[Mgs] MGB factory V8 propshaft
Eric J Russell
ejrussell at mebtel.net
Mon Mar 27 18:39:51 MDT 2017
> Anyone aware of an oddity with the gearbox flange bolts and nuts? The
> people that removed my engine lost the nuts.
> The Leyland Parts Catalogue shows the nuts as GHF223, confirmed by those
> suppliers that specifically list the V8 propshaft as well as the
> 4-cylinder which are different. This is a 3/8" UNF Nyloc - but they don't
> fit any of the bolts on my gearbox, which look like the correct 'specials'
> (22B483) that lock against the flange when undoing and tightening. They
> go on about 1/4 turn, then jam, as if the nut is slightly too small for
> the bolt, or the threads are significantly different.
Perhaps you have 'center lock' nuts. They look like standard nuts but have a
punch mark in the center of the hex. This distorts the threads to make them
'locking'. These are different from Nylocks or Stiff Nuts.
Alternatively, you may have prevailing torque bolts.
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