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Technical Flathead v8 valves

Discussion in 'Traditional Hot Rods' started by robert graves, Jan 20, 2021.

  1. robert graves
    Joined: Nov 2, 2018
    Posts: 263

    robert graves

    What valves are everyone using these days for the crappy fuel we have to burn
     
  2. F-ONE
    Joined: Mar 27, 2008
    Posts: 3,613

    F-ONE
    Member
    from Alabama

    stock. Crappy fuel was the thing in 1932.
     
    robert graves likes this.
  3. F-ONE
    Joined: Mar 27, 2008
    Posts: 3,613

    F-ONE
    Member
    from Alabama

    There's is no need to put hardened seats in a flathead. In fact most flatheads already came with hardened exhaust valve seats through mid 1951.
     
    robert graves likes this.
  4. V8 Bob
    Joined: Feb 6, 2007
    Posts: 3,128

    V8 Bob
    ALLIANCE MEMBER

    If you need to buy new valves, Manley SS 1.5" or 1.6" Chevy exhaust valves are a good choice, especially if you are using a re-ground cam because they are longer than stock.
     
  5. Atwater Mike
    Joined: May 31, 2002
    Posts: 11,618

    Atwater Mike
    Member

    When I was an apprentice mechanic (1957) I ground flathead valves daily, then finishing the stems (to adjust them) Nice, those old hollow Ford tappets. No need for further adjustment!
    We got some long stem valves in '59, (might have been Chev) I did my roadster up with a Potvin cammed flattie with non-adjustable Ford tappets, the old way.
    All the 'rodders' told me it "wouldn't work without adjustable tappets, ya GOTTA have 'em!"
    I laughed, my usual chuckle.
     
    warhorseracing likes this.
  6. Glenn Thoreson
    Joined: Aug 13, 2010
    Posts: 1,017

    Glenn Thoreson
    Member
    from SW Wyoming

    I just did a valve job on an 8BA flathead ('49 - '53). Just use the modern stainless valves, guides and keepers. Replacing seats requires machine shop work. If they will clean up with a light grinding and have a good margin, keep them. They are pretty tough critters. Early valves with the mushroom ends can cause a lot of headaches if you have severely stuck guides. You didn't say what year your engine is but the modern valves and parts fit Ford flathead engines of many years. Install adjustable lifters if you don't have them.
     
    warhorseracing likes this.

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