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Thread: Unknown Plumber Intake Manifold

  1. #1
    Join Date
    Nov 2010
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    182

    Default Unknown Plumber Intake Manifold

    I just want to know if anyone out there is familiar with this aftermarket Knucklehead - Panhead manifold. I have 2 of them. One of them had instructions placed inside. I have not seen any old ads for them.CIMG1534.JPGimage0.jpgCIMG1536.JPGCIMG1538.JPGCIMG1540.JPG
    Craig

  2. #2
    Join Date
    Jan 2006
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    Menomonie, WI
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    It almost looks like it was made to fit a 1940 and up Harley 4 bolt 1 1/2" carburetor to 1939 and down heads which normally had a 3 bolt 1 1/4" carburetor. Neat.

    Jerry


    Quote Originally Posted by 41craig View Post
    I just want to know if anyone out there is familiar with this aftermarket Knucklehead - Panhead manifold. I have 2 of them. One of them had instructions placed inside. I have not seen any old ads for them.CIMG1534.JPGimage0.jpgCIMG1536.JPGCIMG1538.JPGCIMG1540.JPG
    Craig

  3. #3
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    Nov 2010
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    Jerry; When I bought this one, I figured it was for a stroker. Cut to fit.
    Craig

  4. #4
    Join Date
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    Central Illinois, USA
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    I have no clue, Craig!

    But many thanks for posting the pics for posterity.

    (and my library...)

    ...Cotten
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  5. #5
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    Nov 2010
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    Cotten; I dig these oddballs out every now and then to possibly expand our knowledge.
    Craig

  6. #6
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    Jun 2001
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    Was Jerry right, Craig?

    Its a small port?

    (I tried to juggle the tape measure with my photoeditor, but its got double-vision.)

    Cotten
    PS: Typos on the instruction tab says somebody tediously cranked each one out on a Remington, maybe.
    My ribbon's too dry to try to compare.
    Last edited by T. Cotten; 11-17-2019 at 04:20 PM.
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  7. #7
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    Nov 2010
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    Cotten; It is 4" end to end. This is why I thought it was for a stroker.
    Craig

    P.S. Sorry for the crappy pics.
    Last edited by 41craig; 11-17-2019 at 05:01 PM. Reason: Later thoughts

  8. #8
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    What is the diameter of the spigot?

  9. #9
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    Nov 2010
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    Quote Originally Posted by Jerry Wieland View Post
    What is the diameter of the spigot?
    Jerry; The spigot to the head is the same as the 74 manifold. The spigot to the carb is larger than the 74 manifold. Approx. 1.620 vs. approx. 1.565.
    CraigCIMG1544.JPGCIMG1541.JPGCIMG1542.JPGCIMG1543.JPG

  10. #10
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    That popped the balloon, Craig!

    If it was 'small port', it might have been pretty desirable.

    But the grossly oversized bore just means fuel can 'puddle' in it from the pressure drop.

    If a four-bolt Linkert was bored out that big, the idle bleeds would just be one big hole.

    ...Cotten
    Last edited by T. Cotten; 11-18-2019 at 01:39 PM.
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

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