1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Piston Ring Install

Discussion in 'Intermediate CJ-5/6/7/8' started by chosen1608, Jul 14, 2010.

  1. Jul 14, 2010
    chosen1608

    chosen1608 Member

    Gainesville, FL
    Joined:
    May 6, 2010
    Messages:
    137
    So I'm in the process of installing new rings, but I've reached a stumbling block. The haynes manual says the second and top rings have a mark to indicate which side goes up. I see the markings, but the manual then says the second ring should be installed with the bevel down. If I do it this way, the marking would be opposite. So which way does the second compression ring go, bevel up or down? Thanks
     
  2. Jul 14, 2010
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    23,596
    What brand rings? I would follow the instructions of the ring manufacturer. Either that, or install the new rings in the same way as the old rings came out. The Haynes manuals screw things up pretty regularly, from what I understand.

    Bevel up seems backwards to me, but I'm not an expert. Ask the ring manufacturer - check their web site.
     
  3. Jul 15, 2010
    joe28

    joe28 Member

    North Eastern Pa.
    Joined:
    Oct 21, 2009
    Messages:
    170
    IN 40 plus years of spinning wrenches and redoing jeeps, here's what I've learned.
    Follow the ring instructions.
    I've NEVER installed a 2nd ring bevel down. Both rings should be bevel or marks up.
    Check you ring end gap when you install them, (heck check then in the bore before you install them.
    A old mechaionc told me years ago, "buy .10 bigger rings and file your ring to get the proper ring gap, takes up the cylinder wear or taper.
    I've done that more than once, (it's a norm on off road bikes).
    Make the rings last longer (of course the oil properties have changed a great deal since then, Metal and lubes are WAY better, but it kinda makes the J.O.B. perfect).
    Joe
    Just my 2 cents, use it as you may!:)
     
  4. Jul 18, 2010
    dvader

    dvader Member

    Northern Nevada
    Joined:
    Jul 20, 2006
    Messages:
    224
    Standard practice is bevel up, so the ring ring expands against the cylinder wall under compression.
     
New Posts