Has anyone ever solved the problem with the cylinders blowing on the 1972 Scorpion Sup Stinger snowmobiles?

[chippewa97]

1972 440 Super Stinger snowmobile

[livewire_usa]

if both cylindes have gone bad then they probably never got the right oil mixture. I've had newer sleds do that with oil pumps going out which is why I usally just premix all my sleds. maybe the wrong premix did that or jsut a fluke thing, pull them apart and see what did it, you can tell if it was wrong amount of oil, there won't hardly be any on the cylinders. bearings go out, seal break, and so to rings this can all cause it to blow.