Airflow meter for tuning 308 carbs | FerrariChat
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Airflow meter for tuning 308 carbs

Discussion in 'Technical Q&A' started by dan the man, Mar 21, 2005.

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  1. dan the man

    dan the man Karting

    Nov 5, 2003
    146
    Alabama
    Full Name:
    Daniel
    #1 dan the man, Mar 21, 2005
    What is the actual bore diameter of the weber carbs? what flow meters (and where did you get them) are you guys using to tune the carbs?

    I am looking at the following flowmeter but am not sure if I will need the adapter. I do believe that the 40 mm measurement is the incerted venturi and not the bore of the carb housing.


    http://www.cbperformance.com/catalog.asp?ProductID=572

    Please advise

    thanks,

    Dan
     
  2. Sean F.

    Sean F. F1 Rookie

    Feb 4, 2003
    3,067
    Kansas
    Full Name:
    Sean F
    #2 Sean F., Mar 21, 2005
    You want the SK type.
     
  3. snj5

    snj5 F1 World Champ

    Feb 22, 2003
    10,213
    San Antonio
    Full Name:
    Russ Turner
    #3 snj5, Mar 21, 2005
    SK for sure. Mine fits without an adapter.
    If you want to make it easier get 2.
    :)
     
  4. dan the man

    dan the man Karting

    Nov 5, 2003
    146
    Alabama
    Full Name:
    Daniel
    #4 dan the man, Mar 21, 2005
    Thanks,

    I am ordering the SK today.

    Dan
     
  5. pma1010

    pma1010 F1 Rookie

    Jul 21, 2002
    2,559
    Chicago
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    Philip
    #5 pma1010, Mar 21, 2005
    Nope, other way round. "40" in "40 DCNF" is the size of the bore above the throttle plate. The venturi is an insert (e.g., 34mm) that fits inside the bore above the plate.

    If you have problems getting the SK, Pierce Manifolds usually has them (and Mike Pierce is a great source of info).
    Philip
     
  6. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,700
    San Carlos, CA
    Full Name:
    Mitchell Le
    #6 yelcab, Mar 21, 2005

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