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View Full Version : 400ex Jetting Question (152 main)



tahoe97
05-27-2003, 03:17 PM
i am in the process of jeting my carb and i moved the needle to the 4th notch am putting in a 40 pilot jet with the screw about 2 3/4 turns out and going to a 152 pilot jet.. I have stock air filter with holes in airbox and pro circuit t-4 silencer.. Is a 152 big enuff just right or too small??

trailburner
05-27-2003, 04:04 PM
you mean a 152 main jet wright????if so that should be good, with your mods a couple sizes bigger [than stock] with the main should be fine...

tahoe97
05-27-2003, 05:55 PM
Yep.. I mean 152 main.... (i type like old people scr**)....And another question...
With the mods i have do you think it will do ok with the needle on the forth clip??

cals400ex
05-27-2003, 07:32 PM
moving the clip down one position (needle up one) should be just fine for your mods. i believe honda jetted the bike a little lean from the factory due to emissions. i run the needle in the 4th position and i have a factory pipe with no air box lid. doing this cures your bike's misses when it is cold.

trxex
05-28-2003, 12:26 PM
just set the m/f on fire