ORIGINAL: flybyjohn

So my problem must be that the case is worn out. Is there anyway to fix this problem other than buying a new case. I was thinking back to high school auto mechanics and remember that when the valve guides on engines got too worn we had a tool that would run a spiral machine mark down the guide to make it a little tighter. If I could chuck this in my lathe and run a machine mark several places around the case on the inside where the crank goes through, do you think that might work. I would of course have to run the lathe backwards from a cut so that the metal actually was scored (deformed) instead of being cut. If the interference is too tight when done, will the engine running wear it down so to speak so that there is not a lot of friction after running a bit? What say yee all? I don't want to throw this engine away now because with the crank and bearings, I have just passed the getting ticked off stage and I am going to make this engine run come high water but don't want to through any more money at it.