Northern Oklahoma: Approx. 700 ft.
2007 YFZ 450 SE
Curtis Sparks X6 pipe
UNI air filter w/o airbox lid
Air temp around 74 degrees
165 main
45 pilot
4th clip on NCVQ needle
All the way in and 2.5 out on the screw
:cool:
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Northern Oklahoma: Approx. 700 ft.
2007 YFZ 450 SE
Curtis Sparks X6 pipe
UNI air filter w/o airbox lid
Air temp around 74 degrees
165 main
45 pilot
4th clip on NCVQ needle
All the way in and 2.5 out on the screw
:cool:
Taking the air box lid off was a must after I changed the main jet. It did'nt run right otherwise. The combination of the changes gave me noticeably more on the low end.
Ported head
web +5 cams
WR crank
CP 13:1 piston
Stock airfilter. half a airbox. back is cut off.And screen removed
C12 fuel
Sparks bigcore exhaust
In nj not sure elevation.
180 main
48 pilot
Stock needle 5th clip down
2 1/2 turns out
Professionally dynoed where these were the best settings.
I just bought a 07 se, elevation 2000- 3000, temp +10 deg, main 175, pilot 42, no lid, cam mod!!, drilled out exhaust, ncvq 4th clip from bottom, 2 1/4 turn on fuel screw. I still have the 06. blown motor. any body with a 04- 05 -06 do the oil mod NOW!!! or your looking at lots of $$$$ for parts. crank seized not enough oil to the crank. :grr: :mad:
2004 yfz
elevation : 2800 feet
mods : alba full pipe, velocity air filter w/o air lid
main 170
pilot 45
stock needle 5th clip
fuel screw 2.5 turns out
DASA fullsystem
Complete racing Head
ProDesign with lid off (Foam)
DynoJet kit - 142 main & 48 pilot
Elevation 500ft
Average Temp - 77
HMF sport series slipon and K&N air filter with the airbox lid on
928FT elevation
165 main
48 pilot
1 turn out on the fuel screw
3rd needle clip
93 valero fuel
runs really good power throught the entire rpm range and doesnt backfire
Im in Seattle Wa so my guess is that its sea level-1000ft.
Ron woods full exhaust
ron woods intake system with k&n no airbox
Pump gas
jetting:
175 main
48 pilot
5 postition on needle (from top)
1 1/2 turns out on fuel screw
Seems rich but rips, and never had to chang a spark plug yet.
new here but want to put my 2 cents in,06 yfz 450 bill ballance,white bros slip on,175 main,48 pilot,stock needle,adjustable mixture screw,in omaha ne.this thing runs great.neck and neck with a buddies ktm 525
i have a 06 yfz 450 with the toomey slip on, and k&n air filter no lid. the slip on came with a 175 main jet but it just wasnt right. when you stab the throttle it chokes the quad out. and my choke switch doesnt work, when you pull it out it kills the bike.
i just bought a gytr jet kit for it but im not sure witch jets to put in and what to set the needle as... any suggestions?