Manx Club

A friend gave me this motor. ID stamp is B5186302 I have a chart but nothing starts with B. If you discount the B I come up with a 1957 1200 but I dont think its that old. Any ideas???

1968-1969 1600 single relief Type 2, according to my chart.

Thanks Lee. Which chart do you use?

This one works... http://www.partsemporium.co.uk/Engine%20Codes.htm

Thanks David. That chart is alot easier to understand.