How to Turn a YZ400F into a Dual Sport

Discussion in 'Some Assembly Required' started by Clew540, Mar 19, 2011.

  1. D.T.

    D.T. Difficult but useful

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    Do they give you a sheet of the emissions results and guidelines? Or just PASS/FAIL?

    No title? No other tests?
    #21
  2. Clew540

    Clew540 Ready to Ride

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    Here you have to have title and yes they do give a sheet stateing you passed.
    #22
  3. a1fa

    a1fa Throttle Jockey™

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    Now you need to add a 2003 YZ450 exhaust cam for easier starting. WORTH the $140!!! One kick, easy push, she always starts.
    #23
  4. TRZ Charlie

    TRZ Charlie That's MR. Asshole

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    Nice build and bike Coy. I know your Dad is really proud of your achievments at MMI. WTG!
    #24
  5. Clew540

    Clew540 Ready to Ride

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    I love my manual decomp i always now when she will start one kick everytime :) And it prevents other from starting it if they dont know anything about the bike.
    #25
  6. Clew540

    Clew540 Ready to Ride

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    thanks now when i come home we all can go riding. :)
    #26
  7. joenuclear

    joenuclear Planning.....

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    Looking good Coy!

    If we are gonna ride with your dad don't forget the tow rope.:D
    #27
  8. Dave in Wi

    Dave in Wi Long timer

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    Looks great! What a fun bike, a friend of mine has one like this. The right rear turn signal will probably melt... but who cares when you have a bike as fun as this to ride.
    #28
  9. Clew540

    Clew540 Ready to Ride

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    dont think so the exhaust has been cut down so i am thinking there is plenty of cool down time before the exhaust hits the turn signal
    #29
  10. Dragon43

    Dragon43 If you insist.

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    Looks good.... Can I do that to my 1977 Yamaha XT500 and get rid of the 6V system?

    I have my de-comp lever mounted the same... I love it that way.

    You made you a bike that you can have a blast on and nothing is a mystery to you about it. Gots to love that....

    :gerg
    #30
  11. DrLewall

    DrLewall The Human GPS

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    Nice job son! :thumb

    Now we gotta figger' where to put that thing when you get home! :lol3
    #31
  12. JaiDee

    JaiDee Petrolhead

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    Way to go Coy! Can't wait to ride with you when we're both back in Ark. I like the way you cleaned everything up with wiring and all the rest of the bits and pieces. Ride safe!

    -JD
    #32
  13. nanotech9

    nanotech9 ** Slidewayz **

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    looks good! I dont know about the 400's for sure, but my 426 had a "blue wire mod" that allowed the bike to get full spark when starting it instead of a reduced spark rate. You unplug the blue wire out of one of the plugs.

    Also, out on the highway, those bikes would pop and have irregular steady throttle unless you disconnected the TPS sensor. It never seemed to harm the bike any other way, and cured the irregular throttle issues. Documented fix for the 426.

    Get the auto-decomp cam. I promise you you'll love it. I always liked my decomp lever, but you get stalled once at a light somewhere, with traffic behind you, and you try to get it restarted in a hurry under pressure, you make mistakes and the bike wont start lol. the auto decomp will let you kick it over while you're still moving and balanced on the bike w/o putting a foot down. ;)

    lookin good!
    #33
  14. hellfire76

    hellfire76 haphazard adventurer

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    I love those E-line stator setups. I had one on a CR500. I had dual headlights on the thing and it would light up a whole forest. I am in the middle of setting a friends CR250 up with lighting and found out you can't buy them new anymore.
    #34
  15. mark horton

    mark horton n00b

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    hey i have the same bike and would like to do the same thing but i cant find a stater where did you get your stater and headlight, tail light and reg/rec.
    #35
  16. tntmo

    tntmo Been here awhile

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    Even though you brought an old thread back, I can help you out. You probably can't buy that stator anywhere unless you get lucky and buy a used one. What you can do is install a flywheel and stator from a WR426 to get your electrical power. Then just find a head light and tail light that you like online.
    #36
  17. motoxer667

    motoxer667 Been here awhile

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    I run a WR400/426 Stator and Flywheel on my dual sported '01YZ 426
    I also put in a WR 5th gear in the trans
    #37
  18. motoxer667

    motoxer667 Been here awhile

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    I should have read one more reply to this thread before posting my other one:rofl
    #38
  19. Clew540

    Clew540 Ready to Ride

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    Well the thread is kinda old but not old enough for me to have bought the stator i have new. I got the external stator of ebay used i have seen them on there since. However you can use the stator and flywheel from a 2001 wr426 i believe that is right but so some research to make sure. If i recall that stator off the 426 is 130watt stator the baja designs stator i put on is a 180watt stator. As far as headlight and regulator its a baja designs kit for yamaha it comes with a regulator however i went with a high output regulator being i am pushing 180 watts instead of 100 watts. Like i said do your research if you do the flywheel and stator conversion i believe you have to change wiring harness and all. Good luck with your bike if you have any other questions i will help as much as i can but all i know is from researching this bike online.
    #39
  20. JerryH

    JerryH Banned

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    Unfortunately this is the hang up. Easier said than done. Most of my street and dual sport bikes have failed emissions quite a few times. Trying to get an older MX bike through emissions would not be easy. You must have just lucked out. I have 2 different carbs for my XT225, one properly jetted for riding, and one jetted way to lean to pass emissions. I have to swap them every year. There is absolutely no chance of getting a 2 stroke through AZ emissions. My ex inlaws have 3 quads converted to street legal, and they have had a nightmare trying to get them through emissions.

    The really sad thing about it is that Maricopa county is the ONLY county in the entire country that has emissions testing for motorcycles, and a law was passed back in 2008 doing away with it. Now, more than 4 years later, that law has still not taken effect. I'm beginning to lose hope that it ever will. IF it ever does, I think the first thing I'm going to do is to take a big 2 stroke MX bike and make it street legal. Take that EPA.
    #40