Home Forums Shifter Karts Pilot jet and idle tuning help ! Keihin pwk 38

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This topic contains 3 replies, has 2 voices, and was last updated by  Andres Malovos 3 weeks, 5 days ago.

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  • #86348

    Blake Foley
    Participant

    hello ,

     

     

    I am trying to wrap my head around how we tune idle and off idle for our shifters. I have the air screw out 1.5 turns from lightly seated and the idle speed nob seat to where the kart barely dies(I was told shifter karts shouldn’t idle for best performance). Now my main question is with my settings like this ( and if there are better settings I should be using please let me know ) how do I go about changing the pilot jet. Is it more of a guess and check game. Throw a jet in and see if off idle improves or worsens ? I understand main jets and plug chopping but setting up the pilot jet for the best performance still can’t seem to get a grasp of . I am new to the karting world and have minimal experience with carberators. Any help or knowledge thrown my way would be a great help

     

     

    thanks for your time

    #86350

    Andres Malovos
    Participant

    I’ve had good results using this app on my phone. It takes local weather data and gives you a carb setup.

    https://itunes.apple.com/us/app/jetting-cr125-shifter-kart-setup-tuning-for-honda-cr125/id830550109?mt=8

    #86364

    Blake Foley
    Participant

    Do you find that to app to be accurate ? I know it won’t be 100% but if it gets me a starting point that’s great

    #86409

    Andres Malovos
    Participant

    I’d say so. I run a lambda sensor, so I know it does run a little rich with the settings from the app, but for a starting point, that’s a good thing.

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