The XR400 Thread

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

  1. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    7,060
    Location:
    Bent, But Not Broken
    Just so you know, the late-model CRF450 Cam Chain, Honda Part # 14401-MEN-A31, won't work on an XR400... too short. Ask me how I know. [​IMG]

    The correct part number is Honda 14401-MEB-671, having 112 Links, to fit a 2002-2008 CRF450.


    So... anybody need a late-model 108-link CRF450 Cam Chain, like new, never installed? [​IMG]
  2. Ed@Ford

    Ed@Ford Long timer

    Joined:
    Jan 16, 2004
    Oddometer:
    1,699
    Location:
    Dearborn MI
    Thanks for the info....I woulda bought the wrong one too!!!
  3. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    7,060
    Location:
    Bent, But Not Broken
    I have the correct one inbound from Ron Ayers. The short one is in ADV's Flea Market for $40 shipped. If no takers, I'll eBay it in a few weeks.

    I did research, but it was inadequate. In my Christini readings, I learned that CRF's changed in 2006, but didn't catch that the cam chains changed in 2009. So there are two...

    [​IMG]
  4. DrLewall

    DrLewall The Human GPS

    Joined:
    Aug 20, 2008
    Oddometer:
    34,689
    Location:
    Drakes Creek, AR
    as was stated correctly here :D
  5. MartiniUp

    MartiniUp Long timer

    Joined:
    Jul 14, 2010
    Oddometer:
    2,009
    Location:
    TX
    That guard on the rear caliper does nothing but retain heat which ruins the rear braking. You really should remove it.
  6. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    7,060
    Location:
    Bent, But Not Broken
    Wow yeah, a post from only two-and-a-half years ago. How could I have possibly missed that? [​IMG]

    I had a fifty - fifty chance.
  7. Ed@Ford

    Ed@Ford Long timer

    Joined:
    Jan 16, 2004
    Oddometer:
    1,699
    Location:
    Dearborn MI
    Just for jollies I went looking at wiseco dot com for an XR400 crankshaft kit. NADA....but they have the ATV crank assemblies (I assume it includes a rod) for $360....that ought be the starting place to build an e-start XR400 engine...rather than a used one that might be in poor condition.....
  8. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    7,060
    Location:
    Bent, But Not Broken
  9. DrLewall

    DrLewall The Human GPS

    Joined:
    Aug 20, 2008
    Oddometer:
    34,689
    Location:
    Drakes Creek, AR
    :rofl:rofl
  10. RideFreak

    RideFreak Torque Junkie

    Joined:
    Apr 17, 2009
    Oddometer:
    6,550
    Location:
    Out in the NM Dez somewhere
    HIDs are rated at 35W, that's the run requirment, they require around 50W for a couple of seconds to start up. 35W is well within the stators output provided the RPMs stay above about 2500. Once the bike rpms drop down to idle the HID relies on the battery (if you have one) to keep running. The stator doesn't make enough power to keep a battery up AND run the HID. Stock, the 400s stator just won't run a 35W HID reliabily, it will need a battery and a highoutput stator. The shutting off and starting back up of the HID as it tries to run off the shock output will ruin the ballast rather quickly also.
  11. volkoff

    volkoff n00b

    Joined:
    Nov 18, 2009
    Oddometer:
    5
    Hello, I am currently running a set of dirt wheels with 14/45 gearing and a stock 108 link chain. I just picked up a 2nd set of wheels that will get maybe some Shinko 700's or 705's. My plan is to run 16/40 with these wheels for the days I feel like going 65mph for a couple hours and not reving the engine to the moon. I want to keep the stock 108 link chain so that it is a very simple wheel and counter shaft sprocket switch. So I am asking if anybody else runs a 2nd set of road wheels with taller gearing and what size sprockets you use. I am not ruling out a 42 or 43 in the rear but I already have the 16.
    Thank you
  12. G600

    G600 Been here awhile

    Joined:
    May 18, 2009
    Oddometer:
    464
    Location:
    Iceland

    RideFreak is right of course, but you do not have the US XR400 model. The wiring on the pics is similar to the Euro models maybe you have that one. If so you have a little more power to play with as the Euro models have both DC and AC (extra winding/coils on the stator for DC. The USA models dont have it.)

    3.7 Ah battery is not that small, the HID light should not die right away when the bike idles.

    As far as I can see from the pics you have wired the light the wrong way. I think you need the green and black wires, but check for polarity.

    Aslo if you have been experimenting with the battery, and connected it the wrong way you may have damaged it. Do not assume it is OK when you troubleshoot.
  13. XR4EVER

    XR4EVER 919 excuses to ride!

    Joined:
    Aug 29, 2012
    Oddometer:
    1,123
    Location:
    Post Falls, ID
    I'm not sure about the countershaft sprocket, but as a general rule of thumb, changing one tooth on the rear sprocket moves the axle 4mm fore or aft. Adding or removing a chain link moves the axle 14mm. Hope this helps!
  14. DrLewall

    DrLewall The Human GPS

    Joined:
    Aug 20, 2008
    Oddometer:
    34,689
    Location:
    Drakes Creek, AR
    quoted just to see if I could STACK the pix insted of stretching them sideways! :rofl
  15. RideFreak

    RideFreak Torque Junkie

    Joined:
    Apr 17, 2009
    Oddometer:
    6,550
    Location:
    Out in the NM Dez somewhere
    Duh :eek1 I just noticed the wierd license plate on the front fender, all bets are off, it's different beast.
  16. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    7,060
    Location:
    Bent, But Not Broken
    Whew! I finished reading the whole thread. It took me a bit more than two weeks, taking time out for meals of course.

    I'm still waiting on the CRF cam chain, the carb is soaking in Pine-Sol, and I ground down the header welds this afternoon. I'll wrap the header tomorrow. Some folks will disagree with wrapped headers, but I experienced a nasty second-degree burn in my youth from having an unwrapped pipe lay on my leg after a fall. Yes, I was wearing shorts.

    It's good to survive one's youth.
  17. cdriscollmeir

    cdriscollmeir Adventurer

    Joined:
    Jan 23, 2011
    Oddometer:
    63
    Location:
    South Burlington
    It was a painful decision, but just sold my xr4. Thought she deserved a little tribute however cheesy it may be. . .

    <iframe width="420" height="315" src="https://www.youtube.com/embed/33WLDmq61pI" frameborder="0" allowfullscreen></iframe>
  18. Rman237

    Rman237 Ride Rural Texas

    Joined:
    Apr 30, 2007
    Oddometer:
    802
    Location:
    Fayette Co,Texas.
    :cry......:lol3
  19. MartiniUp

    MartiniUp Long timer

    Joined:
    Jul 14, 2010
    Oddometer:
    2,009
    Location:
    TX
    Did the same thingabout five yrs ago, just brushed up against the headpipes one afternoon. Would never heal and turned into a bad skin cancer and required removing a large chunk of my calf.
  20. MartiniUp

    MartiniUp Long timer

    Joined:
    Jul 14, 2010
    Oddometer:
    2,009
    Location:
    TX
    That was,,,,wait, gotta get a tissue,,,,,,,that was just awesome!!! Dumped her for a Swedish blonde, you heartless, cruel bastard!