Hello,
Just putting my bottom end back together (1953 plunger A10) but just found that that the new big end bolts are shorter than the originals and leave me no room to do the nuts up -the new nuts are also shallower and sit too deep inside the big end cap (knackered now, no meat to grip the socket
) The old nuts are about 3mm thicker and have a shoulder of about 2.7 mm turned on them which means the hex head sat a little higher. The new nuts and bolts were from SRM (tried putting a washer under the new nuts but there was no thread left for the nut to "lock" onto.
Are there two different lengths? - old bolts 67.8 mm long, new 65 mm.
Regards
Nigel