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gearbox nut

Discussion in '308/328' started by decardona, Jul 10, 2009.

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  1. decardona

    decardona Formula 3

    Apr 23, 2005
    1,019
    PA
    Full Name:
    Dennis Cardona
    #1 decardona, Jul 10, 2009
    Can someone tell me the size of the nut on top of the gearbox? Want to change oil, but don't have the right size. It's a '77, if that matters. Thanks.
     
  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,931
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #2 Steve Magnusson, Jul 10, 2009
    By "nut", are you talking about the fill and/or drain plugs? If so, some plugs have male hex drive feature, and this shouldn't be a mystery -- I can't recall exactly, but it's either 22mm (7/8" works OKish) or 19 mm (3/4" works) so a standard socket works. If it's a plug with a female hex drive feature, those come in two flavors -- 10mm and 12mm.
     
  3. decardona

    decardona Formula 3

    Apr 23, 2005
    1,019
    PA
    Full Name:
    Dennis Cardona
    #3 decardona, Jul 10, 2009
    I was referring to the fill plug on top. Must be 22mm because I have a 20mm that is too small. Thanks for the info.
     
  4. F328GTS/GTB

    F328GTS/GTB Formula Junior

    May 3, 2005
    517
    France
    Full Name:
    Denis
    #4 F328GTS/GTB, Jul 10, 2009
    On the 328, it is 22x150. Should be the same on the 308.

    By the way, I changed the original by a longer one : original Ferrari part has only 3 threads, which is not sufficient for aluminium housings.
    If you apply a too high torque, you damage the housing thread.
     

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