Hi all,
Just joined the forum this morning. I ride a modified Banshee but just picked up a really nice purple 91 blaster w/locked up motor the other day for $200 for my son. When I tor it down I found a melted piston. Rings were pinched and most of the intake side if the piston skirt was in the bottom of the motor. It looker like the motor was getting oil so I took the carb apart. It had a 230 main with a FMF pipe so I figured that was the cause. I have not split the cases yet and have a few questions maybe some of you can help me with.
The counter balance shaft has a really tight spot in it when I turn it over by hand. Is this part prone to bending or bearing failure? What is the cause of this?
After flushing the bottom end with solvent and re-oiling everything the crank spins like silk. The rod has zero play up and down but will rock .090” back fourth at the small end. I haven’t got a shop manual yet. Does it sound like the rod is in spec? Big and little end have no discoloration.
The cylinder actually looks great and I’m thinking of just going with a new std piston and rings. What grit stone should I hone the cylinder with?
Dose anyone have a link to any manuals or parts breakdown on line or .pdf files they can email me?
Thanks you all. I can’t wait to ride this thing. Looks like a fun little quad. Sure can’t beat the price.
Just joined the forum this morning. I ride a modified Banshee but just picked up a really nice purple 91 blaster w/locked up motor the other day for $200 for my son. When I tor it down I found a melted piston. Rings were pinched and most of the intake side if the piston skirt was in the bottom of the motor. It looker like the motor was getting oil so I took the carb apart. It had a 230 main with a FMF pipe so I figured that was the cause. I have not split the cases yet and have a few questions maybe some of you can help me with.
The counter balance shaft has a really tight spot in it when I turn it over by hand. Is this part prone to bending or bearing failure? What is the cause of this?
After flushing the bottom end with solvent and re-oiling everything the crank spins like silk. The rod has zero play up and down but will rock .090” back fourth at the small end. I haven’t got a shop manual yet. Does it sound like the rod is in spec? Big and little end have no discoloration.
The cylinder actually looks great and I’m thinking of just going with a new std piston and rings. What grit stone should I hone the cylinder with?
Dose anyone have a link to any manuals or parts breakdown on line or .pdf files they can email me?
Thanks you all. I can’t wait to ride this thing. Looks like a fun little quad. Sure can’t beat the price.
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