Toyota 4B Engine Specs
The Toyota 4B engine is a four-cylinder diesel engine that was first introduced in 1989. It is part of Toyota’s B engine family, which also includes the 3B and 5B engines. The 4B engine is known for its reliability, durability, and fuel efficiency, making it a popular choice for various applications, including commercial vehicles and off-road vehicles.
Engine Configuration
The Toyota 4B engine features a cast-iron cylinder block and cylinder head, providing excellent strength and heat dissipation. It has a displacement of 3.7 liters (3,668 cc) and a bore and stroke of 94 mm x 100 mm. The engine has an overhead valve (OHV) design with two valves per cylinder, operated by a pushrod and rocker arm mechanism.
The 4B engine is equipped with a direct injection fuel system, which improves fuel atomization and combustion efficiency. It also has a turbocharger, which enhances power output and torque, especially at low engine speeds. The engine is designed to meet various emission standards, including Euro II and Euro III.
Engine Oil Specs & Service Intervals
Using the right engine oil and following the recommended service intervals are crucial for maintaining the performance and longevity of the Toyota 4B engine. Here are the engine oil specifications and service intervals for the 4B engine:
- Engine Oil Capacity: 7.5 liters (including oil filter)
- Recommended Engine Oil: API CF-4 or higher
- Viscosity Grade: SAE 15W-40
- Oil Change Interval: Every 10,000 kilometers or 6 months (whichever comes first)
It is important to note that these specifications may vary depending on the specific model and year of the vehicle. Therefore, it is always advisable to refer to the owner’s manual or consult with a certified Toyota service center for the most accurate and up-to-date information.
Detailed Engine Specifications
| Engine Type | Toyota 4B |
|---|---|
| Displacement | 3.7 liters (3,668 cc) |
| Configuration | Inline 4-cylinder |
| Bore x Stroke | 94 mm x 100 mm |
| Valvetrain | Overhead Valve (OHV) |
| Fuel System | Direct Injection |
| Turbocharger | Yes |
| Maximum Power | 90 horsepower at 3,500 rpm |
| Maximum Torque | 209 lb-ft at 2,000 rpm |
| Emission Standards | Euro II and Euro III |
These specifications provide a general overview of the Toyota 4B engine. However, it is important to note that specific models and applications may have variations in power output, torque, and other parameters. Therefore, it is always recommended to refer to the vehicle’s documentation or consult with a Toyota expert for precise information.
The Toyota 4B engine has proven to be a reliable and efficient powerplant, offering excellent performance and durability. Whether used in commercial vehicles or off-road applications, the 4B engine continues to be a popular choice among Toyota enthusiasts and professionals alike.
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