i also leaned the
motor ((
Internal Combustion Engine ? )) out over the weekend part of the reason for the head swap. I purchased this bike a week ago cleaned and painted and took it out on the maiden voyage 45 mins into trail ridding. i decided it was time to go to the trailer to cool it off on the way back to the trailer it sounded like it was hitting the rev limiter so i let off a hare on the throttle and it cleared out then it just all of a sudden spitted and sputtered and dead it was hit the starter and nothing just click tried to pull the rope locked pulled it back to the trailer and pulled the plug and then it would turn over but very little compression pulled top end piston scared on onw half of piston skirt. cylinder scared. it had a wiesco p4 piston boring cylinder and going to a p6 only one bore left out of this cylinder. from what i understand about these bikes its my first 350 always had 250 before. also this bike has stock exgaust comet 102 c drive clutch. and k&n filter every thing else is stock what can i do to this thing to make it a little bit more reliable. i now the bikes a 20 years old but you all seem to know a lot about these from what i have seen in the past.