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#15219 - 09/09/06 2:18 am 1940s BSA Frame and Engine Numbers.  
Joined: Sep 2006
Posts: 36
CanadaBike Offline
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CanadaBike  Offline
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Posts: 36
Canada
Should the frame and Engine numbers on a 40's BSA M20 be the same or simply match to the model type and year?

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#15220 - 09/09/06 1:07 pm Re: 1940s BSA Frame and Engine Numbers.  
Joined: Apr 2002
Posts: 962
beezageezauk Offline
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beezageezauk  Offline
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Joined: Apr 2002
Posts: 962
North East England
BSA M20 engine and frame numbers for 1940 should not match unless there was an unusual coincidence when the bike was built. Even though the M20 engine and frame numbers started from WM20-101 for that year, the M21 and M23 models also used the same sequence of numbers for their frames but different numbers for their engines.
I suppose that the honest answer to your question is....possibly, but highly unlikely.
Beezageezauk.

#15221 - 09/10/06 3:27 am Re: 1940s BSA Frame and Engine Numbers.  
Joined: Sep 2006
Posts: 36
CanadaBike Offline
BritBike Forum member
CanadaBike  Offline
BritBike Forum member

Joined: Sep 2006
Posts: 36
Canada
Thanks so much for the info!! I have only been looking at this forum for a few days, but the willingness to share and help others is amazing.

Thanks and have a GREAT day!!

#15222 - 09/12/06 11:46 am Re: 1940s BSA Frame and Engine Numbers.  
Joined: Aug 2001
Posts: 1,099
jfligg Offline
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jfligg  Offline
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Joined: Aug 2001
Posts: 1,099
Lucan ON Canada
Hey CanadaBike Where are you in Canada. Jeff

#15223 - 09/13/06 3:35 am Re: 1940s BSA Frame and Engine Numbers.  
Joined: Sep 2006
Posts: 1
crashnburn Offline
One time posting
crashnburn  Offline
One time posting

Joined: Sep 2006
Posts: 1
western mass usa
Hi,
Just found the definitive engine frame number page.
http://www.bsaoc.demon.co.uk/intro.htm
Erase the "intro.htm" and hit return and your at a great home page too.

I am restoring my 1951 BSA Alloy Clipper 500 single, it's BB34A247 HC with the alloy barrel similar to gold stars with their iron barrels.

Given the above page I now know its a 1954 but no big surprise I have had it since it was 7 years old having bought it off the race track. Its been stripped of stock tank, seat, fenders, bars and lights and I want to get as much of the near original similar looking parts as possible without having the fortune to get it 100% authentic.


metaphors be with you
#15224 - 09/13/06 5:04 am Re: 1940s BSA Frame and Engine Numbers.  
Joined: Jul 2001
Posts: 2,086
Morgan aka Admin Offline
Ride safe today!
Morgan aka Admin  Offline

Ride safe today!

Joined: Jul 2001
Posts: 2,086
Gothenburg, Sweden
It's this website too

http://www.britbike.com/bsapitstop/dating/index.html

or use menu above and go for "BSA Info" and then "identification"


BSAing you
Morgan Johansson
BritBike.com.
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#15225 - 09/14/06 1:44 am Re: 1940s BSA Frame and Engine Numbers.  
Joined: Sep 2006
Posts: 36
CanadaBike Offline
BritBike Forum member
CanadaBike  Offline
BritBike Forum member

Joined: Sep 2006
Posts: 36
Canada
Hey jfligg,
I'm in toronto..


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