416 Jetting in FLA.

[BIGRED400]

Hey guys I need jetting help to get"dialed in",I was wondering if you could help me out with my jetting. I have a 416 JE 11:1 , HotCams Stage 2, K&N w/Outerwears,E-Series w/18 Disc in Fla.Currently running 170 Main(Dynojet), stock pilot-going to 42 pilot when it arrives,2-1/2 turns out on screw in Fla.---What do you think??? Help dial me in???

From theTop Down

2002 400EX
K&N Airfliter W/Outerwears
170 Dynojet Main
HotCams Stage 2
JE 416 11:1 coated w/ http://www.swaintech.com/4whl.html
White Bro's E-Series w/18 Disc
Renthal Bars

Go up 1 size on the main and be done with it. It might actually run on stock jetting.:)

[cals400ex]

just to clarify, he means one size over stock, not one size bigger than your 170. i THINK the dj146 is about the same size as the stock keihin 148. i don't know but the next size up may be a 155 in the kit. i agree. i would try that and see how it runs. 42 pilot and 2.5 turns seems like a good starting place.

[Holeshot36]

I'm running 42pilot,2.75 turns out, and 165 main jet(not dynojet) and have similar setup.

[JP400ex]

Hey, I could use some help jetting my 416 too, rather than start a new thread i figured i'd just jump in on this one.

Im located right on the ohio/michigan line and its pretty cold here. I have a 416ex w/ 10:1 weisco piston, WebCam, race ported, UNI air filter w/ box cover off, and FMF titanium 4 Pipe and silencer. Im running the fmf with the silent core and spark arrestor. The guy i got it from had a 200 kehin main jet in it and the stock pilot and it was hesitating real bad when i would nail the throttle. So i put it down to a 185 and it still does it a little but not much. When i drop it down to a 175 it pops a whole bunch when i hit the throttle and let off, kind of like a bunch of backfires. So i am assuming the 175 is to lean (i know everybody says to only go with 165 or so)

I just cant seem to get this thing dialed in right, I want to be able to pop the clutch and nail the gas and have it take off with out sounding like its hesitating but everytime i lower the jet size beyond the 185 it pops to much.