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412 ignition rotor-distributor

Discussion in 'Technical Q&A' started by Philippe Herve, Aug 8, 2018.

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  1. Philippe Herve

    Philippe Herve Rookie

    Jul 11, 2018
    21
    Vieux-Reng France
    Full Name:
    Herve Philippe
    #1 Philippe Herve, Aug 8, 2018
    Bonjour all,
    Thanks again to Steve and Gary for the help about lambda sensor.

    Well, I continue to improve my recent purchase. I've ordered gaskets for ignition rotors because they leak oil.

    My question is: if I remove the ignition rotor assembly, can I easily reinstall it with the correct position, because I do not know how he is connected with the camshaft ?

    Thank you

    Hervé
     
  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    BANNED Lifetime Rossa

    Jan 11, 2001
    26,822
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #2 Steve Magnusson, Aug 8, 2018
    Are you replacing the Gasket item 6 (125166) here?:

    https://www.ricambiamerica.com/car-diagrams/ferrari/v12/gt-group-2-2/412/engine-ignition.html

    I can confirm that they (intelligently) made the hole pattern on the ignition rotor, item 8 (126139), asymmetric so that it only goes on in one position to the camshaft (the same rotor is used on TR). And judging by the SPC figure, they also made the hole pattern on the Support, item 3 (125165), asymmetric so same (good thing) there. I would add that if you are replacing the Gasket, item 6, you might consider also replace the Sealing Ring, item 5 (126105), since you'll have the Support removed anyway.
     
  3. Philippe Herve

    Philippe Herve Rookie

    Jul 11, 2018
    21
    Vieux-Reng France
    Full Name:
    Herve Philippe
    #3 Philippe Herve, Aug 9, 2018
    Hi Steve,
    Yes I've ordered all the seals and gaskets. If I have well understood, the 126460 and 126461 stay on the engine.
    thank you again for your help !

    Hervé
     
  4. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    BANNED Lifetime Rossa

    Jan 11, 2001
    26,822
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #4 Steve Magnusson, Aug 9, 2018
    Yes, the couplings between the camshafts and the dist rotors stay pinned to the camshaft.
     
  5. Philippe Herve

    Philippe Herve Rookie

    Jul 11, 2018
    21
    Vieux-Reng France
    Full Name:
    Herve Philippe
    #5 Philippe Herve, Aug 9, 2018
    Thank you for your precious help !
     

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