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jak1389
06-26-2005, 05:11 PM
where is the clip in the carb everyone talks about when dealing with jetting? how does a 160 main 40 pilot sound for the mods in sig and im getting a full hmf pipe. my elevation a approx 2000ft. i want my jetting to be pretty close while oim breaking in the motor. any pics would be apreciated. thanks

250ex rida
06-26-2005, 08:50 PM
i think you will need a bigger mj, dont quote me to this but i think the jet will be to small, and are you running with or without lid?

jak1389
06-27-2005, 05:56 AM
i am running with the lid on.

jak1389
06-27-2005, 12:17 PM
i found out it is the needle clip. where is it in the carb and how do i adjust it?

06-27-2005, 12:23 PM
it is on the top, i dont have as much experance with quad carbs as i do with dirt bike carbs but you should be able to take the very top of the carb offf and see the needle somwhere, the quad carbs are a little differnt but you get the idea

jak1389
06-27-2005, 12:27 PM
can someone post some pics please. and which setting for the needle clip is richer and which way is more lean?

DH400EX
06-27-2005, 12:47 PM
http://www.exriders.com/vbb/showthread.php?s=&threadid=19832&perpage=15&pagenumber=1
...shows everything.

jak1389
06-27-2005, 01:00 PM
great info!! now just what setting makes it more lean and more rich.

2001400exrider
06-27-2005, 01:02 PM
yea ull need a bigger main like 170-175........

jak1389
06-27-2005, 01:08 PM
why do you say that?

400exstud
06-29-2005, 09:36 PM
Your quite a bit lean. I have the HMF full system and am running a 180 main.

EDIT!!!: NOW THAT I AM FINALLY DIALING IN MY BIKE I AM RUNNING A 160 (WITH THE QUIET CORE AND AIRBOX LID ON).

I went from a 180 to a 172, 168, and then 160. With the airbox lid on and the core in I could only do about 5 miles on a spark plug (it was THAT rich).

I may be 1 size to lean but it runs great!

jak1389
06-30-2005, 07:59 AM
you are also at a different place than i am so the conditions will change. the hmf i bought from 300exrida, should be here friday (i hope), and i asked him if i could trade him my stock jets for his larger ones sicne he doesnt live that far from me and had alot fo the same mods, and he's just giving me the entire carb. so i think it will be set pretty close if not perfect.

2001300exguy
06-30-2005, 11:05 AM
i had a 162main with full t-4, k&n, and aluminum airbox nd it was jetted perfectly

jak1389
06-30-2005, 11:59 AM
ok nobody answer my origanl question. which setting makes the jetting more lean or rich on the needle clip. like up lean or rich or the lowest one is rich or lean. please help.

2004exrider
06-30-2005, 08:40 PM
drop needle down to make it rich, raise it to lean it out

jak1389
07-01-2005, 07:08 AM
thanks 2004exrider

400exstud
07-10-2005, 09:01 PM
Does anybody run with the needle jet at stock for their full HMF system (airbox lid on and quiet core in) because I made mine one richer and it is too rich!