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308 QV ignition timing question

Discussion in '308/328' started by Cuddy K, Feb 2, 2019.

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  1. Cuddy K

    Cuddy K Karting

    Oct 30, 2017
    181
    Full Name:
    Ian Karr
    #1 Cuddy K, Feb 2, 2019
    I have a small leak from the distributor caps on my '85 QV, so I'm changing up the o-ring, seal and gaskets. I notice that the distributor plate and cap seem to be fixed, without a way to adjust them (which is great since everything will go back together as it was). However, it has me wondering how someone would go about setting the ignition timing. I checked the shop manual but can't really find an explanation. Just curious...
     
  2. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,189
    CT
    Full Name:
    John Kreskovsky
    #2 johnk..., Feb 2, 2019
    Timing is fixed, controlled by the Digiplex.
     
  3. Cuddy K

    Cuddy K Karting

    Oct 30, 2017
    181
    Full Name:
    Ian Karr
    #3 Cuddy K, Feb 2, 2019
    Thanks. '85 is the "newest" car in my collection. Always more to learn...
     
  4. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,189
    CT
    Full Name:
    John Kreskovsky
    #4 johnk..., Feb 2, 2019
    85 QV is a great car. I've owned my GTB since new.
     
  5. miketuason

    miketuason F1 World Champ
    Owner Silver Subscribed

    Feb 24, 2006
    15,783
    Cerritos, CA.
    Full Name:
    Mike
    #5 miketuason, Feb 2, 2019
    If your car is a US model, you can change the Digiplex boxes to the Euro Digiplex which give you a more advance ignition timing.
     
  6. Eric Taylor

    Eric Taylor Rookie

    Sep 17, 2018
    1
    Full Name:
    Eric Taylor
    #6 Eric Taylor, Mar 18, 2019
    Does any one know where you can send you Digiplex boxes to have them tested?
     
  7. waymar

    waymar Formula 3

    Sep 2, 2008
    1,354
    Northeast, PA - USA
    Full Name:
    Wayne Martin
    #7 waymar, Mar 18, 2019
    I have used Ferrari Service of Bedford NH. They rebuilt my digiplex units. The results were very satisfactory, they even programmed in a soft rev limiter which works very well. They can custom program if you want.
     
    Eric Taylor, thorn and Steve Magnusson like this.
  8. kcabpilot

    kcabpilot Formula 3

    Apr 17, 2014
    1,602
    California SF bay area
    Full Name:
    Paul
    #8 kcabpilot, Mar 19, 2019
    As an extra bit of info the timing is not fixed, it varies in accordance with engine speed and manifold pressure however the variance is controlled electronically and the distributor and rotor are in fixed positions. This is why the contact wiper on the end of the rotor is so large so that it will be aligned with the cap pole throughout the entire range from idle to maximum advance.
     
    afterburner and miketuason like this.

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