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Dirt Bike Brands - Other
motor help~~~~
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[QUOTE="russell.k, post: 1196114, member: 70601"] It happened in a whoop or roller section started makin a noise then shut off,leaking oil and coolant out the front of the engine. After i pulled off we checked to see to see if it was lock up and it was.The bottom of the piston was broke off on one side where the wrist pin connects to the rod the other side where the wrist pin goes is still intact.The rod broke appox 2 in from where the wrist pin goes and had a slight twist to it.The cylinder had a few deep scratches that may have been from the piston twisting when the one side broke and a gouge that looks as if the rod may have hit it.The wrist pin was found in the bottom of the motor.The bike is stock no motor mod except for a boysen quick shot.The valves where kibblewhite black diamond.When I did the top end I just cleaned the piston and put new rings on it because it was in spec.Sorry to be so long just trying to be as specfic as possible....do they have stock motors or are they all 290's~~~thanks again for your help [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
motor help~~~~
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