Question about Harley Davidson Harley-Davidson Motorcycle Desktop Telephone

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ZB 33 and BB 33 BSA

Sir, would you be kind enough to tell me the size of piston for ZB and BB 33 BSA motorcycle.Secondly how many ball bearings are used in the crank case of ZB,BB 33 and 31 engine.What is the exact horse power of 33 and 31 respectively.
Are you aware that BSA had produced BB 31 twin 350 cc? Here they have used BB 31 frame and Triumph 3T motor but this model is not recorded anywhere.Probably only few samples had been made.
I will appreciate for a quick response.
Best regards
Dilip

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  • bcm_ltd Mar 24, 2008


    posted by bcm_ltd on Mar 24, 2008
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    Sir, would you be kind enough to tell me the size of piston for ZB and BB 33 BSA motorcycle.Secondly how many ball bearings are used in the crank case of ZB,BB 33 and 31 engine.What is the exact horse power of 33 and 31 respectively.
    Are you aware that BSA had produced BB 31 twin 350 cc? Here they have used BB 31 frame and Triumph 3T motor but this model is not recorded anywhere.Probably only few samples had been made.
    I will appreciate for a quick response.
    Best regards
    Dilip

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Hi,
try these guys - they have supplied me with BSA parts a few years ago when I was running a 1942 BSA WM20. My local shop closed down at the beginning of the year. I can't tell you the correct size, am not very familiar with the other engines, but maybe this link will help?

http://www.draganfly.co.uk/shop/pi-166342245.htm?categoryId=513
http://www.draganfly.co.uk/shop/pi-854654882.htm?categoryId=509

if your engine / piston size is not one of these then drop them an email at Draganfly and they should be able to help you.

http://www.umgweb.com/usedguidB.html

B31 1945-60 348cc (71x88mm) OHV single 17hp, 75mph, 80mpg, 325lbs

B33 1945-60 499cc (85x88mm) OHV single 24hp, 85mph, 70mpg, 345lbs

Hope this also helps you. Can't help you with bearings though - sorry mate.

Posted on May 24, 2008

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No solution has been found yet.This is not for Harley Davidson but for BSA motorcycle.Only clarification is needed.Anybody with the answer will be appreciated.
Thankyou
Dilip

Posted on Mar 25, 2008

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