Adjust 355 shocls? | FerrariChat

Adjust 355 shocls?

Discussion in 'Technical Q&A' started by larrymz3, Aug 26, 2005.

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  1. larrymz3

    larrymz3 Karting

    May 29, 2005
    70
    Hi,

    I searched, but could not find a definitive 'how to'.

    How do I adjust the front and rear shocks on my '99 355? I can't figure out how to 'unlock' the collar to turn it.

    Also, do I just use a spanner wrench?

    Thanks,
    Larry
     
  2. BigHead

    BigHead Formula Junior

    Oct 31, 2003
    995
    Outside of Boston
    Full Name:
    Dennis
    It's ridiculously easy - the red computer controlled "coupler" sitting on top of the shock pulls off once you remove the thin safety clip wire. Then you can just turn the adjuster with your fingers.

    vty,

    --Dennis
     
  3. richard_wallace

    richard_wallace Formula 3

    Feb 6, 2004
    1,957
    Cincinnati, Ohio
    Full Name:
    Richard Wallace
    The big trick is to ensure you have them set evenly - so you don't get the car of tilt - and really mess up the ride...
     
  4. larrymz3

    larrymz3 Karting

    May 29, 2005
    70
    So, how exactly does one adjust the front shocks? More specifically, how do you 'unlock' the collar on the front?

    I do not see a 'safety clip wire'.

    Thanks!
     
  5. larrymz3

    larrymz3 Karting

    May 29, 2005
    70
    Does anyone know how to adjust the front shocks? I would like to lower them about 1/2".

    Thanks!
    Larry
     
  6. GTO84

    GTO84 Formula Junior

    Dec 13, 2003
    566
    Soak the threads in penetrating oil, and then give the lower perch a good
    whack with a hammer and a screwdriver in one of the low spots on the ring nut. Use calipers to measure, and go down 1/8" at a time. 1/4" of threads on the shock body equals around 1/2" of distance from the top of the tire to the fender.
     
  7. fana355france

    fana355france Formula Junior
    BANNED

    Aug 10, 2005
    284
    France
    Full Name:
    nicolas
    #7 fana355france, Sep 2, 2005
    Last edited by a moderator: Sep 7, 2017
  8. fana355france

    fana355france Formula Junior
    BANNED

    Aug 10, 2005
    284
    France
    Full Name:
    nicolas
    #8 fana355france, Sep 2, 2005
    Last edited by a moderator: Sep 7, 2017
  9. ferrarifixer

    ferrarifixer F1 Veteran
    BANNED

    Jul 22, 2003
    8,520
    Melbourne
    Full Name:
    Phil Hughes
    Larry...

    I sympathise with you here... you badly worded a question but it has got lost further....You mean you'd like to adjust the ride height, not the shock absorber settings.

    To adjust the spring platforms, you need to overcome the tightness of the locknut. I use a hard plastic punch and a hammer to crack it off, so that it doesn't damage it. Then turn it down out the way.

    next step is tricky... the springs have a large amount of static preload, and the main platform will be stiff to turn. The easiest way to turn it is to disconnect the lower shock mount, and just turn the whole shock body within the platform nut, rather than trying to turn the nut, which has a rubber spring seat fighting against you.

    it's important to detach the electrical shock adjuster on top of the assembly first, as rotating the lower section may move it further than the adjuster allows internally.

    Once you have rotated the shock body your desired amount (being very careful to turn it the correct way, and also making careful note of how far you turn it by counting the half turns), you then tighten the lock nut back up and duplicate the change to the other side of the car.

    If you are unsure how to follow these instructions, you should get an expert to do it for you.

    Strictly, you should check the corner weights before making the change, as you can adjust them at the same time.

    It's really a job for a specialist race tuner, but you can have a go if you are absolutely competent with tools and theory.

    Once lowered, you need to check and adjust the camber and toe, as it will change. You may find the camber is just more than it was, which is fine, but the static toe will change, and needs to be reset to its' correct setting.
     
  10. fana355france

    fana355france Formula Junior
    BANNED

    Aug 10, 2005
    284
    France
    Full Name:
    nicolas
    sorry I did not understood well...it was shock not bumper...sorry
     

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