condor

Thanks for the info. I suspect...I may have been running lean in the right side. The plug was gray. Left side looked okay though. I'm running a 290 main jet. Should probably start at 320 and work my way down when I'm back up. Going to do a compression test, and crankcase leak test before starting it.

Riding my banshee wot this past weekend, she suddenly lost power. I found the right side piston top had a piece blown off. The rings and piston are fryed and the cylinder is scored, but not too bad. Any suggestions as to whether to replace the cylinder or bore both out? If boring, what size from a stock cylinder? Should I just re-sleeve the cylinder? Anyone gone through this.....? Thanks.