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Technical Soaking old gaskets

Discussion in 'The Hokey Ass Message Board' started by 36roadster, Jul 29, 2021.

  1. I bought some NOS gaskets and in there were some early cork-only gaskets for sideplates, valve covers, etc. They are very brittle , but I remember something about soaking these old ones in water, letting them expand, and then installing them while expanded. Anyone done this with success?
     
  2. Guy Patterson
    Joined: Nov 27, 2020
    Posts: 314

    Guy Patterson

    you can but only for a few hours and put on while expanded
     
    302GMC likes this.
  3. 302GMC
    Joined: Dec 15, 2005
    Posts: 7,024

    302GMC
    Member
    from Idaho

    ^^^^^
    Years ago I threw a 30 yr old GMC valve cover gasket in the hot tank & went to lunch.
    When I got back, I could have used it on a 320'' Buick !
     
  4. Flathead Freddie
    Joined: May 9, 2021
    Posts: 193

    Flathead Freddie
    Member

    Hi
    We got some gaskets from England still in package but not airtight and this worked . Soaked for about 2 in plain warm water . Warm water seemed to be the trick and only leaving in long enough to be firm and flexible . Then we put them in rags to soak up excess moisture and installed them damp . Only took them to about 2/3 recommended torque , let them dry overnite , removed them and dressed them in sealant for final assembly then of course torqued to recommended rating . These gaskets were for an old Rolls Royce notorious for leaking oil and not a leak and next 5 years I know of kept sealed like a charm
     
    loudbang likes this.

  5. Flathead Freddie
    Joined: May 9, 2021
    Posts: 193

    Flathead Freddie
    Member

    That's 2 hours for soaking
     

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