Tig weld vs J-B Weld...LOL

YY1 said
I have a problem with Magnum water pumps poor "O" ring design.

The O ring is not really standard (flatted) and is held in by the just barely enough to seal force of the sheet metal tube held at one point of contact by a bolt on the other end.

Who TF designed that and called it good?

Next one I get I'll tap the casting and install a fitting as it should have been done on the original design.

Problem is, as with the OP, water pumps are kind of hit and miss quality these days, and tapping will surely void a warranty.

You had trouble with the magnum leaking? So far I've owned "a few" and even though I'm up to three now on HEATER CORE FAILURES that tube hasn't leaked a drop LOL

1...Bought/ drove this 2wd Dakota for a short time. Of course the heater core was completely bad.

2...The "White Whale III" It started "fogging" and "smelling." I don't drive it much, and it doesn't leak much. The solution for this fall and winter has been to yank the gasket off the pressure cap This is a '01 2500 2wd 5.9 Magnum

3...The junk Dakota I bought started smelling a "little" and just barely "fogging" a little. So.........I ripped the gasket off the pressure cap

Thing is, I may get rid of both of them in the near future, so I don't want to put that time and money into 'em. Plus, "It's a hell of a job" on either of them. Remove the seats, drop the column, remove the ENTIRE dash, and THEN pull the heater. The Dakota has AC so that's an additional annoyance. The girdle fittings in where the suction accumulator mounts is VERY tight and VERY hard on these old fingers.........