Results 1 to 4 of 4

Thread: jetting help

  1. #1
    Rider Johan's Avatar
    Join Date
    Nov 2014
    Location
    Ontario
    Posts
    8
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Feedback Score
    0

    jetting help

    I have a esr310pv motor stock stroke crank (88) curtis sparks pipe, boyesen rad valve and a 38ml carb. I have read countless posts saying that people are running 175-18? Main jet, i am at 300ft above sea level and i cant get mine to run any bigger then a 158 main. Any bigger and it crackles top end and fouls plugs, the plug is perfect in colour and have done countless plug drops. Is this a problem?

  2. #2
    Racer dirtyd's Avatar
    Join Date
    Jul 2013
    Location
    warren MI
    Posts
    175
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Feedback Score
    0
    Sent from my ZTE V768 using Tapatalk 2

    Are you running stock air box with lid and snorkles? If so that could be why or something could be in the snorkle blocking it. Also is air filter clean? You can also over oil a filter too
    87 trx250r- ESR 310 (trx9 porting) trx5 pipe, 38mm A/S, +2 a-arms. works triple rates.
    86 trx250r- basically stock (SOLD)
    05 Predator 500- some bolt on stuff
    87 Tecate4- new project

  3. #3
    Rider Johan's Avatar
    Join Date
    Nov 2014
    Location
    Ontario
    Posts
    8
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Feedback Score
    0

    jetting help

    stock airbox, i change my a/f every ride. i have 40 in stock lol. snorkles are clean. i keep my bike in my basement

  4. #4
    Rider Johan's Avatar
    Join Date
    Nov 2014
    Location
    Ontario
    Posts
    8
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Feedback Score
    0

    jetting help

    4 not 40

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •