Crankshaft Bolt

Discussion in 'PSI Superchargers Tech Questions' started by summitcb, Apr 20, 2012.

  1. summitcb

    summitcb Member

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    Help

    BBC Bryant crank, using RCD crank hub.

    Rcd has only a 3.00 inch bolt or a 4.4 inch bolt.

    These are 3/4" 16.

    One bolt is too short the other is too long and is only treaded for the last inch so I can't just shorten the bolt.

    I need a 3.50 3/4 16 bolt that will fit inside the crank support.

    Has any one come accoss this issue before, could a stud and nut work?

    Any ideas.


    Steve
    Summit Drag Racing
    Penticton, B.C.
     
    #1
    summitcb, Apr 20, 2012
  2. Dave Koehler

    Dave Koehler Member

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    I have been using stud and nuts on cranks for a long time. One stripped crank will do that to ya.
    Go to McMaster Carr and seek out some grade 8 quality fine thread - thread all. Then look for an appropriate size and thick hardened washer and your choice of nut. I prefer 12 point flange nuts.

    Dave Koehler
    http://www.koehlerinjection.com
     
    #2
    Dave Koehler, Apr 20, 2012
  3. secondwindracing

    secondwindracing top alcohol

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    Cat sell all there stuff in grade 10 and higher
     
    #3
    secondwindracing, Apr 20, 2012
  4. Moparious Maximus

    Moparious Maximus Member

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    My crank has a CAT track bolt in it.
     
    #4
    Moparious Maximus, Apr 21, 2012

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