450R carb questions, size jets

[tanner24]

If anybody out there has a 450r carb on their 400, with these similar mods....can you help me out?? I have full big gun pipe, WB cdi, k&n, no lid, hot cam stg 2. when converting over to 450r carb, what size jet and what notch should the needle be set at. I ride mostly in the dunes. Thanks for the help.

[EXDUNER127]

Dont worry about it Tanner becuase you are never going to be as fast as me, haha! When did you get a 450r carb you *****?

[turfrooster]

Ive got a 450r carb w/ similar mods...mine runs good w/ a 200 main jet but im not sure about the other jets

[wes350x]

I just installed mine a couple of weeks ago and had a h-ll of a time getting that jettin right. I have now a 45 pilot, 165 dj main, 3rd notch on needle, and air screw 2 1/2 turns out. I find its running rich a lil so Im gonna try a 42 pilot this week.

[44oEX]

I have a 170 and 45 with stock clip position on the needle

[khen]

I'm running a 168 main, 48 pilot, 2 1/2 turns on the air screw and 3rd notch on the needle. I'm showing a bit rich in all areas on my A/F gauge.

[EXDUNER127]

you guys are always going to be jetting that hting because you are letting in way to much air then your bike needs, that carb is too big, just look the fcr's biggest carb for the 400ex is a 41, and that carb is a 42, you might be alright with a fully built 440 and up!