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Tuning a flathead

Discussion in 'Traditional Hot Rods' started by zurawski, Jun 30, 2016.

  1. zurawski
    Joined: Jan 23, 2013
    Posts: 56

    zurawski
    Member
    from wisconsin

    I have a 1951 ford flathead and it's running great but I need some tuning help, if anyone has any tips or information it would be great. I would like to take it to a car show in 5 days. It has 3 stromberg 97s with progressive linkages.
     
  2. JonF
    Joined: Mar 6, 2010
    Posts: 169

    JonF
    Member

    The easy answer is to block off the 2 end carbs and run on the middle one.
     
  3. zurawski
    Joined: Jan 23, 2013
    Posts: 56

    zurawski
    Member
    from wisconsin

    But what about when I want them to open
     
  4. Ron Brown
    Joined: Jul 6, 2015
    Posts: 1,507

    Ron Brown
    ALLIANCE MEMBER

    You can use a blockoff plate at bases and install plugs in fuel lines to the outside carbs. Leave all the linkage hooked up as is. The base of a 97 is taller than the butterflys, so they will rotate with no interference. If you cut the block plates just smaller than the gasket you cant even see it. Just make sure the plate goes between the carb and gasket, not between the gasket and manifold and don't forget to plug the fuel lines (an allen head pipe plug or set screw will go in deep enough to hook your line back up the carb nipple) so your accelerator pump aint pumping fuel everytime you hit the throttle. Great thing is its all easily reversible, so you can dial in the 3 carb setup when you have more time.
     
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  5. Does it have the stock distributer?The loadamatic will not work well with 3 carbs.Tell us more about the engine.
     
    Flathead Dave likes this.
  6. flatford39
    Joined: Dec 3, 2006
    Posts: 2,442

    flatford39
    Member

    ^^^^^What he said. If the loadamatic is in it those carbs will never work right.
     
  7. Raunchy
    Joined: Apr 16, 2007
    Posts: 373

    Raunchy
    Member

    If it's running great why would you want to do anything to it??
     
    56shoebox, Flathead Dave and wbrw32 like this.
  8. Bandit Billy
    Joined: Sep 16, 2014
    Posts: 6,308

    Bandit Billy
    ALLIANCE MEMBER

    I have three 97s with progressive linkage on a 8Ba that run nice. I much prefer them all running together on my application. Buy a vacuum tester that looks like this and use it to calibrate the carbs to be sure they are pulling the same. Have they ever ran well together or is this a new installation? Jet sizes? There are guys on here that know their Stromberg's.
    upload_2016-6-30_15-38-23.png
     
  9. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,062

    Rusty O'Toole
    Member

    If it's running great don't be a sucker, leave it alone. If it is not running great tell us what is wrong and maybe someone will know what to do.

    If you just want to keep it running great you could clean and adjust the spark plugs and points, check over the ignition, and let it go at that.
     
  10. Atwater Mike
    Joined: May 31, 2002
    Posts: 9,937

    Atwater Mike
    ALLIANCE MEMBER

    If you must tinker (tamper) with things, do it now, leaving a 4-day 'safety net' to undo any wrongdoings before the show!
    Running good now...an improvement might be a 'bonanza', but a downturn would almost certainly result in frustration and disappointment.:cool:

    I recently watched an old clip of Dr. Joyce Brothers. She was advising a young man determined to 'tune' a British car with dual carbs, a Triumph TR3...he was lost in the synchronizing of the 2, and became 'overheated', damn near threw a fit!
    Dr. Joyce was soothing, and had the right answer, as always...
    "Just try and find a good mechanic that 'understands'.
    ...and can fix multiple carburetor problems!"
    Good advice. :p
     
  11. matter
    Joined: Jan 24, 2014
    Posts: 93

    matter
    Member

    I worked in a foreign car shop as a kid, SU carbs on a TR-3 certainly try a mechanic's patience!
    Of course, so did watching Dr. Brothers...
     
  12. zurawski
    Joined: Jan 23, 2013
    Posts: 56

    zurawski
    Member
    from wisconsin

    It ran once it's new install and a regular points distributer I have adjustable main jets on all 3
     
  13. Truckedup
    Joined: Jul 25, 2006
    Posts: 3,863

    Truckedup
    Member

    It's running well so threat it like a sore dick, don't fuck with it...
    To really be safe you can trailer the car to the show....Now what fun would that be...
     
  14. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,062

    Rusty O'Toole
    Member

    While you have the plugs out 'read' them and see how the mixture is. If they are light tan and burning nice leave the carbs alone.
     
  15. zurawski
    Joined: Jan 23, 2013
    Posts: 56

    zurawski
    Member
    from wisconsin

    I agree I will be checking the plugs and it is not running good it starts but I have to check somethings els out before I can leave it running I am just researching befor I start tuning
     

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