I just bought a bsa 1971 with a b50ss engine. These were made in 71-73. It came out of a barn and is in poor condition. Are the bolt and nut sizes in whitworth? Do I need to buy a set...

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bmiller

I just bought a bsa 1971 with a b50ss engine. These were made in 71-73. It came out of a barn and is in poor condition.

Are the bolt and nut sizes in whitworth? Do I need to buy a set of whitworth tools? Can metrics work?

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