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G80CS 1951
Posted: Sun Dec 11, 2016 7:08 pm
by joakim
What is the correct engine block (left side ) marking for this model?
rgds Joakim
Re: G80CS 1951
Posted: Sun Jan 01, 2017 11:41 pm
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.
Re: G80CS 1951
Posted: Mon Jan 02, 2017 8:17 am
by clive
The s may be out of line with other letters/numbers
Re: G80CS 1951
Posted: Tue Jan 03, 2017 12:06 am
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.
Re: G80CS 1951
Posted: Tue Jan 03, 2017 8:54 am
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!