- Joined
- Nov 20, 2004
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- 20,443
From memory (on holiday so can't check/verify) there are at least seven different thread/thread forms on my Mk 3
Unf
Unc
Plus a few Unified (UN Special?, UN-20? etc.) 'fine' threads.
Whitworth
Bsf
Bsc (British standard cycle)
B.A.
Metric. (at least two other locations as well as the obvious spark plug)
Also BSP Parallel (fuel taps).
M.E. (Amal carb top cable adjusters).
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