Mark, I did say I thought the housing was cracked before. But, after taking the motor out to inspect the condition of the impeller and shaft seal, I now think it is just the shaft seal leaking. Also, when the pump is off, the concrete pad stays completely dry (no leaking). It only leaks when running. The water was coming from underneath the pump so I assumed it was the housing but now I understand that water that makes it past the shaft seal then drains through a drain channel on the bottom of the flange. So, now I am thinking I may just take the easy way out and install a go kit, impeller and new high efficiency motor.
Is the model of pump (wet end) that I have, good enough for me to reap the benefits of a new high efficiency 2-speed motor?
I have read several times that the impeller is changed out for a 1 HP impeller when installing the 2-speed motor. Can you expand on that?