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Thread: EGT Spread

  1. #1

    EGT Spread

    I have been reading the "leaning and Diag Engine Problems" writeup
    from E.I. They say that it is n ormal for a Carb engine like the O-
    360 to have a EGt spread of 150F. I see much less that this--around
    60-70 F on my UBG-16. I was wondering what others see for a EGt Temp
    spread.

    Mike Dawson






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  2. #2

    EGT Spread

    How you operate will have a great deal to do with the mixture distribution
    in carbureted engines. Some engine/induction combinations are at their best
    with full throttle at a 7,000'-8,000' Density Altitude. Others work best
    with a very slight reduction in throttle opening; apparently the induced
    'swirl' helps with vaporization and cylinder balance. Sometimes a very
    little bit of carb heat in cruise will be just the trick for getting better
    mixture vaporization and balance. If you are getting as little as a 60-70
    spread on a carb engine, you are doing quite well. You might want to share
    the settings you are using, so that others can try it out. Generally
    speaking, the leaner you get, the more pronounced any cylinder imbalance
    will become. If you are able to even get to peak EGT (on the richest
    cylinder/last to peak), and cruise there, on a carb engine, you are doing
    quite well. Few carb engines are balanced well enough to actually get Lean
    Of Peak, without the roughness caused by uneven power output.

    There is a great deal of good info on leaning, in the BAC FAQ and Forums.


    _____

    From: musketeermail@yahoogroups.com [mailto:musketeermail@yahoogroups.com]
    On Behalf Of dawsonmic23
    Sent: Thursday, July 06, 2006 12:59 PM
    To: musketeermail@yahoogroups.com
    Subject: [musketeermail] EGT Spread

    I have been reading the "leaning and Diag Engine Problems" writeup
    from E.I. They say that it is n ormal for a Carb engine like the O-
    360 to have a EGt spread of 150F. I see much less that this--around
    60-70 F on my UBG-16. I was wondering what others see for a EGt Temp
    spread.

    Mike Dawson


    [Non-text portions of this message have been removed]



    Join BAC today and be a part of the ONLY Type Club for the Musketeer series!

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    <*> To unsubscribe from this group, send an email to:
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