is this damaged cylinder usable?

[trains]

Seen a few straight from the factory with pits like that, they run with no problems if the hole does not go all the way through to the outside. Fixed one that did with JB Weld.

Thats good enough for me, thanks Pioneerguy600.

 

[pioneerguy600]

We have noticed many more pits in the cylinder walls since Stihl has changed supply of these cylinders to their own plants in China, cylinders with Stihl cast in the cylinder head or base are the ones I have seen the most pits in the cylinder bore. These will eventually fill in with carbon and they don`t really affect the way the engine runs.