599 GTB F1 - "Clunk" between shifts. | FerrariChat

599 GTB F1 - "Clunk" between shifts.

Discussion in '612/599' started by 360modena2003, Jun 17, 2017.

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  1. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,382
    #1 360modena2003, Jun 17, 2017
    I've recently been in another 599 GTB and noticed that the shifts are much smoother than on mine.

    There is a noticeable "clunk" between the shifts, almost as if something would be hitting the car at the rear.

    Could this be the PIS needing adjustment? Clutch is new and car has less than 20k miles.

    Thank you.

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  2. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
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    Clarksville, Tennessee
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    Terry H Phillips
    #2 tazandjan, Jun 17, 2017
    I would have the F1 system serviced (fluid changed, system bled, SD3 check, PIS optimized) and see if that fixes her. Should be done every three years according to the maintenance schedule.
     
  3. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,382
    #3 360modena2003, Jun 17, 2017
    Fluid has already been changed and bled (manually), and no difference.

    The next step would seem is SD3 and PIS...

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  4. LightGuy

    LightGuy Three Time F1 World Champ
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    Oct 4, 2004
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    David
    #4 LightGuy, Jun 17, 2017
    The dealer doesn't know ?!?!

    If the fluids have been changed sounds like a sensor problem.

    This is one of the reasons to dislike paddle shifters.
     
  5. Skidkid

    Skidkid F1 Veteran
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    Aug 25, 2005
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    John Zornes
    #5 Skidkid, Jun 17, 2017
    Please! Let's not turn this into yet another F1/Manual threads. It adds no value to the OP.

    To the OP: "manual bleed" is a myth. There isn't an bleed screw for the F1 and you can't cycle the gears completely enough to bleed the system completely. You need an SD to do that job correctly. Having said that. Taz is right. You need to get this to someone who knows the system and can get it set up correctly for you. I find that a well set up F1 is VERY reliable; unfortunately, many just hack at it, don't know enough about the system, and just don't get it set up right. In your case, the PIS may be wrong, a sensor may be dirty, throwout bearing may be going bad (not disengage), there may be a clutch issue, there are a lot of potential causes.
     
  6. Redneck Slim

    Redneck Slim Formula 3
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    Walt Kimball
    #6 Redneck Slim, Jun 17, 2017
    It is well known that paddle-shifter manuals were designed by Rube Goldberg when he was on one of his many acid trips. If you want simplicity,lower maintenance costs,and more driving enjoyment,get a stick.
     
  7. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,382
    #7 360modena2003, Jun 19, 2017
    Well, I would need an additional (after trading mine in) 300,000$ to get a stick...I think I should manage to get my issue fixed for less than that :)

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  8. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,382
    #8 360modena2003, Jun 19, 2017
    ...or 50,000$ plus to do a proper F1 to manual conversion...

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  9. mello

    mello F1 Veteran
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    #9 mello, Jun 19, 2017
    Just a wild guess... engine/transaxle mounts?
     
  10. tbakowsky

    tbakowsky F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
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    The Cold North
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    Tom
    #10 tbakowsky, Jun 19, 2017
    Ding ding! Let's look there first shall we?
     
  11. mello

    mello F1 Veteran
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    #11 mello, Jun 20, 2017
    If it is indeed the engine/transaxle mounts, get it taken care of right away and try not to drive the car. The twisting force can crack or weaken the aluminum welds.
     
  12. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,382
    #12 360modena2003, Jun 21, 2017
    Checked, all good. The problem is 100% from the clutch engaging/disengaging.

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  13. jorge da cruz

    jorge da cruz Karting

    Sep 4, 2015
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    Luanda Angola
    Full Name:
    Jorge Da Cruz
    #13 jorge da cruz, Sep 20, 2017
    Did you found a reason / cause ?

    I think mine is developing the same issue as yours...

    I Do not use it often only saw that happening late summer when i drive it for two weeks after being stored in the garage for almost one year..

    Jorge
     

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