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Thread: carb adjustment

  1. #1
    Speedster Member
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    carb adjustment

    what is the best RPM to set the idle at on a 259 V8 with a 2b Stromberg carb. The manual says 550 - 600 rpm and I was just wondering if setting at 650 or 700 rpm would be better or worse. thanks

  2. #2
    President Member thunderations's Avatar
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    If the car is an automatic, a high idle will cause more creep when in gear.
    Try increasing the idle speed and see if you like it. If not, adjust it back.
    1966 Daytona (The First One)
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  3. #3
    President Member
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    Chock the wheels and set e brake. Adjust with car in drive. Otherwise its just like thunderations said: if you don't like all you gotta do is turn the screwdriver just a little.

  4. #4
    Golden Hawk Member StudeRich's Avatar
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    If you get too crazy with the Higher than normal Idle, it will cause a late downshift to 2nd. Gear, and depending on the Ignition Timing setting and Temp., it could Diesel (run on) at shutdown.
    StudeRich
    Second Generation Stude Driver,
    Proud '54 Starliner Owner




  5. #5
    President Member
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    You have to remember that the idle screw is subject to wear so you can take off for a drive and have to adjust it mid trip.
    If you car is ugly then it better be fast.....

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  6. #6
    President Member
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    If the engine is in good condition, 550 RPM in neutral with a standard transmission or an automatic transmission in drive should give a smooth idle with little creep and no stalling with auto transmissions. If the engine stalls or runs rough at 5 to 600 RPM, start looking for mechanical issues such as out of adjustment valves, low compression, ignition problems etc. Bud

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