The Honda J35A8 engine is a 3.5-liter, 24-valve SOHC VTEC engine that was first introduced in 2004.
Known for its high performance and efficiency, the J35A8 has been utilized in several popular Honda and Acura vehicles, including the 2004-2008 Honda Legend KB1, the 2005-2008 Acura RL, and the 2007-2008 Acura TL Type-S.
The engine boasts a displacement of 3.5 liters, with a bore and stroke of 89 mm x 93 mm. It produces 286 horsepower at 6200 RPM and 256 lb-ft of torque at 5000 RPM, with a compression ratio of 11.0:1.
The J35A8 has received recognition as a top performer, being listed on Ward’s 10 Best Engines list in 2005, 2008, and 2009.
In this article, we will dive deeper into the specs and performance of the Honda J35A8 engine, providing a comprehensive review of its capabilities and potential as a reliable and powerful choice for car enthusiasts and daily drivers alike.
Honda J35A8 Engine Overview
The Honda J35A8 engine is a 3.5-liter, 24-valve SOHC VTEC engine that was first introduced in 2004. It is a high-performance engine known for its efficiency and power, and has been utilized in several popular Honda and Acura vehicles.
The engine has a displacement of 3.5 liters and a bore and stroke of 89 mm x 93 mm, producing 286 horsepower at 6200 RPM and 256 lb-ft of torque at 5000 RPM.
This high output is made possible by a high compression ratio of 11.0:1, which allows for the efficient combustion of fuel. The J35A8 also features a 24-valve SOHC VTEC valve train, which enhances its power delivery and overall performance.
The J35A8 engine has received recognition as a top performer in the automotive industry, being listed on Ward’s 10 Best Engines list in 2005, 2008, and 2009.
The engine has received positive reviews and feedback from industry experts and car owners alike, who appreciate its power and acceleration, fuel efficiency, reliability, and smoothness.
The J35A8 engine has been utilized in several popular Honda and Acura vehicles, including the 2004-2008 Honda Legend KB1, the 2005-2008 Acura RL, and the 2007-2008 Acura TL Type-S.
These vehicles are known for their combination of luxury, comfort, and high performance, and the J35A8 engine plays a major role in providing this experience for drivers.
Overall, the Honda J35A8 engine is a versatile and powerful choice for car enthusiasts and daily drivers alike. With its combination of high output, efficiency, and reliability, the J35A8 is a standout performer in the automotive industry, and continues to be a popular choice for those looking for a high-quality engine for their vehicle.
Specification Table for J35A8 Engine
| Specification | J35A8 |
|---|---|
| Displacement | 3.5 L (211.8 cu in) |
| Bore and Stroke | 89 mm x 93 mm (3.50 in x 3.66 in) |
| Power | 286 hp (213 kW) at 6200 RPM |
| Torque | 256 lb-ft (347 N⋅m) at 5000 RPM |
| Compression | 11.0:1 |
| Valve Train | 24-Valve SOHC VTEC |
| Applications | 2004-2008 Honda Legend KB1, 2005-2008 Acura RL, 2007-2008 Acura TL Type-S |
| Awards | Ward’s 10 Best Engines 2005, 2008, 2009 |
Source: Wikipedia
Comparison With Other J35 Family Engine Like J35A3 and J35A4
The Honda J35A8 engine is part of the J35 engine family, which also includes the J35A3 and J35A4 engines. The following table compares the specifications of the J35A8 engine with the J35A3 and J35A4 engines.
| Specification | J35A8 | J35A3 | J35A4 |
|---|---|---|---|
| Displacement | 3.5 L (211.8 cu in) | 3.5 L (211.8 cu in) | 3.5 L (211.8 cu in) |
| Bore and Stroke | 89 mm x 93 mm (3.50 in x 3.66 in) | 89 mm x 93 mm (3.50 in x 3.66 in) | 89 mm x 93 mm (3.50 in x 3.66 in) |
| Power | 286 hp (213 kW) at 6200 RPM | 270 hp (201 kW) at 6200 RPM | 300 hp (224 kW) at 6300 RPM |
| Torque | 256 lb-ft (347 N⋅m) at 5000 RPM | 251 lb-ft (339 N⋅m) at 5000 RPM | 262 lb-ft (355 N⋅m) at 5000 RPM |
| Compression | 11.0:1 | 11.0:1 | 11.0:1 |
| Valve Train | 24-Valve SOHC VTEC | 24-Valve SOHC VTEC | 24-Valve DOHC VTEC |
| Applications | 2004-2008 Honda Legend KB1, 2005-2008 Acura RL, 2007-2008 Acura TL Type-S | 2003-2007 Honda Accord | 2005-2006 Acura RL |
| Awards | Ward’s 10 Best Engines 2005, 2008, 2009 | – | – |
As can be seen from the table, the J35A8 engine is similar in displacement and bore and stroke to the J35A3 and J35A4 engines, but it differs in terms of power and torque output, valve train, and applications.
The J35A8 produces higher horsepower and torque than the J35A3, and similar horsepower and torque to the J35A4, but with a simpler SOHC valve train.
The J35A8 is used in luxury vehicles such as the Honda Legend KB1 and Acura RL and TL Type-S, while the J35A3 is used in the Honda Accord and the J35A4 in the Acura RL.
All three engines are known for their high performance and reliability, but the J35A8 stands out as a top performer, being listed on Ward’s 10 Best Engines list in 2005, 2008, and 2009.
Head and Valvetrain Specs J35A8
The Honda J35A8 engine is equipped with a 24-valve SOHC VTEC (Variable Valve Timing and Lift Electronic Control) valve train. The SOHC (Single Overhead Camshaft) configuration places the camshaft in the cylinder head, actuating the valves directly.
The VTEC system uses hydraulic oil pressure to adjust the valve lift, duration, and timing, depending on engine speed and load, for improved efficiency and performance. The J35A8’s 24 valves provide excellent breathing for high power output and engine speed.
The head and valvetrain specifications for the J35A8 engine include
- 24 valves
- SOHC VTEC
- Valve diameter: INTAKE – 31.5 mm (1.24 in), EXHAUST – 27.2 mm (1.07 in)
- Valve lift (INTAKE/EXHAUST): VTEC ON – 9.2 mm (0.36 in) / 8.5 mm (0.33 in), VTEC OFF – 6.6 mm (0.26 in) / 6.3 mm (0.25 in)
- Valve duration (INTAKE/EXHAUST): VTEC ON – 264 degrees / 256 degrees, VTEC OFF – 220 degrees / 220 degrees
Overall, the head and valvetrain of the J35A8 engine provides excellent performance and efficiency, enabling high power output and engine speed.
The Technologies Used in
The Honda J35A8 engine is equipped with several advanced technologies designed to improve performance and efficiency. Some of the key technologies used in the J35A8 engine include:
1. Vtec (Variable Valve Timing and Lift Electronic Control)
This system uses hydraulic oil pressure to adjust the valve lift, duration, and timing, depending on engine speed and load, for improved efficiency and performance.
2. Sohc (Single Overhead Camshaft)
The SOHC configuration places the camshaft in the cylinder head, actuating the valves directly, which helps to improve engine breathing and increase power output.
3. High-flow Intake System
The J35A8 engine features a high-flow intake system that enhances air flow into the engine, improving engine breathing and overall performance.
4. High-compression Ratio
The J35A8 engine features a compression ratio of 11.0:1, which helps to increase engine efficiency and power output.
5. Aluminum Engine Block
The J35A8 engine features an aluminum engine block, which helps to reduce engine weight and improve performance and efficiency.
Overall, the technologies used in the Honda J35A8 engine work together to deliver excellent performance and efficiency, making it a top performer in its class.
Performance Review
The Honda J35A8 engine delivers excellent performance and efficiency, making it one of the top engines in its class. With a displacement of 3.5 liters, the J35A8 engine produces 286 horsepower at 6200 rpm and 256 lb-ft of torque at 5000 rpm.
This high power output, combined with the engine’s lightweight aluminum block, enables quick acceleration and smooth, responsive power delivery.
The VTEC system in the J35A8 engine adjusts valve lift, duration, and timing, depending on engine speed and load, which helps to improve engine efficiency and performance.
The SOHC configuration and high-flow intake system also contribute to the engine’s efficient breathing, which helps to improve performance.
In terms of fuel efficiency, the J35A8 engine provides excellent fuel economy for a naturally aspirated engine of its size and power output.
The high-compression ratio and advanced technologies help to reduce fuel consumption, making it an economical choice for a high-performance engine.
On the Ward’s 10 Best Engines list for 2005, 2008, and 2009, the Honda J35A8 engine is recognized for its excellent performance and efficiency.
The engine has received praise for its smooth power delivery, quick acceleration, and overall refinement, making it a top choice for drivers looking for a high-performance engine.
Overall, the Honda J35A8 engine is a top performer in its class, delivering excellent power output, fuel efficiency, and refinement.
Whether you’re looking for a high-performance engine for your Acura RL, Acura TL Type-S, or Honda Legend KB1, the J35A8 engine is a top choice.
What Car Did the J35A8 Come in?
The Honda J35A8 engine was used in several car models, including
- 2004-2008 Honda Legend KB1
- 2005-2008 Acura RL
- 2007-2008 Acura TL Type-S
This versatile engine was highly regarded for its excellent performance and efficiency, and it was used in a range of high-performance vehicles. If you’re looking for a high-performance engine for your Honda or Acura, the J35A8 engine is a top choice.
Other J Series Engines-
| J37A5 | J37A4 | J37A2 | J37A1 | J35Z8 |
| J35Z6 | J35Z3 | J35Z2 | J35Z1 | J35Y6 |
| J35Y4 | J35Y2 | J35Y1 | J35A9 | J35A7 |
| J35A6 | J35A5 | J35A4 | J35A3 | J32A3 |
| J32A2 | J32A1 | J30AC | J30A5 | J30A4 |
| J30A3 | J30A1 | J35S1 |
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