XT600 jetting for FCR carb

Discussion in 'Thumpers' started by Karolis3rd, May 5, 2020.

  1. Karolis3rd

    Karolis3rd n00b

    Joined:
    Apr 4, 2019
    Oddometer:
    3
    Location:
    Lithuania
    Has anyone tuned this carb for their XT and could share what size jets, needle and other mods you have done? Soon I will be fitting FCR mx 40mm carb for my XT600 and it would be wery helpfull to have starting point for jetting.
    #1
  2. OzCRU

    OzCRU Long timer

    Joined:
    Feb 16, 2015
    Oddometer:
    1,026
    Location:
    Sydney Australia
    @Karolis3rd
    Search for @hoorang in the TT600 thread - he converted his to an FCR MX with a custom billet manifold & from memory bored the FCR out to 41mm but since the XT600 is so similar it should put you in the ballpark.

    another comparison would be to look at the FCR jetting used in DR650’s just for more specs to check/test. could you post your results & details once you settle on it cause I’ll be interested in due course as well. Ta
    #2