Yamaha WR250R Mega Thread

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

  1. OldPete

    OldPete Be aware

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    google coolant cold leak, not all that uncommon.
  2. bhd1223

    bhd1223 Been here awhile

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    Just remember to top up when it comes time to ride again.
  3. Crawdaddy

    Crawdaddy Navigate 2 Adventure

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    I've started wearing a fleece in the mornings here in Sun Diego.....it's dipping below +50 :lol3
  4. jon_l

    jon_l Long timer

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    F*#@ing Californian!

    First dusting of snow of the season, and -5 C (23 F) as I write this. Both bikes are tucked away for their 5 month naps.

    Jealous Crawdaddy :1drink

    Keep posting your adventures so we can pretend we're riding.
  5. Ed@Ford

    Ed@Ford Long timer

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    I'd actually be concerned. Cars are usually 50-50 glycol water to give -40F freeze protection....but most pre-blended motorcycle coolants are blended for -20F....I'd quickly get one of thise cheapie eyedropper thingies with the multicolor floating balls to see what your coolant blend really is....I sure wouldn't want to freeze a $350 radiator for that WRR....they are made of tissue paper thin aluminum to get the best heat rejection with minimum weight....in the mean time I'd put it to bed with a 20watt light bulb near the radiator...lit of course!!
  6. jimrobinette

    jimrobinette Been here awhile

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    I don't think my bike has ever seen the freezing mark. :clap Come February, it will be four years since I've worn anything except shorts (except work, weddings and funerals) since moving to CA!!! :clap:clap
  7. HighFive

    HighFive Never Tap-Out

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    You're screwed!

    HF :deal
  8. Just Bob

    Just Bob Been There Done That

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  9. KaanDuro

    KaanDuro n00b

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    Where did you get the skid plate?
  10. mattias se

    mattias se 1975mandel

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  11. jgormley

    jgormley Been here awhile

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    Winter starting to set in here a bit in New England today...
    Boy do I miss the fall already....

    <iframe width="640" height="360" src="http://www.youtube.com/embed/VhS7z2dNpmM?rel=0" frameborder="0" allowfullscreen></iframe>
  12. livetofly

    livetofly Adventurer

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    My 08 WRX has an FMF exhaust, but it looks like some of the packing or filler material is starting to come out a little bit right by the exhaust opening. Someone looked at it the other day and mentioned that it could actually hurt the motor to be running the bike like that (something to do with too little back pressure). Does this sound right or was the guy just trying to get me to buy a new exhaust from him? Is there any way to repair it? Hopefully you can see what I'm talking about in the pictures.
    [​IMG]
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    Also, ever since I bought the bike I noticed where the pipe is a little bit crimped against the frame. Should I be concerned that that could cause a loss in performance, or is it not anything to worry about? Again, hopefully you can see what I mean in the pictures.
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  13. Mikef5000

    Mikef5000 Long timer

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    Oh see you're good! The lack of packing will cause excessive exhaust flow, but the kink in the pipe will hamper it! All works out in the end!


    The kink won't cause any noticeable problems (although I wouldn't think it should be there), just repack it and carry on.
    http://www.fmfracing.com/RiderSupport/RepackingInstructions
  14. skierd

    skierd Wannabe Far-Rider

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    You're missing the end cap and spark arrester, which is why you're losing packing material. When you repack, make sure you get a new end cap spark arrester both to keep the packing material in and to be legal when riding off road.

    The kink is there to get around the mount for the passenger peg and probably doesn't affect flow enough to notice.
  15. duanew1

    duanew1 In my Pajama pants

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    This is 100% correct. No spark arrester cap and the indention is there from the factory.
  16. leftystrat62

    leftystrat62 Adventurer

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    where's your ride-don't recognize it?
  17. what broke now

    what broke now Petroleum Brother

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  18. TwilightZone

    TwilightZone Long timer

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    >"some of the packing or filler material is starting to come out a little bit right by the exhaust opening. Someone looked at it the other day and mentioned ..."

    The exhaust packing should stay up in the front area of the pipe. I think it looks almost like somebody put some exhaust packing in the rear of the pipe. Maybe to compensate for removing the spark arrestor? If you run in Nat Forests (or wherever) you really need that spark arrestor. They are available... $34 dollars or so.

    Typically you have to re-pack the FMF exhaust in XXX hours of operation. Online MX shops sell the exhaust packing, (you can get various mfgs and grades) and you can probably pick some up at your local dealer.

    Remove the muffler from the bike, loosen the screws in the front, and remove the spark arrestor (if you have one). With a little persuasion, the muffler housing slips off the inlet side, There is a portion of the muffler where you re-load the fresh packing.

    IMHO:
    Two things from not having the packing.

    1) Loud as hell.
    2) Exhaust can vent into the packing area, which might cause muffler failure. (I think I saw this on ADV, where the muffler split open)

    Others have mentioned, the angular part of the muffler is 'normal' for this bike.

    How long have you had the bike?
  19. livetofly

    livetofly Adventurer

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    Thanks for the information, I got what I was looking for. Thinking I'll call FMF next week to make sure I get the right part #'s and order the spark arrestor, end cap, and packing material.

    I've owned the bike since beginning of summer, but sadly have not gotten to put nearly as many miles as I would hope (probly <1,000). I did think I perceived a difference to the sound of the exhaust the last couple weeks, so that's probably as a result of losing a little bit of that packing in it.
  20. krussell

    krussell Been here awhile

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    Hi All,

    Picked one up yesterday. Been thinking about it a while, something light and simple for rides that are mostly not pavement. I'm not worthy of the bike off road, but plan to acquire some skills.

    Had a break in the rain here in Portland, managed to get out this AM and get 110 miles in, about 1/2 pavement, 1/2 gravel. I am pleased, lots of fun. This thread was a big factor in choosing this bike. There's so much good information, and the ride reports are great. I'm 280, 6'4", so I'm riding two up all the time. Did a lot of up and down today, the bike drags my bulk well. Best transmission I've ever had on any bike. 56mpg on the first tank, but I suspect the dealer didn't fill it quite as full as I did.

    Thanks to all the inmates here for all the great info! Here's some new bike pics from the morning's ride.

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