What type of motor is in a S2000?

Honda F22C1 engine found in the S2000.

The Honda S2000 has 2 motors depending on the year and region that is was made in. For US models made between the year 2000 to early 2005 It had the F20C motor which red lined at 9,000rpm's. For US models mid 2005- May 2009 it came with the F22C motor which red lined at 8,500rpm's. The final "Ultimate" 2009 S2000's made only in Europe came with the F20C motor.