Automobile Race. The PGC10/KPGC10 went on to win 49 consecutive races held at Fuji, Suzuka, Tsukuba, and Hokkaido; although the streak ended after the 49th win on October 10, 1971, the GT-R won its next race for its 50th victory on March 20, 1972, also held at the Fuji Circuit. Compared to the Nissan L-series straight-six engines, the S20 was too small and too complex, despite it being a twin-cam with four valves per cylinder. In the 1970 All-Japan Fuji 1000km race, six Fairlady Z432R models with the S20 were entered, as well as one HS30 Fairlady 240Z with an L24. The L24-powered Fairlady 240Z won easily. Due to its simpler and more robust design, the L-series went on to become the most favored engine in motorsport and tuning, while the S20 remains relatively obscure. See also Prince Motor Company Nissan Skyline GT-R List of Nissan engines Notes References External links Detailed pictures of major components, taken during restoration. S20 Straight-six engines Gasoline engines by model