Last question on shift shaft seals, lip type or non? | FerrariChat
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Last question on shift shaft seals, lip type or non?

Discussion in 'Technical Q&A' started by christopher, Dec 1, 2005.

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  1. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
    #1 christopher, Dec 1, 2005
    Hello again fellow "F"-Chatters,

    I had started a tread a few days ago, but wanted to ask a new question regarding this topic.

    I understand that depending on the year of car (mine is 79 308 GTB), the shift shaft seals could "O"-ring stye for seals with lip,to which lasted longer.

    My question is on my car can I use the seals with a "lip" and will they last longer, or should I remain with the reqular "O"-rings.

    Anyone that has experience with this job, is appreciated.

    Thanks, Chris.
     
  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,932
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #2 Steve Magnusson, Dec 1, 2005
    I believe the mounting arrangement is quite different between the early o-ring (a small groove) and the later lip seal (which has a more substanial body holding the actual flexible sealing element so it needs a much bigger mounting feature/hole).

    For the early o-ring design, it is possible to substitute a more modern sealing ring with a 4-lobed cross-section (these are called "Quad Rings" by B+S and "Quattro Rings" by McMaster-Carr). Try a search -- someone just posted the McMaster-Carr PN (~20mm ID with a ~3mm cross-section in Viton) that is the correct equivalent to the stock o-ring (per Kermit).
     
  3. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
    #3 christopher, Dec 1, 2005
    Thanks Steve,

    I live in So. Ca. so I'm going to be that way tomarrow, I'll pick one up!

    Thanks, Chris.
     
  4. ria

    ria Formula Junior

    Nov 2, 2003
    732
    ohio
    Full Name:
    phill
    #4 ria, Dec 1, 2005
    what is the Mcmaster - carr) no? i did a search nothing. thanks.
     
  5. ria

    ria Formula Junior

    Nov 2, 2003
    732
    ohio
    Full Name:
    phill
    #5 ria, Dec 1, 2005
    ok got the no. thanks anyway.
     
  6. Birdman

    Birdman F1 Veteran

    Jun 20, 2003
    6,689
    North shore, MA
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    THE Birdman
    #6 Birdman, Dec 1, 2005
    www.mcmaster.com

    They have the most complete website for finding stuff in the universe, but be patient. Big=slow.

    Birdman
     
  7. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
    #7 christopher, Dec 2, 2005
    Thank you everybody!

    Chris.
     

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