The Honda K20A engine is part of the K series of four-cylinder, four-stroke engines released by the Honda Motor Company. These engines featured Honda's Variable Valve Timing and Lift Electronic Control (i-VTEC) system, which offered continual variable camshaft phasing. The K series of engines first appeared in 2001.
The K20A engine has a power output rating of 154. It generates 220 horsepower at 8,000rpm and up to 152 pound-feet of torque when at 7,000rpm. It features a 16-valve mode and a 12 valve economy mode. This engine uses a standard intake-to-combustion-to-exhaust engine cycle.
The Honda i-VTEC system seeks to improve a standard internal combustion engine by increasing the volumetric efficiency. This system has two camshaft profiles, and it can automatically switch between these two profiles depending on the engine's needs. The intake camshaft can move between 25 and 50 degrees when the vehicle is in motion. Your engine's cam gear, controlled by a computer system, manages these changes. The actual phase change is affected by both the rpms and engine load. This system first appeared in the 2003 Honda Civic.
The K20A i-VTEC system features a variable valve timing control (VTC) actuator, which controls the timing of the valve. This VTC actuator is actually managed by your oil pressure. It provides both continuous and dynamic valve timing. The intake manifold on this engine features intake runners that are all the same length, and the throttle body is larger than those in older models. The exhaust and intake ports are smooth, to improve airflow to the cylinders. The exhaust manifold is a 4-2-1 Tri-Y design.
It comes with both manifold absolute pressure (MAP) and mass air flow (MAF) sensors, which ensure that the correct amount of airflow gets into the engine. The engine control unit (ECU) on this engine controls the MAF sensor. The K20A i-VTEC also comes with hydraulic power steering and Drive By Wire (DBW) throttle control.
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