I'm thinking the ring gap could have been the issue. Of course I can't measure them now. Also, not sure if the knocking from the timing or the timing it's self being off would cause it either. But the gap issue could explain both rings broken so close to the cut in the ring. I'd think if they were cracked on install it would have been somewhere not right next to the cut.
I don't believe the cylinder is that far worn to warrant a bore job, not in my opinion. Also checked with my father who was a GM cert. mechanic back in his day, and has worked on everything from chainsaws to diesels and he also doesn't think that this would need bored out. Not saying you guys are wrong but at this point in time I'm going to try my luck with a new piston and rings and see how I make out. The overall condition inside the motor is pretty good and doesn't show much wear anywhere. The meter shows just over 300 hrs on it. So I'm thinking this tractor has had a pretty easy life.
|