> How would one go about Raising a rotary's compression ratio?
    >
    > For the same compression ratio as a piston engine does a rotary
   engine
    > require more, less or equal octain?
    > Thanks,
    > Brent Hasty



    > Requires changing the depression depth in the rotor flanks.
    >
    > Paul Lamar ...No rotor no motor.


   I can see it would be easy to lower compression by removing
   material, to raise
   you would have to fill in the depression, typically how? with weld?

   Thanks,
   Brent Hasty

   You might try screwing in a curved steel plate.
   Or braze it in.


   Paul Lamar ...No rotor no motor.

I have heard of people filling in the depression with a ceramic.  The
guy who did my ceramic coatings on my manifold and housing told me of a
guy who had been coming in to have it done on the rotors for his race
car.  Not sure how well it worked.

Remember that it is important to match the weight, or have the rotors
re-balanced when you are done.