Pwk 28 tuning for zs 155???? Need help!!!

Discussion in 'Ask the Tech Masters???' started by Dawson5567, Sep 11, 2019.

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  1. Sep 11, 2019 #1

    Dawson5567

    Dawson5567

    Dawson5567

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    Hi I have a stock zongshen 155 that I am trying to tune a pwk 28 for. I was using a genuine mikuni vm 26 carb I’d bought off tbolt USA but the throttle response left something to be desired, so I thought I’d try a flat slide since this carb was given to me for free. Pretty sure the carb came off a ktm 85, so it’s a genuine keihin carb. I have a wide variety of jets and am just looking for a baseline to go from. I have a jjh needle main jets ranging from 100 to 120 and pilot jets ranging from 32 to 58. What would be the best combo to start with. I couldn’t find anything for a zs 155.
    Thanks!!!
     
  2. Sep 15, 2019 #2

    AntNZ

    AntNZ

    AntNZ

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    on a stock 155ho i would try a 38pilot and 102-108 main to start with and that should get you running pretty good, then plug chops and general feel to fine tune...
    hope this helps
     

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