This idea uses everything I have learned in the last five
years and all the ideas that readers have put forward
and everything that Mazda has learned that I know about.

It is a peripheral intake port with a side exhaust port and
with a variable length trombone dynamic chamber.
The advantage of the peripheral intake port combined with
the side exhaust ports  is better fuel consumption  combined with
maximum breathing and maximum horse power. It is also a high Q version
of the dynamic chamber as there are only two ports with
only one runner length at any particular setting.

The big advantage to Dan Ruggerillo's trombone idea is you get 
a big change in tuned RPM for a small movement of the trombone.

This adds nothing to the height of the engine so it should fit
under any cowl. Even in something like a Lancair 320.

It is stiff so it can be precision made to slide easily
in the two hydraulic cylinders. It is very simple.
The dual butterfly valves are located as close to the rotor
housings as possible known to improve the idle.

It is light weight for a tuned intake manifold.
It can be set for max power at various RPMs or for
the lowest fuel burn.

It should generate close to 240 HP at 6000 RPM and 350 HP at 8000 RPM
if I can get it short enough.

In the 3D rendering shown here the outer movable portion of the 
manifold is actually separated from the annular hydraulic cylinder portion 
for illustration purposes only. The actual manifold will only
extend out from the engine eight or ten inches. The total loop length
should be 17 inches at 6000 and less at higher RPMs. A half inch change
in annular piston position will change the loop length by one
inch. 

I am not sure how short I can get it so I am not sure 
what exactly what the top tuned RPM will be. Still working
on that compromise. I do know that if it is tuned for 6K top end 
it will work well down to at least 5K and below giving
optimum BSFC.
  
Paul Lamar
 
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