Chainsaw Repair

How does A2 work for rings? Were they hardened? Compare with the original Meehanite gray iron for rings? Other variations?

From one extreme to another?

I had to repair a European engine that the guy had caught the ring gap in the exhaust port at assembly. I was able to pull the previously run ring out of the piston grove through the exhaust port and it didn't break??? I figure he had originally got it too hot? The hard cylinder wasn't scored.

The Chinese ideology of a ring is that it be very hard. Most of the Chinese engines I see, you can run them for a year and the ring is still not fully seated all the way across the exhaust port.  Of course they are running in a "as cast" cylinder.