Yamaha WR250R Mega Thread

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

  1. Border411

    Border411 Been here awhile

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    Nice. What muffler is on that? It sounds great. i also love your license plate as seen in the video. AWESOME SAUCE FTMFW!
  2. BMW-K

    BMW-K F800GS FTW!

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    HAHAHA! Hell YES AwesomeSauce! FTW!

    My best friend ordered the plate WEAKSOZ for his S1kR - I ordered AWSMSOZ the same day. Here they are, Twin bikes, in all their glory outside Manic 5. (*Pssst! Please don't tell the S1kR it's not a dirt bike!)

    P9201718.jpeg

    The pipe is an FMF without the quiet core installed. It helps that I took the vid in the garage and it had a great resonance. :)
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  3. GSBS

    GSBS FunHog

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    Loving the Britannia Composites Lynx Faring and dashboard. Great lights, GPS mount, 12v and usb outlets, wind protection. Worth every penny, especially at night! 28DBBE26-B5CE-4CB0-88DC-2F7AF0D1CA80.jpeg
    FF632FE0-6862-4E46-AF65-8A8100C98E85.jpeg 04DF91E1-469A-4217-B350-D98DC7A13BEB.jpeg
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  4. Lee Dodge

    Lee Dodge Been here awhile Supporter

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    What seat is that?
  5. GSBS

    GSBS FunHog

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    Purchased from Rick Mayer Cycle. I don’t think he’s still in business, but not sure.
  6. eakins

    eakins Butler Maps

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  7. BluePill

    BluePill AARP Slacker

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    Somewhere early in this thread, maybe about 2010 or so, there was a discussion about pump failures. Someone had a link to a recall in certain Asian countries where Yamaha stated that the production clearances of the pump's rotors were too tight and could eventually bind and make the pump stall. No reference to ethanol as a contributor was made. Maybe in Asia they don't have "Big Corn" lobbies who buy their lawmakers with campaign contributions?

    I know from first hand experience that ethanol can make non-resistant plastics swell. I had an old Poulan chain saw built in the 1990's that had the gasoline fill plug swell until it was no longer usable. I also have 2 MSR fuel cans. I used one with E-10 fuel, and the plastic plug started binding from expansion. The other only got No-E fuel and works fine.
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  8. eakins

    eakins Butler Maps

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    My 08 oem pump unit said Made in China.
    I bet everyones pump says the same thing.

    The replacement Kemso also said Made in China, even though they say Japan. I suspect most every pump in use on every bike is Made in China. It works so what can you do?

    That issue was a mfg clearance issue and binding when hot, not an ethanol issue.
    The WRR pump is used in alot of Yamahas. They all had problems those years.

    I'm suspecting the fpr failure is a different issue. The bike was stored and thus gas sat in it and probably funked it all up inside.

    In the end blue marine Stabil or Startron are the best answers. I long term store with marine Stabil. The red stabil is shit.
    https://www.amazon.com/STA-BIL-22240-Marine-Vapor-Technology/dp/B001CAW2DK
  9. SMIFFXC

    SMIFFXC Been here awhile

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    Ethanol will absolutely do bad things to plastic tanks. My buddy has a Ducati 848 Nicky Hayden edition (garage queen) and ethanol made the paint on the tank bubble up. Well, guess where Nicky signed them all...on the tank. Took months but Ducati had him sign another tank (luckily happened before his death) and ship it to the dealer who had the inside coated first then reinstalled on the bike. The silver lining is now he has a custom signed tank as Nicky added his # to the signature unlike the original. He also has the original tank on display in his man cave.
    So without question when I winterize the bikes I treat all the fuel and run them a bit to get it all through the system then metal tanks get topped off and all plastic tanks are drained completely and the bikes are run until no fuel is left in the system. This has worked for me for years with no problems.
    Oh, and the fuel cap on my cheap Poulin chainsaw is a bitch to get on and off as well. :lol2

    Side note, I also put an exhaust plug in all of them. Same friend had mice pack the exhaust of his Multistrada full of dog food. $2500 for a new aftermarket one. I figured that is cheap insurance. Every year I text him a pic of mine with the exhaust plugs in it when I put them away...friendly reminder and all. lol
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  10. Yinzer Moto

    Yinzer Moto Sloppy 300 rider Supporter

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    The WR was introduced in 2008, ethanol has been in fuel for a long time at that point, if Yamaha is putting incompatible plastic in the fuel system, that is inexcusable. I doubt they are. Most automotive tanks are plastic, manufacturers have this figured out now. With the exception of some European manufacturers. The other day I read on this site where a guy with a new KTM 790 is having fuel issues because of ethanol, that is inexcusable on the manufacturers part. I have a Scorpa trials bike where the tank is warped because of the crap. That is to be expected from little manufacturers.

    I have run all types of junk fuel through the WR and the bike does not care. I spent 2 weeks in Mexico, this past spring, most of our fuel came out of unlabeled barrels and jugs that were along side of the road. Only a handful of fill ups were from real fuel pumps.

    I have not experienced a WR fuel pump failure but from the reports that I have heard about, it is a typical electric motor failure. When the pump cools down, it will work again. If it were ethanol related, it would be locked up permanently.
  11. GSBS

    GSBS FunHog

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    I've had my 2010 since new in 2010, always used fuel with ethanol, never an issue in 40k miles. The fuel pump issue was a big topic on this and other forums not long after I got my WR-R nine years ago. My understanding is that some 2008 models (somewhere on this thread is a listing of "from" VIN-xxx "to" VIN-xxx) had defective fuel pumps. After the 2008 models (first year for the WR-R) Yamaha apparently got the problem resolved.
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  12. Circus Bear

    Circus Bear FKA oldsteed Supporter

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    :deal

    I'm still running the original pump on my 2008. No issues yet, but I have a replacement ready when it fails. I run 87 in it with no issues and only put ethanol free gas in there when I know it will sit for a while. I have other bikes that only get ethanol-free, but the WRR is tough enough to handle it.
  13. woofer2609

    woofer2609 Less flow, more Gnar

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    Well now you've done it!
    I definitely notice more green oxidation in carburetors that have sat with ethanol gas in them than I used to. I try and let the bike winter over with a tank of Seafoamed Chevron 94 octane.
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  14. coresports

    coresports DS4Life

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    Me too...2008 WRR original pump...bone stock bike.

  15. PlowHand

    PlowHand Ancient, ugly and happy :-) Supporter

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    Seafoam is the best invention since the wheel - or the carburetor - or the fuel injector.
  16. eakins

    eakins Butler Maps

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    It was just a pump supplier issue and that supplier building the pump slightly different so it does not bind when hot.

    I just replaced my 08 proactively.
  17. eakins

    eakins Butler Maps

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    Seafoam was in the bike that had a fuel pressure regulator go bad from sitting.
    Yes Seafoam is loved but never really claimed as an ethanol solution unlike
    https://www.goldeagle.com/product/sta-bil-360-marine/

    I use this for winter storage and Walmart has it on the shelf. Avoid the cheaper Stabil red, it's for storage but not storage and ethanol.

    https://www.amazon.com/STA-BIL-22240-Marine-Vapor-Technology/dp/B001CAW2DK

    Or
    http://www.starbrite.com/startron
    Which is available at Napa.

    https://www.amazon.com/Star-Tron-Enzyme-Fuel-Treatment/dp/B002E9A6PO
  18. Border411

    Border411 Been here awhile

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    Best avatar I have seen....FYI
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  19. PlowHand

    PlowHand Ancient, ugly and happy :-) Supporter

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    Thanks, my girls are getting old like me but unlike me they are still cute. :-)
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  20. Border411

    Border411 Been here awhile

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    Dont sell yourself short. Every night when I look in your window you still look good. I mean....um....disregard.
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