Whats the right Torque for 328 Heads Studs ? | FerrariChat
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Whats the right Torque for 328 Heads Studs ?

Discussion in 'Technical Q&A' started by dirk, Nov 25, 2005.

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  1. dirk

    dirk Rookie

    Nov 4, 2003
    33
    Europe
    Full Name:
    Dirk
    #1 dirk, Nov 25, 2005
    Hi,

    iam a little confused about the 328 Workshop manual.

    On one sheet they say, You should use 45Nm for the cylinder head nuts and on the Torque Table they say, You should use 100Nm, whats right ?

    Whats the right torque for the torque wrench, because You use the special tool for screw on and the center of the wrench isnt the center of the stud.

    Thanks

    Dirk
     
  2. Verell

    Verell F1 Veteran
    Consultant Owner

    May 5, 2001
    7,022
    Groton, MA
    Full Name:
    Verell Boaen
    #2 Verell, Nov 28, 2005
    Like many other modern engines, the 328 isn't intended to have the studs re-torqued.

    The studs are torqued to a specific value, then the nut is rotated a specific number of degrees which actually stretches the studs so that they slightly permanently deform & are under tension.

    If you back-off a stud & try to re-torque it, you'll over stretch it and risk it breaking.
     

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