[Skeezixx]

I bought a 31 Coupe abandoned project expressly for the rebuilt (in 1986) engine sitting on the stand with zero miles which I installed in my roadster.

I managed to put 511 miles on it when, on a recent tour, an old JB Weld crack repair failed revealing a 4" long crack in the outside water jacket.

I took it to a local industrial machine shop where they welded the crack but the weld wound up with tiny hairline cracks in it. I spread some J B Weld over the length of the weld but don't have a lot of faith in this. Should I also use some sort of engine block sealer.

Or am I looking for another block?

Any suggections?