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Technical Building a new Winfield...

Discussion in 'The Hokey Ass Message Board' started by Kevin Pharis, Nov 1, 2020.

  1. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    Even the simple hardware screws have been a challenge on this project. A few of the screws were not available in the length required, and so have to order extra long length and cut down as required. Sounds easy right...?! That’s when the screw manufacturer changed, and the screw heads went from this;
    D50A1703-2D71-4551-80CD-3422671B50D3.jpeg
    To this;
    34FB032B-4579-40ED-B232-3BDD8FDCFE5B.jpeg

    I refuse to use the under formed head screws (even tho they are technically within ISO spec), and so have begun a quest to find Fillister head screws with the correct look to complete the hardware set. I am even to the point of considering cutting down hex head bolts and slotting to get the look I want:eek:
     
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  2. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    All the jets on these Winfield’s are adjustable. The heads of the needles are notched, and are held in adjustment via a detent ball in the float bowl cover, or a spring tab for the idle screw. The adjustable int/high speed jet needles have a simple taper, and are not calibrated. The idle needle is an air bleed, and so not calibrated either.

    Right in the center of this pic, you can see a detent ball that locks one of the needles into position
    E68384DB-8980-4D21-9921-2B8E7457A3B7.jpeg

    72E7579C-7DBC-49ED-AF39-AFB24227894F.jpeg
     
    Last edited: Apr 11, 2021
    KiWinUS, loudbang, ottoman and 5 others like this.
  3. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    I know it’s been a while... but don’t worry, I’m still at it!

    I have been distracted with other peoples requests for other sized brass components and such... but have been making good progress regardless. I should have my custom ground throttle shaft bushing reamers next week, I took delivery of 10 fuel floats worth of brass spinnings (I never said they were any good), gasket making, and of course brass machining. And since “no pics = never happened”... here you go;

    89F00BF0-2D39-4F3F-A321-5474DD59CBB4.jpeg 8FAC2331-8ADB-4E06-A954-8CAA185BE2FA.jpeg D8DF3316-D7AE-4280-91A2-86F9A1596C9C.jpeg 3E611F2F-2384-4C72-985C-61576DAE3ECF.jpeg 91D52C4D-9BB7-4736-A7C2-B1FC24F2781B.jpeg
     
    TFoch, fauj, 41 GMC K-18 and 10 others like this.
  4. elgringo71
    Joined: Oct 2, 2010
    Posts: 3,259

    elgringo71
    Member

    I’m enjoying watching you make progress
     
    fauj likes this.
  5. loudbang
    Joined: Jul 23, 2013
    Posts: 38,647

    loudbang
    Member


    Are they floating in water? Are they hollow?

    [​IMG]
     
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  6. cretin
    Joined: Oct 10, 2006
    Posts: 2,966

    cretin
    Member

    Yes, those are the floats.
     
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  7. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    Yes, they are spun brass hemispheres, soldered together at the seam. These are floating in water as a simple way to check buoyancy. The original float weighs in at 22 grams... and my new one at 33. Next step is to adjust the material thickness to get the weight on point...
     
  8. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    Been slow progress lately as my day job has kept me scramblin...

    I found enough time to make up a batch of new float bowl covers tho. These have a viton tipped and spring loaded needle and seat, with the intent of reducing float level sensitivity. New float levers and a crimping fixture to capture the detent balls were also made to complete the assemblies.

    9B88B178-1696-465E-8334-955B0D7FD15F.jpeg 11F8D398-F2FD-4C71-B8CA-3AC3F80DB030.jpeg F6AA03EE-1BA3-44DF-AC59-07BB01262547.jpeg

    I also came across a jet screw cover for the S/SR carbs. I had never seen one before, and they are not in the Winfield catalog... I thought they were kinda neat, so I made a few. These hide the intermediate, high, and accelerator pump (SR) screws, while leaving access only to the idle screw thru the hole.
    FE90484F-66A1-478A-A8BD-AE3B9FED66FF.jpeg
     
    Carter, BeaverMatt, Gofannon and 13 others like this.
  9. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    Wound up getting the C19 shortly after my last post... and so pretty much halted progress for the last couple months. I didn’t get it all that bad, but sure took the wind out of my sails like nothin else before.

    I did start up a 3D printed sand cast intake manifold for my T overhead project tho... manifold was delivered last week, and got it machined and mostly polished

    14ADDCC4-31BB-4C8D-A9AE-286967B1B6D5.jpeg

    Unfortunately I have a number of projects that take priority over finishing the Winfield’s for now... but have the floats in process and hope to get the barrels finish machined before the end of the year. I can’t wait to hear one of these buggers run!
     
    chrisp, BigRRR, Jimmy B and 13 others like this.
  10. The37Kid
    Joined: Apr 30, 2004
    Posts: 28,400

    The37Kid
    Member

    Welcome back! Did I miss something, what is the deal with the above head? Bob
     
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  11. unforgiven
    Joined: Sep 6, 2007
    Posts: 157

    unforgiven
    Member
    from East Tn

    Truly amazed at your talent. Beautiful job
     
    loudbang and j hansen like this.
  12. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    Every project has its muse... and this cylinder head has clouded my judgement for the last several years. I know y’all were thinking I was building these carbs because of rigorous market research and informed business decisions... but rest assured this was really just an impulsive decision to outfit my own ridiculous obsessions.

    The cylinder head is an Akron-Hed overhead valve conversion for Model T. Designed by Harry Hosterman (HAL), and approximately 1500-2000 heads produced in ‘26 - ‘27.

    29CF8BC8-32BD-435C-9392-2645947E8D30.jpeg

    If you look closely at the pic, you’ll see that there are strange tubes where the rocker arms should be. These tubes house a series of ball bearings intended to transmit the cam lift to the valve tip. A horrible valve train design! But the valve layout and port design is actually pretty decent as proven by the flow bench. The large valve cover contains the rocker arm conversion that I made to make the head usable again. Here’s a shot under the hood

    107F9B64-589C-4898-8A0F-062B27FE840C.jpeg
     
  13. THE FRENCHTOWN FLYER
    Joined: Jun 6, 2007
    Posts: 3,777

    THE FRENCHTOWN FLYER
    Member
    from FRENCHTOWN

    Wow! subscribed after just finding this.
     
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  14. The37Kid
    Joined: Apr 30, 2004
    Posts: 28,400

    The37Kid
    Member

    WOW! That is a beautiful piece of machining. The first thing I noticed in the first photo was the head bolt that was hidden under the aluminum cover. I thought there would be a stud on the bolt, but see an Allen bolt does the job. Bob
     
    Last edited: Sep 29, 2021
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  15. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    With any luck... this Akron-Hed will be running this spring...! There were rumors of a few of these heads running back in the 70’s and 80’s, but I haven’t been able to locate any still at it. Might be the only one...

    The plan is to swap the flat head out for the Akron-Hed. The motor already has an A crank, boxed rods, full pressure oil, etc...

    1CE524F4-F853-4CD9-B8B1-751C5D4D22E6.jpeg
     
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  16. stubbsrodandcustom
    Joined: Dec 28, 2010
    Posts: 1,480

    stubbsrodandcustom
    ALLIANCE MEMBER
    from Spring tx

    Keep up the good work...
     
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  17. The37Kid
    Joined: Apr 30, 2004
    Posts: 28,400

    The37Kid
    Member

    Great looking speedster! Nice to see one so period correct. Bob

    I did notice the early running board bracket turned up side town to hold the exhaust pipe in place, nice touch.
     
    Last edited: Sep 29, 2021
    loudbang likes this.
  18. Just checking in on the progress. Still in disbelief at how awesome this is. True craftsmanship in this thread. Keep the updates coming.
     
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  19. Keep up the great work! Interesting info on the head!
     
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  20. RodStRace
    Joined: Dec 7, 2007
    Posts: 2,699

    RodStRace
    Member

    Blow us all away with making your own carb components.
    Then offhand mention that you are doing it to feed a mid-twenties OHV conversion that you have engineered to accept rockers and stands you designed and made, too!
    Uh, WOAH!!!
    [​IMG]
     
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  21. noboD
    Joined: Jan 29, 2004
    Posts: 7,771

    noboD
    Member

    Is the Akron-Hed the one that uses ball bearings in tubes to actuate the valves?
     
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  22. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    Yep! The valves in this head are positioned 90 degrees from the typical T/A overhead conversion (kinda like a hemi). This makes the valve train much less simple, and Hal’s answer was the tubes and balls approach. As the story goes, it worked great... for a while!:rolleyes:
     
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  23. noboD
    Joined: Jan 29, 2004
    Posts: 7,771

    noboD
    Member

    I think there are two engines at Speedy Bill's museum like that. I'll bet it sounds different, lots of action.
     
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  24. The37Kid
    Joined: Apr 30, 2004
    Posts: 28,400

    The37Kid
    Member

    Lepus and loudbang like this.
  25. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    It’s all good Bob, I have been intrigued by the Akron-Hed for many years... and pictures of the head at Speedway museum was as close as I ever could get to one. The head at the museum is done up nicely, but is missing the exhaust header. I don’t plan on using the header on my car, and have been considering loaning it to Speedway for display

    Pic taken while mocking up the valve cover
    867821B5-FC2D-48EA-8D88-196B7CB86F85.jpeg
     
    TFoch, unforgiven and loudbang like this.
  26. The37Kid
    Joined: Apr 30, 2004
    Posts: 28,400

    The37Kid
    Member

    Nice header, guess the front exit is for steering clearance. Really admire your machining skills. Back in the late 1970's I had a Twin Cam HAL midget engine, everything was custom cast and machined. Bob
     
    loudbang likes this.
  27. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    Yeah not sure exactly why Hal chose the front dump header... there really is no good place to put the exhaust on the left side of a T engine as the steering shaft is almost always in the way. My car has a worm and sector steering box and a water pump on this side, so straight out is pretty much the only option
     
    loudbang likes this.
  28. Phenomenal work, I lost track of this thread, I was gobsmacked when I saw the photos on the "Monthly Banger Meet" thread, amazing! I am interested in a pair if you decide to go into production.

    [​IMG]
     
    TFoch, The37Kid and loudbang like this.
  29. Kevin Pharis
    Joined: Aug 22, 2020
    Posts: 224

    Kevin Pharis

    The plan is to finish at least this first 5 carbs... so far 3 of these are extra and will be available as parts or complete. Model S-B Downdraft

    30B56214-3522-4C76-BF6C-EEDE3A7CE3FC.jpeg

    Contact me directly to discuss details
    D275BBD4-534F-4673-9469-92C22F851843.jpeg
     
    41 GMC K-18, Jimmy B, chrisp and 3 others like this.
  30. TerrytheK
    Joined: Sep 12, 2004
    Posts: 921

    TerrytheK
    ALLIANCE MEMBER

    Saw your posts on the September banger thread and after reading about what you've done here I can now say my mind is officially blown. Thanks for letting us in on it.
     
    41 GMC K-18 and loudbang like this.

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