[Fot] TR3 rear axle inspection - road car

[Greg Blake]

Rebuilding Will’s TR3 rear axle this weekend and found little notches at the end of the shear key on both axles. The picture is if the passenger side which is the worst. 

1). How does this happen?  It doesn’t look like a crack more like punch or chisel marks at the end of the key. 

2). Is this problematic as a stress riser for a street car?  If so, can I just grind and smooth these marks out and be good?

Thanks. 

Greg

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