1. 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     WR = 2st Enduro & CR = 2st Cross

125-200cc Have my 09 WR125 running awesome...

Discussion in '2 Stroke' started by Motosportz, Mar 8, 2010.

Page 2 of 2

  1. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    Motosportz, Mar 9, 2010
    #21

  2. R_Little Husqvarna
    Pro Class

    Location:
    NJ
    I may need one for my WR250 now that my TE250 is on the fritz.

    I see you have a 39mm listed....is it not a 38?

    Will it run right out of the box on a Wr250?

    I have a race sunday with no time to tune it.
    R_Little, Mar 9, 2010
    #22

  3. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    It is a 38mm sorry. Will correct, thanks. (Fixed now, hit refresh)

    It should be about as good to go as it can be. Of coarse your setup, pipe, muffler, area, altitude, temps and other stuff play a role here so there might be some tweaking. the Needle is SUPER EZ to change position on with the screw off top.
    Motosportz, Mar 9, 2010
    #23

  4. john01 Husqvarna
    Pro Class

    Location:
    Powhatan VA
    Thanks Walt and I can't wait to see what a 144 puts down. Ok K just let us know when the ship docks, thanks.
    john01, Mar 9, 2010
    #24

  5. MattR 2T Forum Clerk

    Location:
    Temperance, MI
    Husqvarna Motorcycle:
    WB165, SM610
    Other Motorcycles:
    Yamaha FZ1
    Kelly,

    What throttle valve cutaway will come with this PWK? Being from Michigan, I'm at about 600 feet elevation. I have a 6.5 cutaway from a previous bike. I'm wondering what our 125's will require by comparison.

    Thanks!
    MattR, Mar 9, 2010
    #25

  6. razornpc Husqvarna
    AA Class

    Location:
    iowa
    im thinking about upping my compression and going to race gas on mine, just wondering if anyone else has gone this route? been told if i go this way cylinder psi shoud be around 210psi as apposed to the 170-180 im used to. it will all depend on if i get the green bike sold and another 250 bought, that way i can trail ride the big bike.
    razornpc, Mar 9, 2010
    #26

  7. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    usually a good way to gain good bottom end power. :thumbsup:
    Motosportz, Mar 9, 2010
    #27

  8. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    I'll check again but think it is a 7.

    My house is at about 150 feet and it runs good here. Rode at almost 3800 and ran good there too.
    Motosportz, Mar 9, 2010
    #28

  9. water racer Husqvarna
    Pro Class

    Location:
    http://www.knoxenduro.com Knoxville, Tennessee
    Husqvarna Motorcycle:
    2013 Beta 250RR
    Other Motorcycles:
    2009 Husqvarna WR125 1997 Fantic
    I am glad we now have a PWK kit available for the 125, I have been hot to try one from day one.
    But now that I have all the changes to the PV (adjustment and springs) my Mikuni is working very well. Starts first kick hot or cold and will idle all day and runs clean all the way through.
    45 pilot for good roll on power
    kit needle in bottom clip (richest)
    #5 slide to clean up mid range
    450 main always has worked
    I am sticking with the mikuni for now, but if I start having trouble with temperture and elavation changes, I will get the PWK kit.
    GP
    water racer, Mar 10, 2010
    #29

  10. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    Yes, my Mikuni was working well too. Just wanted to try the PWK because it seems a lot of people go that route. I have also ridden and jetted my buddies 07 WR250 with the PWK and there was obvious gains there as well. I am in no way saying anyone needs it and the Mikuni can work well. IMHO the PWK does work better and offer more tuning possibilities.

    here are what i feel are the advantages over the Mikuni:

    1. better low end response, lugs better, and cleaner running
    2. EZer to work on and tune
    3. Slightly better mileage
    4. less finicky about temperature and altitude
    5. Way more needles to choose from
    6. Screw off top is EZer to work on, seals way better, makes needle changes a 1 minute job on the 125
    7. Has and EZ idle adjustment, no lock nut / screw
    8. starts better (never a real issue but it does light quicker)
    9. does not load up on long down hills like my Mikuni would / needed a few good rips before it would clean out. The PWK seems to stay clean running after long down hills.
    Motosportz, Mar 10, 2010
    #30

  11. pvduke Husqvarna
    Pro Class

    Location:
    ... on the gas...
    Husqvarna Motorcycle:
    tripple-hondo hoosk...
    Other Motorcycles:
    dozens of them, kicked to the curb
    kel- what piston did you use? OEM or....
    pvduke, Mar 12, 2010
    #31

  12. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    It is actually a very slightly use piston Walt gave me at Moab, so stock. Will be replacing soon with a Weisco.
    Motosportz, Mar 12, 2010
    #32

  13. pvduke Husqvarna
    Pro Class

    Location:
    ... on the gas...
    Husqvarna Motorcycle:
    tripple-hondo hoosk...
    Other Motorcycles:
    dozens of them, kicked to the curb
    copy ditto thanks. :cool:
    pvduke, Mar 12, 2010
    #33

  14. razornpc Husqvarna
    AA Class

    Location:
    iowa
    why not stock? ive always heard so many good things about the stock pistons.
    razornpc, Mar 12, 2010
    #34

  15. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    1/2 the cost and never had an issue with Wiesco. Not sure why but they always seemed to make more power than the stock piston on my WR250 rebuilds as well.
    Motosportz, Mar 13, 2010
    #35

  16. wallybean Mini-Sponsor

    Location:
    Montana
    Kelly,

    The new forged Vertex piston is pretty nice. A little lighter than the Wiseco and has the electro coated skirts too. Just another option.

    Walt

    I had one of both and compared them side by side.
    wallybean, Mar 13, 2010
    #36

  17. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    I thought the Vertex was a Weisco with some coating on it?
    Motosportz, Mar 13, 2010
    #37

  18. wallybean Mini-Sponsor

    Location:
    Montana
    Kelly,

    Very different pistons. Vertex was sold to a new owner in 08 and has pursued their own line of forgings. Just what I have read when doing some google searching last year. Side by side they don't look like the same manufacture at all but you never know out here in sticksville.

    Walt

    PS, who knows if maybe Vertex is jobbing their pistons out to Wiseco?
    wallybean, Mar 13, 2010
    #38
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