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F40 tachometer

Discussion in '288GTO/F40/F50/Enzo/LaFerrari/F80' started by Ferraripilot, Jul 5, 2013.

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  1. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
    17,863
    Atlanta
    Full Name:
    John!
    #1 Ferraripilot, Jul 5, 2013
    Bit of a technical ignition question here for anyone who is able to answer.

    Does the F40 have two ignition boxes? As in, one for each bank? Or is it all managed by one unit, if so, is the tach signal output on that box?

    I think this is the case, but is the F40 tachometer a square wave reading tachometer which accepts a V8 signal? Or is it like 308/328 in that it's a 4 cylinder tachometer only accepting one banks signal because it manages the two banks seperately.

    thanks all
     
  2. EllisJuan

    EllisJuan Rookie

    Apr 18, 2011
    36
    #2 EllisJuan, Jul 5, 2013
    Last edited: Jul 5, 2013
    I believe there is actually 4 ignition boxes/coils each running two cylinders.
     
  3. petrolfumes

    petrolfumes Karting

    Jan 25, 2006
    62
    Next to garage
    Full Name:
    mr petrolfumes
    #3 petrolfumes, Jul 6, 2013
    There are two ecu's and the tachometer signal is fed from the ecu for cylinders 5-8, or so say the wiring diagrammes. Whether they are all built that way is another question.

    Btw, there are indeed four coil packs.
     
  4. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
    17,863
    Atlanta
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    John!
    #4 Ferraripilot, Jul 8, 2013
    many thanks! so that means the tach is indeed a 4 cylinder unit.
     
  5. ross

    ross Three Time F1 World Champ
    Owner Silver Subscribed

    Mar 25, 2002
    38,014
    houston/geneva
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    Ross
    #5 ross, Jul 8, 2013
    my left bank, 5-8 just shut down and the tach went with it, so this would seem to confirm the above. fwiw.
     

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