B16 Engine

Specifications

The Honda B16 engine is a legendary 1.6 L inline-4, naturally aspirated engine known for its high-revving nature and reliability. Featuring DOHC 16 valves and VTEC technology, it optimizes both efficiency and power, delivering a thrilling driving experience. Standard B16A variants produce 150–170 hp with torque around 150 Nm, while the high-performance B16B, found in the Civic Type R, delivers up to 185 hp and 160 Nm of torque, revving smoothly up to 9,000 rpm. The engine is constructed with a lightweight aluminum alloy block and head, a bore and stroke of 81.0 mm × 77.4 mm, and a multi-point fuel injection system, balancing durability with performance.

Its VTEC system engages between 5,200–6,100 rpm, boosting top-end power without compromising low-end drivability. Widely used in Honda Civics, CR-X, and Integra models, the B16 is celebrated for its responsive throttle, high power-to-liter ratio, and reliability, making it a favorite among tuners and enthusiasts who seek a combination of performance, efficiency, and longevity in a compact engine.     

Model Compatibility

B16A

The first-generation Honda B16A marked a major milestone in performance engineering as the engine that introduced VTEC (Variable Valve Timing and Lift Electronic Control) to Honda’s lineup. Developed for early JDM performance models such as the Integra XSi (DA6) and Civic SiR (EF8/EF9), this 1.6-liter DOHC inline-four delivered approximately 160 horsepower, an impressive figure for its era. Known for its high-revving nature, lightweight aluminum construction, and razor-sharp throttle response, the first-gen B16A quickly earned legendary status among enthusiasts.

B16A1

The B16A1 is the European-spec version of the original B16A and was featured in early Honda Civic and CRX performance models sold in Europe. Retaining the same 1.6-liter DOHC VTEC architecture, it produced around 160 horsepower, offering strong mid-range pull and exhilarating top-end performance. With a redline exceeding 8,000 RPM, the B16A1 became popular for its reliability, tuning potential, and motorsport-inspired driving character.

B16A2 / B16A3

The B16A2 and B16A3 represent later export versions of the B16A engine, designed to meet international market requirements while preserving performance. The B16A3, in particular, was offered in the 1994–1995 Honda del Sol SiR for the US market. These engines maintained the high-revving VTEC personality of earlier versions, producing similar power outputs while incorporating emissions and durability refinements. Their balance of everyday drivability and performance made them a favorite in swap projects worldwide.

B16A (Second Generation)

The second-generation B16A was introduced with minor refinements and continued its legacy in later JDM models such as the Civic SiR (EK4) and CR-X del Sol SiR (EG2). While power output remained close to 160 horsepower, updates focused on improved reliability, smoother VTEC engagement, and enhanced engine management. This version preserved the engine’s trademark high-RPM performance and solidified the B16A’s reputation as one of Honda’s most iconic naturally aspirated engines.

Frequently Asked Questions