It's a BSA 68mm bottom bracket shell. 36x24 would be Italian threading (36mm, 24tpi) which is why it won't fit. You need a new BB.
Well crap. Thanks!
Anyone want an Italian threaded 7700bb?
@boredom started
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It's a BSA 68mm bottom bracket shell. 36x24 would be Italian threading (36mm, 24tpi) which is why it won't fit. You need a new BB.