George Lendich wrote:

Paul and Jerry,

I've been thinking about these inlet manifolds and was wondering if
rectangular tubes made from flat sheet could be used without  too
many negatives.

The benefits are the bends would be so much easier to do.

The height would be maintained at the minimum for those with limited
over engine area.

The injectors would be OK side by side without needing to angle them
to the centre of the tube.

The negatives would be you couldn't use a round bellshaped inlet -
however a square one might be near as good.

I don't know how much the square corners (in the runners) would be
less efficient than a round tube - you would however have more
volume
area.

Some suggestions on the negatives would be appreciated.
George ( down under)

Too much welding of thin sheet :)

Paul Lamar

Here is what it could look like with the retaining clips.

Paul Lamar

I think the clips should be set so that they exert clamping pressure
forcing the injector into the socket.  Jerry

That would not hurt but a little air leak around the injector bodies is not
going to hurt a normally aspirated engine.  You could slot the clips, press 
it in  and tighten the bolt. Not at all critical.The fuel O-rings will seal over
a wide range.

Paul Lamar
 
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