G80CS 1951

Information relating to the Matchless G85 500cc Heavyweight, AJS 7R, Matchless G45 and Matchless G50
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joakim
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Joined: Sun Dec 11, 2016 7:03 pm
Location: Finland

G80CS 1951

Post by joakim »

What is the correct engine block (left side ) marking for this model?

rgds Joakim
577typhoon
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Joined: Mon Jan 01, 1990 12:00 am
Location: BERKSHIRE UK

Re: G80CS 1951

Post by 577typhoon »

51/G80 stamped to the left followed by a gap and towards the right side the actual engine number with a separate C and a separate S in the vicinity of the number. If this is not clear PM me and I will send you a photo of a 51 G3LCS crankcase number.
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clive
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Re: G80CS 1951

Post by clive »

The s may be out of line with other letters/numbers
clive
if it ain't broke don't fix
577typhoon
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Joined: Mon Jan 01, 1990 12:00 am
Location: BERKSHIRE UK

Re: G80CS 1951

Post by 577typhoon »

I agree with Clive but having just looked at my 51 G3LCS crankcase the S has not been stamped! Strange as the bike was never a rigid model.
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clive
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Re: G80CS 1951

Post by clive »

In 51 they were probably still selling lots of rigids and the S would have been added once the machine was built up, or that's my assumption as the S was often out of line. For it to be missing suggests a replacement engine, or an end of the week build or a dealer modified rear end. I wonder what the factory records have to say. Oh the records for the comps were done separately and may not be available!
clive
if it ain't broke don't fix
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