bombedbanshee06 Posted April 20, 2008 Report Share Posted April 20, 2008 OK this is whats been going on ,its has been fouling up the left hand plug ive replaced reeds,intake boots,coil and leads and swapped over carbs from my brother bike(same jets 320 main but 25 pilot) but left the same neddles in that were in mine bike went for a ride today and it foul the plug again put in and new one then went for a ride it was running good for 20mins and then it was running off and then started making a rattling sound turned it off and brang it home and this is what i found is Wrist pin bearing on the left hand side has be all smashed into small bits, so what is the cause of all this its really giving me the sh.ts. When you split the bottem end is there a short cut to just the crank for little bits of shit soo ido not need to pull the hole thing a part cheers Ian P.S sorry about my english too Quote Link to comment Share on other sites More sharing options...
xXBlessedWithDeathXx Posted April 20, 2008 Report Share Posted April 20, 2008 you can blow pieces out of the crank with air. tip it on its side and go to town. as for why that happened i dont know. i never heard of a bike blowing up for being to rich. maybe it was just its time. bearings do ware. Quote Link to comment Share on other sites More sharing options...
jonnyb Posted April 20, 2008 Report Share Posted April 20, 2008 This just happened to me, good luck. My hole engine had to be done. Bearings where all over in the bottom to. Good luck. Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted April 20, 2008 Report Share Posted April 20, 2008 i wouldn't be blowing any air to try and get the debris out. you could possibly blow some fine particles into the balls of the bearings. the only proper way is to disassemble the bottom end entirerly and flush it out and also inspect the crank bearings while in there. rotate the bearings and feel for any binding or rumblyness of the bearing. my buddy had his wristpin bearing shatter as well. he was using wisecos. don't know if that has anything to do with it. his was the right cylinder. how does the plug color look when doing a wide open run for like 600-1000 feet? cardboard brown? is the left cylinders plug all sooty black on the outside around the white porcelin? that would indicate a faulty spark plug cap. poor connection to that plug. you can see my mods in my signature and here is my current jetting: 350 mains, stock needles w/clip in middle postition, 25 or 27.5 pilots...(can't remember which), stock needle jet, stock air jet, can't remember # of turns on pilot screws. my elevation is 900-1000 feet above sea level. Quote Link to comment Share on other sites More sharing options...
jonnyb Posted April 20, 2008 Report Share Posted April 20, 2008 That is the exact thing that happened to me. using wisecos. don't know if that has anything to do with it. his was the right cylinder Quote Link to comment Share on other sites More sharing options...
bombedbanshee06 Posted April 20, 2008 Author Report Share Posted April 20, 2008 so y do ya think its doing plugs the are really wet when this happens a new plug and its all good Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted April 22, 2008 Report Share Posted April 22, 2008 (edited) u might have the float bowls on the wrong carbs. there is a right way and a wrong way. i wonder too if the choke is leaking. Edited April 22, 2008 by mopar1rules Quote Link to comment Share on other sites More sharing options...
bombedbanshee06 Posted April 23, 2008 Author Report Share Posted April 23, 2008 u might have the float bowls on the wrong carbs. there is a right way and a wrong way. i wonder too if the choke is leaking. When i put here back togehter the carbs are going to be cleaned out good. The was i hade taking the carbs of my brothers bike and that bike was running fine so this is a hard one i think .Dose anyone think that it mite have be a bad wrist pin bering from the day that i hade rebuild it and it just shit itself in the frist 20mins from the rebuild and thats why its fouling the plug and know just give way. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted April 23, 2008 Report Share Posted April 23, 2008 Your jetting is fat, but not too fat...and there were other problem. Don't know if it's an air leak, bad/worn parts, etc. But you're going to have to find out the hard way now...strip it down, split 'em. Quote Link to comment Share on other sites More sharing options...
bonbon Posted April 23, 2008 Report Share Posted April 23, 2008 Your jetting is fat, but not too fat...and there were other problem. Don't know if it's an air leak, bad/worn parts, etc.But you're going to have to find out the hard way now...strip it down, split 'em. LOL sounds like prom night in high school...... :thumbsup: Quote Link to comment Share on other sites More sharing options...
KEVSWS6 Posted April 23, 2008 Report Share Posted April 23, 2008 LOL sounds like prom night in high school...... :thumbsup: OMG! :laugh: :beer: Quote Link to comment Share on other sites More sharing options...
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