News

motorcycle 29mm valve shims

Discussion in 'Technical Q&A' started by yelcab, Feb 2, 2008.

  1. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    10,519
    San Carlos, CA
    Full Name:
    Mitchell Le
    Would motorcycle 29mm valve shims work in a 328?
     
  2. To remove this ad click here.

  3. Meister

    Meister F1 Veteran
    Silver Subscribed

    Apr 27, 2001
    5,382
    Duluth, MN
    Full Name:
    The Meister
    IIRC, I heard Volvo shims are compatible.
     
  4. miketuason

    miketuason F1 World Champ
    Silver Subscribed Owner

    Feb 24, 2006
    14,211
    Cerritos, CA.
    Full Name:
    Mike
    I believe most Fiats, Lancias Twin cams, Volvo and 2V 308 uses the same valve shims.
     
  5. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    10,519
    San Carlos, CA
    Full Name:
    Mitchell Le
    The 2V 308 shims are 33mm size, also come from Volvo. My question is very specific to 29mm shims, readily available at many motorcycle shops.
     
  6. eulk328

    eulk328 F1 Rookie

    Feb 18, 2005
    2,723
    Full Name:
    F683
    Not with the 328 or 308QV, only with the 308.

     
  7. To remove this ad click here.

  8. fastradio

    fastradio F1 Rookie
    Professional Ferrari Technician BANNED

    Apr 26, 2006
    3,652
    New England
    Full Name:
    David Feinberg
    To actually answer your question:

    Yes; 29mm shims are used in a few motorcycle applications
    No; They won't work in a 328 (for the most part), as the motorcycle shims are much thinner that your typical 328 shim. Doing a "typical" 328 valve adjustment, the shim range will fall between 3.75 and 4.15mm. Most of the motorcycle shims end around 3.00 mm.

    In that 328 shims are readily available, typically for $4-$8 a shim, why not just go to a Ferrari aftermarket vendor...

    Regards,
    David
     
  9. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    10,519
    San Carlos, CA
    Full Name:
    Mitchell Le
    Thank you, that is the answer I am looking for. It is not the price, it is having to wait 3 days for the right shims to arrive.
     
  10. miketuason

    miketuason F1 World Champ
    Silver Subscribed Owner

    Feb 24, 2006
    14,211
    Cerritos, CA.
    Full Name:
    Mike

Share This Page