A Guide On Engine Rebuilding

Engine rebuilding is a suitable option for people that would want to restore their car engines to a near-new state. It is also common among car enthusiasts that need to improve the performance of their vehicles. So, what does it take to rebuild a vehicle's engine? Below is a step by step guide.

Diagnosis

The mechanic will conduct a compression test to reveal the condition of the pistons, piston rings, valves and cylinders. A low compression reading (typically below 100) indicates a leaking valve, piston rings or worn out cylinders. It may be the reason behind reduced vehicle performance. If this is the case, the mechanic will rebore the cylinders and insert larger pistons and piston rings. The mechanic could also take the vehicle to a dynamometer to test its horsepower and torque. 

Dismantling and Replacement 

The purpose of the rebuild will determine the extent of work that the engine needs. For example, a classic car enthusiast would want to restore the motor in stock condition. On the other hand, a race car or offroad truck may require enhanced performance. As such, the mechanic may need to replace most of the engine components to ensure the engine can withstand more pressure.

Some major components that the mechanic will replace during the rebuild include the following: 

Fuel system

This includes the fuel filter, fuel pump and fuel injectors. Over time, your fuel injectors will wear out, thus, affecting the delivery of fuel into the combustion chamber. An unbalanced air-fuel mixture will not only affect vehicle performance but may also cause an engine knock. Fuel filters and pumps may be clogged with carbon deposits and grime. As such, they must be replaced.

Camshaft

The camshaft is a device that pushes the valves that let in the fuel and remove exhaust gases from the engine. A worn-out camshaft may be unable to push these valves, thus choking the engine. More often than not, a replacement will solve this problem. However, you may need to rebuild the camshaft to enable it to open the valves for longer, therefore, letting in more fuel and driving more exhaust gases from the engine.

Air Intake

The air intake system comprises the throttle body, air filter and mass flow sensor. The air filter cleans the air from outside. The mass flow sensor calculates the available mass of air while the throttle body determines the exact amount of air that will enter the chamber. These elements have to be in good condition to ensure a balanced air-fuel mixture.

As the mechanic assembles the engine, they will change the gaskets and oil rings to prevent oil leakage. They will also conduct routine maintenance such as changing the timing belt, serpentine belts, spark plugs and engine oil.

To learn more, contact a local engine rebuilder.

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