yamahaman244 Posted October 13, 2012 Report Share Posted October 13, 2012 hey guys me and a buddy put my wheeler together lastnight bought some mx ported cylinders from guy off hq kinda need some help with jetting got stock carbs now everythings good but the main it has almost 150 pounds of compression on each cylinder with stock head idk if normal 91 octane will be fine or not? were right in the middle of wisconsin and its getting colder out right now theres 330s in for the main rode it around and it dont feel right be nice if u guys could give me a idea on were to be not sure on the level we are on right in the middle of wisconsin jump river wi thanks Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted October 13, 2012 Author Report Share Posted October 13, 2012 hey guys me and a buddy put my wheeler together lastnight bought some mx ported cylinders from guy off hq kinda need some help with jetting got stock carbs now everythings good but the main it has almost 150 pounds of compression on each cylinder with stock head idk if normal 91 octane will be fine or not? were right in the middle of wisconsin and its getting colder out right now theres 330s in for the main rode it around and it dont feel right be nice if u guys could give me a idea on were to be not sure on the level we are on right in the middle of wisconsin jump river wi thanks says its 1,185 above sea level anyone got a idea to get me close on the main Quote Link to comment Share on other sites More sharing options...
rjdgriff Posted October 13, 2012 Report Share Posted October 13, 2012 What pipes? Airbox? You should post all the bikes mods Quote Link to comment Share on other sites More sharing options...
Nightmare Posted October 13, 2012 Report Share Posted October 13, 2012 330 seems big. Start with 280 or 290's Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted October 13, 2012 Author Report Share Posted October 13, 2012 Sorry guys t6 pipes reeds mx ported cylinders with stock carbs and pods Quote Link to comment Share on other sites More sharing options...
BelleauCarl Posted October 14, 2012 Report Share Posted October 14, 2012 I run mx hardcore ported cylinder from hjr racing and my jetting are 330 main 27.5 pilot third clip needle and air screw at one turn and a half. Im at 600ft elevation Hope it help Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted October 14, 2012 Author Report Share Posted October 14, 2012 I run mx hardcore ported cylinder from hjr racing and my jetting are 330 main 27.5 pilot third clip needle and air screw at one turn and a half. Im at 600ft elevation Hope it help ya that helps but it has to be warm down there so i think i should go up to like 340 or so? being its like 40 degrees here and im 1185 elevation Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted October 14, 2012 Author Report Share Posted October 14, 2012 I run mx hardcore ported cylinder from hjr racing and my jetting are 330 main 27.5 pilot third clip needle and air screw at one turn and a half. Im at 600ft elevation Hope it help ya that helps but it has to be warm down there so i think i should go up to like 340 or so? being its like 40 degrees here and im 1185 elevation Quote Link to comment Share on other sites More sharing options...
BelleauCarl Posted October 14, 2012 Report Share Posted October 14, 2012 Im in quebec canada its 40-45 here too. Maybe your probleme is on pilot or needle circuit? What exactly dont seem righf? Sent from my SGH-I997 using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted October 14, 2012 Author Report Share Posted October 14, 2012 Im in quebec canada its 40-45 here too. Maybe your probleme is on pilot or needle circuit? What exactly dont seem righf? Sent from my SGH-I997 using Tapatalk 2 well how does the elvation work if for like me im higher do i need to be more rich then u? or what idk guess im scared of really ripping on it sense i spend the money on it Quote Link to comment Share on other sites More sharing options...
BelleauCarl Posted October 14, 2012 Report Share Posted October 14, 2012 Your are higher in elevation so, less baro pressure and less air in engine so your need go down on jetting. Too rich of a main should make problem only on wide open throttle Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted October 14, 2012 Author Report Share Posted October 14, 2012 Your are higher in elevation so, less baro pressure and less air in engine so your need go down on jetting. Too rich of a main should make problem only on wide open throttle oook it was pretty shitty out lastnight so guess we will see today i just dont wanna blow it up Quote Link to comment Share on other sites More sharing options...
BelleauCarl Posted October 14, 2012 Report Share Posted October 14, 2012 Do a plug chop its the only way your sure its right Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted October 14, 2012 Author Report Share Posted October 14, 2012 Ya ill have to I rode it today for awhile hr or so seemed to run ok the plugs before I think looked lean but I only went around yard slow Today I went for a ride and rip for a hr so can't be to lean if it is at all ik it's rich on bottom took the plugs out when I got home and there pretty nice brown Quote Link to comment Share on other sites More sharing options...
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