How much is too much

[Dick Steinkamp]

Originally Posted by forever4

The nose of the camshaft gets wiped off.
Typical, maybe more so on reground cams.

In order for the valve clearance to INCREASE with wear, it would have to be that the HEAL of the cam (not the nose) wore faster than the valve receded into the seat.

Having the NOSE of the cam wear would reduce valve lift but would not affect valve stem to lifter clearance.

I think it is unlikely that the heal of the cam wears to the point of affecting clearance in these low valve spring pressure engines.