Yamaha WR250R Mega Thread

Discussion in 'Thumpers' started by Sock Monkey, Apr 7, 2008.

  1. mtntrails

    mtntrails Been here awhile

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  2. KansasBob

    KansasBob Been here awhile

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    Originally Posted by yaw [​IMG]
    I just cleaned my spark arrestor for the second time in the last 1,000 miles or so. It was pretty dirty again. I've been riding a daily for short trips in the city and it's been pretty cold here (well, 30's and 40's). Should I chalk this up to lots of warm ups? Or is this a sign of something else going on? It's been running great, never a hickup. About 21,000 on the clock.


    Interesting........ it's been cool to cold on the days I felt like the bike was down on top end power. I need to check mine :hmmmmm
  3. GSBS

    GSBS FunHog

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    ...I've been using these for a couple of years now and have been very pleased.

    These photos from another forum are not of my bike, but show how they work:

    [​IMG]

    [​IMG]
  4. simonpig

    simonpig packin' heat

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  5. DefyInertia

    DefyInertia Saratogian

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    Missed that point, thanks.
  6. japako

    japako Been here awhile

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    I thought the rotor could be used on the WRR, but you would have to use a different bracket for the caliper. Or maybe you just use the caliper setup from the X?????
    I'm really not sure, but that sounds better than using the X hub.
  7. yaw

    yaw lost

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    Went to buy a Pirelli Scorpion Pro front tire but it lists two sizes. Anyone know the difference? 1) 90/90-21 54R
    2) 90/90-21. The first is about $5 more... Thanks!
  8. thumpididump

    thumpididump MacGyver

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  9. yaw

    yaw lost

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    Looks like the 54r refers to 467lbs of load and a speed rating of 106mph. So what is the rating for the cheaper version? I can't find anything online or on Pirelli's site. If in doubt buy the cheaper tire?
  10. yaw

    yaw lost

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    Thanks Thumpididump. I didn't see your post before I posted. Anyone have the cheaper version evidently without a rating?
  11. skierd

    skierd Wannabe Far-Rider

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    Anyone got a recommendation on new clutch plates? Mines starting to feel its age, and I think I want to try to preemptively replace it this winter while the bikes apart. OEM looks to be around $140 plus shipping, and has worked well enough so far. Aftermarket units any better, or just lower priced?

    Same question, but front brake pads. I have no complaints about the stock pads, except that the X's pad wore out twice as fast than the R's pads did. Any advantage to aftermarket really, and if so, suggestions?
  12. thumpididump

    thumpididump MacGyver

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    here's another.

    http://www.rockymountainatvmc.com/docs/motorcycle-tire-speed-rating.pdf


    Just for fun, I had a quick look at my Scorpion Rally, and it is indeed the 54R.... that's probably because I try to keep my speed just a hair under 106mph when I've got the front wheel loaded to 467lbs :lol3

    Personally, I wouldn't worry about it. If it were a supersport track bike, then maybe, but a WR? That same tire is often used on much heavier bikes, and will see much more abuse that most WR riders will throw at it.



  13. skierd

    skierd Wannabe Far-Rider

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    Oh no Lieutenant Dan, what happened to your legs?

    [​IMG]

    [​IMG]

    Since there's not a whole lot of interest, and I want a project bike anyway, I might as well take what I have and do her right by getting her back in to shape. Despite the cold temps, I went out to the 'garage' (the covered porch of my first floor apartment) and got to work. Pulled the wheels, pulled the forks, and pulled the rear shock. Tried to pull the rear swingarm, but it appears that the pivot is nice and stuck. :cry
  14. DougZ73

    DougZ73 Fading off.........

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    Getting the suspension redone Skierd?
  15. skierd

    skierd Wannabe Far-Rider

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    Thats the idea, unless an 11th hour buyer comes through. Or the first step of parting her out, depending on how the motor's compression check goes if I get to it this afternoon after the Super Bowl.

    First things first, I'm going to throw up some tarps to make my work area a little more enclosed and hopefully a few degrees warmer. The weather's currently ranging from -10 to +10F, and I'm hoping I can at least get to freezing with some tarps up to block off the space and a small space heater running outside. So glad I don't have to pay for electric here... Not gonna lie, Denmah's my inspiration to just get to work and not bitch about the weather.

    Suspension: Forks are going to Go-Race Suspension in Virginia for a complete revalve and rebuild. I've ridden a bike with their work done and it was excellent.

    Wheels: Replaced the rear wheel bearings today (which is what got me started). Either going to stay with the 17" X wheels, or go back to a 21"/18" setup, or both...

    Motor: 1st step, check the compression. If its healthy, I'm more or less going to leave it alone. The clutch is definitely on the worn side, so I'll be replacing the friction and clutch plates at least. If the motor isn't healthy... I'm not sure. Leaning towards sending the whole top of the motor to Thumper Racing for a big bore kit with head work.

    Misc: I'm going to strip the GPS wiring and consolidate the wiring for the FMF programmer, heated gear lead, and heated grips. I might go back to a DRC tail light instead of the stock whale tail. I'm planning to do lot more trail riding and possibly some track riding, so its time to get a set of fat bars and beefier hand guards. All of its current luggage is going away as its worn out, might get rid of the rear rack, and possibly just replace the tank bag. Its also time to replace the brake lines and brake pads, ensure the calipers are working right, etc. Also time for new clutch and throttle cables, if only for the mileage.
  16. DougZ73

    DougZ73 Fading off.........

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    Sounds like a good plan.

    My only current mods are to maybe get a set of SM wheels for weekday commuting, since they are talking about gas prices going up this year. I have the SV1000 as my street bike, but it gets better gas mileage than the truck, but the Wr250 will get even better mileage...and would be fun to commute on. If I can avoid getting raped on their cost, I'll get them....other wise it will be a 50/50 tire instead. :D

    To each is own, but personally, I'd stay away from any big bore kits. I think you lose reliability, which is a key point of my owning this bike. The "gas and go" is really something I love about it.
  17. DougZ73

    DougZ73 Fading off.........

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    Actually..along those lines....if anyone has a spare set of dirt wheels, or knows someone selling a set, let me know. May be cheaper to go that way with some 50/50 tires, and leave the full knobbies on my current wheels.
  18. oldtrucks

    oldtrucks Been here awhile

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    You probably don't want to hear that I had to mow my lawns this week.............
  19. Sewerat

    Sewerat Cert. bike whore

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    Well I can't seem to find the time or winter maintenance now. Found a new way to ride it.
    [​IMG]
  20. thumpididump

    thumpididump MacGyver

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    :thumb

    That looks like sooo much fun. :clap