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Long term KLX250S review

Discussion in 'Thumpers' started by bmwhd, Dec 2, 2005.

  1. 1994klr250

    1994klr250 Long timer

    Joined:
    Aug 16, 2007
    Oddometer:
    1,289
    Location:
    Southeast michigan
    Yep I've had to use it in the past. I had a battery fail completely when I stopped for a break while I was out riding. The kick starter saved me in that situation. I put the kick starter in it at the same time I did the 351 big bore and when the bike is warmed up it usually starts with one kick. If the bike is cold I haven't gotten it down to getting it to start all the time with the kicker. The 351 is definitely harder to kick over compared to my 94 klr250.
  2. Type6ix

    Type6ix n00b

    Joined:
    Aug 2, 2018
    Oddometer:
    8
    Location:
    NJ
    It's definitely good insurance. Just very expensive.
    BTW, I had a 1989 KLR 250. Should of kept that one. Reliable and comfortable.
  3. sbeadg

    sbeadg Found in Fogo Supporter

    Joined:
    Jun 10, 2013
    Oddometer:
    386
    Location:
    God's country aka W. Mass
    I do have the Mikuni pumper carb on my bike. Do you happen to recall specifically what modification is required?
    Love your rig.
  4. Twnspin

    Twnspin Been here awhile

    Joined:
    May 29, 2018
    Oddometer:
    154
    Location:
    Pennsylvania
    I went back and forth between the acerbis and Clarke and finally ended up with the Clark, it provides pretty decent range. And keeps the stock/ slim profile of the bike. If your really doing a lot of miles i suppose the extra capacity is worth it but i believe you will want to rig up a pump system to keep from having to tip the bike over to Get all the fuel out.
  5. UtahGuido

    UtahGuido Long timer Supporter

    Joined:
    Nov 29, 2007
    Oddometer:
    11,512
    Location:
    Spine 'O the Wasatch
    I put a kick start on my 351 and for a while I was at about 80% getting it to fire with the kick, before pushing the button. Then, mysteriously, things changed and i can rarely start it with kicker now. Occasionally it will fire (once when it actually kind of saved my ass) but it’s to the point now where I basically ignore it. The LiPO4 battery has been very reliable so I just use the starter but sometimes I’ll give it a stab for the novelty, and sometimes I’m surprised.

    Full disclosure - I modified the foot peg mount on that side so I may be getting less than optimal swing on the lever.
  6. Type6ix

    Type6ix n00b

    Joined:
    Aug 2, 2018
    Oddometer:
    8
    Location:
    NJ
    "Full disclosure - I modified the foot peg mount on that side so I may be getting less than optimal swing on the lever."

    Funny you mention that. I just resurrected a 1982 CR 480R that hadn't started in 30 years.
    It took me awhile but eventually I realized I needed to use the very tip of my boot in order to clear the foot peg in order to get enough swing. Left hand kick too!
    UtahGuido likes this.
  7. 1994klr250

    1994klr250 Long timer

    Joined:
    Aug 16, 2007
    Oddometer:
    1,289
    Location:
    Southeast michigan
    I still have the stock carb, but I remember seeing that the top half of the throttle wheel on the carb needs to be cut off and the return cable can no longer be used. I have a Mikuni pumper carb, but I've just never gotten around to putting it on the klx because I'm actually quite happy how it runs.

    Thanks I've done so many mods to this bike. It's been a fun build, when I got it the bike was completely stock with only 800 miles on the odometer. I honestly can't remember all of the mods I've done, but it's set up perfectly now.
  8. 1994klr250

    1994klr250 Long timer

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    Aug 16, 2007
    Oddometer:
    1,289
    Location:
    Southeast michigan
    Good point on how the Clarke tank keeps the bike a bit slimmer. I went with the Acerbis 3.7 gallon tank with the wings that go on the outside of the radiators. I actually just ran my tank dry about a month ago and found the absolute limits of my fuel range and how much I could put back in the tank after running reserve dry and then leaning the bike over to the left to get a bit more fuel to the petcock. Acerbis shows that its a 3.7 gallon tank when I ran it empty on reserve I limped it to a gas station one mile away and put in 3.65 gallons. I don't have a pump to get the last few drops out of the extreme corners of the tank. Just lean it to the left if you run it dry on reserve it will get you a few miles if necessary.
  9. sbeadg

    sbeadg Found in Fogo Supporter

    Joined:
    Jun 10, 2013
    Oddometer:
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    Location:
    God's country aka W. Mass
    I have what must be a Clarke tank on my 351 big bore and because I'm getting about 50mpg's my range is still only about 125 miles before I hit reserve and I'd really like more, just because. The season's about over it seems so I'm going to change fluids etc. this winter. I've got a Pelican knock-off for a top box and a 1 gallon Rotopax would fit nicely on top of it. I may just go that route.
  10. 1994klr250

    1994klr250 Long timer

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    Aug 16, 2007
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    Location:
    Southeast michigan
    I get 50 mpg as well with the 351 and a 15 tooth counter sprocket. Last tank of gas I went 165 miles on the main tank and 20 miles on reserve with the acerbis tank. I found out that the main tank is about 3.25 gallons and reserve about 0.4 gallons, there's only a tiny amount of fuel in the tank by the time reserve is empty.
  11. dpippin

    dpippin Been here awhile

    Joined:
    Aug 8, 2005
    Oddometer:
    320
    Location:
    Hoopers Creek NC (Asheville)
    You can find information on the Mikuni Pumper installation here;
    http://dpippin.com/klx/home_files/Page2630.htm

    Doug
  12. sjc56

    sjc56 Long timer

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    Oct 26, 2006
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    Broad Brook CT USA
    This thread has me sold. I'm looking at a 2009 KLX to replace my XT350 that I have a love hate relationship with. While i'm sure I'll love the E start and better suspension and lighter weight, it looks like I will have to install the 351 kit to get close to the XT's low end grunt which is one of its endearing traits. How is the 351 kit on the highway? The XT is fine at 75 for those trips up north.
  13. sjc56

    sjc56 Long timer

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    Okay drunk the cool aide bought the bike seems to run well but of course when I get it home and start it from cold I notice a ticking sound from the right side of the valve cover. Normal? Bike only has 5 K on it.
  14. sjc56

    sjc56 Long timer

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    Ticking went away after the bike has warmed up. Should there be a chain guard of some sort?
  15. markk53

    markk53 jack of all trades... Super Supporter

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    Dec 20, 2007
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    Does the bike have a manual cam chain tensioner on it? If so as long as it is quiet after warm up you're good, otherwise it needs a slight adjustment. The tensioner will look like this:
    KLX250 another shot..jpg

    If not, it might be getting to the point where the OEM one is starting to fail. Usually a rattle on the right side around 4000-6000 rpm.
    GhettoCanuck, bultacobill and Klasjm like this.
  16. sbeadg

    sbeadg Found in Fogo Supporter

    Joined:
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    Oddometer:
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    Location:
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    Confirmed that FMF doesn't make a Q4 for '06-'07 bikes. I don't want to risk spending for a too loud some other aftermarket pipe so bought a used one from eBay.
  17. sbeadg

    sbeadg Found in Fogo Supporter

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    Oddometer:
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    Location:
    God's country aka W. Mass
    I don't have a lot of history with my big bore but when I got mine it had a 13 tooth front. I installed the stock 14 and find it is fine at 65 but haven't had run it for long at 75.
    Depending on how much of your riding is highway, I think you could go up a tooth to 15 without sacrificing too much grunt. I'm still surprised at how well the bike pulls. There's a steep hill near me that I can take at 4k rpms in 4th and it just pulls fine. Otherwise, I'd try the stock gearing, knowing you can always go up a tooth. I have plenty of throttle left at 65. Your mileage will definitely suffer with either counter sprocket, of course.
  18. sjc56

    sjc56 Long timer

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    It has the stock tensioner , clicking sound goes away when warm. Sounds normal at hi revs.
  19. sjc56

    sjc56 Long timer

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    Another odd thing was the fan wasn't mounted, I put it in when I got home, tested it on a battery at first and it works.
  20. bultacobill

    bultacobill Long timer

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    Dawson PA
    I bought an FMF pipe and installed a Q4 insert for my ‘06. Same result.