never before seen broken part | FerrariChat

never before seen broken part

Discussion in 'Boxers/TR/M' started by turbo-joe, Jun 18, 2019.

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  1. turbo-joe

    turbo-joe F1 Veteran

    Apr 6, 2008
    8,867
    southwest germany and thailand
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    romano schwabel
  2. pshoejberg

    pshoejberg Formula 3
    Silver Subscribed

    Dec 22, 2007
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    Denmark
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    Peter H
    Strange....maybe a heat treatment defect from the hardening process?

    Best Peter
     
  3. Veedub00

    Veedub00 F1 Rookie
    Owner Silver Subscribed

    Jun 30, 2006
    4,887
    Troy, Michigan
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    James
    was that nut put on with an impact wrench?
     
  4. Ludwig

    Ludwig Formula Junior

    Mar 27, 2006
    307
    Redmond WA
    Full Name:
    Ludwig Allegra
    over torqued
     
  5. Ludwig

    Ludwig Formula Junior

    Mar 27, 2006
    307
    Redmond WA
    Full Name:
    Ludwig Allegra
    I had exactly this washer break when I was disassembling and applied torque the wrong direction for the Left hand thread side- didn't take much to break it-it's heat treated and brittle.
     
  6. turbo-joe

    turbo-joe F1 Veteran

    Apr 6, 2008
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    romano schwabel
    I also think overtorqued, but never have seen this before
     
  7. turbo-joe

    turbo-joe F1 Veteran

    Apr 6, 2008
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    southwest germany and thailand
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    romano schwabel
  8. turbo-joe

    turbo-joe F1 Veteran

    Apr 6, 2008
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    romano schwabel
    no 14 at the testarossa is 220 Nm, so I think on the BB would be the same? also for no. 12?
     
  9. MOSS

    MOSS Formula 3

    Apr 28, 2004
    1,619
    I have seen it before as well. Is this a single lug car? These are old cars brother. A lot of fatigue and heat over the years a well.
     
  10. samsaprunoff

    samsaprunoff F1 Rookie
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    Jun 8, 2004
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    Edmonton, AB Canada
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    Sam Saprunoff
    Good day Romano,

    I checked the BB WSM as well as the 365 GTC4 WSM (which is very similar to the BB) and both provide the same toque settings for items (12) and (14) in your diagram:

    Your Item (12) (18mm x1.5) - 18 kg-m or approx 130 ft-lbs
    Your Item (14) (27mm x 1.25) - 22 kg-m or approx 159 ft-lbs

    Cheers,

    Sam
     
  11. turbo-joe

    turbo-joe F1 Veteran

    Apr 6, 2008
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    romano schwabel
    thank you for the info sam :)
     
  12. samsaprunoff

    samsaprunoff F1 Rookie
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    Jun 8, 2004
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    Edmonton, AB Canada
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    Sam Saprunoff
    Good day Romano,

    You are most welcome!

    Cheers,

    Sam
     

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