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Flathead Oil Pump with/Without Relief Valve?

Discussion in 'The Hokey Ass Message Board' started by hotrodmarco, May 15, 2011.

  1. hotrodmarco
    Joined: Dec 10, 2008
    Posts: 142

    hotrodmarco
    Member
    from Germany

    Hy Guys

    One Question!

    I open a old Flathead Engine and see theres a Oil Pump installed with a Relief Valve, but org. under the Intake Manifol is a Oil Relief Valve too!?

    Its a 1943 59Ab flatty! ( Maybe it is a Oil Pump froma 8Ba? ) no stampet ( Vintage)

    It Works? or any problems with two relief valves?

    Whats is the best Oil Pump for the Flatty with some Modifikations for higher Rpm?

    Thanks
     
  2. kendall66
    Joined: Apr 3, 2011
    Posts: 96

    kendall66
    Member
    from iowa

    check outMelling Flathead Ford Oil Pumps. they will deliver more pressure than original.
     
  3. Flat Ernie
    Joined: Jun 5, 2002
    Posts: 8,406

    Flat Ernie
    Tech Editor

    You don't need an aftermarket oil pump in the majority of applications. A good late 8BA pump will do more than you need. Identify the later pumps by looking inside for spiral gears instead of straight gears...
     
  4. hotrodmarco
    Joined: Dec 10, 2008
    Posts: 142

    hotrodmarco
    Member
    from Germany

    the later 8ba pump has the same diameter as a older 59ab pump?
    what is with the Pick up?

    no problem to put a 8ba in an older 59ab block?
    have the 8ba pump a relief valve?
    when yes any problemes with two relief valves?

    let me know!
     
  5. Jimmy2car
    Joined: Nov 26, 2003
    Posts: 1,707

    Jimmy2car
    Member
    from No. Cal

    Use the 59 type pump that you removed. It is more than adequate. Check it, clean it and make sure the relief valve is not stuck. It'll be fine
    Jim
     
  6. flatjack
    Joined: Feb 13, 2007
    Posts: 981

    flatjack
    Member

    No problem with the 2 relief valves. Generally the one in the block is set higher than the one in the pump. That way the pump byp*** controls the pressure. You can shim the spring in the valley byp*** to increase it's pressure setting.
     

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