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Thread: 3AM airflow meter vs 5AM?

  1. 7th March 2011, 08:31 PM #1
    milld's Avatar
    milld
    milld is offline Master
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    3AM airflow meter vs 5AM?

    Hi,

    Just wondering what's the difference between the 2? Is one better than another? My spare engine has the 3AM on it, but I currently run with the 5AM.

    thanks
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  2. 8th March 2011, 01:43 PM #2
    Hobbes
    Hobbes is offline Master Supporter
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    Fundamentally the same and interchangable. 3am labelled Hitachi, 5AM labelled Lucas. I believe same design - both 55mm throats.
    The 20AM fitted to 4.6 motors is bigger and flows about 30% more.
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