Yamaha WR250R Mega Thread

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

  1. byron555

    byron555 Lame Duck Adventurer

    Joined:
    Oct 30, 2007
    Oddometer:
    1,142
    Location:
    Central Wisconsin
    Here is my set up. I originally made the hwy pegs for my XR650L and just recently I added the tabs to accept the tool tube. I am worried the tire may hit it on full suspension compression.

    [​IMG]
  2. coresports

    coresports coresports

    Joined:
    Aug 3, 2011
    Oddometer:
    378
    thanks for the reply..i will pass on them and use the $$ towards a spare set of seals.


  3. ramz

    ramz Professional Trail Rider

    Joined:
    Dec 11, 2006
    Oddometer:
    2,129
    Location:
    Salida, CO
    Did you plug the vent hole? I imagine you would get water inside the tube if you didn't. Have you tested it in mud and water conditions - partial or full immersion?
  4. AZ TOM

    AZ TOM Long timer

    Joined:
    Oct 21, 2008
    Oddometer:
    4,499
    Location:
    Prescott AZ
    I thought you sold your WRR?:D
  5. KansasBob

    KansasBob Been here awhile

    Joined:
    Apr 27, 2008
    Oddometer:
    515
    Location:
    Topeka
    The left hand fork slider will rub the plastic guard on all WRR's if you don't heat them up and bend them out of the way. When you ty-rap a seal saver to the top of the slider it's even more prone to rubbing.

    I have ridden with riders using seal savers when it's raining and muddy, and they don't skim the muddy water off the fork tube, and to make things worse they trap the muddy water under the seal saver which turns them into sand paper. After I saw that I made the decision they weren't for me.
  6. pfy50

    pfy50 Professional nOOb

    Joined:
    Aug 25, 2006
    Oddometer:
    591
    Location:
    Oneida, Tenn.
    Help with vacuum pump needed. I have a new (1 mo.) Safari tank. I was doing its first test to see what range I could expect out of it, and it ran out of fuel at 155miles with fuel still left in the wings. There is fuel in the two lines coming from the wing pickups but it is not going to the fuel pump. As soon a I put fresh gas in above the bottom of the fuel pump the bike began running again. Does this mean the vacuum pump is not working?:cry All I can remember is that there appeared to be some fuel spraying near the rear of the fuel pump in the area of the vacuum pump when first installed last month. I am not seeing any now. Fuel appears to feed; thru the vacuum-fuel pump feeder hose; only when sufficient fuel in tank to cover bottom of fuel pump. :huh
  7. Sewerat

    Sewerat Cert. bike whore

    Joined:
    Jun 27, 2010
    Oddometer:
    1,533
    Location:
    Brooksdale, ON
    And that is the reason I never opted for a cheap vacuum pump to feed the expensive injected pump. I was willing to carry my extra gallon in a rotopax.

    Sorry I can not help you but chances are your vacuum line has fallen off or been pinched someplace. Also remember that a motor creates its highest vacuum at idle so under wide open throttle where you need the most gas the pump is being starved of its vacuum to keep it running. I know they work for others but not going on my bike.
  8. Subaru297

    Subaru297 Been here awhile

    Joined:
    Aug 20, 2011
    Oddometer:
    118
    Location:
    Calgary, AB
    I own a 2008 WR250X and a recently purchased 2011 KTM530EXC. I initially purchased the WRX for a commuter bike and 3 years later it still does that duty well. I took the WRX on a longish adventure ride after fitting some dirt worthy 17" tires and it did pretty well overall. It did great offroad when speeds were a bit lower but after riding highway for a few hours chasing GS1200's I knew I wanted something with more power. That is my only complaint though. The bike is reliable, comfortable, and fast enough 90% of the time.

    I purchased a new 530 EXC and built it into this;
    [​IMG]

    I have been very happy with it so far. It lopes along on the highway at a fairly low rpm, has minimal vibes (comparable to the WRX) and is just as comfortable after an updated seat. For long highway jaunts I prefer this over the WRX. And once offroad it is no contest.

    But.......I don't commute on it so I don't rack up a lot of kms. It is new still so I haven't had to do more than oil changes and valve checks but I am amazed at how easy it is to work on though. Valve checks are probably 30 minutes without having to adjust. The only thing left to do is an oil cooler so I can extend oil changes. I would almost rather work on this more often than have to work on the WRX just for that simplicity.

    Although that being said there is something comforting about the little blue bike and if I had to choose one bike to do it all it would be a WR450R! :rofl Oh, sorry make that a WR250R. I would build it up just like the KTM. Big tank, Lynx fairing, and some wolfman racks. And I would be more relaxed and happy, but I would still long for the ability to loft my front wheel in the air from time to time.

    I think if your riding is more often offroad and short highway or city trips I would stick with the KTM's but if you are putting on a lot of miles the Yamaha would simplify things. Or you can wait and let us all know how the new 350 freeride is!

    I would recommend getting rid of the WR250F and looking around for a good used WR250R and then you can compare the bikes yourself and see what fits best.

    Cheers
  9. Scott_PDX

    Scott_PDX Leisure Engineer

    Joined:
    Oct 18, 2010
    Oddometer:
    4,578
    Location:
    Portland...the newer one on the left side.
  10. clapped_r6

    clapped_r6 The Spoad Warrior

    Joined:
    Jan 3, 2006
    Oddometer:
    3,109
    Location:
    Ridgefield, WA
    nope. do you still have the black plastic "deflector" right behind the fan? have you richened it up at all?
  11. Gryphon12

    Gryphon12 Long timer

    Joined:
    Aug 10, 2006
    Oddometer:
    1,425
    Location:
    Carnation, WA USA
    Ther 350 Freeride is a hybrid TRIALS (not trails) bike. I has a 1.5 gallon tank, ultra light-weight everything (alloy and plastic), minimal stator / alternator and is designed for weekend exploring in the woods at a moderate pace (professional marketing videos excepted). To me it has NO buisness as a long distance adventure bike platfom. Modifying a 350 / 500 EXC, however, is another story.
  12. Sewerat

    Sewerat Cert. bike whore

    Joined:
    Jun 27, 2010
    Oddometer:
    1,533
    Location:
    Brooksdale, ON
    I have the rad guard on and took the bike to Florida at Xmas at that time I did not have a fan working. Engine ice and keeping the bike moving kept enough air to keep the light off.
  13. monkey

    monkey Adventurer

    Joined:
    Aug 29, 2007
    Oddometer:
    38
    Location:
    Manly Sydney Australia
    I have 2 questions if anyone can assist :-

    1/ Does anyone know if they still manufacture Sweet Cheeks seat covers? It appears there website no longer operates.
    Perhaps I should get the Airhawk seat cover?
    2/ Can I run 14/43 sprocket setup successfully? I've the Athena BB kit on road tyres and the WR seems to over-rev at
    highway speeds ( in Oz that's 100-110 kph or 60-65 mph). I'm planning a 700 klm highway trip soon, rider and gear
    will weigh in at approx' 100 kg (220 lbs) so I guess it's not too heavy.

    Thank you in advance once again, John.

    Edit. Oops, currently running stock 13/43 sprockets.
  14. 1Down-5Up

    1Down-5Up Been here awhile

    Joined:
    Jun 18, 2012
    Oddometer:
    115
    Location:
    Northern Ontario
    Well you better pack, our Mattawa to Sudbury off-road ride is leaving in early September.
  15. GSBS

    GSBS FunHog

    Joined:
    Nov 22, 2005
    Oddometer:
    3,976
    Location:
    Blount Springs, AL
    Most folks need to go the other way, but maybe the Athena kit adds enough ass to make it practical to gear up instead of down.

    My WR-R came with 13/43 stock and it needed gearing down to pull hills in sixth and I'm around 200 pounds with gear. I first went down to a 12T on the countershaft, then the chain ate my swingarm guard. Now I'm running a 13/47 combo with an oversized trials tire (taller profile) and it seems about right. YRMV.

    One thing is switching out CS sprockets would be relatively inexpensive to try. Be aware that the CS sprocket on this bike will be a real bitch to remove because they use some kind of super Locktite at the factory. Had to use a pneumatic impact wrench on mine the first time (make sure bike is in neutral if you do this!). But after the first time it's a five minute job to change out CS sprockets - just remove nut, replace sprocket, reinstall nut, adjust chain.
  16. simmons1

    simmons1 Long timer

    Joined:
    Jan 2, 2006
    Oddometer:
    1,759
    Location:
    Out Riding
    Try here:

    http://cycle-analyst.com/sweetcheeks
  17. GSBS

    GSBS FunHog

    Joined:
    Nov 22, 2005
    Oddometer:
    3,976
    Location:
    Blount Springs, AL
    I have the IMS 4.75-gallon tank (it actually held 4.82 gallons) and ran it out of gas on purpose as a test right after installing - 237 miles riding hard - and there was still around 1/2 gallon in the wing bottoms.

    I've since learned that the vacuum pump/fuel pump on these tanks needs a modification to allow it to use that last bit of gas in the wings. It seems the fuel pumped up from the lower wings by the vacuum pump exits from a hose spewing upward at the top of the stock fuel pump and once the level gets below a point where it can puddle around the stock pump it's starved for gas. The solution some have done is to place a dome-shaped piece of aluminum or plastic above the outlet hose from the vacuum pump to deflect the spewing fuel downward where it needs to go.

    Maybe I'll make one of these deflectors next time I need to remove the tank. But hey, after having to search for gas beginning at 70 miles with the stock tank and now not having to worry about it until over 200 miles, it hasn't really been a problem. I haven't been too concerned about that last half gallon (good for maybe another 25 miles?) in the wings.

    And carrying extra fuel in a Rotopax or similar (I had a look-alike 1.5 gallon can in another brand) always seemed silly to me compared to a larger tank because where ever you put the extra gas can is not going to be as efficient or balanced as just having a larger tank. The times I carried it on trips - mine was mounted to the tail rack - it always seemed in the way and filling it or using it to fill the stock tank was always a hassle because I had other stuff strapped atop the gas can. Besides, even if I carried an extra two gallons in Rotopax strapped to the bike somewhere I'd still have less useable fuel than with my tank, even taking into account the bit that cannot be used at present.
  18. ADVCoop

    ADVCoop Been here awhile

    Joined:
    Aug 22, 2007
    Oddometer:
    813
    Location:
    Acme, PA
    I actually like the stock gearing. I am 210lbs. If my bike won't pull a hill in 6th, there's this thing called a gear shift and I just click it down once or twice and it's good to go :D .
  19. pfy50

    pfy50 Professional nOOb

    Joined:
    Aug 25, 2006
    Oddometer:
    591
    Location:
    Oneida, Tenn.
    TNX GSBS,

    I think Sewerat was writing in response to my inquiry just above him. In the Safari tank the scavenged fuel from the wings is brought up by the vacuum pump and thru a second line is dumped directly to the primary fuel pump pickup.(theoretically:lol3). My vacuum pump doesn't seem to bring the fuel down (thru the secondary line) to the fuel pump sump area even though there appears to be fuel in the wing pickup lines. The reason I went with the larger tank was so I could get a 200 mile range without resorting to the extra weight of the rotopax/koplin method and expense, and just carry a rolled up 4L. fuel bladder for those few times when I may need it up in Canada or Alaska (need a 250 mile range)
  20. Krabill

    Krabill Long timer

    Joined:
    Oct 25, 2005
    Oddometer:
    4,945
    Location:
    Tulsa, OK
    1) I have no idea

    2) Stock will work, but you'll be using 5th gear a lot and winding it up even further than you would if you'd gear it down to 13/46 or 13/47 and keep it in 6th.