Hoeveel schroefdraad lengte zou je normaalgesproken in de krukas hebben
Stukje op Pelican, wat ik even zou lezen, als ik jou was
Don't try an insert for this particular subject, not likely to work.
Chase the threads, it may be possible the crank is threaded deeper than the length of the bolt, maybe by as much as .25-.375". Try a longer bolt, of the same grade of hardness of coarse.
I would put forth the effort to drop (partial) the engine down some in order to get an absolute straight shot at the buggered thread to start a tap (thread chasing tap, not cutting tap) straight.
