1962 Merc 450s Impeller

[TPINLA]

Have everything I need save 1 part, the impeller key (ordered 2 but they arent the correct ones)

Im wondering if I can find a steel dowel and cut it to fit if that would work.

Has anyone ever been here, worked with this? Interesting the the design of the water pump and
how the impeller rotates clockwise over the cavity to move water. I have to trust the engineering
of course but still one would think it would have been an in-line flow.

Would appreciate very much any input and thoughts on the pics.

The impeller looks correct in its "open-close" rotation and the keyhole looks as if a dowel pin would work.

I should add the "pin" that was there looks like a stainless screw that was cut to fit.

Best of all would be if anyone knows where to find the exact replacement. It may just belong to history now.

Appreciate all the good info Ive received so thanks in advance.

Reed

 

[emckelvy]

Re: 1962 Merc 450s Impeller

The part you're looking for is: "23733 - PIN, IMPELLER DRIVE" which supposedly is NLA from Mercury, but a Google search shows quite a few places which still have 'em in stock.

Failing that, maybe a stainless roll pin, cut to the correct length, would do the trick. Most any auto parts store should carry a selection of those.

Just be sure to test-fit before assembling, you neither want it too tight or too loose. Too loose is worse, it'll eventually work its way out of the groove in impeller, after that the impeller stops turning, then your motor gets real Toasty!

HTH & G'luck........ed

 

[TPINLA]

Re: 1962 Merc 450s Impeller

Ed

Thanks for the input. Went with the roll pin idea and with some careful presses on the grinding wheel it turned out better than I thought it could.

Reed