The new Mazda RT24-P will race in the IMSA WeatherTech SportsCar Championship. After significant on-track testing, it will make its racing debut at the 2017 Rolex 24 at Daytona in late January. The approximately 600-horsepower engine, developed and raced with Advanced Engine Research (AER), is a 2.0-litre, inline four-cylinder turbocharged engine.
Lotus 48 Cosworth 48/1 Ford Cortina Block, 4 Valves per cylinder or FVA Head. Car debuted by G. Hill early 1967. Customers preferred the faster Brabham BT23 however.The Number of events held listed at Old Racing Cars.com
The Macomber Rotary engined car - Collector and racing enthusiast Eric Coyne of California is working on a book covering early West Coast races and has found that a Macomber Racing car was involved in one. This news prompted a bit more research here that turned up the photo (above) of Walter G. Macomber’s car powered by one of his seven-cylinder rotary engines.