That I would like to see.

I have several small block cranks that came from untouched motors, very very common to knurl things.

Migs, im sure you know there are many many people around with the correct font stamps and ways to use them. I know a couple who will stamp any block any way you want it but ya got to go to them. If I ever got close to them id melt the tips off.

Knurling piston skirts was a common thing rather than replacing the pistons when doing a refresh on an engine back in the earlier days.

I was actually recently looking for a machine shop that could still do the work. But haven't found any that do.

i forgot about piston knurling. thanks for shaking the cobwebs !

Knurling on parts that see constant friction movement (like pistons, valve guides, etc) has a down side, knurling reduces the contact surface area and the part will wear quicker. Knurling a part like a crank snout to restore its diameter is different since the balancer is a press fit and there's no constant movement.

As I said earlier, the factory was reluctant to scrap a part if it could be saved with a simple procedure.

I have one similar to this. I used to do many old farm tractor ring jobs and valve jobs/clutches and knurling was the norm.

I recently pulled a 318 apart and they were all knurled. From a rebuild.

Seen better days.

watching that video you posted kinda reminded me of my machinist days, when someone would get the stop set a few thou too close to the chuck.........