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maximum ignition advance for carb'ed 308

Discussion in '308/328' started by alan p. read, Oct 23, 2016.

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  1. alan p. read

    alan p. read Rookie

    Jun 26, 2006
    15
    essex. england
    Full Name:
    alan p. read
    #1 alan p. read, Oct 23, 2016
    hi everyone. i'm sure this must have been asked before.... what is the maximum ignition advance for the euro 308 carburetor-ed engine? i have a fully map-able ignition and so i can dial any curve. i find the handbook data contradictory. also the data, as far as i understand it, says the timing is at maximum advance, 33 degrees btdc at 5000 rpm. i recall someone saying they have a maximum advance of 40 degrees btdc. LIB 308 will be going on a dyno, for optimum tuning, but i would like to get it ball park before.
    thanks in advance (please excuse the pun),
    alan.
     
  2. 911308

    911308 Karting

    Jul 27, 2010
    113
    Launceston
    #2 911308, Oct 23, 2016
  3. alan p. read

    alan p. read Rookie

    Jun 26, 2006
    15
    essex. england
    Full Name:
    alan p. read
    #3 alan p. read, Oct 24, 2016
    thanks for the info.
     
  4. ATSAaron

    ATSAaron Formula 3
    Silver Subscribed

    Jun 1, 2004
    1,135
    Shady Shores, TX
    Full Name:
    Aaron Bunch
    #4 ATSAaron, Oct 25, 2016
    Rent some dyno time. Many years ago I used my Dynojet 248 to set my ignition timing on my 308. It's hard to tell 5-15hp by a butt dyno, but it's there. Plus you will have the ability to not just set the total advance, but to shape the curve too.

    Aaron
     

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