the Flying Dutchman. Total rebuild was reasonable at $245. Now I can't even see the gap between the impeller and WP body. The rebuilder says it's between .010 and .015. Also the WP body was turned to reduce the effect of the pitting from corrosion on water turbulence. It may be a while before I get it install as I got a RV trip coming up. However, looks like nice work with the upgrade John Deere impeller.

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Looks excellent and the cost was certainly modest. I hope it solves your problems!

Yes, I was very pleased with the cost. Wade, the owner, appears to know his water pumps. Just with the naked eye, you can see the new gap is a very close fit and hopefully if everyone's theory is right, improves the WP's performance. Looking back at the previous pictures of the WP, the impeller gap looks humongous!

I finally got the rebuilt water pump and water jacket installed. I like the gasket sold by Olsen Gaskets better then the thin paper one sold by Max Merritt. I ran the car for 1/2 hour in the garage and never got above three quarter on the temp gauge. I took the car for a quick spin yesterday and never got above 1/2 gauge even on the steep 700' climb to my house.

However the weather is cool in Oregon, so I'll have to wait until the warmer weather arrives to see if the problem has been solved.

BTW, I still can't see coolant flowing in the radiator opening.