1997 Jeep 4.0 Engine Specifications
The 1997 Jeep 4.0 engine is a well-regarded powerplant known for its durability and performance. This inline-six engine has been a favorite among Jeep enthusiasts for its robust design and capability. Below are the detailed specifications of the 4.0 engine.
| Specification | Details |
|---|---|
| Engine Type | Inline 6-cylinder |
| Displacement | 4.0 liters (242 cubic inches) |
| Horsepower | 190 hp @ 4,600 rpm |
| Torque | 235 lb-ft @ 3,200 rpm |
| Compression Ratio | 8.8:1 |
| Fuel System | Sequential multi-port fuel injection |
| Ignition System | Distributor-less ignition system (DIS) |
| Valvetrain | SOHC, 12 valves |
| Fuel Type | Regular unleaded gasoline |
| Maximum RPM | 5,200 rpm |
Engine Configuration
The 1997 Jeep 4.0 engine features a classic inline-six configuration that has been a staple in Jeep vehicles for many years. This design offers several advantages, including:
- Balance: The inline-six configuration provides inherent balance, reducing vibrations and enhancing smoothness.
- Torque Delivery: The engine produces ample low-end torque, making it ideal for off-road and towing applications.
- Durability: The robust construction of the 4.0 engine contributes to its reputation for longevity and reliability.
The engine is equipped with a single overhead camshaft (SOHC) and features a 12-valve design, allowing for efficient airflow and combustion. The sequential multi-port fuel injection system ensures optimal fuel delivery, enhancing performance and fuel efficiency.
Engine Oil Specifications
Proper engine oil selection and maintenance are crucial for the longevity and performance of the 1997 Jeep 4.0 engine. Below are the recommended oil specifications:
| Specification | Details |
|---|---|
| Oil Type | Synthetic or conventional motor oil |
| Viscosity | SAE 5W-30 |
| Oil Capacity (with filter) | 6 quarts |
| Oil Filter | Chrysler part number 53010460AA or equivalent |
Service Intervals
Regular maintenance is essential to keep the 1997 Jeep 4.0 engine running smoothly. Below are the recommended service intervals for oil changes and other essential maintenance tasks:
- Oil Change: Every 3,000 to 5,000 miles or every 3 to 6 months, whichever comes first.
- Oil Filter Replacement: Replace with every oil change.
- Coolant Flush: Every 30,000 miles or as needed.
- Air Filter Replacement: Every 15,000 to 30,000 miles, depending on driving conditions.
- Spark Plug Replacement: Every 30,000 miles.
- Transmission Fluid Change: Every 30,000 to 60,000 miles.
Conclusion
The 1997 Jeep 4.0 engine is a testament to Jeep’s commitment to performance and reliability. With its solid specifications, balanced engine configuration, and straightforward maintenance requirements, it remains a popular choice for off-road enthusiasts and daily drivers alike. Adhering to the recommended oil specifications and service intervals will ensure that this engine continues to perform at its best for years to come.
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