Author Topic: piston id.  (Read 490 times)

Offline townsends20

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piston id.
« on: 23.04. 2014 10:02 »
I am having a sort out of all the old a10 parts i have laying around, i have a set of used pistons, these are the original 9.1 from my rgs can you tell me if thay are standard, the underside carsting numbers 67/1371  the top side what i can read is 67-1555 bsa v30576h?? there is no scoring two rings missing and only one pin. so with new rings and new pins there  good. ( feel free to make an offer if its up your street)
1962 rgs

Online bsa-bill

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Re: piston id.
« Reply #1 on: 23.04. 2014 10:24 »
http://www.hawkshawmotorcycles.com/bsa3.html

According to this it seems  +20 that's assuming different part No for different oversize, my barrels are +40 otherwise I would have been interested
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco