Jetting Database
  • User avatar
    crfsonly
    Owner
    Posts: 9651
    Joined: Thu Apr 01, 2004 3:45 pm

    Jetting Database

    by crfsonly » Mon Apr 09, 2007 5:17 am

    Please keep other info out of this thread. Only answer the questions. Copy and paste to keep format uniform.


    Year:
    Elevation:
    Temperature Range:
    Backfire Screen:
    Air Filter:
    Pilot Jet:
    Main Jet:
    Needle:
    Needle Clip Position:
    Fuel Screw Type:
    Fuel Screw Setting:
    AP Modified:
    Leak Jet:
    AP Cover:
    Exhaust Type:
    Exhaust Modified:
    Last edited by crfsonly on Thu Jul 14, 2011 3:03 pm, edited 2 times in total.
    OEM Parts for Honda - Yamaha - Suzuki - Kawasaki: http://yeltrik.com
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  • User avatar
    SoCal450R
    Posts: 80
    Joined: Wed Apr 18, 2007 2:10 pm

    2006 450R

    by SoCal450R » Thu May 31, 2007 11:53 am

    Year: 2006
    Elevation: 0-4000
    Temperature Range: 50-100
    Backfire Screen: ProMoto screen and tip
    Air Filter: Stock
    Pilot Jet: 45
    Main Jet: 172
    Needle: JD red needle
    Needle Clip Position: 5th position
    Fuel Screw Type: White Brother
    Fuel Screw Setting: 2 3/4
    AP Modified:
    Leak Jet:
    AP Cover:
    Exhaust Type: stock
    Exhaust Modified: ProMoto Spark Arrestor
    2006 CRF 450R:
    -WB Fuel screw
    -JDJet kit 180 main, 45 pilot, red clip on fifth position, fuel screw 1 1/4 turns out.
    -Promoto Spark Arrestor
    -Flatland Rad. Guards
  • User avatar
    BB450
    Posts: 69
    Joined: Wed Jul 12, 2006 9:37 am

    by BB450 » Mon Jun 18, 2007 7:56 am

    Year:
    Elevation:
    Temperature Range: 90-105 :shock:
    Backfire Screen: no
    Air Filter:K&N X stream
    Pilot Jet: unknown
    Main Jet: 170
    Needle: stock
    Needle Clip Position: 3rd from bottom
    Fuel Screw Type: Tusk
    Fuel Screw Setting:1 and 3/4 out
    AP Modified: yes, turned in and safety wired
    Leak Jet: stock
    AP Cover: stock
    Exhaust Type: FMF Ti 4
    Exhaust Modified: no
  • nedirtbikr
    Posts: 1261
    Joined: Thu Jan 06, 2005 12:28 pm

    by nedirtbikr » Mon Jun 18, 2007 11:58 am

    Year: 2006
    Elevation: 1000' - 2500'
    Temperature Range: 45 - 100
    Backfire Screen: Removed
    Air Filter: TwinAir PowerFlow
    Pilot Jet: 48
    Main Jet: 180
    Needle: JD Red
    Needle Clip Position: 4
    Fuel Screw Type: CRFsOnly
    Fuel Screw Setting: 1 1/8 out
    AP Modified: Yes (O-Ring/Redbeard mod)
    Leak Jet: Stock
    AP Cover: Stock
    Exhaust Type: Stock
    Exhaust Modified: No
    2006 CRF450R (For Sale)
    A-47753 (Jumpin' dirt and clouds!)
    Proud member of the Hamster Nation!
  • fundy
    Posts: 5
    Joined: Tue Dec 25, 2007 10:10 am

    by fundy » Tue Dec 25, 2007 10:15 am

    Please keep other info out of this thread. Only answer the questions. Copy and paste to keep format uniform.


    Year:
    Elevation:
    Temperature Range: 40-70f
    Backfire Screen: no
    Air Filter: dual foam
    Pilot Jet: dont know
    Main Jet: dont know
    Needle: dont know
    Needle Clip Position: dont know
    Fuel Screw Type: white bros
    Fuel Screw Setting: 1 7/8 out
    AP Modified:
    Leak Jet: dont know
    AP Cover:
    Exhaust Type: chm
    Exhaust Modified: yes
    _________________
  • User avatar
    krisrtch
    Posts: 1505
    Joined: Thu Jan 04, 2007 5:46 pm

    by krisrtch » Thu Feb 07, 2008 6:37 pm

    Year: 2008
    Elevation: 1200-1300 ASL
    Temperature Range: 40-100
    Backfire Screen: No
    Air Filter: Twin Air
    Pilot Jet: 42
    Main Jet: 170
    Needle: Stock
    Needle Clip Position: 3rd
    Fuel Screw Type: Pro-Action
    Fuel Screw Setting: 1.75 out
    AP Modified: no
    Leak Jet: stock
    AP Cover: stock
    Exhaust Type: FMF
    Exhaust Modified:Mega bomb and 4.1 silencer
    Last edited by krisrtch on Thu Nov 06, 2008 9:47 am, edited 4 times in total.
    There is plenty of time to sleep when your dead....... Ride Hard!!!
    2012 CRF450R
    2010 CRF250R
    2006 CR85R
    2012 CRF50F
  • hrsey71
    Posts: 9
    Joined: Fri Feb 08, 2008 7:35 am

    by hrsey71 » Fri Feb 08, 2008 7:40 am

    Year: 2006
    Elevation: 0-70
    Temperature Range: 40-80
    Backfire Screen: stock
    Air Filter: stock
    Pilot Jet: stock
    Main Jet: stock
    Needle: stock
    Needle Clip Position: stock
    Fuel Screw Type: stock
    Fuel Screw Setting: stock
    AP Modified: stock
    Leak Jet: stock
    AP Cover: stock
    Exhaust Type: FMF
    Exhaust Modified: power bomb and factory 4 blue
  • jason4410
    Posts: 5
    Joined: Sun Mar 16, 2008 2:57 pm

    by jason4410 » Mon Mar 31, 2008 6:32 pm

    please help HAVE A STAGE 3 CAM (HOT CAMS)

    Year: 2007
    Elevation: 2500 +
    Temperature Range:30 deg- 110
    Backfire Screen: yes
    Air Filter: twin air
    Pilot Jet:stock
    Main Jet: stock
    Needle: stock
    Needle Clip Position: stock
    Fuel Screw Type: msr
    Fuel Screw Setting: 2 out
    AP Modified: no
    Leak Jet: stock
    AP Cover: stock
    Exhaust Type: stock
    Exhaust Modified: no

    PLEASE HELP
    _________________
  • 449.4R
    Posts: 48
    Joined: Sun Jan 28, 2007 11:26 am

    by 449.4R » Sun May 18, 2008 2:26 pm

    Year: 03
    Elevation: 2000+
    Temperature Range: 60's - 100's
    Backfire Screen: Gone
    Air Filter: Twin Air
    Pilot Jet: 45
    Main Jet: 175
    Needle: JD Red
    Needle Clip Position: 5
    Fuel Screw Type: Stock
    Fuel Screw Setting: 2
    AP Modified: Thick O Ring Mod
    Leak Jet: Stock
    AP Cover: No
    Exhaust Type: Yoshimura
    Last edited by 449.4R on Fri Oct 30, 2009 5:28 pm, edited 2 times in total.
  • 4stroker
    Posts: 11
    Joined: Thu Jan 12, 2006 12:51 pm

    by 4stroker » Tue Dec 30, 2008 12:20 pm

    450R 7

    Year: 2007
    Elevation: 35 meter
    Temperature Range: Spring
    Backfire Screen:
    Air Filter: Twin Air Powerflow
    Pilot Jet: 45
    Main Jet: 175
    Needle: stock
    Needle Clip Position: 3.
    Fuel Screw Type: R&D
    Fuel Screw Setting: 1
    AP Modified: stock
    Leak Jet: stock
    AP Cover:
    Exhaust Type: Akrapovic evolution complete (long pipe)
    Exhaust Modified: with 94db insert
  • User avatar
    DarkCRF
    Posts: 289
    Joined: Thu Sep 23, 2010 5:24 am

    by DarkCRF » Fri Oct 08, 2010 10:12 am

    Year: 2005
    Elevation: 400 to 1500 ft
    Temperature Range: -10C to 30 Celsius
    Backfire Screen: Removed
    Air Filter: UNI
    Pilot Jet: 42
    Main Jet: 185
    Needle: JD red
    Needle Clip Position: 4th from top
    Fuel Screw Type: Moose racing
    Fuel Screw Setting: 2 1/4 out
    AP Modified: O-ring and 2.7mm rivet
    Leak Jet: 55
    AP Cover: OEM
    Exhaust Type: Bill's pipe slip on
  • AngrySlinky
    Posts: 26
    Joined: Tue Oct 11, 2011 2:48 pm

    2006 Honda CRF 450

    by AngrySlinky » Tue Oct 11, 2011 6:27 pm

    Year:2006
    Elevation:1000-3000
    Temperature Range:50-90
    Backfire Screen: Removed
    Air Filter: Twin Air
    Pilot Jet: 42
    Main Jet: 180
    Needle: Stock/oem
    Needle Clip Position: 4th from the top
    Fuel Screw Type: MSR Mixture Screw
    Fuel Screw Setting: 2-1/4
    AP Modified: Yes full mod
    Leak Jet: 55
    AP Cover: stock
    Exhaust Type: Full Bills
    Exhaust Modified: No
    Air Box Mod: Yes
  • User avatar
    mprentice
    Posts: 126
    Joined: Fri Jun 17, 2005 9:08 pm

    by mprentice » Sun Nov 20, 2011 4:41 pm

    Year:2005
    Elevation:0-100
    Temperature Range:50-90
    Backfire Screen: YES
    Air Filter: Twin Air
    Pilot Jet: 45
    Main Jet: 170
    Needle: NGGQ
    Needle Clip Position: 4th from the top
    Fuel Screw Type: Ride Engineering from CRFsOnly
    Fuel Screw Setting: 1 7/8
    AP Modified: stock
    Leak Jet: stock
    Exhaust Type: Full FMF Factory 4 w/power bomb
    Exhaust Modified: YES
    '05 CRF450R, '12 CRF250R, '09 Suzuki DRZ400SM
  • User avatar
    2004crf250r
    Posts: 2
    Joined: Tue Feb 14, 2012 12:19 pm

    by 2004crf250r » Tue Feb 28, 2012 6:37 pm

    Year: 2004 CRF250R
    Elevation: 400ft - 1800ft
    Temperature Range: 50f. - 85f.
    Backfire Screen: stock
    Air Filter: UNI
    Pilot Jet: 42
    Main Jet: 172
    Needle: stock
    Needle Clip Position: 5th from top
    Fuel Screw Type: R&D
    Fuel Screw Setting: 2 turns out
    AP Modified: stock
    Leak Jet: .
    AP Cover: stock
    Exhaust Type: stock
    Exhaust Modified: no

    boseyen quickshot
    hot cams stage 1
  • der_berger
    Posts: 82
    Joined: Thu Dec 06, 2012 9:20 am

    by der_berger » Fri Dec 21, 2012 2:04 pm

    Year:
    Elevation: below sea level-4000
    Temperature Range: 60-110
    Backfire Screen:
    Air Filter: uni
    Pilot Jet: 45
    Main Jet: 175
    Needle: jd red needle
    Needle Clip Position: 5th position
    Fuel Screw Type: stock
    Fuel Screw Setting: 2-3/4
    AP Modified:
    Leak Jet:
    AP Cover:
    Exhaust Type: fmf power bomb header and fmf ti powercore muffler
    Exhaust Modified:

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