Rotary Engine Specs in P1
#27736 from Jim Downing · Not recommended · Minutes (2019-12 Fastrack)
Thank you for your letter. The Club Racing Board does not recommend this change. Although Balance of
Performance (BoP) adjustments are used to allow different platforms to race together in the same class,
the criterion for a BoP adjustment is limited to a car's rate of acceleration in a speed range before
aerodynamic drag has a significant effect -- typically between 60 and 100 mph. BoP adjustments are not
used to equalize lap time performance, ensure overall competitiveness, or boost class entries. Data
obtained during the 2019 U.S. Majors Tour event at Virginia International Raceway showed that the
Mazda rotary-powered car's rate of acceleration was fully in line with and not at any disadvantage to the
other platforms' performance, so the removal of the car's inlet restrictor is not warranted.