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Thread: installed the 450R carb and WOW.....!!!

  1. #1
    Join Date
    Apr 2002
    Location
    North LAs Vegas , NV
    Posts
    31,685

    installed the 450R carb and WOW.....!!!

    what A nice enhancement..... The throddle responsose is gonna be VERY impressive!! Im not sure what all the hype was about having to make modifications, but we were still able to keep the choke AND the Hot start can be nicely tucked away
    I was a little on the fat side with my old Carb,Im now lean, ditched the Air box, I think I may have to change my gearing in fears I may wheelie over It sounds soooooo much betterthan my stock Carb, I now know that my stocker was trashed for some time now after hearing how this sounds... I cant wait to try it at the track!!! Anyone that can get there hands on one............. DO IT!!
    http://qjsimaging.com/

    -2002 Duncan 440ex-
    Yoshimura full system,JE piston(12:1),Stage 2 Hot Cam,Port,polish, +3 Chrome Burgards AArms ,Elka Suspension -Triple rate front and Rear,GT Thunder Rev Box,,Pro Armour Nerfs,Burgard beadlock rears,Orange Fullbore,Chrome Tank cover,Candy Purple PC,Blingstar Dana Creech Bumper

    2007 Suzuki LTR450
    FOX Shocks, JB Racing A-Arms, Silver Maier plastic, Quad Tech Seat Cover, BRM Offroad race numbers

    2008 Raptor 250 BUILD IN PROGRESS!
    Thank you 2010 Sponsors
    and Contributers!!

    Teixeira Tech,DWT, Fasstco Co., Maxima oils, Scott USA, Renthal, ODI, FLY Racing,Western Powersports, Promoto Billet, FOX Shocks,Maier Plastics,ODI,Rath Racing,ATV4-play
    ASV,Motoworks,QuadTech,Streamline,
    RockyMountain ATV,Powermadd,Les Schwab,QJ's Imaging

  2. #2
    Join Date
    Mar 2001
    Location
    Lou-A-Vull, KY
    Posts
    2,024
    How was fit and finish?? What did you have to do to get it to work.

    Did I read it correctly that you DITCHED the airbox?? Meaning the filter is bolted directly to the carb??


    Some say the 450R shocks are a must to put on a 400ex, even though the stroke is wrong, grinding has to be done, etc, etc.
    2001 Honda 416SS with a powerbong


  3. #3
    Join Date
    Jun 2001
    Location
    Indiana
    Posts
    7,705
    Yes let us know about this. I am with Rico, I would be running the airbox for sure, so how did that mount up?
    Thanks for the Support: Maier, Moto-Xperts, Rekluse, Teixeira Tech, Fox Racing Shox, BK Performance, DWT, Rath Racing, Quadtech, Streamline Brakes, Precision Racing Products, PowerMadd, Spider Grips, ASV Inventions, IMS Products, CV4, UNI.

  4. #4
    Join Date
    Jul 2003
    Location
    UT
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    697
    That's good news QuadJunkies!!! I just got mine in yesterday, but I'm still waiting for the 450R cable from servicehonda. I have a few questions:

    1- What pilot/main jets did you use in the 450R carb and what did you have on your old one(for reference).

    2- Did you use the 400EX fuel hose, or did you use the 450R's?

    3- Did you have to modify the choke so it would clear the fuel petcock?
    2004 450R - 13:1 JE piston, HRC Cam, Yoshi full exhaust, ESR Intake, Hinson Clutch Basket, GT Thunder dual rate front revalves, Burgard +2+1 arms, GT Thunder rear linkage & rebuilt shock, G-Force +4 axle, W.E.R. Stabilizer, Tokyo Mods CDI, RAZR MX tires, Tusk nerfs, MSR bars, Tusk tether.
    2003 406EX - 10:1 Wiseco, HotCam Stg 3, Port & Polish, 450R 42mm carb, Stock shorty straight through exhaust, Powerbomb, K&N, FST cooler, Arens nerfs, Zaps CDI, 14T sprocket, VW Stabilizer, Magura Hydraulic clutch, Holeshot XC's(wifes)
    1990 Yamaha Blaster(sons)
    1986 Honda 200SX(daughers)
    2004 Tomahawk 110(sons)

  5. #5
    Join Date
    Dec 2004
    Location
    Nevada
    Posts
    191

    450r carb

    I used the stock pilot jet and a 185 main jet, 4th notch on the needle, air/fuel screw 3 1/2 turns out. On the stock carb I ran the same set-up except for less turns on the air/fuel screw.
    I used the fuel hose from the 450R.
    The yellow plastic choke handle will not clear the petcock. My quad starts easily by just pumping the throttle 2 times before pushing the starter.
    The hot start is not really needed, although I use it at times.

    The carb works great on my track.

  6. #6
    Join Date
    Apr 2002
    Location
    North LAs Vegas , NV
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    31,685
    would you like some pics and Ill sit down with Troy and give more details tonight on it if you like ?

    Yes, I thought Troy said he had to ditch the airbox, but Ill dbl. check on that
    Fit and finish was VERY simple,its on good and tight,I still have the choke evenand the hot start is going to just be ziptied out of site.... now its all about just getting the jetting and pilot dialed in....
    http://qjsimaging.com/

    -2002 Duncan 440ex-
    Yoshimura full system,JE piston(12:1),Stage 2 Hot Cam,Port,polish, +3 Chrome Burgards AArms ,Elka Suspension -Triple rate front and Rear,GT Thunder Rev Box,,Pro Armour Nerfs,Burgard beadlock rears,Orange Fullbore,Chrome Tank cover,Candy Purple PC,Blingstar Dana Creech Bumper

    2007 Suzuki LTR450
    FOX Shocks, JB Racing A-Arms, Silver Maier plastic, Quad Tech Seat Cover, BRM Offroad race numbers

    2008 Raptor 250 BUILD IN PROGRESS!
    Thank you 2010 Sponsors
    and Contributers!!

    Teixeira Tech,DWT, Fasstco Co., Maxima oils, Scott USA, Renthal, ODI, FLY Racing,Western Powersports, Promoto Billet, FOX Shocks,Maier Plastics,ODI,Rath Racing,ATV4-play
    ASV,Motoworks,QuadTech,Streamline,
    RockyMountain ATV,Powermadd,Les Schwab,QJ's Imaging

  7. #7
    Join Date
    Apr 2002
    Location
    North LAs Vegas , NV
    Posts
    31,685

    Re: 450r carb

    Originally posted by yfz450admirer
    I used the stock pilot jet and a 185 main jet, 4th notch on the needle, air/fuel screw 3 1/2 turns out. On the stock carb I ran the same set-up except for less turns on the air/fuel screw.
    I used the fuel hose from the 450R.
    The yellow plastic choke handle will not clear the petcock. My quad starts easily by just pumping the throttle 2 times before pushing the starter.
    The hot start is not really needed, although I use it at times.

    The carb works great on my track.
    did you completley remove your choke or just cut the tab dowbn a bit?? Thts what he done to mine Als, what Elev. and temps are you at right now??? Im at 2800 and its Averaging this wk in the 40's, we race in the 20's
    http://qjsimaging.com/

    -2002 Duncan 440ex-
    Yoshimura full system,JE piston(12:1),Stage 2 Hot Cam,Port,polish, +3 Chrome Burgards AArms ,Elka Suspension -Triple rate front and Rear,GT Thunder Rev Box,,Pro Armour Nerfs,Burgard beadlock rears,Orange Fullbore,Chrome Tank cover,Candy Purple PC,Blingstar Dana Creech Bumper

    2007 Suzuki LTR450
    FOX Shocks, JB Racing A-Arms, Silver Maier plastic, Quad Tech Seat Cover, BRM Offroad race numbers

    2008 Raptor 250 BUILD IN PROGRESS!
    Thank you 2010 Sponsors
    and Contributers!!

    Teixeira Tech,DWT, Fasstco Co., Maxima oils, Scott USA, Renthal, ODI, FLY Racing,Western Powersports, Promoto Billet, FOX Shocks,Maier Plastics,ODI,Rath Racing,ATV4-play
    ASV,Motoworks,QuadTech,Streamline,
    RockyMountain ATV,Powermadd,Les Schwab,QJ's Imaging

  8. #8
    Join Date
    May 2003
    Location
    North Pole, Alaska
    Posts
    3,982
    I want to see some pictures. Sounds like a good mod that I might have to look into....
    Nick Reid

    Special Thanks Goes To C&D Racing!

  9. #9
    Join Date
    Apr 2002
    Location
    North LAs Vegas , NV
    Posts
    31,685
    Originally posted by khen
    That's good news QuadJunkies!!! I just got mine in yesterday, but I'm still waiting for the 450R cable from servicehonda. I have a few questions:

    1- What pilot/main jets did you use in the 450R carb and what did you have on your old one(for reference).

    2- Did you use the 400EX fuel hose, or did you use the 450R's?

    3- Did you have to modify the choke so it would clear the fuel petcock?
    Ill get more info tonight
    http://qjsimaging.com/

    -2002 Duncan 440ex-
    Yoshimura full system,JE piston(12:1),Stage 2 Hot Cam,Port,polish, +3 Chrome Burgards AArms ,Elka Suspension -Triple rate front and Rear,GT Thunder Rev Box,,Pro Armour Nerfs,Burgard beadlock rears,Orange Fullbore,Chrome Tank cover,Candy Purple PC,Blingstar Dana Creech Bumper

    2007 Suzuki LTR450
    FOX Shocks, JB Racing A-Arms, Silver Maier plastic, Quad Tech Seat Cover, BRM Offroad race numbers

    2008 Raptor 250 BUILD IN PROGRESS!
    Thank you 2010 Sponsors
    and Contributers!!

    Teixeira Tech,DWT, Fasstco Co., Maxima oils, Scott USA, Renthal, ODI, FLY Racing,Western Powersports, Promoto Billet, FOX Shocks,Maier Plastics,ODI,Rath Racing,ATV4-play
    ASV,Motoworks,QuadTech,Streamline,
    RockyMountain ATV,Powermadd,Les Schwab,QJ's Imaging

  10. #10
    Join Date
    Jul 2003
    Location
    UT
    Posts
    697
    Thanks QuadJunkies and yfz450admirer! I'm looking forward to trying this out, hopefully the cable comes in today.. I didn't think to order a 450R fuel hose though Hopefully I can make do without.
    2004 450R - 13:1 JE piston, HRC Cam, Yoshi full exhaust, ESR Intake, Hinson Clutch Basket, GT Thunder dual rate front revalves, Burgard +2+1 arms, GT Thunder rear linkage & rebuilt shock, G-Force +4 axle, W.E.R. Stabilizer, Tokyo Mods CDI, RAZR MX tires, Tusk nerfs, MSR bars, Tusk tether.
    2003 406EX - 10:1 Wiseco, HotCam Stg 3, Port & Polish, 450R 42mm carb, Stock shorty straight through exhaust, Powerbomb, K&N, FST cooler, Arens nerfs, Zaps CDI, 14T sprocket, VW Stabilizer, Magura Hydraulic clutch, Holeshot XC's(wifes)
    1990 Yamaha Blaster(sons)
    1986 Honda 200SX(daughers)
    2004 Tomahawk 110(sons)

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