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never before seen broken part

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

  1. turbo-joe

    turbo-joe F1 Veteran
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    romano schwabel
  2. pshoejberg

    pshoejberg Formula 3
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    Peter H
    Strange....maybe a heat treatment defect from the hardening process?

    Best Peter
     
  3. Veedub00

    Veedub00 F1 Rookie
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    was that nut put on with an impact wrench?
     
  4. Ludwig

    Ludwig Formula Junior
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    Mar 27, 2006
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    Ludwig Allegra
    over torqued
     
  5. Ludwig

    Ludwig Formula Junior
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    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
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    I also think overtorqued, but never have seen this before
     
  7. turbo-joe

    turbo-joe F1 Veteran
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  8. turbo-joe

    turbo-joe F1 Veteran
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    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 Junior
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    Apr 28, 2004
    937
    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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    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
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    thank you for the info sam :)
     
  12. samsaprunoff

    samsaprunoff F1 Rookie
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    Good day Romano,

    You are most welcome!

    Cheers,

    Sam
     

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