And then it went Bang

[Ian Williams]

Stud diagnosis will wait until the bottom half of the engine is out.
Before that I want to prepare the new crankcase and block.  In the meantime finding proper high strength BSF studs is on the task list

Charles

If all else fails and you can not get the material, I have used long 5/16 unf or unc grade 8 bolt, cut thread off, trim to the length I require and put a bsf thread on. You could I suppose even convert to metric, throws hands up in horror!