jetting help new carbs

[bansheecaptain]

so i did some up grades this winter and went to single carb to now dual 28's my mods are plus4 timing , mild port , fmf pipes , noss head 20cc domes , vforce reeds new stator. im at 1100ft above sea level . so my problem is i was at 170 main jet size and it was reall boggy at mid throttle and at the very top end one side would just cut out not pinging or anything just seem to cut out , so the needle was at second from the top so i couldnt really lean that out more and it was really boggy , and the plugs looked lean . so i went up to 172 and even worse so i remember hearing once if its to rictch the plugs will look lean . so i started going down im at 160 now top end problem is still there but know were as bad , and the plug looks alittle are better , so just asking should i keep going lower on main or is there another problem i should be worried about , plus what are other people running for jetting with similar mods .

[Sweet1]

what temp are you riding in? im at sea level with a 160 main, this is at about 55-65 deg. what size motor,domes,ect. i would say try a 155 158 and see if it gets better, put new plugs in and check them. once you get it to run clean on the top end you may want to start with the needle in the middle clip and tune it again as well.

[Sweet1]

nm i see 20cc dome, i assume sc, if your around the same temp try a 155-152 and see if it cleans out,

Edited July 24, 2011 by Sweet1

[421alkybanshee]

try 160 mains and 50 pilots, clip in middle. That helped me alot