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+26 3.8 3800 Series 2 Engine Diagram

3.8 3800 series 2 engine diagram 3800 v6 engine diagram diagram Free Learn Diagram
3.8 3800 series 2 engine diagram 3800 v6 engine diagram diagram Free Learn Diagram from


The 3.8 3800 Series 2 engine is a powerful and reliable engine that has been used in a wide range of vehicles. It is known for its durability, smooth performance, and impressive power output. In this article, we will explore the various components and features of the 3.8 3800 Series 2 engine, providing you with a detailed diagram to help you understand its inner workings.

Engine Block

The engine block is the foundation of the 3.8 3800 Series 2 engine. It is made of cast iron and houses all the major components of the engine. The block consists of multiple cylinders, each containing a piston which moves up and down during the combustion process. The engine block also has several passages and channels that allow coolant and oil to flow throughout the engine.


The cylinders are where the combustion process takes place in the engine. The 3.8 3800 Series 2 engine has six cylinders arranged in a V-6 configuration. The cylinders are numbered from 1 to 6, with cylinder number 1 being the closest to the front of the engine. Each cylinder has a piston, which is connected to the crankshaft via a connecting rod. The pistons move up and down in a synchronized manner, creating the necessary power to drive the vehicle.


The crankshaft is a crucial component of the engine that converts the up-and-down motion of the pistons into rotational motion. It is connected to the pistons via connecting rods and rotates within the engine block. The crankshaft has several bearings that allow it to rotate smoothly and reduce friction. It also has counterweights that help balance the engine and reduce vibrations.


The valvetrain of the 3.8 3800 Series 2 engine controls the intake and exhaust valves, allowing air and fuel to enter the cylinders and exhaust gases to exit. It consists of several components, including the camshaft, lifters, pushrods, and rocker arms.


The camshaft is a cylindrical shaft that is driven by the crankshaft via a timing belt or chain. It has lobes or cams that open and close the valves at the right time during the engine's operation. The camshaft is located within the engine block and operates the intake and exhaust valves through the lifters, pushrods, and rocker arms.


The lifters, also known as tappets, are small cylindrical components that are located between the camshaft and the pushrods. They are responsible for transferring the motion from the camshaft to the pushrods, which in turn open and close the valves. The lifters ensure precise valve timing and play a crucial role in the engine's performance.


The pushrods are long, slender metal rods that transmit the motion from the lifters to the rocker arms. They are located above the lifters and run parallel to the engine block. The pushrods are responsible for actuating the rocker arms, which then open and close the valves. Proper pushrod length and design are essential for maintaining optimal valve performance.

Rocker Arms

The rocker arms are pivoting levers that are actuated by the pushrods. They are located above the cylinder head and operate the intake and exhaust valves. The rocker arms convert the linear motion from the pushrods into a rotating motion that opens and closes the valves. They play a vital role in the engine's valve timing and ensure smooth operation.

Intake and Exhaust Systems

The intake and exhaust systems of the 3.8 3800 Series 2 engine are responsible for bringing air and fuel into the cylinders and expelling exhaust gases. These systems consist of various components that work together to optimize engine performance.

Intake Manifold

The intake manifold is a large, cast aluminum or plastic component that distributes air and fuel to the individual cylinders. It is connected to the throttle body, which regulates the amount of air entering the engine. The intake manifold ensures an even distribution of air and fuel for efficient combustion in each cylinder.

Throttle Body

The throttle body is a valve that controls the amount of air entering the engine. It is connected to the intake manifold and is operated by the accelerator pedal. When the accelerator pedal is pressed, the throttle body opens, allowing more air to enter the engine, resulting in increased power output.

Exhaust Manifold

The exhaust manifold collects the exhaust gases from the cylinders and directs them into the exhaust system. It is usually made of cast iron and is bolted to the cylinder head. The exhaust manifold ensures efficient removal of exhaust gases from the engine and helps reduce backpressure.

Catalytic Converter

The catalytic converter is an emissions control device that reduces harmful pollutants in the exhaust gases. It contains catalysts that promote chemical reactions to convert carbon monoxide, nitrogen oxides, and unburned hydrocarbons into less harmful substances. The catalytic converter plays a crucial role in reducing vehicle emissions and meeting environmental regulations.


The 3.8 3800 Series 2 engine is a reliable and powerful engine that has been used in various vehicles. Its well-designed components, such as the engine block, valvetrain, and intake/exhaust systems, contribute to its performance and durability. Understanding the engine's inner workings, as depicted in the diagram, can help enthusiasts and mechanics better appreciate its design and troubleshoot any issues that may arise. Whether it's powering a sedan, SUV, or sports car, the 3.8 3800 Series 2 engine continues to impress with its performance and longevity.

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