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105 Carburetter Jets

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  • 105 Carburetter Jets

    I have been tinkering with nets, as I was running rich.

    This is where I am now and wondered if anyone has noted their jet settings as a comparison. The technical literature is somewhat contradictory.

    Choke 40mm dia.
    Main..................190
    Compensating..112
    Economy...........210
    Idle.....................65

    With these jet sizes the car runs much more smoothly and has lost the flat spot coming off idle.

    The jets were.

    Choke 40mm dia
    Main..................190
    Compensating..230
    Economy...........230
    Idle....................65

    According to the Zenith literature the car runs on the compensating jet unless running flat out when the main jet comes into play, so my changing to compensating jet to one nearly half the diameter ( quarter of the cross sectional area)is the only difference.

    The Co meter that I have has come down from 14% to 7%, which probably isn't bad for a vintage engine. The carburetter is a V1.

    Comments welcome.

    Hmmmm.





  • #2
    Hi Dick,

    I cannot add anything at all but I am interested in your findings. My 95 is still in a thousand pieces, but is coming back together slowly. I have a carburetter which has been on the shelf for years, so your jetting might be helpful. Incidentally it did 13 mpg when I bought it 39 years ago. After a few years I took the 48v1 off and fitted a much smaller Zenith from a Ford Zodiac. No loss of performance but up to 21 mpg! This time I will really persevere with the original carb.

    James.

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