The XR400 Thread

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

  1. Fishnbait

    Fishnbait Adventurer

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    Sep 10, 2010
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    Queen Creek, AZ
    Broke a throttle cable on my last outing. Can anybody give me the Honda part number for the pull cable. The fiche online are confusing to say the least. Not much love from the Motion Pro cables, would rather use genuine Honda.
  2. RideFreak

    RideFreak Torque Junkie

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    The only way to tell them apart online is to look real close at the picture where the cable connects to the throttle and you'll see one has a square rubber boot and the other a round boot.
  3. Fishnbait

    Fishnbait Adventurer

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    Thanks, but the problem is they list two part numbers under the same tag number, and tag #1 and #2 have identical part numbers. Maybe i'm looking in the wrong place. Rocky Mountain and Ron Ayers. By the placement in the photo I believe I need tag #2, rear cable on throttle tube.

    EDIT: Screw it. Just counted my change jar and ordered both.
  4. Stretch67

    Stretch67 Mad Scientist

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    Are there any identifying marks on fork springs in regard to their rate?

    I'm needing to go into the forks on my '98 and at least ID the springs (hoping for .46's), as well as change the oil and do the Shim Stack Mod, if not already done. There's most likely not a set of .46 kg/mm springs already in there, but I'd like to ID the current residents just to be sure.
  5. lamebrain

    lamebrain Adventurer

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    I'm interested in hearing about the difference this makes. I've been thinking of doing this to mine!

    And a pic just because.
    [​IMG]
  6. curlysurfer

    curlysurfer in need of a ride

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    Thanks heaps for putting together the search index. How many alcoholic drinks did that actually take??????

    i asked the same spring rate question a few weeks ago and was directed to thumpertalk

    Hope this helps. I need some .48's as mine dives quicker than a lesbian at Liquorland
  7. RideFreak

    RideFreak Torque Junkie

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    I looked on the stock springs I took out and didn't see any identifying marks, the eibach springs had the rate and part number stenciled on the coil about 6" from one end.

    There's a method to count the coils, measure the wire size and distance between coils to come up with the rate, unfortunately I've seen it referred to but never looked up a chart or exact procedure, sorry.

    I was considering a USD upgrade prior to this mod and scoured TT, 4strokes.com and here for XR400 fork information, from what I've read the the vast majority of riders felt the stock forks can be made to work as well as USDs on the 400. They're just setup wrong out of the crate, specifically too much compression dampening and too low of a springrate for most riders (unless your about 140lbs). Aside from incorrect springrate, the excessive compression dampening causes the bike to standup in corners (I've noticed that) When compared to my 300xcw the XR doesn't want to turn. This is supposed to cure that, I'll see. It def feels much more compliant.
  8. Luke

    Luke GPoET&P

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    It makes the ride feel much plusher, and the front end will deflect (twist sideways) much less on sharp hits like roots and rocks. The downside is that the front will also tend to dive into whoops instead of helping you skim over them.

    IMO, if you mostly ride at:
    Sand dunes (Xmas valley, coast dunes) leave the compression alone.
    Sandy desert (China hat, Millican) do the mod halfway- leave in 8 shims give or take, depending on your weight.
    Everywhere else in OR: do the mod all the way, leaving 6 shims installed.


    No matter where you ride, getting the right springs will help a lot.
  9. DualSpaz

    DualSpaz Been here awhile

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    Tijeras,NM
    Sorry I didn't see this sooner. Pull cable usually starts with 17910, push cable usually stars with 17920.

  10. Stretch67

    Stretch67 Mad Scientist

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    Great info, thanks for the link. :freaky

    Awesome! Thanks!
  11. Ed@Ford

    Ed@Ford Long timer

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    That's one hell of a gender/sexual orientation slur!
  12. Ed@Ford

    Ed@Ford Long timer

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    As an XR400 owner with a lust for an electric start, I did some looking for a NEW 400 ATV crank and came up with a tidbit that there is a hot rod cranks place that makes stroked cranks (4 or 6mm...can't remember) with big bore pistons that will make a 460+ displacement XR4 engine......holy crap...imagine a monster displacement XR400 with e-start if one has deep enough pockets! monster torque....holy cow....has anyone looked into this in any depth?
  13. ID XR600

    ID XR600 Been here awhile

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    DirtBike mag did an article on a guy who put the EX400 motor in a XR400 frame,,,had reverse. Anyone here doing that for the e-start???
  14. Ed@Ford

    Ed@Ford Long timer

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    I subscribed to DB since the 70's. Discontinued it a couple years back....don't recall that. Got a clue of what issue? Would like to have it for reference.
  15. franga

    franga Adventurer

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    hey!
    i am loosing oil! cannot find a leak anywhere and in my opinion its not running rich. :huh WTF is happening? any of you guys have a similar problem?
  16. cbig

    cbig Rift- Raft, SCooter Trash

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    e start on mine with the trx400 left cover and a mikuni pumper carb. Works well, clearance no problem, the e start is nice but not necessary. I use it when I ride the 400, but not at all necessary if you had other uses for the money. I ride an xr250r and a xr600 as well, so kicking is no big deal, second nature. Only places I remember glad I had it was when I get hung up on a rock and stall. Only happened twice.Bike starts as easy as any modern bike.
  17. DrLewall

    DrLewall The Human GPS

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    mine does the same thing..I think it burns it a little..CHECK YOUR OIL OFTEN GUYS!!
  18. franga

    franga Adventurer

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    this was about 800ml to a liter in an hour long ride. cannot be normal surely? i have just done an oil change this afternoon and will keep an eye on it...
  19. MartiniUp

    MartiniUp Long timer

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    I think you are in denial, order some parts. Now!
  20. Ed@Ford

    Ed@Ford Long timer

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    holy cow....if it's not dripping off the engine and all that much going out the exhaust, you gotta be making clouds of oil smoke!!