What motor is in a 2009 Civic SI?
The 2009 Honda Civic Si is powered by a 2.0-liter inline-4 i-VTEC engine, the K20Z3, delivering about 197 horsepower and 139 lb-ft of torque, paired with a six-speed manual transmission.
Engine details
The Si’s engine is a high-revving, naturally aspirated 2.0-liter four-cylinder designed for sporty performance. It uses Honda’s i-VTEC variable valve timing and lift control to optimize both peak power and efficiency across a wide RPM range.
Technical specifications
Key technical specifications include engine code, displacement, configuration, and output.
- Engine code: K20Z3
- Displacement: 2.0 L (1998 cc)
- Configuration: Inline-4, DOHC with i-VTEC and VTC
- Power output: 197 hp at 7,000 rpm
- Torque: 139 lb-ft at 6,500 rpm
- Redline: around 8,000 rpm
- Compression ratio: 11.0:1
- Transmission: 6-speed manual
- Drivetrain: Front-wheel drive (FWD)
In summary, these specifications define the Civic Si’s powerplant as a high-revving, performance-oriented engine that distinguishes the Si from other Civic trims of the era.
Context and performance notes
The K20Z3 is celebrated among enthusiasts for its strong high-end pull and rewarding manual transmission experience. Its lightweight architecture, refined intake and exhaust flow, and Honda’s engineering philosophy contributed to a spirited driving character, particularly in models designed for enthusiasts rather than everyday commuting.
Summary
The 2009 Civic Si uses Honda's 2.0-liter K20Z3 i-VTEC four-cylinder engine, producing 197 horsepower and 139 lb-ft of torque, paired with a six-speed manual transmission. This combination embodies the Si’s emphasis on revs, responsiveness, and sporty handling characteristic of the generation.
