Dave wrote on 08/10/18 at 04:25:55:From the looks of the gouges the cam chain made......I would think the cause of the cracks is evident!
That cam gear was abused when the chain broke.
Abused ?
Ahhhhhh yes, and that is an understatement to say the least.
And I agree with the last comment by Dragbikemike that the forces involved that did this damage were tremendous.
I’ve seen a lot of engines from parts bikes, most with toasted engines and several where parts were torn apart and thrown about the cylinder. But I have never seen a cam gear damaged like this before.
This is remarkable.