A7 to A10

[South Oz Dave]

Single or twin carby? How do I determine the difference?  Also, is it better to go for the early 'spogot barrel', and  if so, what number is it?, or should I just shelve the head for a curio?

[muskrat]

G'day Dave,
                the long stroke barrels won't fit on the short stroke cases, there are quite a few differences. Put that head in the for sale section.
 What is the engine # on the cases and have you measured the stroke to make sure of which crank is in there? Short stroke A7 is 72.6mm and A10 is 84mm, the long stroke is 82mm but I don't know if it will go in the later cases, others here will know.
 Still hunting for those pushrods, will dig deeper today.
Cheers

[kiwipom]

hi guys, have a look at this for mix-n-match
www.customcycledevelopments.com/BSA_bobber.html

cheers, Bob