Agreed.

I followed IMSA car road racing in the ‘80’s and Mazda ruled GTU which is Grand Touring Under 3.0 liters.

Many competitors complained that Mazda was given an unfair, +50% displacement capacity due to the unfair way a rotary was classified.

Love the motors and tech but please…..



Quote Originally Posted by Lake X Kid View Post
How do you quantify cubic-inches/liters for a Rotary engine?

A) One rotor has 3 combustion surfaces/heads. Therefore, (per each rotor) 3 x combustion chamber area = cubic-inches/liters.

B) One rotor/combustion chamber. Therefore, each rotor is only designated as only having 1 combustion head. 1 x combustion chamber area = cubic-inches/liters.

I am wrong to think the rotor engine should be classified as example A. Giving the rotor engine & the conventional combustion piston engine equal footing in engine size comparison.

Example B, seems to me, to give the rotary engine an unfair advantage in racing classification against piston engines.