If we are ever going to solve the BSFC problem the first thing
we are going to need is a way to make a prototype test rotor on a NC mill.

As soon as you start cutting into the stock Mazda rotors you break through
into the oil cooling cavities.

Test cast iron rotors as used in the Mazda are too expense as first
one needs to make a complex mold along with new core boxes
and smaller oil cooling cavities.

That takes too long and it is too expensive for R&D.

The answer is a two piece steel  rotor like this.

That gives you the freedom of reducing the oil cooling cavities in
the rotor to build complex two level combustion chambers in the face
of the rotor using just an NC Mill.

My squish flow bypass idea is an example of this.

This opens up a myriad of possibilities. All the visible CFD and transparent
engine video will do no good unless you can prove it works,

Paul Lamar

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