By Blaster
Date 05-14-2011 15:15
Edited 05-14-2011 15:20
If the part doesn't have to hold against much of a load, like say from a clutch activation arm, JB Weld may be the easiest answer.
I fixed a non-structural area of a broken center case on a bike engine around the gear oil drain plug with it back in the 80s and it held fine with no leaks.