Quote:
Originally Posted by OsoMoore
The loose nut on the end of the camshaft also seems pretty wild to me. Maybe it got loose first, leading to the damage to the hub teeth, eventual timing slip, and catastrophic results? But wouldn't a chain slip result in damage to all the valves on that side?
Or could the nut be knocked/shaken loose by the cam getting jammed at high RPM?
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I'd look at the threads on that nut, they look very shiny from the photo. If the sprocket were spinning while the cam was frozen it might have stripped the nut. Same with the keyed sprocket on the cam being chewed up.
This is spitballing, I bet someone can chime in that's seen this same thing before.