F430 - rear main seal leak ? | Page 2 | FerrariChat

F430 - rear main seal leak ?

Discussion in 'Technical Q&A' started by PaulCr, Oct 5, 2020.

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  1. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,288
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    A mistake in the parts book?
    Say it ain't so.
     
    2NA likes this.
  2. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
    18,221
    Twin Cities
    Full Name:
    Tim Keseluk
  3. JM280z

    JM280z Formula Junior

    Aug 22, 2020
    929
    Full Name:
    Jake
    I’m currently doing my clutch in F430. I replaced the main seal. Should I reseal the brass plug preventatively or leave it as is? It’s not leaking.


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  4. JM280z

    JM280z Formula Junior

    Aug 22, 2020
    929
    Full Name:
    Jake
    Hey Gary, what do you use to reseal that center plug? Hondabond?


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  5. voicey

    voicey Formula 3

    Jul 29, 2009
    1,193
    London, UK
    Full Name:
    Aldous Voice
    Using silicone here is a dangerous game. The plug seals the end of the crankshaft - the last thing you want is a worm of silicone making it's way into one of the oil drillings. I use 518 as it'll dissolve in oil.
     
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  6. pexogoce

    pexogoce Karting
    BANNED

    Nov 15, 2022
    78
    Full Name:
    pexogoce
    If the leak is coming from the main crankshaft seal, it is possible that the oil is continuously dripping even when the engine is off due to gravity. Oil can accumulate in the area above the seal and slowly leak out over time, especially if the car is parked on an incline. Other possibilities for a persistent leak include a damaged or cracked oil pan, a loose oil filter or drain plug, or a leaking valve cover gasket. It is recommended to take the car to a mechanic for a proper diagnosis and repair.
     
  7. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,932
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    Another possibility is that that plug was originally considered to be a permanent part of the crankshaft so was never meant to be shown as a separately replaceable part (I'm sure there are a bunch of other permanent plugs in that crankshaft to accommodate the various cross-drilling need for the lubrication). The item numbering order on the 430 SPC figures at MCP would strongly indicate that it was a late addition to becoming an available "spare part" (although the 430 Challenge SPC there still doesn't show it):

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  8. JM280z

    JM280z Formula Junior

    Aug 22, 2020
    929
    Full Name:
    Jake
    “518” = red loctite 518 I assume, right?

    https://a.co/d/6gQEj25


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  9. Island Guy

    Island Guy Karting

    Feb 20, 2020
    139
    Full Name:
    Island Guy
    Correct
     

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