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How big to bore

Discussion in 'Early CJ5 and CJ6 Tech' started by hickntick, Feb 15, 2005.

  1. Feb 15, 2005
    hickntick

    hickntick New Member

    north west mo
    Joined:
    Jan 14, 2005
    Messages:
    41
    How much over stock can you bore a 225
     
    hickntick, Feb 15, 2005
    #1
  2. Feb 15, 2005
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    The Autozone kit comes in .020, .030, .050 and .060 ovesized pistons. I bored mine .030 over.
     
    Mcruff, Feb 15, 2005
    #2
  3. Feb 15, 2005
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    Yup, if'n I remember right, you can quite safely go .060"..........
     
    Patrick, Feb 15, 2005
    #3
  4. Feb 16, 2005
    m38willys

    m38willys Jeep Vice 2024 Sponsor

    Green Cove...
    Joined:
    Sep 30, 2002
    Messages:
    690
    Mine is .60 over. No problems, pistons came from Badger.
     
    m38willys, Feb 16, 2005
    #4
  5. Feb 17, 2005
    jeepdaddy2000

    jeepdaddy2000 Active Member

    Eagle Point oregon
    Joined:
    Jun 24, 2004
    Messages:
    1,165
    A good rule of thumb is to go with the minimum over bore. This is usually .030. That way if you have a problem(God forbid) in the future, you can get another bore out of it.
     
    jeepdaddy2000, Feb 17, 2005
    #5
  6. Feb 17, 2005
    Michaelo

    Michaelo Member

    Neodesha, Kansas
    Joined:
    Sep 21, 2002
    Messages:
    90
    Like Jeepdaddy said. Bore them the miniumum amount just in case something happens. If you go .060 over and something wrong happens. You will have to find a new block or sleeve the cylinders($$$$). You really don't gain ne noticiable horsepower or anything by making it bigger.
     
    Michaelo, Feb 17, 2005
    #6
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