OS GIKEN famous TC-16 MA2 engine, Bluebird H510

The L-series Nissan engine made it’s first appereance in 1967. It was widely used in racing due to it’s so called ’bullet proof’ bottom end. The main limitation was the head design, tuners began to search for ways to improve the performance. In 1973 a Japanese engineer named Osamu Okazaki designed a whole new cilinderhead for the L-series engine. The design used 4 valves per cilinder and a narrow included valveangle of 20 degrees. Combined with racing cams, racing pistons and DCOE Webers the 1888 cc engi