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225 V6 Timing Cover Seal Upgrade

Discussion in 'Early CJ5 and CJ6 Tech' started by DanStew, Jan 2, 2022.

  1. DanStew

    DanStew Preowned Merkin salesman Staff Member

    I ended up ordering a new timing cover to replace my cracked on. The new cover uses a new style rubber seal for the harmonic balancer group. i was cleaning up the harmonic balancer and flange and noticed the seal area that will contact the new seal has a rough part that has the texture if the original rope seal. What do i need to do use this harmonic balancer/pully unit to work with the new seal. speedi sleeve? Sand down the rough part on the flange? Get a new flange if available?
     
    DanStew, Jan 2, 2022
    #1
  2. DanStew

    DanStew Preowned Merkin salesman Staff Member

    crank1.jpeg

    Here is the surface I speak of
     
    DanStew, Jan 2, 2022
    #2
  3. Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Iirc the seal rides inboard on the smooth surface. The ridges are actually there to whip/ shed the oil away from the seal.
     
    Rich M., Jan 2, 2022
    #3
  4. Keys5a

    Keys5a Sponsor

    The original rope seal rides on the flat area to the left (in your photo) of the knurled area. I would take crocus cloth and polish that surface. The neoprene lip seal is a big improvement. As mentioned, the knurls pull the oil away from the seal with the engine running.
    -Donny
     
    Keys5a, Jan 4, 2022
    #4
    DanStew and timgr like this.