The Honda J30AC engine is a 3.0-liter, 24-valve, DOHC engine developed by the Japanese automaker, Honda. This engine is known for its smooth and efficient performance, making it a popular choice among car enthusiasts.
In this article, we will provide a brief history of the Honda J30AC engine, as well as an overview of its key specifications and performance.
From its design and build to its applications, this article will provide all the information you need to know about the Honda J30AC engine.
Honda J30AC Engine Overview
The Honda J30AC engine is a 3.0-liter, 24-valve, DOHC engine developed by the Japanese automaker, Honda. It is designed for luxury vehicles, and it is known for its smooth and efficient performance.
The engine was first introduced in the 2021 Acura TLX Type-S and 2022 Acura MDX Type-S.
The J30AC engine has a displacement of 3.0 liters, which translates to 182.9 cubic inches. The bore and stroke measure 86mm x 86mm, giving the engine a balanced and responsive feel.
The engine has a compression ratio of 9.8:1, which allows it to produce a high amount of power from each combustion cycle.
The J30AC engine is equipped with a 24-valve DOHC valve train, which is further enhanced by the inclusion of Honda’s VTC (Variable Timing Control) technology.
This advanced valve train design provides improved engine efficiency and a high power output, making the J30AC engine a popular choice for luxury performance vehicles.
In terms of power and torque, the J30AC engine is rated at 355 horsepower at 5,500 RPM and 354 lb-ft of torque at 1,400 RPM. This provides the engine with a strong,
responsive feel, and it gives the vehicles that it powers a significant boost in performance.
Overall, the Honda J30AC engine is a well-designed and well-built engine that provides car enthusiasts with a smooth, efficient, and powerful driving experience.
Its inclusion in luxury vehicles like the Acura TLX Type-S and MDX Type-S only adds to its reputation as a high-performance engine.
Specification Table for J30AC Engine
| Specification | Value |
|---|---|
| Engine Type | 3.0-liter, 24-valve, DOHC |
| Displacement | 3.0 liters (182.9 cubic inches) |
| Bore and Stroke | 86mm x 86mm |
| Compression Ratio | 9.8:1 |
| Valve Train | DOHC with VTC |
| Power Output | 355 horsepower at 5,500 RPM |
| Torque Output | 354 lb-ft of torque at 1,400 RPM |
| Applications | 2021+ Acura TLX Type-S, 2022+ Acura MDX Type-S |
Source: Wikipedia
Comparison With Other J30A Family Engine Like J30A1 and J30A3
The Honda J30AC engine is part of the J30A engine family, which includes other engines such as the J30A1 and J30A3. Here is a comparison between the J30AC and the other J30A engines:
| Specification | J30AC | J30A1 | J30A3 |
|---|---|---|---|
| Engine Type | 3.0-liter, 24-valve, DOHC | 3.0-liter, 24-valve, DOHC | 3.0-liter, 24-valve, DOHC |
| Displacement | 3.0 liters (182.9 cubic inches) | 3.0 liters (182.9 cubic inches) | 3.0 liters (182.9 cubic inches) |
| Bore and Stroke | 86mm x 86mm | 86mm x 86mm | 86mm x 86mm |
| Compression Ratio | 9.8:1 | 11.0:1 | 11.0:1 |
| Valve Train | DOHC with VTC | DOHC with VTC | DOHC with VTEC |
| Power Output | 355 horsepower at 5,500 RPM | 270 horsepower at 6,000 RPM | 300 horsepower at 6,200 RPM |
| Torque Output | 354 lb-ft of torque at 1,400 RPM | 251 lb-ft of torque at 4,500 RPM | 260 lb-ft of torque at 4,800 RPM |
As seen from the comparison, the J30AC has a higher power output than the J30A1 and J30A3 engines, with a more efficient compression ratio.
The J30A3 features Honda’s VTEC (Variable Valve Timing and Lift Electronic Control) technology, which provides improved engine performance, although the J30AC’s VTC technology is also designed to improve engine efficiency.
The J30A family of engines is known for their smooth, efficient, and powerful performance, and the J30AC is no exception.
Head and Valvetrain Specs J30AC
Here are the head and valvetrain specifications for the Honda J30AC engine
| Specification | Value |
|---|---|
| Number of Valves | 24 |
| Valve Configuration | DOHC (Double Overhead Camshafts) |
| Valve Lifting System | VTC (Variable Timing Control) |
The J30AC engine features a DOHC (Double Overhead Camshaft) valve configuration, which allows for improved engine breathing and efficiency.
The DOHC design also provides a more even distribution of power and torque, making the engine more responsive and smooth.
Additionally, the engine is equipped with Honda’s VTC (Variable Timing Control) technology, which enhances engine performance by adjusting the valve timing based on driving conditions.
This advanced valvetrain design provides improved engine efficiency, high power output, and a smooth and responsive driving experience.
The Technologies Used in
The Honda J30AC engine uses several advanced technologies designed to enhance engine performance and efficiency
1. Variable Timing Control (Vtc)
The J30AC is equipped with Honda’s VTC technology, which adjusts the timing of the engine’s valves based on driving conditions. This helps to improve engine efficiency and power output.
2. Double Overhead Camshafts (Dohc)
The J30AC features a DOHC design, which provides improved engine breathing and efficiency. The DOHC configuration also results in a more even distribution of power and torque, making the engine more responsive and smooth.
3. Direct Injection
The J30AC uses a direct fuel injection system, which allows for precise control over the fuel delivery to the engine. This results in improved fuel efficiency and engine performance.
4. High-compression Ratio
The J30AC features a high compression ratio of 9.8:1, which helps to improve engine efficiency and power output.
These advanced technologies work together to provide the J30AC with a smooth, efficient, and powerful driving experience. Whether you’re driving in the city or on the highway, the J30AC delivers impressive performance and efficiency.
Performance Review
The Honda J30AC engine is a high-performance engine that delivers impressive power, efficiency, and smoothness.
Here is a performance review of the J30AC engine
1. Power Output
The J30AC produces 355 horsepower at 5,500 RPM and 354 lb-ft of torque at 1,400 RPM, making it one of the more powerful engines in its class.
The engine’s high power output makes it well-suited for high-performance vehicles like the 2021+ Acura TLX Type-S and 2022+ Acura MDX Type-S.
2. Smooth and Responsive Performance
The J30AC features a DOHC design and VTC technology, which work together to provide a smooth and responsive driving experience.
The engine’s high torque output and smooth power delivery make it well-suited for high-speed driving, while the VTC technology helps to improve engine efficiency and reduce emissions.
3. Efficient Engine Design
The J30AC features a high compression ratio, direct injection system, and VTC technology, all of which contribute to its efficient engine design.
The engine’s high compression ratio and direct fuel injection system help to improve engine efficiency, while the VTC technology adjusts the valve timing based on driving conditions, further enhancing engine efficiency.
4. Reliability
The Honda J30AC engine is known for its reliability, and the advanced technologies used in its design ensure that it will deliver consistent performance over time.
The engine is designed to be durable and long-lasting, and its smooth and efficient operation helps to reduce wear and tear on the engine components.
Overall, the Honda J30AC engine is a powerful, efficient, and reliable engine that provides drivers with a smooth and responsive driving experience.
Whether you’re looking for a high-performance engine for your vehicle or just need an efficient and reliable engine for your daily commute, the J30AC is an excellent choice.
What Car Did the J30AC Come in?
The Honda J30AC engine was introduced in the 2021 model year and was available in two Acura vehicles: the 2021+ Acura TLX Type-S and the 2022+ Acura MDX Type-S.
Other J Series Engines-
| J37A5 | J37A4 | J37A2 | J37A1 | J35Z8 |
| J35Z6 | J35Z3 | J35Z2 | J35Z1 | J35Y6 |
| J35Y4 | J35Y2 | J35Y1 | J35A9 | J35A8 |
| J35A7 | J35A6 | J35A5 | J35A4 | J35A3 |
| J32A3 | J32A2 | J32A1 | J30A5 | J30A4 |
| J30A3 | J30A1 | J35S1 |
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