Piston Marks

Information relating to the Matchless G2 or AJS Model 14 250cc Lightweight
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BeenyBoy
Posts: 64
Joined: Wed Sep 18, 2019 11:42 am
Location: Lincolnshire UK

Piston Marks

Post by BeenyBoy »

1965 G2csr

How is the piston size identified- normally I would expect it to be stamped 'std '...'+20.'...'+40' or whatever on the piston crown- but all I have is 'front' and a reference number

ta
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clanger9
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Location: Chester, UK

Re: Piston Marks

Post by clanger9 »

Check the parts list - each part number has a different size associated with it:
http://archives.jampot.dk/book/Spares_l ... models.xls

If your CSR has a high compression piston, you'll need to look in the scanned list here:
http://archives.jampot.dk/book/Spares_l ... o_1966.pdf
1989 Moto Morini Dart 350
1993 Ducati 750SS
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Rob Harknett
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Location: ESSEX UK

Re: Piston Marks

Post by Rob Harknett »

clanger9 wrote:Check the parts list - each part number has a different size associated with it:
http://archives.jampot.dk/book/Spares_l ... models.xls

If your CSR has a high compression piston, you'll need to look in the scanned list here:
http://archives.jampot.dk/book/Spares_l ... o_1966.pdf
Still looking for a complete copy of that 1966 parts list, which is in an old duplicated format, not printed like others are. Some one out there must have a copy.
Rob.
BeenyBoy
Posts: 64
Joined: Wed Sep 18, 2019 11:42 am
Location: Lincolnshire UK

Re: Piston Marks

Post by BeenyBoy »

Thanks guys

042848/3 tells me its standard


cheers

keep safe !!

Mike
56G80S
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Re: Piston Marks

Post by 56G80S »

I had a 1966 14CSR, I'm sure it ran at around 10:1, might've been 10:5:1.

I think all I had to work with was a PItman or FWNeill book.

I can't get to my manuals, they're in a large briefcase at the back of the lock up.

Johnny B
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Rob Harknett
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Location: ESSEX UK

Re: Piston Marks

Post by Rob Harknett »

56G80S wrote:I had a 1966 14CSR, I'm sure it ran at around 10:1, might've been 10:5:1.

I think all I had to work with was a PItman or FWNeill book.

I can't get to my manuals, they're in a large briefcase at the back of the lock up.

Johnny B
Find them all here www.archives.jampot.dk
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