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Thread: 450r carb.

  1. #21
    Join Date
    Oct 2009
    Location
    Somewhere in Texas
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    3,135
    If I remember right the plunger goes in first with the point pointing down, then the spring goes on top of that with the cap going on last. The boot coming from the air box is fairly stiff so it won’t crush like you think. That fits very tight so the clamp is just to secure it and keep dust from getting in. I’ve had this set up this way for a year now and it’s holding up fine and works great. It only cost a few dollars for the 2” hose and clamps. The hose I used is like the ones you use to patch to pipes together without removing everything. I can’t remember what you call it, it has a name but I can’t remember.
    I have a 416 with 12 1/2 - 1 and stage two cam, porting and pipe with the air box lid removed and the header welds ground. The 450 carb I used worked great right off the bat but I did bump the main up to a 200. I sometimes run a 195 main but mostly a 200.
    The pilot is stock I think but I suspect that the guy I got it from had put in the hr kit at one time and I don’t know what the jetting is on those. It did have a bigger main jet in it when I got it so that’s why I think it had the kit installed. I don’t know where the needle is ether
    It run great so I never had to mess with it.
    Slightly Bent Racing # 47
    400ex with some stuff
    You shouldn't be concentrating on how fast your bike is.
    You should be concentrating on how well you can ride it.
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  2. #22
    Join Date
    Mar 2010
    Posts
    294
    Man! I can't believe people have to run such a big jet. Mine is rich on the top end with a 162 and its lean on the bottom with the stock pilot, 3 turns out on the screw. As far as the hot start goes, I did put it in that order I was just wandering if you just drop it all in or if their was something special that had to be done.
    '05 400ex------------*SOLD*
    - 11:1 wiseco 416

    - K&N with outerwear

    - 450r Carb

    - FMF PowerCore 4 slip on- FOR SALE (Big Gun or LRD next)

    - Tusk nerfs with heel guards

    - WTB: 450 Front Shocks

  3. #23
    Join Date
    Mar 2010
    Posts
    294
    I finally got some time after work to do a little tuning on the carb, and I think I'm 90 % there. It is slightly rich off idle, which I kind of expected with a 52 pilot and 2 turns on the screw I'll prob back it down to 1.25 mabye 1.5 turns. The odd thing is I ended up at a 155 for the main, actually its the exact jet out of the stock carb. I was slightly rich on the stocker but I am confused as to why I have to run the same size main. I think it may be a bit lean now (20 degrees) but when summer comes around I think it will be pretty close to perfect. What do you guys think?


    P.S. This plug had about 20 hours on it before I started this test, below is after 15 minutes of messing around in the trails/ fields and then a 3rd gear plug chop.



    Photobucket
    '05 400ex------------*SOLD*
    - 11:1 wiseco 416

    - K&N with outerwear

    - 450r Carb

    - FMF PowerCore 4 slip on- FOR SALE (Big Gun or LRD next)

    - Tusk nerfs with heel guards

    - WTB: 450 Front Shocks

  4. #24
    Join Date
    Apr 2005
    Location
    WI
    Posts
    8,922
    looks nice! 155 is quite low but hey looks good to me! congrats on jetting it correctly. steve
    2019 Maverick X3 XDS Turbo R
    2003 TRX 400EX
    2016 HONDA RANCHER

  5. #25
    Join Date
    Nov 2010
    Location
    OH
    Posts
    1,229
    idk if this guy still makes em... http://www.exriders.com/vbb/showthre...b&pagenumber=1
    Work in progress-
    Caleb Moore Will Never Be Forgotten--

  6. #26
    Join Date
    Feb 2008
    Location
    My home is Missouri
    Posts
    2,908
    Originally posted by 426kidz
    idk if this guy still makes em....http://www.exriders.com/vbb/showthr...rb&pagenumber=1
    link doesn't work...
    2000 Honda TRX400EX ( MX Setup )
    2006 Suzuki LTR450 ( Stock )
    1986 Suzuki LT-250R ( Stock )
    2001 Kawasaki KX250 ( MX Setup )
    2004 Kawasaki KX85 ( Playin Bike )
    199? Yamaha PW80 ( Pit Bike )
    2003 Polaris Trail Boss 330
    1996 Kawasaki Bayou 220

    Proud owner of more than 38 internal combustion engines!!!

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  7. #27
    Join Date
    Nov 2010
    Location
    OH
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    try it now!
    Work in progress-
    Caleb Moore Will Never Be Forgotten--

  8. #28
    Join Date
    Feb 2008
    Location
    My home is Missouri
    Posts
    2,908
    Originally posted by 426kidz
    try it now!
    works.
    2000 Honda TRX400EX ( MX Setup )
    2006 Suzuki LTR450 ( Stock )
    1986 Suzuki LT-250R ( Stock )
    2001 Kawasaki KX250 ( MX Setup )
    2004 Kawasaki KX85 ( Playin Bike )
    199? Yamaha PW80 ( Pit Bike )
    2003 Polaris Trail Boss 330
    1996 Kawasaki Bayou 220

    Proud owner of more than 38 internal combustion engines!!!

    Support our troops and we will support you!!! HOOAH!!!

    Assist, Protect, Defend!!! Military Police!!

  9. #29
    Join Date
    Nov 2010
    Location
    OH
    Posts
    1,229
    yeah, idk how good this helps, didnt really read everythin in the post but just an idea for him.
    Work in progress-
    Caleb Moore Will Never Be Forgotten--

  10. #30
    Join Date
    Aug 2008
    Location
    Central NJ
    Posts
    11,326
    I have said adapter, not sure if he makes them anymore as I havent seen him around and he was talking about the machining costs had gone way up on these.

    Its just some aluminum pipe material Im sure. If anyone needs I could provide dimensions.
    If it's stupid, and it works, it isn't stupid. - Murphy's Law
    2000 426EX,sold
    2004 450R WIP
    -Longtime A.A.D.S. (Accessory Acquisition Disorder Syndrome) sufferer.
    400EX Frequently Asked Questions, CHECK HERE FIRST!

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