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Hot Rods toothless flathead flywheel

Discussion in 'The Hokey Ass Message Board' started by drumyn29, May 8, 2026.

  1. philosofriend
    Joined: Dec 13, 2025
    Posts: 10

    philosofriend

    If the ring gear doesn't go on in the first try, get the flywheel colder and the ring hotter for the next try.
    Larger supermarkets sell dry ice, you throw the bag on the ground to break the block up into chunks to fill up the inside of the flywheel, cover with blankets and cardboard boxes for a while. I heated my ring in an oven at 550 degrees. The dry ice is much colder than the freezer. Don't give the ring any time to cool off - straight off the heat and right on the flywheel.
     
    big duece likes this.
  2. CSPIDY
    Joined: Nov 15, 2020
    Posts: 1,285

    CSPIDY
    ALLIANCE MEMBER

    If you put the dry ice in a container large enough to hold the flywheel, add isopropyl or methanol alcohol it will drop the temperature another 30 degrees
     
    Sandcrab and Adriatic Machine like this.
  3. Adriatic Machine
    Joined: Jan 26, 2008
    Posts: 1,098

    Adriatic Machine
    ALLIANCE MEMBER

    New ring gears are cheap and available. Pop that thing off and replace it with a new one.
     
    NoSurf likes this.
  4. Andy
    Joined: Nov 17, 2002
    Posts: 5,483

    Andy
    Member

    Been a while since I fooled with the different flywheels. Any chance he has an 8BA flywheel?
     
  5. 210superair
    Joined: Jun 23, 2020
    Posts: 2,675

    210superair
    Member
    from Michigan

    As my kid would say, it's not rocket surgery....
     
    drumyn29 likes this.
  6. drumyn29
    Joined: Feb 16, 2006
    Posts: 2,405

    drumyn29
    Member

    Oh great, they make different flywheels?
     
  7. big duece
    Joined: Jul 28, 2008
    Posts: 7,220

    big duece
    Member
    from kansas

    Yes, but 8BA and 59A types are not interchangable at all.
     
  8. 51504bat
    Joined: May 22, 2010
    Posts: 6,085

    51504bat
    ALLIANCE MEMBER

    IIRC the 8ba pressure plate bolt holes are drilled completely through while 59's weren't
     
    alchemy likes this.

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