manzano Posted April 29, 2008 Report Share Posted April 29, 2008 Hi, Be great if anybody could help - I have the opportunity to acquire B40GB engine no. 4640 with different frame number, I can't make head nor tail of which year this machine would be etc on the bsa owners website list can anyone help? Thanks Manzi Quote Link to comment Share on other sites More sharing options...
big john Posted April 29, 2008 Report Share Posted April 29, 2008 I think all the B40 "GB" motors were 1967 model/year. Big John Quote Link to comment Share on other sites More sharing options...
charlie prescott Posted April 30, 2008 Report Share Posted April 30, 2008 Hi Guy's Hi Yes I think Big "J" is right. The "F" engine was 1965-66 and the "G" from 66-7 this is the engine with the oil fed from the end of the crank. The "B" signifies it was one of the engines built for the British army,there were others that had different letters IE "D" for Danish army. The G"B" engine also has wide ratio gears so should make it fine for trials without modification. You can also fit a Victor ally barrel if shortened slightly. Hope this helps. Regards Charlie. PS Good luck to all you boys (and Girls) in the two Scottish trials. and to first timer OTF. Quote Link to comment Share on other sites More sharing options...
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