I just re-worked two water pumps on Scott 7.5 hp Bail-a-matics,
using Honda impellers and modifying the liner. I defeated the
bailer pump on both units.
Both pumps expel some water around the top of the pump
where the driveshaft goes through, but otherwise seem to pump
water well…….. at least in my test bucket.
Perhaps I’ll worry about the leakage less thinking about your 16 hp with
the water cooled exhaust.
My 7.5’s have a baffle plate that slides in the grooves in the middle
of the housing to separate the exhaust from the pump somewhat.
Does the 16 hp not have that?
Groove shown in my photo, but the baffle plate is not installed yet.
Prepare to be boarded!