A circle over a rectangle = swirling ??

[Jeff T.]

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.

[StudeRich]

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

StudeRich

[Tom Bredehoft]

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

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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