Ok now I know one of you clever people will help me with my next issue....
I have managed to source a crank (not the right one for this engine) that has the same gear pressed on.
My local shop will be able to press off the gear so I can use it to replace my broken one.
But now I have a conundrum.....
The cam timing on these engines is done by aligning a dimple on crank gear with a dimple on the camshaft gear. The video here will be a big help explaining
https://youtu.be/aNGT5X6315QThe problem is because the crank gear is not keyed on just a press fit I have no way of determine where the dimple should go.
So I will have to figure out a way to do the cam timing some other way.
My thought is to install the cam with the lobes furthest away from the valve lifters with the engine at TDC on the compression stroke with the magneto magnets lined up so I know this is the firing positions.
Any thoughts on my approach?