Suspension | Page 4 | FerrariChat

Suspension

Discussion in '308/328' started by Imatk, Nov 30, 2020.

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  1. miketuason

    miketuason F1 World Champ
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    No, that’s correct, look at the S in the “USA” same orientation, if it’s upside down it would be 2
     
  2. thorn

    thorn F1 Rookie
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    Aug 7, 2012
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    In the top original pic (USA), the bigger S loop is on the top. (This is upside down to how we see many standard fonts.)

    In your reproduction, you have placed the larger loop on the bottom. It looks correct from a printing standpoint, but is flipped from how the original one looks.
     
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  3. miketuason

    miketuason F1 World Champ
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  4. Longstone Tyres

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  5. miketuason

    miketuason F1 World Champ
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    Update: Bad news, I had to order another set of new but shorter front coil over shocks (VariShock) and a pair of 9” 350lbs springs. As you can see from the pics, with the car/wheels on the ground, the shock is too long and left me with only about
    1 1/2” of travel left, not enough room for flexibility and as you can see, the bottom spring perch is at its very bottom position and I couldn’t lower the car anymore. With the new shorter shocks and spring, it will give 2 1/2” of travel which is enough actually. Stay tune for the next pic with the new shock/spring installed.
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  6. miketuason

    miketuason F1 World Champ
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  7. GordonC

    GordonC F1 Rookie
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    Mike, those look much better! I'm very interested to hear your impressions of the VariShocks once you have them installed.

    Cheers,
    Gordon
     
  8. miketuason

    miketuason F1 World Champ
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    Yes Teri took my car to get a four wheel alignment, they were able to align the two rear wheels but they didn’t want to align the front because there’s too much play on the passenger side inner tie rod as the inner bushing the one inside the steering rack housing is worn out so, I pulled the steering rack assembly today and will rebuilt it as soon as the rebuilt kit arrives.

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  9. miketuason

    miketuason F1 World Champ
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    Received the steering rack bushing and the eight silent block but they are gray not Orange color like the original but definitely harder.

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  10. 2cam

    2cam Formula Junior

    Aug 28, 2014
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    ^Thanks for documenting the rebuild of your suspension! This has been a great thread to follow. My car isn't needing it yet, but it's something that I have on the horizon for the next year. I'd just like to have everything in the suspension refreshed including the rack.

    2cam
     
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  11. chris_columbia

    chris_columbia Formula Junior
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  12. miketuason

    miketuason F1 World Champ
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    Hi Chris! Yes thanks for that info, that is something I can consider but how much different does it really make on the street as I don’t trac mine anyway? Some says don’t even recommend using the polyurethane bushing as you will fill every bump on the steering wheel but if it’s not that bad, why not, let me contact Crowndog and see if he has a set.
     
  13. chris_columbia

    chris_columbia Formula Junior
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    It isn't harsh. I've never been on the track. I've had other 80's sports cars with factory manual steering racks. None had a soft elastomeric isolation for the steering rack. I have no idea why it was put on the 308. If the ones you got are really stiff, you will be fine. I don't want to side track you. But, if I had known you were headed this direction, I definitely would have told you to go right to the acetal part, before you bought the rubber ones.
     
  14. JC Andruet

    JC Andruet Karting

    Jan 16, 2013
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    Hopefully I'm not teaching you to suck eggs here, and apologies if I am !!
    The good folk as Stuttgart fit elastomeric isolators to their steering racks, the difference being, most owners don't realise they do so.

    Here's a Porsche 993 steering rack inner ball joint assembly :

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    The component highlighted with a red arrow is separate to the component highlighted with a yellow one. How are they "fixed" together ? Why they're bonded with an elastomer...
    And for those concerned as to the outcome should/when the elastomer break down and fail, the two components are engineered in such a manner they cannot separate from each other.

    The 993 RS version of this assembly got elastomer with an increased shore hardness, whilst the Cup (race) version deleted the elastomer altogether.

    Maranello's way seems a cheap way of trying to gain a degree of compliance, but introducing too much due to the nature of the bushes they specified. I concur with your perspective, I'd go with the acetal items every time.
     
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  15. chris_columbia

    chris_columbia Formula Junior
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    This 993 design makes a lot more sense because it's isolating the steering wheel from the front wheels. The 308 steering wheel is connected directly to the front wheels and the isolation is to the frame of the car. The reason I think that the acetal parts work better and actually reduce vibration at the steering wheel, is that from the factory, a vibration in the wheels doesn't have much mass to dampen it. Vibration goes from the wheels to the rack to the steering wheel. When using the acetal parts, you add the mass of the entire car as a dampener. The vibration now goes from the wheels, to the rack AND FRAME to the steering wheel.
     
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  16. JC Andruet

    JC Andruet Karting

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    Exactly !!
    Perfectly put Chris.
     
  17. jjeffries

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    ASB is 3 miles from me! In historic Stafford Springs, Conn., also home to a world-reknowned woolens mill.

    John
     
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  18. miketuason

    miketuason F1 World Champ
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    Hey that’s pretty cool John, they are sure a great company.
     

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