Suprise the Boxer diff is not weak | FerrariChat
Buy

Suprise the Boxer diff is not weak

Discussion in 'Boxers/TR/M' started by 512bbnevada, Nov 28, 2007.

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

  1. 512bbnevada

    512bbnevada Formula Junior
    BANNED

    Aug 22, 2007
    422
    las vegas
    Full Name:
    Biff
    #1 512bbnevada, Nov 28, 2007
    Was talking to the guy that built the twin turbo BB that has 870hp, it did 144mph in the quarter and he said the BB differential is strong, it is held together via bolts its the TR diff that weak as its welded. They mated the TR motor to a Boxer diff for the car


    Anyway on to my BBLM look project, 13x15" rear wheels next
     
  2. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
    14,536
    Canada
    Full Name:
    Newman
    #2 Newman, Nov 28, 2007
    Wrong, the BB carrier is the same as the TR, the carrier starts its life as a open ended tube which they weld one end shut on and the other is bolted so they can install the clutches and differential gears inside it. The welded end is where they break, the aftermarket ones are machined as one piece with just 1 bolted on end. The 512M has the one piece one as well. making a quarter mile pass means nothing, its on borrowed time.
     
  3. 512bbnevada

    512bbnevada Formula Junior
    BANNED

    Aug 22, 2007
    422
    las vegas
    Full Name:
    Biff
    #3 512bbnevada, Nov 28, 2007
    Well Norwoods told me different, he has owned over 25 BBs personally and builds P4 replicas with the motors and trans so I think he would know, the diff is bolted together on the BB not welded, its still together on this 800hp monster BB which should say something and they have driven the car hard
     
  4. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
    14,536
    Canada
    Full Name:
    Newman
    #4 Newman, Nov 28, 2007
    Then you misunderstood him, all you need to do is go back through the threads here, 365BB's fail most due to the welded design. The 512BB design is an improvement in that the ring diameter was changed apparently but the carrier was still welded. It wasnt until the 512M that ferrari used up the crap units that they started using the good ones.
     
  5. johnvwatts

    johnvwatts Formula Junior

    Jul 7, 2007
    523
    England
    Full Name:
    John v watts
    #5 johnvwatts, Nov 29, 2007
    Newman is right. My 365BB carrier is on the bench at the moment and its welded. Replacing it as a matter of course with an updated one whilst the box is in bits for a rebuild.
     

Share This Page