The XT600 Thread

Discussion in 'Thumpers' started by CR_TurboGuy, Jan 21, 2007.

  1. Coots

    Coots That's what she said

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    I will almost second Steve's method, only difference is I use aquarium gravel instead of screws, but thinks about it, counting the screws in and out would ensure nothing was left in the tank after a clean out. There are also some vids on youtube that use gravel and the wife's clothes dryer. I have NOT tried this as I value my life too much.:evil

  2. steveloomis

    steveloomis Been here awhile

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    I have heard of attaching your tank to a variable speed drill, clamp the drill and run slow for a few hours. Yeah, gravel works too.
  3. G600

    G600 Been here awhile

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    Great:clap What year is your XT? XT600 or XT600E? How about some pics?
  4. yamahaman

    yamahaman wannabe bike builder

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    Mine is a 91. Going to post a heap of work done on my project (link is in signature) I have been a bit behind in posting.

    I have been thinking about the carb fitment to standard xt's but the two inlets of the xt carbs are two different sizes (52mm & 44mm) where the ninja carbs are 50mm the good news is that the ninja carb is 5mm shorter so I may be able to spin up a pair of adapters.

    I think I can work it out but if I was to make them it would cost a fortune so I think I can post something if people are interested

    :1drink:1drink:1drink
  5. thumpthumpthump

    thumpthumpthump Thumpthumpthump

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    If the ninja carbs fit in the inlet manifold of the engine use the air box to carb runners from an 84-89 xt to go around the shock and use filter pods. If you heat the 44 runners they should stretch over the 50 carb inlets. I hope. How do the ninja carbs fit the carb to engine manifolds? They are 2 different sizes also. I have put 86 carbs on my 90 with 2 left side manifolds. The 86 carbs are both the same size , in and out. thumpthump
  6. yamahaman

    yamahaman wannabe bike builder

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    I have fitted the EX250 carb to mine and they fit straight up to the motor perfectly, However I have got a custom Airbox-inlet tract and it was very easy for me to do the required changes here.

    Check out my build to see my fitment

    This does not help the standard guys out though But I think I have a solution.

    [​IMG]

    Because both of the inlet bell's are different sizes it will cause the most amount of problems. So one is 52 mm and the other is 44mm.

    [​IMG]

    So my solution is this.

    The Ninja cvk carb is around 5 mm shorter than the original carb by making a pair of rings like the NOSS fcr adaptor rings, I think that it would be possible to reduce the left hand 50mm bell down to 44mm, and the 50mm to 52mm side would be very easy to do.

    http://www.nossmachine.com/fcr_adapters.htm

    [​IMG]

    I think I could get it to work But I have a lathe and mill in my work shop, if you dont have access to these tools a neat fitment for this carb to a standard XT may prove to be a bit tricky. apparently there is a crowd making a cr smoothbore set up.

    http://www.power-barn.com/servlet/the-744/Yamaha-TT600-or-XT600/Detail

    (Click on the detailed description looks like you have to ditch the inlet tubes and go to pod's)

    I think the bigest problem is the two different size inlets I may have a solution but it is not going to be cheap for any one to pay for machine shop time if you cant do it your self.


    The final problem is the cable arrangment the ninja carbs have there cables on the other side of the carb. If you have a look at my build I have solved it and got it working smoothly. Click on the build link in the signature below.


    :1drink:1drink:1drink
  7. wide

    wide Been here awhile

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    Just picked up an 03 XT600E and wonder if dropping a couple of teeth on the rear sprocket say to a 43t it only makes it useable on long open roads, is it still OK for smaller back roads
  8. JensEskildsen

    JensEskildsen Long timer

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    Regaring Ninja carbs.

    From another thread:

    ---------------

    Wide: i use 16-46 for my roadwheels (equal to the 15-43 you think about), seems like a nice compromise if you dont do much technial offroad, and find yourself more on the streets and open roads. The gap from 1st to 2nd seems a bit longer tho', but nothing too big of a problem :)
  9. wide

    wide Been here awhile

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    Cheers Jens I did read your post on the Tenere forum and guessed you would answer. The bike is pretty good on the 15/45 but its just a touch slow on the road when you want to go a bit quicker for a couple of hours. I used to do this stuff on my XR400 but goin with a smaller rear sprocket to give a pleasant road speed and then swapping the front over was nice and easy and gave good off road gearing. Mind the Honda front sprocket could be changed in 5 mins with x2 10mm bolts, Im not so sure the XT is so quick
  10. G600

    G600 Been here awhile

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    Jens, how do you like the Ninja carbs? Big difference?
  11. JensEskildsen

    JensEskildsen Long timer

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    Wide:

    I modified the CS-sprocket-cover so I dont have to remove the gearlever when changing sprockets. So yeah, a 5min job aswell.

    G600:

    I like it, is not a big difference...Well hard to tell anyway. Did the modifying and the jetting over a long period, where it slightly improved from time to time. So I didnt get a big difference just bolteing it up. But it seems better. Also, I got my stock carb tuned in very nicely with a lamdba probe/meassuring-thingy... I actually needed to lean out the mainjets in it. I guess the difference would have been better if I'
    ve left the stock carb, well...stock :1drink


    My bike has almost 120.000km on the stock motor, so compression might be down a bit, which I guess isnt too great with 2x cv carbs. Im sure theese carbs would respond well to an oversize higher compression piston.

    Id do it again, I only regret not doing it before i spent a small fortune jetting and dynoing the stock carb. :shog
  12. wide

    wide Been here awhile

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    Cool what did you do to the sprocket cover Jens ??
  13. yamahaman

    yamahaman wannabe bike builder

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    My stock carbs were not tuned at all. I decided not to waste any time with them and went straight to the ninja carb and I have found there is not a heap of diferance when wide open throttle but there is a huge improvement everywhere else so I am very happy with my change over I just have a little backfiring on deceleration so I will go to a #40 pilot and see how we go

    :1drink:1drink:1drink
  14. thumpthumpthump

    thumpthumpthump Thumpthumpthump

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    Jens , what was your final jetting on the stock carbs?
  15. bosley1980

    bosley1980 Banned

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    Hello ALL,

    where I buy something like this
    [​IMG]

    OR THIS
    plastic cylinder
    [​IMG]
    [​IMG]

    please HELP ME?!:1drink
    THANK YOU
  16. thumpthumpthump

    thumpthumpthump Thumpthumpthump

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    The DR 650 Suzuki has a tool container like that in the same location.
  17. thumpthumpthump

    thumpthumpthump Thumpthumpthump

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    After reading what Jens had discovered from his dyno runs ,I made some changes with awsom results. I am running K&N pods and have had a lot of midrange issues. I am running a 135 in the primary and a 130 in the secondary. I raised the needle all the way in the secondary and wala! Mid range issues are gone. Pulls great from idle all the way to redline. Great throttle response. The exhaust note even sounds different. I still may be running a little rich on top but with summer heat that my be a good thing. Thanks Jen!
  18. Fred333

    Fred333 Adventurer

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    Hi Bosley,
    go to : ebay.de
    type: tooltube
    Or: werkzeugfach
    or: werkzeugbox
    or : werkzeugdose
    You´ll be surprised!
    ;-)
    Your footpegs are still great!!!!
    :clap
    Olli
  19. KOINZ

    KOINZ Adventurer

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    You might want to check this adv thread http://www.advrider.com/forums/showthread.php?t=565745

    Agri supply tool tubes. I bought two a while back pretty cheap.
  20. steveloomis

    steveloomis Been here awhile

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    Bosley,

    I love the footpegs, I haven't gotten the bike finished so have not ridden with them, but they feel great sitting and resting on them. Finish is great, look very strong and durable. I am anxious to try them out.

    Steve