Ferrari 400/412 Cooling System Bleeding | FerrariChat

Ferrari 400/412 Cooling System Bleeding

Discussion in '365 GT4 2+2/400/412' started by 360modena2003, Mar 19, 2022.

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  1. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,398
    #1 360modena2003, Mar 19, 2022
    Hello,

    other than the 15mm mentioned in the owner's manual, is there a bleed screw or any particular process to ensure the cooling system is completely full and air free?

    Should one fill the header tank as well?


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  2. raemin

    raemin Formula 3

    Jan 16, 2007
    1,869
    Lyon (FR)
    Full Name:
    R. Emin
    #2 raemin, Mar 19, 2022
    There is a huge volume of coolant, bleeding not necessary.
     
  3. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    34,103
    Austin TX
    Full Name:
    Brian Crall
    #3 Rifledriver, Mar 19, 2022
    No such thing as an automobile cooling system that is completely full and air free. It simply cannot operate that way. If you do not leave air space in proportion to its coolant capacity it will make it for you.
     
  4. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,398
    #4 360modena2003, Mar 19, 2022
    Yes, I assume that is accounted for in the mentioned 15mm coolant level.

    I had the radiator emptied, but only 10/12 liters came out, and a similar amount went it, heating core?

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  5. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    25,145
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #5 Steve Magnusson, Mar 19, 2022
    Last edited: Mar 19, 2022
  6. SouthJersey400i

    SouthJersey400i Formula 3

    Mar 14, 2007
    1,605
    Romulus, NY (Finger Lakes)
    Full Name:
    Ken Battle
    #6 SouthJersey400i, Mar 20, 2022
    360
    The "overflow" tank should remain empty all of the time, unless you overheat and vapor forces coolant in there.

    Also, the pressure cap goes on the "overflow" tank and the non-pressure cap goes on the radiator. I had it backwards for a couple of years.
    Ken
     
    Schumi and 360modena2003 like this.

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