Its existence has yet to be officially confirmed by Honda, but that hasn't stopped the brand from continuing to prepare a Daytona Prototype version of its championship-winning P2 engine for use in the TUDOR United Sportscar Championship. RACER has learned the direct-injected 3.5-liter twin-turbo V6 engine, which stood a decent...

Michael Shank Racing Riley-Ford. (LAT photo) The detailed analysis of what went wrong with Prototype tires during the first day of TUDOR United SportsCar Championship testing at Daytona International Speedway has only just begun, and certainly will occupy the coming days for IMSA, tire manufacturer Continental and Daytona Prototype chassis...