Paul,

Sorry, but you got my juices working and aside to your production punch
press.  IF when you machine the 2 in. holes in the outer plate, you tilt
the table 10 - 15 degrees you would be to move the U pipe closer by an
inch or so, which gives you more on the top end( I suppose you could
grind a regular plate by hand to try it ).  The result would be like the
old manifold form, and it shouldn't affect the flow too much, my rough
hand sketch is attached.

Tony2

We punch the the two inch diameter holes Tony.

Paul Lamar

The juices still going, once the oval shape is ascertained it could still

be applied to punching which is adequate for a welded joint, it's just food
for thought.

Tony2

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