bansheee87 Posted January 30, 2008 Report Share Posted January 30, 2008 hi i have a 87 banshee i just rebuilt new crank, board .20 over wiseco pistons, fmf fatty pipe ,boyesen reeds,stage 3 fmf carb kit, k&n air filters. it might of had 4 hours on it. i went ice racing and about 8 laps into it i blew it up. took it apart and there was a hole in one piston and some shavings went into the crank case so im woundering what to do, i have a wsm big bore kit with 70.5 pistons but what else would i have to do to the motor , any other performance suggestion would be helpfull. thanks ty Quote Link to comment Share on other sites More sharing options...
04titanse Posted January 30, 2008 Report Share Posted January 30, 2008 hi i have a 87 banshee i just rebuilt new crank, board .20 over wiseco pistons, fmf fatty pipe ,boyesen reeds,stage 3 fmf carb kit, k&n air filters. it might of had 4 hours on it. i went ice racing and about 8 laps into it i blew it up. took it apart and there was a hole in one piston and some shavings went into the crank case so im woundering what to do, i have a wsm big bore kit with 70.5 pistons but what else would i have to do to the motor , any other performance suggestion would be helpfull. thanks ty I am no expert but front all my knowledge and everything i have learned here i would say dont bore it out too much it wont gain you much and it will decrease the # of time you can bore the cylinders. Also if you want more power you could get it ported and do cool head and a timing plate. Or any combination of them. Head and timing should increase bottom end and the porting will make the most power and will be a huge difference( at least from what i am told.) Good luck man. Hey it also sounds like you were running too lean. Make sure you double and tripple check those plugs before you go WOT for a long time. Quote Link to comment Share on other sites More sharing options...
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