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612 - very rough ride

Discussion in '612/599' started by TrojanFan, Jul 6, 2018.

  1. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    33,050
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    The fuel pump is rigidly attached to the cover and is not going to be banging around.
     
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  3. TrojanFan

    TrojanFan F1 Rookie
    Silver Subscribed Owner

    Nov 17, 2008
    4,283
    So. CA & NV
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    Peter
    Replaced the rear ball jonts upper and lower, greased all drop links, tie rid ends and front ball joints. Made some improvement but still causing an issue.
     
  4. brogenville

    brogenville Formula Junior
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    Apr 24, 2012
    847
    UK
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    Robin
  5. Diny

    Diny Karting

    Jun 24, 2017
    62
    A few people here mentioned the adaptive suspension system. Has that been looked at?
     
  6. bmwfan328

    bmwfan328 Rookie

    Feb 4, 2006
    1
    New York
    Listen to this man, then thank him him later.
     
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  8. TrojanFan

    TrojanFan F1 Rookie
    Silver Subscribed Owner

    Nov 17, 2008
    4,283
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    Peter
    What part would you consider the upper strut mount? Not your typical shock with the rubber bushing on the top. #8 & #12 look to be metal type plates. #9 & #13 look to be something that could wear out.
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  9. marcmc8867

    marcmc8867 Formula Junior

    Jul 27, 2004
    956
    NC
    Full Name:
    Marc M.
    Thread revival...

    Any update on this? Did you end up replacing the upper shock mounts?

    I have a 2008 612 with 29k miles. I've been having the same issue you described with loud clunking at low speeds while things are much better at higher speed. I would say mine isn't just the rear though.

    I just had the upper and lower ball joints replaced and picked the car up yesterday. It is a bit better (and the old joints did have play in them) but the low speed noise/clunking is still an issue.

    The tech has looked at sway bar links, looked for other loose parts, looked for leaks from the shocks, etc. and all else seems to be OK.

    We are trying to brainstorm if it is the upper shock mount (none available in US), the lower shock mount/joint (4 available in US), or if there is an issue in the shocks that despite there being no leaks. Any help today would be appreciated as the shop is 5 hours from home and I haven't decided whether to take the car with me or leave it with the shop.

    On a related note does anyone know of a place that rebuilds 612 shocks or otherwise know how to address shocks cost-effectively?

    Thanks in advance.
     
  10. Nospinzone

    Nospinzone F1 Veteran

    Jul 1, 2013
    5,613
    Weston, MA
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    Paul
    I know you said they were checked, but the only thing I can think of is double check the bushings in the sway bars.
     
  11. Yzerman

    Yzerman Rookie

    May 22, 2020
    12
    Full Name:
    Bernhard E.
    I have similiar issues with my 612 2007. When i take the car out of my garage i can hear a sound similar to a honking from the rear when driving over a small bump. Seem to come somewhere from the suspension or shocks. It disappears after a few kms. Also i feel that with low speeds the car seems to be very hard. I had a 911 before with much more sportive suspension but that one was not that hard. Further the car seem to slip a bit to right side when i drive over a sewer cover with the right rear wheel even i drive straight and streets are dry. Any similar observations by anyone?


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  13. F612

    F612 Formula Junior

    Feb 5, 2018
    482
    Leeds,AL
    Full Name:
    David D. Hood
    My ‘08 OTO makes an awful squawk over bumps for the first mile or so if it has been sitting for a week or more.
    It doesn’t ride “hard” and the noise goes away quickly.
    I have looked everywhere I know to look and can’t find anything loose.
    I have quit worrying about it.
     
  14. Yzerman

    Yzerman Rookie

    May 22, 2020
    12
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    Bernhard E.
  15. marcmc8867

    marcmc8867 Formula Junior

    Jul 27, 2004
    956
    NC
    Full Name:
    Marc M.
    Mine definitely has something going on that I can’t ignore. I get in my 550 (29k mi) and 599 (10k mi) and they’re fine over the same bumps. I get in 612 (28k mi) and the suspension is rough and loud.

    I ended up leaving my car with the tech and he’s going to source upper and lower shock mounts and hopefully that’ll do it. Hate to throw parts at it but not sure what else to do.
     
  16. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    33,050
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    Motor and transaxle mounts can give suspension-like symptoms.
     
  17. Yzerman

    Yzerman Rookie

    May 22, 2020
    12
    Full Name:
    Bernhard E.
  18. bamaman

    bamaman Karting
    Silver Subscribed

    Nov 27, 2015
    152
    Mobile Alabama
    Full Name:
    William M (B.J.) Lyon, Jr.
    I have experienced the same rough, jarring ride at low speeds in my 599, and all shocks are dry and tie rods and ball joints fine.
     
  19. F612

    F612 Formula Junior

    Feb 5, 2018
    482
    Leeds,AL
    Full Name:
    David D. Hood
  20. powersteer

    powersteer Rookie

    Sep 13, 2020
    5
    Has anyone solved the ride issues? Mine is quite jarring at times
     
  21. Yzerman

    Yzerman Rookie

    May 22, 2020
    12
    Full Name:
    Bernhard E.
    Not yet. Plan to bring the car to the garage end of march


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  22. marcmc8867

    marcmc8867 Formula Junior

    Jul 27, 2004
    956
    NC
    Full Name:
    Marc M.
    Not solved. I just replaced all the ball joints and it is still loud and rough as hell. I’m starting to think engine and transmission mounts need to be explored since suspension parts appear to be fine yet these issues persist.
     
  23. brogenville

    brogenville Formula Junior
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    Apr 24, 2012
    847
    UK
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    Robin
    Engine and trans mounts are oil filled; you'll tell if they're done as they start to prolapse and the rubber part will feel squishy rather than firm.
     
  24. powersteer

    powersteer Rookie

    Sep 13, 2020
    5
    I have a feeling my dampers are shot

     
  25. marcmc8867

    marcmc8867 Formula Junior

    Jul 27, 2004
    956
    NC
    Full Name:
    Marc M.
    Are they leaking?
     
  26. powersteer

    powersteer Rookie

    Sep 13, 2020
    5
    They aren't, but feels very under damped.
     
  27. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    33,050
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    Doubt the shocks are shot. Very tough.

    Has she been lowered? That can get the shocks out of their optimum operating range.
     
  28. ThunderRolls

    ThunderRolls Karting
    Silver Subscribed

    Mar 6, 2010
    198
    Deep South
    It's the flippin' 20's. Beautiful, but a rough ride to me. Went from 997TT with 19's to one with 20's. Ugh. Got out of my wife's audi and into an Rs7, same thing. But I didn't buy the RS7 for comfort :rolleyes:
     

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