4936081
Cylinder Head
Cummins®

The Cummins 4936081 Cylinder Head is a significant component in heavy-duty truck engines, contributing to the overall performance and efficiency of the engine. This part is designed to meet the demanding requirements of commercial trucking, ensuring reliable operation under various conditions.

Basic Concepts of a Cylinder Head

A cylinder head is a part of an internal combustion engine, sealing the cylinders and allowing the entry and exit of air and fuel mixture, as well as exhaust gases. It houses the valves, spark plugs (in gasoline engines), and fuel injectors (in diesel engines), and plays a role in the combustion process by providing a sealed environment for the combustion of fuel. The cylinder head interacts closely with the engine block, pistons, and other components to facilitate efficient engine operation ¹.

Purpose of the Cummins 4936081 Cylinder Head

This Cummins part is specifically engineered to enhance the operation of truck engines. It contributes to combustion efficiency by ensuring precise valve timing and optimal airflow. This part plays a role in increasing engine power output and improving overall engine performance. Its design allows for effective heat dissipation, which helps in maintaining engine temperature within safe limits ².

Key Features

The Cummins 4936081 Cylinder Head is constructed using high-quality materials and advanced manufacturing processes to ensure durability and performance. It features a robust design that includes precision-machined valve seats and guides, as well as integrated fuel injector bosses. The use of advanced materials enhances its resistance to wear and thermal stress, contributing to its longevity and reliability ³.

Benefits

The Cummins 4936081 Cylinder Head offers several advantages, including improved fuel efficiency due to its efficient combustion chamber design. It also enhances engine performance by allowing for better airflow and combustion, resulting in increased power output. Additionally, its durable construction contributes to the overall reliability of the engine, reducing the likelihood of failures and extending maintenance intervals.

Installation and Compatibility

Proper installation of the Cummins 4936081 Cylinder Head requires careful preparation and the use of appropriate tools. It is important to follow manufacturer guidelines to ensure a successful installation. This cylinder head is designed to be compatible with specific engine models and truck makes, ensuring a precise fit and optimal performance.

Maintenance and Troubleshooting

Routine maintenance of the Cummins 4936081 Cylinder Head is important to ensure its optimal performance and longevity. This includes regular inspections for wear and damage, cleaning to remove deposits, and ensuring proper lubrication of moving parts. Common issues such as valve leakage or combustion chamber deposits can be addressed through timely maintenance and troubleshooting procedures.

Performance Enhancements

Aftermarket modifications and upgrades are available for the Cummins 4936081 Cylinder Head to further enhance engine performance. These may include porting and polishing to improve airflow, valve upgrades for higher performance, and other modifications that can increase horsepower, torque, and overall efficiency. These enhancements should be performed by qualified professionals to ensure compatibility and safety.

Cummins Corporation

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation in the automotive and heavy-duty truck industries, Cummins is known for its commitment to innovation, quality, and customer satisfaction. The company’s extensive product offerings and global presence have a significant impact on the transportation sector, providing reliable and efficient power solutions for a wide range of applications.

Cummins Cylinder Head Part 4936081 Compatibility

The Cummins Cylinder Head part number 4936081 is designed to fit a variety of Cummins engines, ensuring compatibility across multiple models. Here is a detailed look at the engines that this cylinder head can be used with:

B6.7 Series Engines

• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C

These engines are part of the B6.7 series, which is known for its robust performance and reliability. The cylinder head part 4936081 is engineered to match the specifications of these engines, ensuring optimal performance and longevity.

ISB Series Engines

• ISB CM2150
• ISB CM850
• ISB/ISD6.7 CM2150 SN
• ISB6.7 CM2250

The ISB series engines are widely used in various applications due to their efficiency and power. The cylinder head part 4936081 is compatible with these engines, providing a reliable replacement or upgrade option.

ISBE Series Engines

• ISBE CM2150
• ISBE4 CM850

The ISBE series engines are designed for heavy-duty applications, and the cylinder head part 4936081 is engineered to meet the demands of these high-performance engines.

QSB Series Engines

• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

The QSB series engines are known for their versatility and durability. The cylinder head part 4936081 is compatible with these engines, ensuring that they continue to operate efficiently and reliably.

By understanding the compatibility of the Cummins Cylinder Head part 4936081 with these various engines, users can ensure that they are selecting the right part for their specific engine model.

Role of Part 4936081 Cylinder Head in Engine Systems

The part 4936081 Cylinder Head is an integral component in the orchestration of an engine’s operation, interacting with several key elements to ensure efficient and effective performance.

Interaction with the Camshaft

The camshaft operates in tandem with the cylinder head, controlling the timing of the valve operation. As the camshaft rotates, it actuates the valves through various mechanisms such as lifters, pushrods, or direct actuation in overhead cam engines. The cylinder head houses these valves, providing a sealed environment for the combustion process.

Relationship with Connecting Rod and Piston

The combustion process initiated within the cylinder head propels the piston downward, a motion transferred through the connecting rod to the crankshaft. This conversion of linear motion to rotational motion is fundamental to the engine’s operation, with the cylinder head playing a pivotal role in initiating this sequence.

Integration with Injector and Injector Plumbing

In fuel-injected engines, the injector delivers a precise amount of fuel into the combustion chamber within the cylinder head. The injector plumbing, which includes fuel lines and rails, ensures a consistent supply of fuel to the injectors. The cylinder head must be designed to accommodate these components, ensuring a sealed and efficient combustion environment.

Component of Long Block Kit

A long block kit typically includes the cylinder head as a key component. This kit generally consists of the engine block, crankshaft, pistons, connecting rods, and the cylinder head. The cylinder head completes the long block, allowing for the installation of additional components such as the camshaft, valve train, and fuel system.

Enhancement with Performance Parts

When upgrading an engine with performance parts, the cylinder head often undergoes modifications or replacement to accommodate increased airflow, higher compression ratios, and enhanced combustion efficiency. Performance parts may include ported cylinder heads, upgraded valve springs, and high-performance camshafts, all of which interact with the cylinder head to extract more power and efficiency from the engine.

Conclusion

The Cummins 4936081 Cylinder Head is a critical component in heavy-duty truck engines, designed to enhance performance, efficiency, and reliability. Its robust construction, precise engineering, and compatibility with various Cummins engines make it a valuable part for both original equipment and aftermarket upgrades. Proper installation, maintenance, and understanding of its role within the engine system are essential for maximizing its benefits and ensuring long-term engine health.