Intake manifold construction, intercoolers

[Bruce]

I was trying to find it, but there is a net site where they get into
Hemholtz and manifolding.  On the V6s they contend that two groups of 3 are
the best answer.
   Needless to say, I'm of the single plenum thought pattern.
The closer the runners face an volume of air approaching atmospheric, the
better they will flow.   Of all the manifolding available which generates
both the best torque and HP numbers?.   The lowly Independent Runner.
There are several jillion theories as to why, but IMO, it's just a matter of
the air not having to snake around at all to get to the intake valve.  I got
to work with alot of IR manifolds, and engines, and have yet to see anything
approach them.  Now, they use individual butterflies, but the answer to why
is that they have too.  Now how would one try to approximate an IR with
Simplicity in mind? (No Correction Needed).   Use your runners and tie them
to a big arsed plenum, and single butterfly.  the large plenum will
approximate the atmosphere, or in this case, be the atmosphere, and with the
single butterfly the entering air will have the least inertia, and so will
be able to bend around to  best fill the plenum.
Bruce

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> Additionally, why two plenums and two TBs?  I can see it if you're doing
> twin turbo but otherwise I don't see it.  I'd just go for the most direct
> means of delivering the air to the cylinder, trying to line up the port in
> the head with the runner as well as possible.
> Craig Dotson

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