Sleeve it with a ledge at the bottom.
Green loctite.
A lot of the time I would smear some all over the bore but you have to be quick in getting the sleeve installed.


If you can use a right angle drill or adapter with a short drill bit, drill both ends of the crack.
The drilling part is a peace of mind thing for the most part.
I sleeved many without the drilling and never had an issue. Reference the fist sized holes previously mentioned.
Yes, you will need to go larger on the bore due to distortion. It's one of those things you don't grasp until you see it.
Oh, yeah, don't even think about welding. Nice idea but the results will disappoint.