Keihin carb help

Discussion in 'General Support' started by TrynaLearn, Jul 4, 2020.

  1. TrynaLearn

    TrynaLearn Member

    Joined:
    Jan 24, 2018
    Messages:
    109
    Likes Received:
    8
    Trophy Points:
    55
    Gender:
    Male
    I have a 28mm keihin and the jetting numbering is very confusing to me
     
  2. Slydog

    Slydog Active Member Technician

    Joined:
    Nov 3, 2019
    Messages:
    1,804
    Likes Received:
    313
    Trophy Points:
    119
    Gender:
    Male
    Occupation:
    Diesel mech
    Location:
    Florida
    The kehin jetting numbers are. Lower #'s than the mikuni#'s
    I run in the 160 range
    Up or down according to temperature
    That's with a ported stroked big bore
     
  3. Larry's Shee

    Larry's Shee Active Member

    Joined:
    May 23, 2009
    Messages:
    8,629
    Likes Received:
    914
    Trophy Points:
    149
    Occupation:
    Unemployed carpenter
    Location:
    Ortskaville, MI
    Basically Kehein main jet numbers are 1/2 of what Mikuni numbers
    Pilot jets are 2X
     
  4. Awk08

    Awk08 Administrator Staff Member Technician

    Joined:
    Jan 30, 2009
    Messages:
    24,312
    Likes Received:
    2,230
    Trophy Points:
    175
    Occupation:
    Electrician/Contractor
    Location:
    Pa.
  5. TrynaLearn

    TrynaLearn Member

    Joined:
    Jan 24, 2018
    Messages:
    109
    Likes Received:
    8
    Trophy Points:
    55
    Gender:
    Male
    I ended up getting some jets for the mikuni... now I have to get a idle screw mine fell out... I'm wondering can I get the same idle screw from motion pro and just put a spring on it instead of the locknut... will it stay in with just a spring on it
     
  6. Slydog

    Slydog Active Member Technician

    Joined:
    Nov 3, 2019
    Messages:
    1,804
    Likes Received:
    313
    Trophy Points:
    119
    Gender:
    Male
    Occupation:
    Diesel mech
    Location:
    Florida
    Only use. Genuine oem parts!!!!
     
  7. TrynaLearn

    TrynaLearn Member

    Joined:
    Jan 24, 2018
    Messages:
    109
    Likes Received:
    8
    Trophy Points:
    55
    Gender:
    Male
    It's the idle screw in the tors delete kit... fell out dont really like the jamb nut... so was thinking about taking the spring off my keihin idle screw and putting it on the mikuni idle screw... I'm still using the stock carb
     
  8. Slydog

    Slydog Active Member Technician

    Joined:
    Nov 3, 2019
    Messages:
    1,804
    Likes Received:
    313
    Trophy Points:
    119
    Gender:
    Male
    Occupation:
    Diesel mech
    Location:
    Florida
    Now you know why it had a jam nut:D.
    Vitos performance might have one?
     

Share This Page