4BT Cummins Engine: Comprehensive Analysis of Specifications, Weight and Power Performance
Cummins, a globally renowned diesel engine manufacturer, is famous for its products, which are characterized by high reliability, durability and stability. Among the numerous series, the 4BT series is highly favored for its compact structure, easy maintenance and excellent modification potential. Whether in light trucks, off-road modifications, construction machinery, or in generator sets and Marine power systems, 4BT has demonstrated extremely strong applicability and extensive application value.
This article will provide readers with a comprehensive analysis of the 4BT Cummins engine, focusing on its technical specifications, weight information, as well as power and torque performance. It will also conduct analyses in combination with different application scenarios to help users make wiser decisions during the purchasing or modification process.
4BT Cummins Basic Specifications
The 4BT is a classic inline four-cylinder diesel engine in the Cummins family, with a displacement of 3.9 liters. Its core technical parameters are as follows:
- Number of cylinders: 4
- Displacement: 3.9 liters (239 cubic inches)
- Cylinder bore × stroke: 102mm × 120mm
- Compression ratio: 17.2:1
- Fuel system: Mechanical direct injection pump (Some models are electronically controlled for fuel injection)
- Turbocharging type: Naturally aspirated or turbocharged
The 4BT engine not only performs stably in power output, but also features excellent durability and reliability. There are differences in power and torque among different versions, among which the performance of the turbocharged version is particularly outstanding.
In addition to technical parameters, the 4BT engine also has a very wide range of applications. It can be installed in light trucks, pickup trucks, construction machinery, generator sets and Marine power systems, meeting various industrial and civil demands. For modification enthusiasts, its compact structure and reliable performance make it an ideal choice.
What Is The Weight Of 4BT Cummins?
The weight of the engine is an important reference index when purchasing or modifying. The weight of 4BT varies slightly depending on the configuration:
- Net weight (engine body, excluding accessories) :Â approximately 330-360 kilograms
- The overall weight of the machine (including the generator, cooling system and accessories) :Â approximately 400 to 450 kilograms
Compared with Cummins 6BT or ISB series, the 4BT is lighter in weight, which means it is easier to install in modified vehicles or light machinery and imposes a lower load on the chassis and suspension system. A reasonable weight design not only facilitates installation but also ensures the stability and durability of the engine during operation.
In addition, the moderate weight of 4BT is also conducive to transportation and maintenance. For applications in construction machinery and generators, lightweight design reduces the requirements for support structures, lowers the overall system cost, and ensures that the engine maintains good performance even after long-term operation.
How Does The Power And Torque Performance Of 4BT Cummins Perform?
The 4BT engine offers a balanced performance in terms of power and torque, meeting the demands of various applications. Typical parameters are as follows:
- Naturally aspirated version: approximately 105-115 horsepower (HP), torque about 350-380 N·m
- Turbocharged version: approximately 120-140 horsepower (HP), torque about 430-500 N·m
This engine can output stable torque at low speeds, which is particularly important for scenarios such as heavy-load starts, slow driving, and towing loads. The turbocharged version provides additional power at high RPMS, enabling the vehicle or equipment to perform more calmly when dealing with complex working conditions.
For modification enthusiasts or professional users, the horsepower and torque of the 4BT can be further enhanced by upgrading the turbo, optimizing the intake and exhaust systems or adjusting the fuel supply, thereby meeting higher performance demands. This also explains why the 4BT is so popular in off-road modifications and light mechanical power replacements.
Compared with diesel engines of the same level, 4BT combines reliability, durability and fuel economy, and has stable performance in applications such as light machinery, commercial vehicles and generator sets.
Performance Of 4BT Cummins In Different Applications
Commercial vehicles
In light trucks and pickup trucks, the 4BT engine has become the first choice for many enterprises and individual users due to its stable power output and low fuel consumption advantages. Its maintenance cost is relatively low, and the spare parts are easy to obtain, ensuring the economic efficiency of the vehicle’s long-term operation.
Modified vehicle
Due to its compact size and moderate weight, 4BT is widely used in the modification of off-road vehicles, old Jeeps and light trucks. Its low-speed torque is sufficient, capable of handling complex terrains and heavy load requirements. For modification users who pursue power and reliability, the 4BT offers ample modification space and tuning potential.
Industrial and generator applications
In generator sets, pumping stations and various industrial equipment, the durability and low-speed torque advantages of 4BT are particularly prominent. It can operate stably for a long time, and at the same time, it has low requirements for fuel consumption and maintenance, meeting the high reliability demands of power systems in industrial environments.
Ship power system
The 4BT engine also performs well in small ships and tugboats. Its low-speed torque advantage ensures smooth navigation and strong propulsion, while the lightweight design facilitates hull layout and installation.
Final Words and Suggestions
To sum up, the 4BT Cummins engine is a diesel power source with stable performance, compact structure, easy maintenance and good fuel economy. It is applicable to various scenarios such as light vehicles, modification projects, industrial equipment and generator sets.
When making a purchase, it is recommended to pay attention to the following points:
- Choose the naturally aspirated or turbocharged version according to the specific use
- Ensure that the engine is from a legitimate source and guarantee its quality and after-sales service
- The modification application needs to be matched with a suitable transmission, cooling system and exhaust system to achieve the best performance
- Regular maintenance and correct usage will further extend the engine’s lifespan
Whether for commercial, retrofit or industrial applications, 4BT Cummins engines can provide reliable power and economic performance, making them a trustworthy choice for users.
Longshine is committed to providing users with high-quality 4BT engines and related services, helping customers achieve stable and efficient power output in various application scenarios. Choosing Longshine means choosing reliable and professional protection.