The XR400 Thread

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

  1. Ed@Ford

    Ed@Ford Long timer

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    Wallrat:

    Yup...mine's in there .....real good and tight....a 4' breaker bar won't budge it....got a big horizontal boring machine with a rotary table...gonna bore the SA bolt out in 3 steps...got a used swing arm if this one needs the "sawzall-treatment".

    I can afford a KTM....had one sold it, went back to the XR.....now, after Dr. Lewall's guidance, the XR starts reasonably well, so it deserves a new swing arm bolt...that'll hold it till I hit 70.....
  2. mark1150

    mark1150 Been here awhile

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    Thanks guy's,
    My swing arm has always been free, and the welder also copper slipped it before he reassembled it.
    My bolt is stainless steel, the reason I mention it is because an SS bolt of that dimension is going to be a proper sod to drill out.
    Would it not be possible to try and apply localised heat to the rear of the stand, (as it's mild steel) so as to expand it, as that's the part that is threaded, and once it's loosened it should just come away as normal?
    Cheers,
    Mark.
  3. davidgibson999

    davidgibson999 Been here awhile

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    Does anyone know if this is possible?
    Can I power a zumo 550 from a standard 2000 XR400R
  4. IronSpadeCycles

    IronSpadeCycles Button Pusher

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    I think your going to need a battery and a regulator/rectifier like the 150w Trail Tech unit. I have one on my XR4 when I did the dual sport conversion I added a fuse block for a cigarette lighter power jack and a power wire for my Garmin 276c as well as the lighting circuit. Its worked perfect for over 6000 miles so far. I added a small 1000ah SLA battery I mounted under the seat in a slot I cut in the airbox.

    I really don't think you can power it off the simple AC lighting circuit. Good luck. Hope this helps.

    Later Travis
  5. Wallrat

    Wallrat Been here awhile

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    Iron is correct. You'll need to float the ground on the stator and add a DC regulator. I did it when I got my 200w stator from rickystator. Easy to do, and RS will walk you through it. I've got a cig outlet tucked up behind my headlight and I just plug my 76cx in whenever its on the bike. I kept frying the small NiMH batteries so I put a small lead acid where the AC rectifier used to be under the gas tank.
  6. davidgibson999

    davidgibson999 Been here awhile

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    Thanks- seems quite complicated so I'll probably buy a power pack that can charge the zumo via USB during stops etc...
  7. IronSpadeCycles

    IronSpadeCycles Button Pusher

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    I need carb jetting suggestions for my 11:1 compression Wiseco 440cc big bore kit with a Hot Cam's stage 3 cam. I'm going to put a Mikuni flat slide TM38-85 mostly because I already have one. Stock pilot is a 22.5, Main is a 230 and I have a bunch of Mikuni jets from years of two stroke road racing. I mostly just need a possible beginning point to get the bike started. Anyone out there running a 36 or 38mm pumper carb know what their jetting is ? I have the Sudco catalog which helps a bit but I need some friendly advice from those in the know. I'm at sea level but anyone's info with their altitude will help me find a ball park starting point.

    Thanks guys, talk soon, Travis
  8. GgnTrails

    GgnTrails Adventurer

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    Jul 19, 2012
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    India
    Back with a noob question after a long time...

    My XR has not been ridden or started for nearly three months since it got trucked back from a Himalayas ride. In preparation for riding, I went today to change oil, oil filter, air filter, etc.

    I found there was no oil upon opening up the drain plug at the front down tube. I knew the shipper had drained fuel, but no oil was a surprise. I suppose if the drain lets out no oil, there IS no oil, right?

    So I topped up new oil, put in a new oil filter, newly oiled Uni air filter, fuel....and gave it a good try starting. Did the whole choke/de-compress/prime/kick routine. Gave up after 50-70 kicks and a liter of sweat. Not a sound though...nothing.

    Is there anything particular I have to do? Or just go another 100 kicks?
    Used to always start in 1-3 kicks earlier.
  9. Luke

    Luke GPoET&P

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    After sitting for that long the oil from the frame may have drained back into the motor. If so, after that much kicking the oil should be pumped back up into the frame. Recheck the oil level in the frame. I'd bet it's overfilled now. But it's much better to be overfilled than empty.

    Was the carb drained too? I'd at least drain it to make sure there's fresh gas in there.

    I'd also check spark. It shouldn't be a problem at all, but would you rather find out now or after kicking it another 200 times?
  10. DrLewall

    DrLewall The Human GPS

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    I remember kicking mine for abt 100 times only to find out, I was kicking it on the exhaust stroke! :huh

    I then learned to listen for that little click when the valves hit TDC..then a good kick and it lights..but as Luke says, check to make sure you got spark first, and that means spark at the plug you have in the XR..you can have spark with another plug and the plug in the bike be a dead one..good luck
  11. Wallrat

    Wallrat Been here awhile

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    Dunno how your gas is out there in India but here in Cali if you leave gas in your carb for 3 months you can pretty much bet on plugging a pilot jet. Take apart the carb and clean the jets - make sure you can see light through them. Put new gas in the tank. I usually take my old gas and slowly add it into my bikes/lawnmowers/etc. Just a few ounces per tank to burn it off.
  12. GgnTrails

    GgnTrails Adventurer

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    Thanks all. Unfortunately the weekend ran away from me, so next weekend.....
    Will check spark plug and put the carb through a cleanup.
  13. Clem Kevin

    Clem Kevin Nude With Boots

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    Rode up near 8000 feet this weekend with the XR, bike was having trouble running right. I've discovered the noise the engine was making was an exhaust leak at the manifold, and was wondering if the sputtering at high altitude was a symptom of an exhaust leak, or just poor jetting for the situation? bike ran alright at speed, but in any of the slow stuff it didn't want to idle, and died a handful of times, usually luckily downhill.
  14. Tachedoutoffroad

    Tachedoutoffroad Mr. Parrish

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    Got the foe-hunded!

    Like it a lot! :clap

    Very, very clean. The original owner had it from 96-05, then my buddy from 05-yesterday :D

    The power, seat height, weight, low end power, and street ability are spot on. Got to get the 5min cold start fiasco down to 1-2 minutes and pump up the rear tire if I want to jump 18" longs and not get pinch flats :lol3:lol3

    Working on the legal tag stuff now, but temporarily it will be an '11 Husqvarna 310 if somebody runs it :evil

    I only rode it 20mins or so, but it reminds me more of my 610 or 310 than it does an DR200, DR350, DRZ400 that I've had/rode. The torque is more 610ish and weight 310ish. The DRs were just uninspiring to me.

    I have high hopes for it. Maybe when it's laid over I won't cuss it toooooo much kicking it on the side of a hill :ear but as it stands, my 310 is not x4 the bike this is (like it cost :deal) at least at my noob riding ability level it's not.

    Will have a better report after 100 miles on it Sunday :lurk have the spring/ rebuild for the front end and dual sport kit on standby if all goes well.
  15. Wallrat

    Wallrat Been here awhile

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    Slap a pumper carb on there if you want the quick and easy route to 1 kick starts.
  16. Tachedoutoffroad

    Tachedoutoffroad Mr. Parrish

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    I'm trying to read this thread 15-20 pages a night as to not ask the same questions over and over....


    But....

    The pumper carb help with just cold? I think I'm more concerned about eating it on a hill and it taking forever to start up. If I pick it up fast, will it kick pretty easy? Or any fall over = kick kick kick ?

    Got a 100mile ride Sunday. Guess Ill figure it out :D
  17. Ed@Ford

    Ed@Ford Long timer

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    I seem to recall some of the pumper carbs had a "hot start" knob that you use when it's been dropped and maybe drooled some fuel into the intake and made it too rich to restart well....on a non pumper you hold the throttle wide open with compression release on and kick it thru a few times to pump mostly air into the cylinder to "clear it out"....then proceed with the appropriate start process

    maybe there are some pumper carb folks out there with "real" experience in such matters that can chime in
  18. Tachedoutoffroad

    Tachedoutoffroad Mr. Parrish

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    Thanks a lot
  19. Czechsix

    Czechsix Slower than you....

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    I've found that if I can get it back off the ground fast, it'll fire up with only one or two kicks, don't have to clear it. OTOH, if I let it sit there, then I'll have to clear it before trying to fire it off. Like you said...you'll figure it out. Wish I had mine running now, but I don't. Bah.
  20. Wallrat

    Wallrat Been here awhile

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    Flooded is flooded. Another quick squirt of gas from a pumper carb when you go WOT isn't going to make it any harder to clear. Process is the same when you dump it. WOT, kick it a few times (with compression release if you have it), then start like normal.