F22C1
In 2004, Honda produced a stroked 90.7 mm (3.57 in) version of the F20C, increasing displacement by 160 cc (9.8 cu in) to 2,157 cc (131.6 cu in). Dubbed the F22C1, it was originally designed for the North American market being introduced for the 2004 model year. Maximum power output was maintained at 237 hp (177 kW) @7800 rpm. Rated torque increased from 153 lb·ft (207 N·m) at 7500 rpm for the F20C to 162 lb·ft (220 N·m) at 6500 rpm for the F22C. The redline was reduced from 9000 rpm to 8200 rpm, mandated by the longer travel distance of the pistons. Peak horsepower output is rated identical to the F20C.
The F22C1 was used exclusively in the North American market for 2004 and 2005 with the F20C being used in all other markets. Despite the displacement increase, the car to which the F22C1 is mated retains the name of Honda S2000. In 2006, the engine fully replaced F20C engines in the Japanese market as well which resulted in a drop in rated power output from 250 PS (247 bhp) to 242 PS (239 bhp). Outside of Japan and the United States, the F20C continued to be the only available engine.
Applications:
- 2004–2009 Honda S2000 (F22C1)(North America)
- 2006–2009 Honda S2000 (Japan)
Read more about this topic: Honda F20C Engine