Engine vibrations...the whole car is shaking | FerrariChat
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Engine vibrations...the whole car is shaking

Discussion in '348/355' started by rumen1, May 18, 2014.

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  1. rumen1

    rumen1 Formula 3
    Owner

    Jun 23, 2012
    1,789
    Bulgaria
    #1 rumen1, May 18, 2014
    Guys, I have noticed, that on idle, the whole back of my 355 is shaking a little bit. I'm not sure of this is normal, or my engine bushes are gone. Is this normal and if not - should I consider it as a serious problem?
     
  2. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,611
    The Brickyard
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    The Bad Guy
    #2 ernie, May 18, 2014
    Not normal.

    Sounds like it's either the motor mounts, or the gearbox mounts.
     
  3. rumen1

    rumen1 Formula 3
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    Jun 23, 2012
    1,789
    Bulgaria
    #3 rumen1, May 18, 2014
    Is it a comlicated job to replace these and will anything happen if I don't replace them until the winter?
     
  4. hjp

    hjp Formula Junior

    Feb 23, 2013
    591
    Kansas City, Mo.
    Full Name:
    Jerry Peterson
    #4 hjp, May 18, 2014
    No, nothing will happen. It will just vibrate like hell. The engine and transaxle mounts both are bracketed and rest over the top of the rubber mounts. If the mounts totally fail (mine have once...engine mounts up front) the consequence is the bracket rests on metal instead of rubber. Hence....VIBRATION!!
     
  5. JeffBarber

    JeffBarber Karting

    Feb 6, 2011
    175
    Lascassas, TN
    Full Name:
    Jeff
    #5 JeffBarber, May 18, 2014
    Of course in my case, it was a case of low compression in 2 cylinders on each bank, and now I find I need valve guides, which I'm doing now. I had a major burnt valve too.
     
  6. rumen1

    rumen1 Formula 3
    Owner

    Jun 23, 2012
    1,789
    Bulgaria
    #6 rumen1, May 19, 2014
    I have actually just changed the valve guides with the upgrated titanium ones. I will see what I will do about the vibrations when the winter comes then. Now it's time to drive :L)
     
  7. bobzdar

    bobzdar F1 Veteran

    Sep 22, 2008
    6,817
    Richmond
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    #7 bobzdar, May 19, 2014
    Not complicated at all, I'd order a set and do them this weekend if I were you. Very easy job.
     
  8. JeffBarber

    JeffBarber Karting

    Feb 6, 2011
    175
    Lascassas, TN
    Full Name:
    Jeff
    #8 JeffBarber, May 19, 2014
    Well, I suppose your car is producing so much compression and HP that's it's shaking it's tail off. Replacing the tranny mounts is no biggy, just remember the whole 'arm' attached to the gearbox comes out. You're just supporting the gearbox with a jack, not lifting it.
     
  9. tbakowsky

    tbakowsky F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    19,826
    The Cold North
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    Tom
    #9 tbakowsky, May 19, 2014
    Do a compression check..
     
  10. taz355

    taz355 F1 Veteran
    Owner Silver Subscribed

    Feb 18, 2008
    6,004
    Indio Ca/ Alberta
    Full Name:
    Grant
    #10 taz355, May 19, 2014
    Easy just loosen all mounts, undo two at a time lift engine and transmission install new mounts. Could take a few hours I would change them this way if something else goes wrong you will feel or hear it as well. I don't like driving something that's partly broke but that's just me.
     
  11. rumen1

    rumen1 Formula 3
    Owner

    Jun 23, 2012
    1,789
    Bulgaria
    #11 rumen1, May 20, 2014
    Of course , me too. I try to keep my car perfect, it's just that the weather here just has straighten up (after 2 months of rain) and I really want to start to drive the car as much as I can and not lose time for repairs. But I will follow everyone's advices and see if I can fix that in the following weeks.
     
  12. spaghetti_jet

    spaghetti_jet Formula Junior

    Jan 5, 2005
    921
    Europa
    Full Name:
    Bob
    #12 spaghetti_jet, May 20, 2014
    +1

    diagnose the root cause (or at least rule out likely causes) before throwing time and parts at the car.
     
  13. taz355

    taz355 F1 Veteran
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    Feb 18, 2008
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    Grant
    #13 taz355, May 20, 2014
    Maybe I was not clear, definately put a jack under and lift engine and transmission to see if they are broken,damaged,pounded out first. Sorry I didn't specify.
     
  14. Eric C

    Eric C F1 World Champ

    Mar 20, 2009
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    #14 Eric C, May 21, 2014
    Determine if it's a mounting issue or engine issue (Hang some paper over the tailpipe). ;)
     
  15. rumen1

    rumen1 Formula 3
    Owner

    Jun 23, 2012
    1,789
    Bulgaria
    #15 rumen1, May 21, 2014
    Funny thing... I have driven the car today a little - no shacking like this at all. I mean - the engine shakes a little bit, but the car doesn't move too much. Last time, when the problem occured, it was after a hard drive. However I will take it to a mechanic next week to see the mounts.
     
  16. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK
    #16 lotusk, May 21, 2014
    When my engine mounts went really bad there was a loud clunking sound when i operated the gear lever...

    The sound of the gear rod banging on a subframe rail as the engine had dropped a few mm's....

    Those mounts get hot and if oil is seeping from somewhere they can get oily
    Oil, heat on rubber ...not good.

    Transmission mounts last a lot longer
     

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