traintech55
Senior Member
Sounds like you found your culprit with the cylinder with the rust in it. First thing is to get the piston out, I use a wire wheel on a drill and clean as much of the rust out as possible, then spray the cylinder with P B Blaster and let it soak. remove the connecting rod bolts and tap the piston out of the block, (Make sure you only do one piston at a time and don't mix the rod caps up).
If the crank and bearings are good the cost of a rebuild should not hurt to badly.
If the crank and bearings are good the cost of a rebuild should not hurt to badly.