bigboreshee Posted February 1, 2004 Report Share Posted February 1, 2004 Recently swapped 13T front sprocket for 15T and it bogs in 6th. Does it sound like i need to adjust mains? Quote Link to comment Share on other sites More sharing options...
sweetshee4312 Posted February 1, 2004 Report Share Posted February 1, 2004 your not gonna have to rejet for sprocket changes, what are u mods Quote Link to comment Share on other sites More sharing options...
sredish Posted February 1, 2004 Report Share Posted February 1, 2004 No, you don't seem to have the power to pull the 15 tooth sprocket. Either get a smaller rear sprocket, or go back to a 14 tooth front. 38 teeth would be about equal to going back to a 14 tooth in front, so maybe try a 40 or 39 tooth sprocket to see if you can pull that. You can get them at Rocky Mountain ATV. Your sprockets have nothing to do with your jetting. You can either change your sprockets to find out what your bike can handle, or you can get some pipes and other goodies to get the power to pull the 15 tooth up front. For instance, there are some guys here that run a 16 tooth up front. I currently run a 15 tooth up front, and handle it pretty easily w/o too many mods. Quote Link to comment Share on other sites More sharing options...
Just for fun Posted February 1, 2004 Report Share Posted February 1, 2004 check your compression and agreed, do a plug chop. Didnt see the mods you had on my previous post. Compression should tell you what kind of shape your engine is in. Quote Link to comment Share on other sites More sharing options...
Blue Duece Posted February 1, 2004 Report Share Posted February 1, 2004 id say keep the 15 and do a plug chop your probally rich, pipes and the head will pull that 15 for sure with the pc's.....i ran the same setup before and it pulled like a sob with a 15....i take it your not in sand? Quote Link to comment Share on other sites More sharing options...
fixitrod Posted February 1, 2004 Report Share Posted February 1, 2004 I agree with Blue Quote Link to comment Share on other sites More sharing options...
bigboreshee Posted February 1, 2004 Author Report Share Posted February 1, 2004 I recently rejetted to 320 mains and 30 pilots for dual K&Ns at 400ft. above sea level with stock carbs and mods listed below.Ran perfectly fine with a 13T, switched to the 15T and couldn't get 6th to stretch out Quote Link to comment Share on other sites More sharing options...
bigboreshee Posted February 1, 2004 Author Report Share Posted February 1, 2004 not in sand Quote Link to comment Share on other sites More sharing options...
fixitrod Posted February 1, 2004 Report Share Posted February 1, 2004 You're putting more strain on the motor. You're engine will pull it, but jetting is more critical with the extra power that's needed. Quote Link to comment Share on other sites More sharing options...
Blue Duece Posted February 1, 2004 Report Share Posted February 1, 2004 I recently rejetted to 320 mains and 30 pilots for dual K&Ns at 400ft. above sea level with stock carbs and mods listed below.Ran perfectly fine with a 13T, switched to the 15T and couldn't get 6th to stretch out thats your problem, pro circuit recomends stock needles stock pilots and the main they provided(i have my stock carbs sitting in a box in the garage i could check to see what size the main is)....i have riddin that pc setup in death valley 500 feet below sea level and at my pad which is 2500 feet, ran great both places.......pc's arent fuel and air whores like a toomey or fmf......everytime ive changed it ran like shit top end and didnt pull past 5 th either..... Quote Link to comment Share on other sites More sharing options...
Blue Duece Posted February 1, 2004 Report Share Posted February 1, 2004 not in sand i tried it on pavement in dirt, long sand washes, its the pilots and needles Quote Link to comment Share on other sites More sharing options...
bigboreshee Posted February 1, 2004 Author Report Share Posted February 1, 2004 Are you saying that if i want to run the 15T i will need to change pipes? Messing with the mains will not solve my problem? Will a 14T solve my problem? Do i have to go back to my 13T in order to run my current setup? Can someone please explain why increasing the front teeth causes it to bog at top end? Quote Link to comment Share on other sites More sharing options...
Banchetta Posted February 2, 2004 Report Share Posted February 2, 2004 Its bogging on top end because you don't have the power to keep the motor in powerband w/ that gearing, but here is the thing. YOU SHOULD!!!! I've ran pc pipes w/ stock porting and stock carbs and had no problem running a 15t sprocket....Something is wrong. Do a plug check after running wide open in 6th gear for 5-10 seconds, shut it down and pull the plugs. Tell us what color they are, then do a compression test and see where your at...... Quote Link to comment Share on other sites More sharing options...
Blue Duece Posted February 2, 2004 Report Share Posted February 2, 2004 Can someone please explain why increasing the front teeth causes it to bog at top end? that bike with pc pipes jetted correctly will pull a 15 fine......its not the gear its the bike do like banch says, somethings making it fall off the top, but its sure not the 15 unless your in deep sand going damm near straight up.......in the case where the motor ran tits and you geared it to high it would bog in high gear, because theres not enough power to pull such a tall gear....if you would have asked "hey i put a 19 tooth front sprocket on my piped but otherwise stock shee and it bogs, whats up?" we would all say its cause it cant pull that gear, in your case we are telling you your setup will pull a 15 just fine weve all done it.........do like banchetta is saying and check those other things....... Quote Link to comment Share on other sites More sharing options...
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