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OS GIKEN famous TC-16 MA2 engine, Bluebird H510

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Published on Feb 1, 2008

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 engine outputed 232p PS and 203 Nm of torque.

The actual design was build via wooden negatives which were made of cherry wood. The particular head 'TC-16 MA2' had a limited production and is still sought after by fans and lovers.

One of the chief engineers at OS Giken joined the company in 1994 and learned allot about their twin cam head designes. He also noticed that they still had the parts in the warehouse. He asked permission for building one more racing engine.

The movie shows the start up of this particular engine. It is still used for racing. They later shifted the rev limit from 9000 to 10500 rpm. Torque was still high at this large velocity's.

OS GIKEN is known for their sequential gearboxes, Limited slip differentials and clutches. A lot of people don't know but they had a big influence in racing history

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