Experiences with Cam/Crank Locking tools?

[erikv11]

I’m struggling with that crack.

The load is spread out over the 26? Splines so any one spline sees very little load, but on the von side, the pulley is getting 2000 strikes per second of impact. That impact is damped by the pulley so the timing belt system doesn’t feel it.

I’m a viscous cheapskate but if I had this that far apart, I would replace it, especially since it’s hard to inspect.

That crack is probably at least 50% longer than it looks, and it’s headed for the locator pin.

...

Voice of reason. Replacing it is not a lot of money, compared to value of one lot of peace of mind.

[volvolugnut]

My thoughts:
Cracks tend to grow when exposed to cycling loads.
If the crack grows and the hub splits it will get looser and if the nut does not hold in place, hammer out the crank nose spline. A bad crank is likely a death sentence for older engines.
It is mostly disassembled and a used hub is $20.
I would change the hub without locking the crank and never worry about it again.
volvolugnut