Mitsubishi 420A Engine Specs
The Mitsubishi 420A engine is a four-cylinder, 2.0-liter engine that was produced by Mitsubishi Motors Corporation. This engine was primarily used in the Mitsubishi Eclipse and Eagle Talon sports cars during the 1990s. Let’s take a closer look at the specifications of this engine.
Engine Configuration
The Mitsubishi 420A engine features a dual overhead cam (DOHC) configuration with four valves per cylinder. It has a cast iron block and an aluminum cylinder head, which helps to reduce weight while maintaining durability. The engine is equipped with a multi-point fuel injection system, ensuring efficient fuel delivery to each cylinder.
Engine Oil Specs
Proper engine oil is crucial for the smooth operation and longevity of any engine, including the Mitsubishi 420A. It is recommended to use a high-quality synthetic or semi-synthetic engine oil with a viscosity of 5W-30. This viscosity rating ensures optimal lubrication in both cold and hot weather conditions.
Service Intervals
Regular maintenance is essential to keep the Mitsubishi 420A engine running smoothly. Here are some recommended service intervals to follow:
1. Oil Change: It is recommended to change the engine oil and oil filter every 3,000 to 5,000 miles or every six months, whichever comes first. Regular oil changes help to remove contaminants and maintain proper lubrication.
2. Spark Plug Replacement: The spark plugs should be replaced every 30,000 to 50,000 miles. This ensures proper ignition and fuel efficiency.
3. Air Filter Replacement: The air filter should be inspected regularly and replaced every 15,000 to 30,000 miles, depending on driving conditions. A clean air filter improves engine performance and fuel economy.
4. Timing Belt Replacement: The timing belt should be replaced every 60,000 to 100,000 miles, depending on the manufacturer’s recommendation. A worn-out timing belt can cause engine damage if it fails.
5. Coolant Flush: It is recommended to flush and replace the engine coolant every 60,000 miles or every five years. This helps to prevent overheating and corrosion within the cooling system.
Detailed Engine Specifications
To provide a comprehensive overview, here are the detailed specifications of the Mitsubishi 420A engine:
| Engine Type | Inline 4-cylinder |
|---|---|
| Displacement | 2.0 liters (1997 cc) |
| Bore x Stroke | 87.5 mm x 83.0 mm |
| Compression Ratio | 9.5:1 |
| Valvetrain | DOHC, 4 valves per cylinder |
| Fuel System | Multi-point fuel injection |
| Horsepower | 140-210 hp, depending on model and modifications |
| Torque | 130-190 lb-ft, depending on model and modifications |
| Redline | 7,000 RPM |
- The Mitsubishi 420A engine is known for its smooth power delivery and high-revving nature.
- It has been a popular choice among enthusiasts due to its potential for aftermarket modifications.
- The engine’s performance can vary depending on factors such as turbocharging, modifications, and tuning.
- Regular maintenance and following the recommended service intervals are crucial for the longevity and reliability of the Mitsubishi 420A engine.
In conclusion, the Mitsubishi 420A engine is a capable and reliable powerplant that has powered many sports cars of the 1990s. With proper maintenance and care, this engine can provide years of enjoyable performance.
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