The XR400 Thread

Discussion in 'Thumpers' started by Hayduke, Jan 16, 2008.

  1. DrLewall

    DrLewall The Human GPS

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    yep..buddy friend of mine FAILED to do that and now he's looking at a whole new top end on his 400 :huh
  2. mark1150

    mark1150 Been here awhile

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    Thanks for all of the replies guy's it's very much appreciated.
    Would you recommend the dye thing ? or to put it differently would it cause any harm? as I really would like to be able to definitivley see the oil on the dip stick, and I think that it's so clean that it doesn't show.

    OR

    Assuming that I'm correct is there another way of tell whether it is present?
  3. XR4EVER

    XR4EVER 919 excuses to ride!

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    I'm not trying to be a smartass, but take the dipstick out and wipe it dry. Reinsert it. If there is oil on the dipstick it will be wet. If not, it will be dry. Am I missing something? If it is so thin that it is hard to tell, you need some thicker oil in that thing! 20-50 is recommended for summer months.
  4. XR4EVER

    XR4EVER 919 excuses to ride!

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  5. RideFreak

    RideFreak Torque Junkie

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    If it's present you'll see it on the dipstick.
  6. MartiniUp

    MartiniUp Long timer

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    Nope.
  7. marc11

    marc11 Been here awhile

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    I recently purchased a 2002 XR and one of the things that amazed me is the original order documented every single service, kept every single receipt up until 2011. He mentioned greasing the linkage back in 2006 and 2009 but wasn't sure if that included the swingarm bolt. So I broke the bike down before even riding it with some worry.....well I must be the luckiest guy in the world or got the last of the great XR's.....

    I just took all my linkage apart. Everything came off easy, everything had been cleaned and greased by someone before me. No rust, no corrosion. NICE! Just need to regrease it all and slap it back together.
  8. DrLewall

    DrLewall The Human GPS

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    Lucky bastid! :thumb



    :lol3
  9. coffman300

    coffman300 Been here awhile

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    i need some help on my friends xr 400.im putting a led light bar on it for him like the one i put on my xr650l but from what i understand its a ac not a dc system so i cant just hook up to the head light .i would like to put a switch in line with the head light so i can run one light or the other not both at the same time.im using a dtdp switch on-off-on.any help would be nice.thanks
    it a 04 if that helps at all
  10. Stretch67

    Stretch67 Mad Scientist

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    Incandescent bulbs aren't picky, but you'll have to wire the lighting circuit through a Rectifier in order to run LED's. Rectifier = converts AC to DC by running the current through a bank of diodes. Diodes function like one-way valves, allowing current to flow one way, but not the other.

    http://www.procycle.us/dskits/dskit.htm#batteries
  11. spawn_x

    spawn_x Been here awhile

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    Guys here's an odd one - my clutch started having issues so I took the cover off, and the pressure plate bearing came apart :huh and was binding up the pull.

    Anyone ever heard of this ???

    I've always dealt with clutch not disengaging fully all the time and hard to find neutral. Ordered OEM clutch discs off ebay as well, but wondering what in the world would cause the pressure plate bearing to fail

    Thanks
  12. RideFreak

    RideFreak Torque Junkie

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    Yup, LEDs are DC, you'll need a rectifier and a capacitor a the least, expect a flicker in the LEDs at idle with the cap. A battery is preferable for good light, it will supply power at idle when the stator's output is low. Some LED controllers (circuitry in the LED unit) can be picky when it comes to the DC power you supply them, if that's the case you'll have to go the battery route.

    Here's a simple Rec/Cap setup
    [​IMG]
  13. STFU

    STFU Found

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    Just joined the XR4 family! I gave up on my 88 XR600 project and just bought a running, complete bike. Came with many upgrades and two sets of wheels (SM and Dirt) full dual sport electronics kit installed and ready to ride!
    [​IMG]
  14. coffman300

    coffman300 Been here awhile

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    thank you guys for the quick feedback.could i use the little battery pack that is used for the baja kit .if so how do i wire it to the stator the rectifier and light so the battery will charge.thanks again
  15. Stretch67

    Stretch67 Mad Scientist

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  16. spawn_x

    spawn_x Been here awhile

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    The plot thickens..

    [​IMG]

    [​IMG]


    Upon examination, it appears the previous owner installed what looks like a Hinson basket (score!?) and I have 7 and 8 discs/plates instead of 6 and 7. You can see the bearing that fell apart in the second picture on the left. Things are starting to make more sense. Clutch hub doesn't look stock-colored either..

    Anyone heard of extra clutch plate/disc or got any input?

    Springs are at 46mm, don't look stock (yellow colored)

    no wonder I can't find neutral on the bike :rofl
  17. spawn_x

    spawn_x Been here awhile

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    Did more thinking and checking on ebay.. this most definitely is aftermarket clutch pack.

    To answer my own question.. because it always dragged and I always had trouble finding neutral, I spent my red lights with the clutch pulled in. Coupled with heavier duty springs, I bet it must have placed additional + continuous (at red lights) stress on the bearing, causing it to fail.

    Well, no big loss, hopefully the OEM clutch takes care of the neutral + dragging problem, and the bearing is no big deal I guess.

    Pretty stoked about my aftermarket basket though :D previous owner really shelled out some coin on this..
  18. Stretch67

    Stretch67 Mad Scientist

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    I'm glad it was something simple (incorrect assembly by a previous owner). You ought to be well-served with OEM springs and the correct number of OEM plates. And a new bearing. [​IMG]
  19. DrLewall

    DrLewall The Human GPS

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    I suspect that you might wanna replace that basket with an OEM one too..don't know why folks wanna replace what works fine with some tricked out aftermarket item...unless they are drag racing an XR400, and frankly I aint never heard of anyone professionally drag racing a XR :D

    Seriously though, go back to OEM and you will be grinnin ear to ear at a stop light, and it will hook up just fine for any rabbit start you throw at it and your little ole bearing will last forever.
  20. hughrk

    hughrk Adventurer

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    Anyone heard of extra clutch plate/disc or got any input?

    Springs are at 46mm, don't look stock (yellow colored)

    no wonder I can't find neutral on the bike :rofl[/QUOTE]

    Basket mod and extra plates are two independent mods if memory serves me. You need to check that clutch centre, I think the inside face gets machined to allow the extra plates to be fitted? Check here http://www.gtthunder.com/models/400EX.html, the clutch link is 404 just now but give them a phone.