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

250-500cc WR 300 porting?

Discussion in '2 Stroke' started by WR Chris, Apr 2, 2013.

  1. WR Chris Husqvarna
    A Class

    Location:
    Philadelphia PA
    Husqvarna Motorcycle:
    WR 300
    Other Motorcycles:
    Kawasaki KX250F
    I'm new to owning a 2012 Wr 300 (6.8 hours new) and I was having issues with it falling flat in the mid range. This was after putting on the pwk carb also so I took it to a well known fellow near me to dyno tune it. While its there I have the option of porting it out and was wondering if anybody out there has done this? Is it worth while to create more power all around? Am I wasting my time and money? Any feedback is much appreciated!
    Cheers!
    Chris

    Attached Files:

  2. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    98 WR360, 1987 WR430, 1988 XC430
    Other Motorcycles:
    Sherco 300, 2002 KTM 380EXC
    I would take a deep breath before going in any direction, the bottom pulling power is what makes it so great to most
    now let me say I have a 360 and not a 300, albeit the same architechture a different bore stroke combo
    on the 360 the word is to reshape the intake behind the carb as it seems to be the biggest constraint past lower mid range
    I was getting ready to do that to mine also and will post results
  3. nonamerider Husqvarna
    AA Class

    Location:
    Oklahoma
    porting yes iam porting one right now .2premo is correct slow down .make sure your jetting is correct. pipe combo is what you want. gearingis usually to tall. head mods are important 250/ 300s.stock huskys have that double power band.problem is in pv design /jetting/gearing.300 porting is different than 250 slightly .port timing is good on both .husky copied honda cr 250 port timing wich was great.you can fix your probem with out porting.porting will help . do other mods first and you will get to know your bike that much better.huskys improve dramatically with small adj .this in my opion shoud have been done at the factory.
  4. Johnnymannen Husqvarna
    AA Class

    Location:
    Sweden
    I would like to know hoiw it's jetted and what needle you use at your temp and elevation.
  5. Glenn haynes Husqvarna
    AA Class

    Location:
    western pa
    Husqvarna Motorcycle:
    2012 wr300
    Other Motorcycles:
    13 yz250f 08yz85 11ktm 65 09 ktm65
    I bet your using a jd needle,I had the same issue.Try a CEL needle in the middle clip. You can get them shipped to your door for $9 on Ebay. Huge improvement over the jd needles.
  6. troy deck Husqvarna
    Pro Class

    Location:
    Republic MO
    Husqvarna Motorcycle:
    87 250wr 12 cr125
    Other Motorcycles:
    kx65 ty80 rm80 kdx250
    yep i'd fiddle with the carb you can't unport it if you don't like it your screwed why did you not get a lectron?
  7. WR Chris Husqvarna
    A Class

    Location:
    Philadelphia PA
    Husqvarna Motorcycle:
    WR 300
    Other Motorcycles:
    Kawasaki KX250F
    It is the JD kit, blue needle I believe. 175 main, southeast PA, 50's when I rode it. I went with the pwk because of availability and the fact I didn't know anything about the Lectron when I purchased it. Prior to finding this phenomenal site! I dropped it off to a guy around me who's been in the business forever, always kept me happy. I'm gonna hold off on porting it and see what its like when I get it back. Ill keep ya'll posted with results. Thanks for the input!
  8. Glenn haynes Husqvarna
    AA Class

    Location:
    western pa
    Husqvarna Motorcycle:
    2012 wr300
    Other Motorcycles:
    13 yz250f 08yz85 11ktm 65 09 ktm65
    I'm in southwest pa,My jetting is 45pj 172mj and CEL needle in the 3rd clip. My bike does not like anything above a 172mj,once it is above 60 I will drop it to a 170mj. The blue needle is very rich,the red is better but wouldn't run clean unless it was in the leanest position.
  9. R_Little Husqvarna
    Pro Class

    Location:
    NJ
    I have 175M Red in the middle and a 42 pilot and the bike runs clean all around....starts 1st kick and pulls great all over. Sounds a liitttttttlle pingy in the mid range but gets 22 mpg in So NJ enduro racing.