C Sports Racer
C Sports Racer (CSR) now known as Prototpye 1 (P1) is a class in the Sports Car Club of America. it consists of open top prototype style cars. The maximum displacement is 1615cc, in a 2 valve crossflow engine, with a minimum weight of 1300lbs w/driver. Two cycle or 4 valve/4 cycle motors between 850cc and 1300cc are permitted with a minimum weight of 1200lbs. Supercharging and turbocharging are permitted within limits, and with a maximum displacement of 765cc. Some CSRs are Formula Atlantic or Formula SCCA cars converted by adding bodywork to the chassis.
C Sports Racer at the SCCA National Championship Runoffs
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- "SCCA Runoffs Driver Histories" (PDF). SCCA. Retrieved 28 August 2016.
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