Compression numbers | FerrariChat
Buy

Compression numbers

Discussion in '348/355' started by Buzzl, Jan 28, 2018.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Buzzl

    Buzzl Formula Junior

    Feb 13, 2016
    279
    Upstate South Carolina
    #1 Buzzl, Jan 28, 2018
    Looking at purchasing a 1996 355 Spider. Looking over invoices and saw the following numbers:

    1.200 lbs.
    2.200 lbs.
    3.210 lbs.
    4.200 lbs.
    5.210 lbs.
    6.200 lbs.
    7.200 lbs.
    8.205 lbs.

    The test were performed by Bruce Crall who is well none in the Ferrari circle from what I understand. He is unavailable until tomorrow. Are these good numbers? If not, how bad? Thanks
     
  2. carnutdallas

    carnutdallas Formula 3
    Rossa Subscribed

    Nov 11, 2010
    1,971
    Dallas Burbs
    Full Name:
    Rob
    #2 carnutdallas, Jan 28, 2018
    That is excellent. Signs of rebuild? Or Low mileage, low use and engine time. 180’s is average for most vehicles of our vintage with normal use.


    Sent from my iPhone using Tapatalk
     
  3. jjtjr

    jjtjr Formula Junior

    Aug 29, 2016
    762
    Vermont
    Full Name:
    john truskowski
    #3 jjtjr, Jan 28, 2018
    Look good. Was the test done hot or cold?
     
  4. drbob101

    drbob101 F1 Rookie
    Owner Silver Subscribed

    Nov 26, 2012
    3,821
    Tinton Falls, NJ
    Full Name:
    Bob Ferraris
    #4 drbob101, Jan 28, 2018
    They look fine. A leak down analysis would be more telling.
     
  5. Buzzl

    Buzzl Formula Junior

    Feb 13, 2016
    279
    Upstate South Carolina
    #5 Buzzl, Jan 28, 2018
    Thanks Doc
     
  6. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,630
    San Carlos, CA
    Full Name:
    Mitchell Le
    #6 yelcab, Jan 29, 2018
    Not necessarily. With those compression numbers, I would just forget the leak down and move on.
     
  7. Dave rocks

    Dave rocks F1 World Champ
    BANNED

    Nov 23, 2012
    16,047
    Orchard Park, NY
    Full Name:
    Dave Lelonek
    #7 Dave rocks, Jan 29, 2018
    I agree. But, it's also important to observe the raise of the compression and not just the final numbers - that is often overlooked.

    And to the OP, do you mean Brian Crall (you stated Bruce Crall). If it's Brian, listen to his recommendation.
     
  8. Buzzl

    Buzzl Formula Junior

    Feb 13, 2016
    279
    Upstate South Carolina
    #8 Buzzl, Jan 29, 2018
    Yes, Brian, I tried to go back and edit.
     
  9. Dave rocks

    Dave rocks F1 World Champ
    BANNED

    Nov 23, 2012
    16,047
    Orchard Park, NY
    Full Name:
    Dave Lelonek
    #9 Dave rocks, Jan 29, 2018
    Whatever Brian tells you will be great advice - you are in good hands.
     

Share This Page