1948 BSA B31 350cc Circa Specifications and Pictures

Old Classic Motorcycles BSA B31 350cc Circa 19481948 BSA B31 350cc CircaBSA B31 1948 350cc Circa Specification:Place SaverEngine: 740 cc, inclined transverse light alloyArrangement: 3 Cylinders, OHV, Pushrod operated valvesBore Stroke: 67 X 70Compression Ratio: 9.5 : 1Intake Open/Close° BTDC / ° ABDC : Exhaust Open/Close ° BBDC / ° ATDC : Carburetors: Amal (3) 626Starter: Ignition: 3