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A circle over a rectangle = swirling ??

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  • A circle over a rectangle = swirling ??

    I probably know the answer but want to confirm my thought...

    I have flanges with 1 3/4 openings and 1 3/4 od tubing. I am building a manifold for my ohv six and its head has rectangular ports that are about 1 x 1 1/2.

    My thought is I can get by with round tubes over rectangular ports but it will work a whole lot better with rectangular tubes matched to rectangular ports, just need to find or chop a tube to the right dimension.

    Just because I can build it does not mean I know the physics of gases or flow, it never hurts to sk

    Jeff T.

    Jeff T.

    "I'm getting nowhere as fast as I can"
    The Replacements.
    \"I\'m getting nowhere as fast as I can\"
    The Replacements.

  • #2
    Since the factory went with rectangle runners into rectangle ports, I would use tubing made to match. [^]

    Second Generation Stude Driver,
    Proud '54 Starliner Owner


    • #3
      Or you could blacksmith the tubing to be rectangular....Not an easy task, but possible.

      Tom Bredehoft
      '53 Commander Coupe (since 1959)
      '55 President (6H Y6) State Sedan
      ....On the road, again....
      '05 Legacy Ltd Wagon
      All Indiana built cars