[Phil Brown]

I just had to fix one like that last month,The cap had a section broken out and missing between the drain pipe and the little plug in the back but with real good looking babbitt.
I took a piece of tubing for the new drain pipe and left a small part of it long to take the place or the old plug on the back side.
Fired up the Tig machine and brazed it in place. The Tig and brazing really helps to keep the heat to a minimum and protect the babbitt but go slow, weld....let it cool....weld..let it cool
If the babbitt is good (and worth saving) it sounds like it can be saved