I tore the water pump apart on Bailer #2 this morning.
The two outboards were purchased in different years,
and different States, but they both had the same
Lord J-7598 replacement impellers.
Evidently, they were about the only choice even
years ago.

Also interesting is that the impeller wouldn’t touch the
liner on the slack side of rotation. I realize the impeller
is old and has taken “set”, but it makes me think there
wasn’t a whole lot of “vane tension” on the liners
using the Lord impellers. I wonder if the original Scott
impellers were better? They certainly designed different
than the Lord replacement impellers.

I’m awaiting a Sierra impeller that’s has a slightly larger
OD than the Honda one, and see if I can get if to work
without adding a band in the liner to reduce the cavity diameter.
Time will tell.

Ken wrote:

what impellor did you get there?

I can’t find the details on the impeller I used, but between the two that
I fixed up, I believe I used NOS impellers on one, and used a Honda impeller
on the other cooling water pump, and blanked off the bailer pump.
Search on site to see if you can figure out what Honda impeller, and
if all else fails, Facebook’s Scott Atwater site should have the info.