Need a copy for JD jetting instructions


3 replies to this topic
  • wilb67

Posted October 12, 2009 - 01:05 PM

#1

Anyone have a copy of the jetting instructions for the JD jetting kit for a 07 WR 450. I have the kit but no instructions for elevation and which needle and jets to use.
Or let me know what jets and needle (red or blue plus clip position) to use for 700' elevation,75 deg. air temp.,ais removed,gray wire cut,air box snorkel removed,complete baffel removed from stock exhaust,O ring mod., ZT fuel screw.
Thanks,Will.

  • wartsnuff

Posted October 12, 2009 - 04:02 PM

#2

Anyone have a copy of the jetting instructions for the JD jetting kit for a 07 WR 450. I have the kit but no instructions for elevation and which needle and jets to use.
Or let me know what jets and needle (red or blue plus clip position) to use for 700' elevation,75 deg. air temp.,ais removed,gray wire cut,air box snorkel removed,complete baffel removed from stock exhaust,O ring mod., ZT fuel screw.
Thanks,Will.



Hey Man,

i believe if go to JD jetting web site you can download them.

or just e-mail him, i sure they will send you the pdf

cheers
Warts

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • SXP

Posted October 12, 2009 - 05:06 PM

#3

From the Sticky. IMO, one of the best pieces of info on this forum....

Here is what works for me and you guys can use it as a starting point to jet your WR450 bikes only! :bonk:

(Note: do not use these for WR426 or WR400 due to carb differences!) :bonk:

This recommendation requires air box flow mods and an open stock or aftermarket pipe and ACV circuit intact. :bonk:

Elevation 0 to 4,000. feet

30 to 45 degrees: 172 main, JD Blue #5, 48 Pilot, 2.0 turns, 75 starter jet, #0 leak jet
45 to 60 degrees: 170 main, JD Blue #4, 48 Pilot, 1.75 turns, 72 starter jet, #0 leak jet
60 to 75 degrees: 168 main, JD Blue #3 or JD Red #5, 48 Pilot, 1.5 turns, 70 starter jet, #40 leak jet
75 to 90 degrees: 165 main, JD Red #5, 48 Pilot, 1.25 turns, 68 starter jet, #50 leak jet
90 degrees plus: 160 main, JD Red #4, 45 Pilot, 2.0 turns, 65 starter jet, #60 leak jet

Elevation 4,000 to 8,000 feet:

30 to 45 degrees: 170 main, JD Blue #4, 48 Pilot, 1.75 turns, 72 starter jet, #0 leak jet
45 to 60 degrees: 168 main, JD Blue #3, 48 Pilot, 1.5 turns, 70 starter jet, #40 leak jet
60 to 75 degrees: 165 main, JD Red #5, 48 Pilot, 1.25 turns, 68 starter jet, #40 leak jet
75 to 90 degrees: 165 main, JD Red #5, 45 Pilot, 2.0 turns, 65 starter jet, #50 leak jet
90 degrees plus: 160 main, JD Red #4, 45 Pilot, 1.75 turns, 65 starter jet, #60 leak jet


Elevation 8,000 to 11,000 feet: ( Note you will loose a lot of power due to altitude but your bike will idle and not foul plugs!)

45 to 60 degrees: 165 main, JD Red #5, 48 Pilot, 1.25 turns, 70 starter jet, #40 leak jet
60 to 75 degrees: 160 main, JD Red #4 , 45 Pilot, 1.75 turns, 68 starter jet, #50 leak jet
75 to 90 degrees: 158 main, JD Red #3, 45 Pilot, 1.5 turns, 65 starter jet, #60 leak jet



  • PBDBLUE

Posted October 12, 2009 - 05:52 PM

#4

from the JD sheet:

red #4
168 Main
48 pilot




 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.