The 2007 Civic Si is equipped with Honda’s 2.0-liter inline-4 engine, the K20Z3, paired with a close-ratio six-speed manual transmission, delivering about 197 horsepower and 139 lb-ft of torque.
Engine at a glance
Key technical specifications are listed below:
- Engine: 2.0-liter inline-4 (K20Z3)
- Valvetrain: DOHC i-VTEC
- Power output: approximately 197 hp (147 kW)
- Torque: approximately 139 lb-ft (188 Nm)
- Redline: around 8,000 rpm
- Transmission/drivetrain: 6-speed manual with a mechanical limited-slip differential; front-wheel drive
These specifications underscore the Si’s high-revving, performance-oriented character within the Civic lineup.
Design and performance notes
The K20Z3 engine in the 2007 Civic Si is part of Honda’s K-series family and is tuned for sporty response with variable valve timing (i-VTEC) on both intake and exhaust timing. The engine’s rev-happy nature, combined with the precise six-speed manual and limited-slip differential, contributes to the Si’s characteristic acceleration and engaging driving experience at higher rpm.
Context and significance
For enthusiasts, the 2007 Civic Si represented a shift toward stronger performance within the Civic range, balancing practical features with a dedicated powerplant. The combination of the K20Z3’s output, chassis tuning, and Honda’s engineering approach helped solidify the Si’s reputation for nimble, engaging dynamics in a compact class.
Summary
In short, the 2007 Honda Civic Si uses a 2.0-liter inline-4 engine, the K20Z3, producing about 197 horsepower and 139 lb-ft of torque, paired with a six-speed manual and a limited-slip differential. This setup fuels the Si’s high-revving character and sporty driving experience within the Civic lineup.