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unclemd

WR450F JD Jetting

2 posts in this topic

Bought the bike second hand all free mods are complete haven't looked in the carb yet but found a piece of paper with what jetting was installed(listed below). My exhaust is arriving next week going to install it then LEXX MXe slip on with a Pro Circuit header. Hot Cams will be installed in the spring. I would like to be able to jet it now so when the spring comes and i put the cams in i don't have to rejet again. My JD jet kit should be here next week as well. What jetting do you guys recommend based on the jetting in the bike now? Will i have to rejet when i put the cams in?

Year: 2007

Model (400 - 426 - 450): 450

Cam Timing (WR/YZ): WR

Main jet: 168

Pilot Jet: 48

PAJ: Unknown

Leak Jet: 45

Starter Jet: Unknown

Fuel screw (turns out): GYTR not sure about the turns

Needle Model/Clip position: 4th AIS kit needle

Grey Wire Mod (Y/N): Y

TPS Connected (Y/N): Y

Airbox Snorkel/Lid (on or off): Snorkel Off

AIS Removed (Y/N): Y

Airfilter Brand: GYTR

Exhaust Brand: Stock Pea Shooter removed

Average Altitude: 0-800 feet

Average Temperature: 30 - 90

Average Humidity: 80%

Degree of Satisfaction (0-10): 8 Seems to run well never tried it stock to compare

Additional Mods/Comments: None

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Wait until you get the JD kit. It comes with very detailed instructions on how, and what, to install. I can't remember if the cam's come with any jetting info....wait and see...

Also, when you get the kit, if you have any questions at all, simply call JD up and ask.

Either way, I would not jet to accommodate the cam's, until the cam's go in.

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