The J37A2 engine is a 3.7-liter V6 engine produced by Honda. It was first introduced in 2009 and was primarily used in the Acura RL luxury sedan.
With a powerful output of 300 horsepower and 271 lb-ft of torque, the J37A2 engine was designed to deliver an impressive driving experience.
In this article, we will provide an overview of the engine specifications, a detailed performance review, and a comparison with other engines in the market.
We will also explore the history of the J37A2 engine and its place in the automotive industry.
Honda J37A2 Engine Overview
The Honda J37A2 engine is a 3.7-liter V6 engine that was produced from 2009 to 2012. It was primarily used in the Acura RL luxury sedan and was designed to deliver high performance and efficiency.
The engine has a displacement of 3.7 liters, or 223.6 cubic inches, and a bore and stroke of 90 mm x 96 mm.
The engine has a compression ratio of 11.2:1 and is capable of producing 300 horsepower at 6300 RPM and 271 lb-ft of torque at 5000 RPM.
The J37A2 engine features a 24-valve SOHC VTEC system that operates both the intake and exhaust valves. This allows for improved airflow and engine performance.
The engine also uses a multi-point fuel injection system, known as PGM-FI, which improves fuel efficiency and reduces emissions.
In terms of performance, the J37A2 engine offers quick acceleration and a top speed of over 150 mph. Despite its powerful output, the engine is also fuel-efficient, delivering an impressive driving experience.
The engine is also known for its smooth power delivery and responsiveness, making it a popular choice among luxury sedan owners.
In conclusion, the Honda J37A2 engine is a well-designed and high-performance engine that delivers an impressive driving experience.
With its powerful output, fuel efficiency, and advanced technology, it is a great example of Honda’s commitment to producing high-quality engines for their vehicles.
Specification Table for J37A2 Engine
| Specification | Detail |
|---|---|
| Engine | J37A2 |
| Production | 2009-2012 |
| Vehicle | Acura RL |
| Displacement | 3.7 L (223.6 cu in) |
| Bore and Stroke | 90 mm x 96 mm |
| Compression Ratio | 11.2:1 |
| Power | 300 hp at 6300 RPM |
| Torque | 271 lb-ft at 5000 RPM |
| Valvetrain | 24v SOHC VTEC (intake and exhaust) |
| Fuel Control | Multi-point fuel injection (PGM-FI) |
Source: Wikipedia
Comparison With Other J37 Family Engine Like J37A1and J37A4
The J37A2 engine is part of the J37 engine family produced by Honda. The J37A1 and J37A4 are other engines in the same family, with some differences in their specifications and capabilities.
| Specification | J37A2 | J37A1 | J37A4 |
|---|---|---|---|
| Engine | J37A2 | J37A1 | J37A4 |
| Production | 2009-2012 | 2006-2008 | 2012-2017 |
| Vehicle | Acura RL | Acura RL | Acura RLX, MDX |
| Displacement | 3.7 L (223.6 cu in) | 3.7 L (223.6 cu in) | 3.7 L (223.6 cu in) |
| Bore and Stroke | 90 mm x 96 mm | 90 mm x 96 mm | 90 mm x 96 mm |
| Compression Ratio | 11.2:1 | 11.0:1 | 11.0:1 |
| Power | 300 hp at 6300 RPM | 300 hp at 6300 RPM | 310 hp at 6300 RPM |
| Torque | 271 lb-ft at 5000 RPM | 271 lb-ft at 5000 RPM | 272 lb-ft at 4500 RPM |
| Valvetrain | 24v SOHC VTEC (intake and exhaust) | 24v SOHC VTEC (intake and exhaust) | 24v SOHC VTEC (intake and exhaust) |
| Fuel Control | Multi-point fuel injection (PGM-FI) | Multi-point fuel injection (PGM-FI) | Multi-point fuel injection (PGM-FI) |
The J37A2 engine is similar to the J37A1 in terms of displacement, bore and stroke, compression ratio, and valvetrain technology.
Both engines have a power output of 300 horsepower and 271 lb-ft of torque. The main difference between the two engines is the production year, with the J37A2 being produced later.
The J37A4 engine, on the other hand, is slightly different from the J37A2 and J37A1. It has a slightly higher power output of 310 horsepower and 272 lb-ft of torque.
It was also used in different vehicles, including the Acura RLX and MDX. Despite these differences, all three engines in the J37 family share many similar specifications and technologies, making them high-performance and efficient engines.
Head and Valvetrain Specs J37A2
The J37A2 engine has a 24-valve SOHC (Single Overhead Cam) VTEC (Variable Valve Timing and Lift Electronic Control) valvetrain, which means it has two camshafts (one for intake and one for exhaust valves) that are responsible for operating the valves.
The VTEC system allows the engine to adjust the lift and duration of the valves, optimizing performance and fuel efficiency.
The J37A2 engine has 4 valves per cylinder, providing increased airflow and combustion efficiency compared to traditional 2-valve engines.
The SOHC design is lighter and more compact than a DOHC (Dual Overhead Cam) design, allowing for improved engine balance and reduced vibration.
In summary, the head and valvetrain design of the J37A2 engine includes
- 24-valve SOHC configuration
- VTEC technology for optimized valve lift and duration
- 4 valves per cylinder for improved airflow and combustion
- SOHC design for improved engine balance and reduced vibration.
The Technologies Used in
The J37A2 engine uses several advanced technologies to improve its performance, efficiency, and emissions.
Some of these technologies include
1. Vtec (Variable Valve Timing and Lift Electronic Control)
VTEC is Honda’s signature technology that optimizes the lift and duration of the engine’s valves, improving performance and fuel efficiency.
2. Multi-point Fuel Injection (Pgm-fi)
The J37A2 engine uses Honda’s PGM-FI system, which injects fuel into multiple points in the engine for improved combustion and reduced emissions.
3. Aluminum Block and Cylinder Heads
The J37A2 engine uses lightweight aluminum for its block and cylinder heads, reducing weight and improving engine response.
4. Direct Ignition System
The J37A2 engine uses a Direct Ignition System (DIS), which provides more accurate and reliable ignition timing compared to traditional distributors.
5. Drive-by-wire Throttle System
The J37A2 engine uses a Drive-by-Wire Throttle System, which eliminates the traditional mechanical throttle linkage in favor of an electronic control system. This results in improved throttle response and control.
6. Dual-stage Intake Manifold
The J37A2 engine uses a Dual-stage Intake Manifold, which optimizes airflow into the engine based on engine speed and load.
7. Knock Control System
The J37A2 engine uses a Knock Control System, which monitors engine knock (detonation) and adjusts ignition timing to prevent engine damage.
These advanced technologies work together to provide the J37A2 engine with improved performance, efficiency, and emissions, making it one of Honda’s most advanced and capable engines.
Performance Review
The J37A2 engine delivers outstanding performance, delivering 300 horsepower (224 kW) at 6300 RPM and 271 lb-ft (367 Nm) of torque at 5000 RPM.
This engine provides a great balance of power and efficiency, making it a popular choice for high-performance vehicles.
One of the standout features of the J37A2 engine is its VTEC system, which provides improved engine performance and fuel efficiency. The VTEC system adjusts the lift and duration of the valves, optimizing engine breathing and allowing for more power at high RPMs.
The J37A2 engine also benefits from Honda’s advanced Multi-point Fuel Injection (PGM-FI) system, which provides improved combustion and reduces emissions.
The lightweight aluminum block and cylinder heads also contribute to the engine’s performance by reducing weight and improving engine response.
In addition, the J37A2 engine’s Drive-by-Wire Throttle System and Direct Ignition System provide improved throttle response and control, and the Dual-stage Intake Manifold optimizes airflow into the engine based on engine speed and load.
Overall, the J37A2 engine provides outstanding performance, with a great balance of power and efficiency. Its advanced technologies make it one of Honda’s most advanced and capable engines, and it’s no surprise that it’s a popular choice for high-performance vehicles.
What Car Did the J37A2 Come in?
The J37A2 engine was originally introduced in the 2009-2012 Acura RL luxury sedan. This engine provided the RL with outstanding performance and efficiency, delivering 300 horsepower (224 kW) and 271 lb-ft (367 Nm) of torque.
The J37A2 engine was known for its smooth and refined performance, and its advanced technologies, such as VTEC and PGM-FI, helped to optimize engine performance and efficiency.
The J37A2 engine remains a popular choice for high-performance vehicles, and it continues to be a standout in Honda’s engine lineup.
Other J Series Engines-
| J37A5 | J37A4 | J37A1 | J35Z8 | J35Z6 |
| J35Z3 | J35Z2 | J35Z1 | J35Y6 | J35Y4 |
| J35Y2 | J35Y1 | J35A9 | J35A8 | J35A7 |
| J35A6 | J35A5 | J35A4 | J35A3 | J32A3 |
| J32A2 | J32A1 | J30AC | J30A5 | J30A4 |
| J30A3 | J30A1 | J35S1 |
