The XR400 Thread

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

  1. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    8,095
    Location:
    Bent, But Not Broken
    Three nickles were about the only things that weren't in my sump strainer right after I bought the bike.

    [​IMG]
  2. DrLewall

    DrLewall The Human GPS

    Joined:
    Aug 20, 2008
    Oddometer:
    39,012
    Location:
    Drakes Creek, AR
    :eek1 DAYUMM! :eek1
  3. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    8,095
    Location:
    Bent, But Not Broken
    I generally don't talk to myself when I'm tinkering, but I cursed out loud when I got the strainer out.

    Fortunately, the rest of the sump was clean as a whistle (just some erl). A previous owner apparently nuked his piston, subsequently having the top end rebuilt, but neglecting to check the strainer. The "mechanic" probably didn't even know it existed.
  4. MartiniUp

    MartiniUp Long timer

    Joined:
    Jul 14, 2010
    Oddometer:
    2,266
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    TX
    That explains it, that pic is scary . :eek1
  5. DrLewall

    DrLewall The Human GPS

    Joined:
    Aug 20, 2008
    Oddometer:
    39,012
    Location:
    Drakes Creek, AR
    last time I checked mine was a little over a year and a half ago when I replaced the cam chain..it was clean then, and I suspect it is still
  6. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    8,095
    Location:
    Bent, But Not Broken
  7. G600

    G600 Been here awhile

    Joined:
    May 18, 2009
    Oddometer:
    472
    Location:
    Iceland
  8. GgnTrails

    GgnTrails Adventurer

    Joined:
    Jul 19, 2012
    Oddometer:
    11
    Location:
    India
  9. DrLewall

    DrLewall The Human GPS

    Joined:
    Aug 20, 2008
    Oddometer:
    39,012
    Location:
    Drakes Creek, AR
    Thats Great! I would suggest that everyone SUBSCRIBE to that thread so that you can find it real quick as it will be buried deep soon and you will have to hunt for it.

    Love the post #'s cause pages don't mean a thing!
  10. birds

    birds Been here awhile

    Joined:
    Aug 11, 2010
    Oddometer:
    329
    Location:
    NJ
    Thank you thank you thank you!
  11. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    8,095
    Location:
    Bent, But Not Broken
    I've PM'd the link to Thumpers Forum Mod GB for his perusal, asking him to consider the Index to be stickied at the top of the Thumpers Forum with the other bike-specific indexes. To be considered for Stickiness, he requires that the thread be maintained and updated, and I have assured him I will do so.

    Wish us luck!
  12. Rman237

    Rman237 Ride Rural Texas

    Joined:
    Apr 30, 2007
    Oddometer:
    802
    Location:
    Fayette Co,Texas.
    Luck wished. Seems a no-brainer to me , very useful info. :deal
  13. MartiniUp

    MartiniUp Long timer

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    Jul 14, 2010
    Oddometer:
    2,266
    Location:
    TX
  14. Fishnbait

    Fishnbait Adventurer

    Joined:
    Sep 10, 2010
    Oddometer:
    47
    Location:
    Queen Creek, AZ
    Me and the boy went for a ride today looking for some snow. Doesn't happen to much here in the desert. Area is known as Four Peaks. Didn't make it to the top. Turned around at last picture.

    [​IMG]

    [​IMG]

    [​IMG]
  15. DrLewall

    DrLewall The Human GPS

    Joined:
    Aug 20, 2008
    Oddometer:
    39,012
    Location:
    Drakes Creek, AR
  16. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    8,095
    Location:
    Bent, But Not Broken
  17. Stretch67

    Stretch67 Mad Scientist

    Joined:
    Mar 22, 2006
    Oddometer:
    8,095
    Location:
    Bent, But Not Broken
    I performed a pretty thorough once-over on mine since bringing it home earlier last month. It had started and run just fine, with no smoke, but the clutch was kind of grabby, and there was a hell of a racket coming from the valve cover. The valves were in spec, and the engine had great compression against the kick-starter, so I was pretty confident I had a good foundation to work with. It had started on the first kick, so I knew she liked me and wanted me to take her home. So I did.

    And...

    • New wheel bearings (double-sealed bearings, re-packed with waterproof grease and re-sealed. I would seriously recommend this. New bearings frequently have a ridiculously small amount of grease in them from the factory).
    • New chain & sprockets
    • Re-machined & shimmed brake pedal, described earlier here.
    • Re-welded cracked shift lever
    • New brake pads, cleaned / polished pins
    • Cleaned & lubed odometer drive
    • Flushed & replaced brake fluid, Dot 4
    • Waterproof grease on all rear suspension pivots & links and reassemble.
    • Soaked carb in Pine-Sol for a couple days, then careful cleaning & reassembly. 60 / 158 jetting, fuel screw 2 turns out.
    • Home-built extended idle screw.
    • Clutch basket fingers filed smooth, new cable.
    • Cleaned both oil strainers. Photo of sump strainer posted here earlier.
    • 2002 CRF450 cam chain, tensioner plunger OK.
    • Removed non-functioning auto-decomp assembly from cam, welded those two oil holes shut in cam.
    • New rockers, adjusted valves.
    • Removed & cleaned airbox & drains
    • Gordon's Mods (Uni filter, no snorkel, ground header welds). Stock muffler though. I like quiet bikes.
    • Wrapped header & sealed w/ high-temp paint.
    • Threads of all removed bolts were cleaned on buffer w/ wire wheel...
    • Every bolt going into steel was greased
    • Every bolt going into aluminum or high-temp application was Never-Siezed.
    • New grips & handguards
    • New footpegs ($20 eBay big 'uns)
    • Clean & flush tank
    • New fuel line & inline filter
    • Denso Iridium plug
    • Plug cap resistor replaced with copper rod
    • New fenders (red Acerbis)
    • Straightened bent subframe. Item had already been reinforced at the usual break point.
    • Rotella T6 5W/40
    • Fresh 93 octane


    And...



    [​IMG]

    IT... IS... ALIVE!!!

    Baby started on the FIRST KICK! :clap

    Nice and smooth, with no racket at all coming from the valve cover... just a nice sexy whir.

    A ride around the neighborhood (in the dark, lights work) revealed no nasty surprises. Clutch friction was good at low speed top-gear roll-on, no slipping. Great low-end torque, smooth power delivery with no obvious off-idle dead spot.

    SO HAPPEE!
  18. G600

    G600 Been here awhile

    Joined:
    May 18, 2009
    Oddometer:
    472
    Location:
    Iceland
    Nice :clap:clap Congrats. Quite a lot of work....
  19. franga

    franga Adventurer

    Joined:
    Oct 19, 2012
    Oddometer:
    16
    Hey guys,

    lovin this forum. ive got a 140/80/18 rear tire and it needs changing. will a 130 90 18 fit?
    cheers
  20. DrLewall

    DrLewall The Human GPS

    Joined:
    Aug 20, 2008
    Oddometer:
    39,012
    Location:
    Drakes Creek, AR
    nope..too wide 120 90 will fit tho..at least on a 96 model that is