Join Date: 12-07-2001
Location: Sun Prairie, WI
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Re: For People that have thrown a Rod!
I'm guilty of seizing a motor and welding my bearings to my connecting rods (oil pickup was clogged). Obviously did a dandy on the crank and connecting rods. As far as the scuffs on the cylinder walls, it seems to be normal. The combination of the skirted pistons and the motion the piston travels seems to result with some scuffing on the sidewall. When I put new pistons in mine, I put light 45 degree scuff marks on the piston sidewall so the oil would hopefully sit there and help cusion this contact.
I don't see how you could have the cams off 180 if the sprockets were never removed from the cams. If the instructions in the manual were followed, all timing should have been on. If I remember correctly the manual walks you through it and has you double check by rotating the crank one full cycle and has you recheck to make sure your timing marks are still aligned. As mentioned earlier, the tensioner could be suspect. If you lose the tension on the guide, it could skip time quite easily and have resulted in what you have explained.