355 - Ball Joint Failure on 6k Mile F355 | Page 4 | FerrariChat

355 Ball Joint Failure on 6k Mile F355

Discussion in '348/355' started by Orangevespa, Sep 7, 2021.

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  1. Orangevespa

    Orangevespa Rookie

    Sep 19, 2019
    20
    Full Name:
    NAA
  2. MAD828

    MAD828 F1 Rookie
    Silver Subscribed

    Oct 8, 2011
    2,540
    Sydney
    Full Name:
    Elliott Caras
    Would not put much stock into Classiche and originality in this case, 1995 never had the option of a challenge grill from factory, so it could not have come from factory with it.
     
    INTMD8 likes this.
  3. steved033

    steved033 F1 Veteran
    Owner Silver Subscribed

    Apr 12, 2017
    7,795
    Atlanta, GA
    Full Name:
    Steve D.
    hm.

    (That's all I got.)

    sjd
     
  4. 26street

    26street Formula Junior

    Jan 30, 2021
    343
    Westchester New York
    Full Name:
    Mark k
    Wow what a experience glad no one was hurt

    I have to ask did you have someone check the tapered matting surface on the spindle for proper fitment —- the ball joint and spindle are both made with a tapper and proper torque to the nut is is need (lol of course)
    is there a possibility that it could have been over tightened and had a small crack where the treads meet the tapper ( which is where the Failure point looks like in the pics) or maybe loss and the spindle just beat that area up till it let go —- just asking not saying that was any of those but would like to know like you said you where lucky the the weather turned on you because pushing these type of cars are the reason we have them and things like this can really put yourself and others in a unsafe position (to say it nicely)
     
  5. mike32

    mike32 F1 Veteran

    May 13, 2016
    5,835
    Isle of man- uk
    Is it a steel collar in the alloy that stops wear in the alloy ?
     
  6. PaulK

    PaulK F1 Rookie
    Silver Subscribed

    Apr 24, 2004
    4,625
    Michigan
    Full Name:
    Paul
    Just FYI those pictures were taken at the dealer when they did the certification- they aren't pictures that the factory took when the car was built if that is what you are going by. Also it looks to be Rosso Corsa and not Rosso Barchetta. I am really curious about that front bumper and why the side markers are missing. I wonder if its an euro bumper or a previous owner filled in the markers? Either way, what a great car!
     
    26street likes this.
  7. Orangevespa

    Orangevespa Rookie

    Sep 19, 2019
    20
    Full Name:
    NAA
    Just a quick update as I finally got the car down to a Ferrari specialist, his outfit also manages/preps a few east coast challenge teams. Said he's seen this type of failure on race cars and they always happen the same way. The nut holding the tapered part of the ball joint securely in the hub must have been loose or worked its way loose. The weight of the car then transfers to the threaded (narrow) portion of the ball joint stalk. As soon as that happens, it's a matter of bumps/load and time for the break to occur. He and his race team looked at the fracture and said this is exactly what they've seen on their race cars. He also noted that sometimes these nuts have 1/2-1/4 turn on them post race...so if I were you guys I'd be double-checking the torque specs on those hubs ASAP.

    He also did confirm that there is absolutely no crash damage/repairs on the frame/underside...the paint meters on bumper/fenders all support that as well. T
     
    PAUL500 likes this.

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