Yes, almost certainly ex Morgan three wheeler for reasons set out above.
Also it has the correct magneto front cover as motorcycle fitment used a chain drive magneto as opposed to the bevel gear driven Morgan magneto.
Turning to the rear, no evidence of a chain mark on the crankcase, suggests that this was run with a cone clutch.
The letter after the oblique is significant as using the JAP dating code 'PNEUMATICS' where P indicates 1920, N indicates 1921, E indicates 1922, this engine can be dated to 1923.
Arwyn
Last edited by Arwyn Williams; 21/08/17 08:10 PM.
