A-arm bushing diameter? | FerrariChat
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A-arm bushing diameter?

Discussion in '308/328' started by rjd2, Sep 9, 2020.

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  1. rjd2

    rjd2 Karting

    Jul 28, 2016
    125
    #1 rjd2, Sep 9, 2020
    Hi all, I'm rebuilding the suspension on a 1978 308 GTS. I'm planning on using the energy suspension urethane bushings, and suspension.com has them in stock, but I called them, and they can't tell me whether the 31mm or the 34mm bushings are the correct size for my car. I called energy suspension, but still haven't heard back. Do any of you by chance know the size on this for a 1978 car? Thanks.
     
  2. Nuno Andrade

    Nuno Andrade Karting

    Aug 24, 2019
    154
    Houston
    Full Name:
    Nuno Andrade
    #2 Nuno Andrade, Sep 9, 2020
    I’m on the process of doing the same and it is my understanding that should be a 30mm

    I’m still on the debate of rubber vs polyurethane Lol


    Sent from my iPhone using FerrariChat
     
  3. thorn

    thorn F1 Rookie
    Silver Subscribed

    Aug 7, 2012
    3,324
    Tallahassee, FL
    #3 thorn, Sep 9, 2020
    I have installed the polyurethane bushings on the front of my car. In hindsight, I wish I had gone with rubber. There's nothing particularly wrong with polyurethane, but they are noisier... And I'm not sure that the additional stiffness is really that advantageous. Install is easier with poly, but I have the capability of welding rubber bushings.

    Have I taken them off, and reinstalled new rubber bushings? No, I'm not that unhappy. Just food for thought.
     
    Nuno Andrade likes this.
  4. waymar

    waymar Formula 3

    Sep 2, 2008
    1,354
    Northeast, PA - USA
    Full Name:
    Wayne Martin
    #4 waymar, Sep 9, 2020
    FWIW on my ‘82 308GTSi used Poly on bottom and rubber on top. Holds alignment very well. No noise after 15k miles. Can say glad I did not go with Poly upper also..... just saying...
     
    Nuno Andrade likes this.

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