80in Shovelhead Cylinder Q

Discussion in 'Old's Cool' started by Nessman, Jul 8, 2013.

  1. Nessman

    Nessman Cluttered Minimalist

    Joined:
    Feb 3, 2004
    Oddometer:
    1,923
    Location:
    Everett, WA
    My neighbor has a nice early '80s FLH, the rear cylinder has a bad spot about halfway up the stroke that looks like a ring has rusted to it at one point. it catches a fingernail and is about .5" long. Lots of blow-by on leak check he says...

    Can he just get a new cylinder and rings or are there other considerations that I don't know about.

    Best sources?
    #1
  2. Prmurat

    Prmurat Long timer

    Joined:
    Oct 28, 2011
    Oddometer:
    1,159
    Location:
    San Francisco, CA
    What abouit boring it and go one or two piston size up???
    #2
  3. Tarka

    Tarka Doesn't wave back.

    Joined:
    May 10, 2007
    Oddometer:
    2,089
    Location:
    Across the pond.
    It might even only need a honing and new rings instead of a rebore and piston.

    Anywhere you can go to get it checked out?
    #3
  4. anotherguy

    anotherguy Long timer

    Joined:
    Jun 18, 2009
    Oddometer:
    6,634
    Location:
    the hills
    Any good auto machine shop should be able to help you out. At the very worst you can have it sleeved.
    #4
  5. drhach

    drhach gorillamanufacturing.com

    Joined:
    Nov 21, 2006
    Oddometer:
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    Location:
    Waukegan
    Assuming the front cylinder is stock bore, you can get a new cylinder with a fitted piston. Or bore both OEM's.
    #5