Toyota 1NZ-FE Engine Specs
The Toyota 1NZ-FE engine is a compact, inline-four engine that was introduced in 1999. It has been widely used in various Toyota models, including the Corolla, Yaris, and Prius. This article will provide an overview of the engine’s specifications, including its configuration, oil specifications, and service intervals.
Engine Configuration
The Toyota 1NZ-FE engine features a 1.5-liter displacement and a DOHC (Dual Overhead Camshaft) design. It has 16 valves, with four valves per cylinder, and utilizes Toyota’s VVT-i (Variable Valve Timing with intelligence) system. This system helps optimize performance and fuel efficiency by adjusting the timing of the intake and exhaust valves.
The engine is equipped with an electronic fuel injection system, ensuring precise fuel delivery and efficient combustion. It also incorporates Toyota’s ETCS-i (Electronic Throttle Control System-intelligent) for improved throttle response and control.
Engine Oil Specs & Service Intervals
Proper engine oil is essential for maintaining the performance and longevity of the Toyota 1NZ-FE engine. Here are the recommended engine oil specifications and service intervals:
- Engine Oil Type: It is recommended to use a high-quality synthetic or mineral-based engine oil with a viscosity grade of SAE 5W-30 or 10W-30. Always refer to the owner’s manual for the specific oil type recommended for your vehicle.
- Oil Capacity: The engine oil capacity for the 1NZ-FE engine is approximately 3.7 liters (3.9 quarts) including the oil filter.
- Oil Change Interval: Toyota recommends changing the engine oil and oil filter every 5,000 miles or 6 months, whichever comes first. However, it is important to note that driving conditions and habits may require more frequent oil changes.
Regular oil changes are crucial to ensure proper lubrication of engine components and to prevent excessive wear and tear. It is also recommended to use genuine Toyota oil filters for optimal filtration and protection.
Detailed Engine Specifications
Here are the detailed specifications of the Toyota 1NZ-FE engine:
| Engine Type | Inline-four, gasoline |
|---|---|
| Displacement | 1.5 liters (1497 cc) |
| Valve Mechanism | DOHC, 16 valves |
| Bore x Stroke | 75.0 mm x 84.7 mm |
| Compression Ratio | 10.5:1 |
| Max Power Output | 106 horsepower @ 6,000 rpm |
| Max Torque | 103 lb-ft @ 4,200 rpm |
| Fuel System | Electronic Fuel Injection (EFI) |
| Fuel Type | Regular unleaded gasoline (RON 87) |
The Toyota 1NZ-FE engine is known for its reliability, fuel efficiency, and smooth performance. With regular maintenance and proper care, it can provide years of trouble-free operation.
In conclusion, the Toyota 1NZ-FE engine is a compact and efficient powerplant that has found its way into numerous Toyota models. By following the recommended oil specifications and service intervals, owners can ensure the engine’s longevity and optimal performance. Remember to consult the owner’s manual for specific maintenance guidelines tailored to your vehicle.
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