First of all I'm new to the "tractor scene" so I hope I don't sound to ignorant.I'm helping a friend with an Oliver 70 (1937?) The engine was locked up because it sat outside in the weather for years with the spark plugs out of it (not sure why?). He brought me the engine in a box...kinda scary, but I'm a sucker for a challenge! I measured the cyl. bores and ring end gaps and am worried. The bore is supposed to 3.1250, but I measured 3.1260 in one of the cyl's....all the way up to 3.1402 in the others. He had the local parts store match up some rings (Perfect Circle, S4532 RS-6009) that seem to fit nicely, but the ring end gap ranges from 0.020 in the best cyl to 0.040 in the worst. This is way too much for what I'm used to, but he is not concerned because the tractor will hardly ever be used...just wants to show it, not use it. As It stated before, I'm used to car engines where I would think there should be no more than 0.025 for the ring end gap. My question is will this be o.k. for what he wants? Will it smoke badly? If no o.k. where can I find sleeves/pistons, rings, etc?
| 
