The Honda B16A5 engine is a highly acclaimed 4-cylinder engine that was widely used in the Honda Civic Si-RII in the late 1990s.
This engine was known for its high-performance capabilities, making it a popular choice among automotive enthusiasts and racers.
Understanding the specs and performance of an engine is crucial for car owners and potential buyers as it helps them make informed decisions about their vehicles.
In this article, we will provide an in-depth overview of the Honda B16A5 engine and its key specs and performance characteristics.
Honda B16A5 Engine Overview
The Honda B16A5 is a 1.6-liter 4-cylinder engine that was produced by Honda in the late 1990s. It was specifically designed for the Japanese Domestic Market (JDM) Honda Civic Si-RII (EK4), which was sold between 1996 and 2000.
This engine was known for its high-performance capabilities and was highly regarded among automotive enthusiasts and racers.
The B16A5 engine featured a displacement of 1.6 liters, which equates to 97.3 cubic inches or 1,595cc.
This engine had a high compression ratio of 10.4:1, which helped it produce impressive power outputs of 174 horsepower at 7,800 RPM and 150 N⋅m of torque at 6,300 RPM.
The engine’s redline was set at 8,500 RPM, allowing for high-revving performance. The B16A5 was only available with a Y21 transmission and was only offered on SiRs with automatic transmissions.
In terms of performance, the B16A5 engine was highly regarded for its power delivery and acceleration capabilities. Its high compression ratio and high redline allowed for a strong and responsive power band.
Additionally, this engine was known for its fuel efficiency and low emissions, making it an eco-friendly option for car owners.
The B16A5 engine was also praised for its handling and drivability, making it a joy to drive on both the street and the track.
Furthermore, the B16A5 was known for its reliability and durability, making it a solid choice for long-term ownership.
Overall, the Honda B16A5 engine was a highly regarded powerplant that was known for its high-performance capabilities and reliable performance.
It is still a popular choice among car enthusiasts and racers, and it is widely regarded as one of Honda’s best engines.
Specification Table for B16A5 Engine
| Specification | Value |
| Engine Type | B16A5 |
| Displacement | 1.6 L (97.3 cu in) |
| Compression Ratio | 10.4:1 |
| Horsepower | 174 hp at 7,800 RPM |
| Torque | 150 N⋅m (111 lb⋅ft) at 6,300 RPM |
| Redline | 8,500 RPM |
| Transmission | Y21 |
| Availability | 1996-2000 Honda Civic Si-RII (JDM only) |
Source: Wikipedia
Comparison With Other B16 Family Engine Like B16A1 and B16A2
Here is a comparison between the B16A5 engine and two other engines in the B16 family: the B16A1 and B16A2.
| Specification | B16A5 | B16A1 | B16A2 |
| Engine Type | B16A5 | B16A1 | B16A2 |
| Displacement | 1.6 L (97.3 cu in) | 1.6 L (97.3 cu in) | 1.6 L (97.3 cu in) |
| Compression Ratio | 10.4:1 | 9.0:1 | 9.2:1 |
| Horsepower | 174 hp at 7,800 RPM | 160 hp at 8,000 RPM | 160 hp at 8,000 RPM |
| Torque | 150 N⋅m (111 lb⋅ft) at 6,300 RPM | 111 lb⋅ft at 6,500 RPM | 111 lb⋅ft at 6,500 RPM |
| Redline | 8,500 RPM | 8,200 RPM | 8,200 RPM |
| Transmission | Y21 | Y21 | Y21 |
| Availability | 1996-2000 Honda Civic Si-RII (JDM only) | 1988-1991 Honda CRX Si (USDM) | 1992-1995 Honda Civic Si (USDM) |
As you can see from the table, the B16A5 engine was designed for high-performance applications, featuring a higher compression ratio and higher redline compared to the B16A1 and B16A2.
As a result, the B16A5 engine produced higher horsepower and torque outputs compared to the other two engines in the B16 family.
Additionally, the B16A5 was only available in JDM markets, while the B16A1 and B16A2 were available in USDM markets.
It is important to note that while the B16A5 engine is more powerful than the B16A1 and B16A2, it also requires more maintenance and may not be as reliable as the other engines in the B16 family.
However, for those looking for a high-performance engine, the B16A5 is a solid choice.
Head and Valvetrain Specs B16A5
The head and valvetrain specifications for the Honda B16A5 engine are as follows
| Specification | Value |
| Valve Configuration | DOHC |
| Valves Per Cylinder | 4 |
| Valve Diameter (Intake) | 33.0 mm |
| Valve Diameter (Exhaust) | 27.2 mm |
| Valve Lift (Intake) | 9.2 mm |
| Valve Lift (Exhaust) | 8.0 mm |
The B16A5 engine features a DOHC (Double Overhead Cam) configuration, with 4 valves per cylinder. The intake valves have a diameter of 33.0 mm and a lift of 9.2 mm, while the exhaust valves have a diameter of 27.2 mm and a lift of 8.0 mm.
The DOHC design and large valve sizes allow for increased airflow into the engine, leading to higher horsepower and torque outputs.
Additionally, the B16A5 engine uses VTEC (Variable Valve Timing and Lift Electronic Control) technology, which adjusts the cam profile based on engine RPM to optimize performance and efficiency.
The Technologies Used in
The Honda B16A5 engine features the following technologies
1. VTEC (Variable Valve Timing and Lift Electronic Control)
This technology allows the engine to switch between two different camshaft profiles, providing improved performance and efficiency based on engine RPM.
2. DOHC (Double Overhead Cam) Configuration
The B16A5 engine uses a DOHC design, which allows for improved valve control and increased airflow into the engine.
3. High-Performance Pistons
The B16A5 engine features high-performance pistons, designed to withstand the increased combustion pressures and temperatures of high-performance driving.
4. Dual-Stage Intake Manifold
The B16A5 engine uses a dual-stage intake manifold, which provides improved airflow and increased engine performance.
5. High-Performance Engine Management System
The B16A5 engine is equipped with a high-performance engine management system, which allows for precise control of the engine’s functions and improved overall performance.
These technologies, in combination with the high-performance specifications of the B16A5 engine, allow for increased horsepower and torque outputs, as well as improved engine efficiency and reliability.
Performance Review
The Honda B16A5 engine was designed for high performance, and it does not disappoint.
The engine was originally used in the 1996-2000 Civic Si-RII (JDM version) and was rated at 174 horsepower at 7800 RPM and 150 N⋅m (111 lb⋅ft) of torque at 6300 RPM.
The engine’s high compression ratio of 10.4:1, combined with VTEC technology and a high redline of 8500 RPM, allow for a thrilling driving experience.
In terms of acceleration, the B16A5 engine provides quick and responsive acceleration, thanks to its high horsepower and torque outputs.
The engine’s high redline also allows for a wide powerband, giving drivers the ability to extract maximum performance from the engine at high RPMs.
In terms of fuel efficiency, the B16A5 engine is relatively efficient for a high-performance engine, thanks to its VTEC technology and high-performance engine management system.
The engine’s dual-stage intake manifold and high-performance pistons also contribute to improved engine efficiency.
Overall, the Honda B16A5 engine provides a high-performance driving experience, with quick acceleration, a wide powerband, and relatively efficient fuel consumption.
If you’re looking for a high-performance engine for your Honda Civic, the B16A5 is definitely worth considering.
What Car Did the B16A5 Come in?
The Honda B16A5 engine was originally installed in the 1996-2000 Civic Si-RII (JDM version) (EK4).
This high-performance engine was designed to deliver thrilling driving performance and was only offered in the Si-RII with automatic transmissions.
With a displacement of 1.6 liters, a compression ratio of 10.4:1, and a maximum power output of 174 horsepower at 7800 RPM, the B16A5 engine is a popular choice among Honda enthusiasts looking to upgrade their engine.
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