Author Topic: Help with engine number  (Read 298 times)

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Dave1

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Help with engine number
« on: 18 March, 2017, 17:50:56 »
Hello, I am in the process of becoming a member of the BSAOC. I have recently purchased a 1971 BSA A65 Lightning, which apparently has a Devimead 750 big bore kit.

I am having trouble dating the engine. The engine code is A65D 42*9. * is to not fully reveal the whole engine number. My frame number tells me its a June 1971 bike.

Thanks
Dave

JulianS

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Re: Help with engine number
« Reply #1 on: 18 March, 2017, 18:25:06 »
A65D decodes as a Lightning Rocket and 46*9 indicates its from the 1965 season. Probably exported.

You can see for yourself on the BSAOC website under "machine dating"

Dave1

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Re: Help with engine number
« Reply #2 on: 18 March, 2017, 21:46:27 »
Yes I looked at the machine dating page, how did you suppose I deciphered the frame number?...I was not quite sure on the engine, I narrowed it down to 1964-65 but could do no better, was looking for confirmation. Thanks