Ilmor announced that they have successfully run the first prototype Ilmor Viper Motorcycle Company engine on the dyno ahead of schedule and are already seeing promising results.
Ilmor have been working on the design and development of the updated Viper Motorcycle 152 cubic inch V-Twin engine since October 2009, as part of the manufacturing agreement between Viper Motorcycle Company, a subsidiary of Viper Powersports, Inc., and Ilmor Engineering announced on January 8, 2010.
The Viper Motorcycles-Ilmor V-Twin will be the motor in the Diamondback Super Cruiser model due to be rolled out in the second quarter of the year. The advanced Ilmor design, intended to both improve performance and lower emissions, includes a new crankcase, which has fully integrated oil pressure and scavenge pump sets, a new barrel housing and new cylinder heads. The addition of a state of the art cooling system, incorporating both oil-cooling and air-cooling will further improve engine output and reliability. The bottom end features a higher compression ratio from new piston assemblies with revised crown pocket details, for improved combustion and exhaust emissions. The crankshaft has been revised to account for the new piston and connecting rod assemblies and reduces overall engine vibration. The updated Ilmor badged engine design retains the distinctive Viper Motorcycle machined and polished billet aluminum look of the predecessor. Viper Motorcycle.