Subaru H6 Engine Specs
The Subaru H6 engine, also known as the Subaru EZ series, is a horizontally opposed six-cylinder engine that has garnered attention for its unique design and performance characteristics. This engine is primarily used in various Subaru models, providing a balance of power and efficiency. Below are the detailed specifications of the Subaru H6 engine.
| Specification | Details |
|---|---|
| Engine Type | Horizontally Opposed (Flat 6) |
| Displacement | 3.0L (EJ30) / 3.6L (EZ36) |
| Configuration | 6-Cylinder |
| Fuel System | Multi-Point Fuel Injection |
| Max Horsepower | 250 hp @ 6,000 rpm (EZ36) |
| Max Torque | 247 lb-ft @ 4,400 rpm (EZ36) |
| Compression Ratio | 10.5:1 |
| Fuel Type | Premium Unleaded |
| Valvetrain | DOHC with VVT |
| Weight | Approximately 350 lbs |
Engine Configuration
The Subaru H6 engine features a unique horizontally opposed configuration, which is a hallmark of Subaru’s engineering philosophy. This design offers several advantages:
- Lower Center of Gravity: The flat design allows for a lower center of gravity, improving vehicle stability and handling.
- Reduced Vibration: The opposing cylinders help to balance out engine vibrations, leading to a smoother operation.
- Compact Size: The engine’s layout allows for a more compact engine bay, providing more room for other components.
The H6 engine is available in two main variants: the 3.0L EJ30 and the 3.6L EZ36. The EJ30 was primarily used in older Subaru models, while the EZ36 is more common in newer vehicles.
Key Features of the H6 Engine
– Dual Overhead Camshafts (DOHC): This design allows for better airflow and improved performance at higher RPMs.
– Variable Valve Timing (VVT): Enhances engine efficiency and power delivery across various RPM ranges.
– Multi-Point Fuel Injection: Provides precise fuel delivery for optimal combustion and efficiency.
Engine Oil Specs & Service Intervals
Proper maintenance of the Subaru H6 engine is crucial for longevity and performance. This includes regular oil changes and using the correct type of engine oil.
Engine Oil Specifications
| Specification | Details |
|---|---|
| Oil Type | SAE 5W-30 or 0W-20 (depending on climate) |
| Oil Capacity | 6.9 quarts (with filter) |
| Oil Filter | Subaru OEM or equivalent |
| Oil Change Interval | 6,000 miles or 6 months (whichever comes first) |
Service Intervals
Regular service intervals help maintain the performance and reliability of the H6 engine. Below are recommended service intervals:
- Oil Change: Every 6,000 miles or 6 months.
- Air Filter Replacement: Every 15,000 miles.
- Fuel Filter Replacement: Every 30,000 miles.
- Spark Plug Replacement: Every 60,000 miles.
- Coolant Flush: Every 30,000 miles.
Conclusion
The Subaru H6 engine is a remarkable piece of engineering that combines power, efficiency, and smooth operation. Its unique horizontally opposed configuration offers several advantages, making it a popular choice among Subaru enthusiasts. By adhering to the recommended oil specifications and service intervals, owners can ensure their H6 engine remains in optimal condition for years to come. Regular maintenance not only enhances performance but also extends the lifespan of the engine, ensuring a reliable driving experience.
0 Comments