Background information: I picked up a '92 ski-doo formula plus x and put about 50 miles on it before it melted a piston (mag side). I had the cylinder bored .010 over and used a new oem piston. I pulled the carbs and they were fairly dirty so I cleaned them. Jetting is stock.
I put it all back together and had it running. Let it warm up good, rode it around the house twice and let it cool down. Fired it up again and let it warm up good. Rode it down to the lake and rode about 100 yards on the lake before it siezed. I never exceeded ~35mph and rode less than a mile.
I pulled the head to reveal a nice vertical gouge right where the pin that aligns the ring rides. There are a couple other areas where the piston lightly scraped the cylinder. In its current position, I can slightly turn the crank so that the mag side piston will slide upward slightly but it won't really move. It looks like the ring end-gap was set properly.
I could be wrong but I can see a gap in the other ring and cannot see the gap in the ring on the new piston. Should I suggest to the dealer that he is responsible for the damage?
My other question is how do I remove the cylinder and piston from the engine. The piston is siezed in the cylinder where I can't get to the wristpin. Should I just pound the piston out with a peice of wood?
I snapped some pictures but they didn't turn out good. When I pulled the plugs the PTO side (no problems with this side so far) was tan, the MAG side plug was charcoal.
I put it all back together and had it running. Let it warm up good, rode it around the house twice and let it cool down. Fired it up again and let it warm up good. Rode it down to the lake and rode about 100 yards on the lake before it siezed. I never exceeded ~35mph and rode less than a mile.
I pulled the head to reveal a nice vertical gouge right where the pin that aligns the ring rides. There are a couple other areas where the piston lightly scraped the cylinder. In its current position, I can slightly turn the crank so that the mag side piston will slide upward slightly but it won't really move. It looks like the ring end-gap was set properly.
I could be wrong but I can see a gap in the other ring and cannot see the gap in the ring on the new piston. Should I suggest to the dealer that he is responsible for the damage?
My other question is how do I remove the cylinder and piston from the engine. The piston is siezed in the cylinder where I can't get to the wristpin. Should I just pound the piston out with a peice of wood?
I snapped some pictures but they didn't turn out good. When I pulled the plugs the PTO side (no problems with this side so far) was tan, the MAG side plug was charcoal.