The engine is a conductor in a chorus of different units, which consists of a modern car. In the motor, the energy of the fuel turns into the mechanical force needed to drive the vehicle. Based on the source of the energy consumed by the motor, the following types are known:
- internal combustion engines (abbreviated as internal combustion engines);
- electric motors;
- hybrid power units (combining an internal combustion engine and an electric motor).
The principle underlying the operation of any piston internal combustion engine is the following. If you put a small amount of high-energy fuel, such as gasoline, in a small enclosed space, and light it, then the combustion in the form of gas releases a large amount of energy. If you create a continuous cycle of small explosions, whose speed will be, for example, a hundred times per minute, and put the resulting energy in the right direction, you get the basis of the engine.
Cars use a “four-stroke combustion cycle” to convert petrol into the driving force of a four-wheeled car. The four-stroke approach is also known as the Otto cycle, after Nicolaus Otto who invented it in 1867. The four-stroke approach refers to the inlet clock, compression stroke as well as combustion cycle and the cycle of removal of combustion products.
Regardless of what “food” is needed by the engine, the “heart” of the car needs proper maintenance. Temperature conditions, the intensity of loads, quality of fuel and oils significantly affect not only the performance but also the life of the power unit. If you know how to properly operate the engine, you can avoid serious damage and extend the life of your car.
However, if your motor performance has started to decrease, rebuilding the ageing and worn out motor can help.
5.7 hemi performance engine rebuild kit
The HEMI is an internal combustion motor with hemispherical combustion chambers. The name of this power unit comes from the word “hemispherical”.
Initially, this technology was used by Chrysler, and the manufacturer itself positioned it as a motorsport-oriented. Most often HEMI V8 engines can be found on powerful sports cars. These motors are considered sporty due to their design. Thus, the location of valves at an angle, rather than in one plane, allows you to increase the size of the valves themselves, which improves ventilation of the combustion chamber and significantly increases the output power. Also, the suction capacity of the motor is high. Due to the special design, the fuel-air mixture channels are less curved, which reduces the resistance of the mixture flow.
Unlike a conventional V8 motor, the HEMI power unit differs primarily in its design. The upper arch of the cylinder combustion chamber is made in the form of a hemispherical dome with a spark plug and two valves. The lower surface of the combustion chamber is formed by a piston with a flat surface. This is a fundamental difference from other engines, in which the combustion chamber is cylindrical, with a flat surface of the upper arch and piston.
Even a car that behaves perfectly, it still needs regular diagnostics of all parts of the system.
The motor, which needs to be overhauled, has several signs:
- Knocking while it’s running. This usually means worn crankshaft liners or necks or piston problems. If knocking is heard, even when no phonendoscope is used, the oil pressure lamp is lit or blinking (lowering the pressure in the lubrication system), the engine needs to be repaired urgently.
- Increased oil consumption and blue smoke from the exhaust pipe signal problems with DAC (worn cylinders, pistons, piston rings, etc.).
- If you notice a decrease in-cylinder compression while you have increased oil consumption and noted insufficient oil pressure at low rpm, you urgently need to repair your engine systems.
Of course, the above-mentioned problems can also occur due to other malfunctions. But in any case, the first thing you need to do is to disassemble the engine and make a defect.
If you are not satisfied with the performance of your motor, there are many things that you can do to return the powerful character of your vehicle motor. It is possible to install certain upgrades like a higher-performance intake or exhaust. You can mount power-enhancing add-ons like a spoiler. Or, you can have the most benefits by getting a rebuild kit. This kit is a package that includes such parts as pistons, cams and lifters, as well as smaller hardware like pistons rings and seals. However, the cost of a 5.7 hemi rebuild kit is quite high. You can pay somewhere from $1500 to $2000.
Gen 3 5.7 rebuild kit
There are some reasons why the motor wears out too quickly. The main thing for an engine is the choice of the right oil, the level of lubrication and the condition of the filters. There is no need to save on oil and it is better not to replace semi-synthetic or synthetic oil with cheap mineral oil. It is necessary to periodically check the oil level, top up the grease and do not allow its mixing.
It is also necessary to monitor the condition of the air filter and change it if necessary to prevent abrasive particles from entering the cylinders. Engine wear is also accelerated if the engine periodically runs at maximum rpm or the vehicle often stands in traffic jams at idling speed;
An overhaul is a complex process with many operations. However, if the repair is carried out by professional technicians, the motor can be turned almost to the factory state. Of course, this procedure costs a lot of money, especially if you use original components. Rebuild kits is what will help you bring back a high motor performance and save money instead of buying a new one.
Gen 3 rebuild kit is not a cheap one. It can cost somewhere from $2000 to $3000 depending on the parts you need. It is a full set consisting of everything you need from pitons and rods to main bearings and thrust water.