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swift.Sun Dec-13-09 09:38 PM
Member since Dec 13th 2009
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"Help with identification."


          

Hello all, i just picked up a slim line and having difficulty identifying engine. From the research i have done, it appears heads are from the P11. Heads are stamped with serial 24237. Sound correct?

Regarding engine, it is stamped with 20 / 122093 / P. Now, its my understanding the 20 refers to Atlas, but can anyone help me identify remaining?

Thanks so much.

  

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dynodaveMon Dec-14-09 07:00 AM
Member since Mar 18th 2009
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#1. "RE: Help with identification."
In response to Reply # 0


  

          

The part number you state does not sound familiar as a norton twin head.
I have some info here that might help you identify the head.
I am unaware of the low production twins having different parts except possibly for the primary bolt on pattern.

http://atlanticgreen.com/nhth.htm

20 is the code for 750 atlas vintage motors.
I forget when 20M took over... then 20M3 is early commando

  

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