Engine & Transmission 412 Products

CV Boot Kits

A worn CV boot could let water in and grease out, leading to deterioration of the axle joint and, ultimately,

the driveshaft – which would be very expensive to replace. The job of a CV joint is to transfer a constant speed of torque (rotational power) to the wheels via the driveshaft and to support up and down suspension motion. In the event of a CV joint failure you might notice a vibration during acceleration that stops as soon as you take your foot off the gas pedal. Alternatively you might feel a clunking sensation during a gear change, most noticeably when the reverse gear is engaged. It is fairly straightforward to diagnose a CV joint failure by examining the joint. If the CV boot is damaged (ripped or worn out), you should check the CV joint beneath the CV boot to make sure it feels greasy. If it does not, you will need to replace the CV joint itself. However, if the joint is still well lubricated it should only be necessary to replace the CV boot.

CV Joint Kits

Like all car parts, CV joints wear over time. If you need to replace one or both of your CV joints, the complete CV joint kits listed below will see you right. The name ‘CV joint’ refers to constant velocity. Each CV joint rotates at a constant speed and in doing so, it allows your car’s gearbox to transmit power at a variable angle. This reduces friction and play, which in turn increases your car’s efficiency. Exposure to dirt and moisture is the main cause of CV joint failure. Such exposure will cause joints to corrode, and they become especially vulnerable when the CV boot tears or cracks. The failure of the joint will cause a clunking sound when you turn your wheel, and may also be evident when you accelerate or slow down.

Clutch Kits

Your vehicle's clutch should always remain in top condition, but over time you might find it needs replacing. When this is the case, choose a high-quality clutch kit. From the moment you switch on your car, your clutch is put into action. Helping you to smoothly change gears and offering a boost of power to your vehicle, it's important that it's always working as it should. If you notice something isn't right, it might be time for a replacement. When you need a new clutch, a clutch kit will ensure you have everything you need.

Cylender Head Gasket

After years of wear and being exposed to extremely high temperatures, gaskets and seals need to be replaced from time to time. Car gaskets and seals are designed to prevent the fuel and air mixture from leaving the cylinder during combustion, while also keeping oil from leaving the crankcase at the same time. In older engines, you may find that your gaskets are made of cork, but in newer vehicles it is likely that they are made of thin metal or carbon. Most seals are made out of rubber and are placed between the rotating engine parts. While it is important that these are replaced when a leak in the engine is detected, it is just as important to replace the gaskets and seals when any corresponding components of the engine are replaced.

Throttle Body

The throttle body controls the engine’s air intake by means of a regulating valve. When you press down on the accelerator pedal, air rushes into the throttle body. The amount of air that flows on into the engine is regulated by a butterfly valve called the throttle plate, which rotates and opens up the throttle passage to let in the right amount of air depending on how much acceleration is required. If the throttle body malfunctions you may notice your engine becoming sluggish, spluttering on acceleration or stalling due to an imbalance in the air–fuel ratio. Often the throttle body simply needs a clean or a service. You can do this yourself using a throttle body service kit, which will contain full instructions for use as well as all the parts you need. Components in the service kit include the vital gaskets and rubber O-rings required to fully seal all joints. If, however, your throttle body is beyond repair you will need a new one to keep the engine working efficiently.

Rocker Cover Gasket

Heat shields and rocker covers can be fitted to your car’s engine and exhaust system to prevent overheating, helping to avoid costly breakdowns. Heat shields and rocker covers help to insulate your car’s exhaust system and engine, preventing extreme temperatures from damaging delicate components. They’re usually made of layers of metal that simply wrap around the exhaust manifold, forming a heat sink that bears the brunt of the temperatures generated by fast-moving parts. Over time, these components can wear out – some of the most common signs include a burning smell, melted plastic components under your bonnet, and unusual noises. Overheating is a common cause of breakdowns.

Engine Mounting

With such a heavy load to bare, the filling of the engine mount can perish or leak over time, causing the engine to rattle about. The engine mount works by fixing the engine firmly to the car’s sub-frame, or engine cradle. It is one of several mounts that hold both the engine and the transmission together and in place. So that the metal surfaces of the engine do not jar against those of the car body, sending shock waves through the car, rubber is used to fill the engine mount or, in some models, liquid is injected. Vacuum-controlled or electromagnetic mounts are used by some car manufacturers to further control the absorption of vibrations. Problems are caused when the mount materials start to deteriorate. Cracks or breaks in the rubber will inevitably cause friction as metal clashes against metal, or if the liquid filler (where used) leaks out, you will probably notice a juddering sensation and increased engine noise. An engine mount cannot be maintained or repaired – it has to be replaced when it starts to fail.

Timing Chain Kit

In the event of a timing chain failure, you will need a replacement chain – and it’s recommended you replace the other timing chains at the same time if your car has more than one. The timing chain is an alternative to the timing (or cam) belt. Its job is to control the opening and closing of the engine’s valves by turning the camshaft and crankshaft at the right speeds. The timing chain is subject to wear and tear along with other parts in the chain drive mechanism, and should be replaced every 40,000 – 100,000 miles. As well as the expected wear and tear of moving mechanical parts, the timing chain’s demise will be further hastened by infrequent oil changes, impure oil or a depleted oil tank. When a timing chain becomes worn it will stretch, affecting the ignition and slowing down the opening and closing of the engine valves. This might result in a sluggish engine and difficulty starting, as well as producing some strange noises such as rattling or squealing. You could more than double the timing chain’s lifespan if you look after your engine and change the oil regularly. However, do be sure to replace it (and its accompanying parts) when worn, or it could break and cause severe damage to the engine.

Tensioner

Tensioners, idlers and dampers are vital parts of your car engine’s timing control and help it operate at peak efficiency. Tensioners, idlers and dampers all keep your engine running smoothly by adjusting the timing belt or camshaft so that it’s properly synchronised at all times. Tensioners prevent slackness in the belt, while idler pulleys guide the drive belt and route it around ancillary features like the water pump and alternators. Meanwhile, dampers work with the idler pulleys to help maintain tension and prevent the belt from coming loose. If any of these components becomes worn or fails, it could cause serious problems with the engine. Often, the first warning is a whining or growling noise that increases the harder your engine is working – if you hear this, it’s best to head to a mechanic pronto to get the problem diagnosed.

Engine Bearings

Engine bearings support the weight of the crankshaft, allowing it to spin freely inside the engine bay. If the support has gone and you hear a knocking sound in the engine. The rotation of the crankshaft is crucially important to the operation of your vehicle. It is exactly what makes your car move, and the engine bearings provide the support for that to happen. They come in a set comprising of rod bearings and main bearings to keep your crankshaft in motion. Given that they are one of the essential components of a car, they are subject to much wear and tear and often need replacing, but there is a difference in the seriousness of faulty engine bearings. If your main bearings go then the crankshaft will likely need replacing, but if your rod bearings go the engine itself might need to be rebuilt altogether.

Drive Belts

The drive belt plays a vital role in the overall efficiency of your engine. Avoid unnecessary breakdowns by replacing your existing product with a high quality car drive belt from cmgeurospares.com and explore the range below today.

Timing Belts

Usually made of synthetic rubber, with a toothed inner surface, the timing belt is subject to wear and tear and should be replaced at regular intervals to prevent snapping – something that would be disastrous for any engine. The job of the timing belt is to control the opening and closing of the engine’s valves by turning the camshaft and crankshaft at the right speeds. We stock a large range of durable timing belts for all types of car. It’s essential to keep the timing belt at the right level of tension. Too loose and it will flap about – which could result in the engine valves opening at the wrong time and being struck by the pistons; too tight and it will put excess strain on the cog bearings. The correct tension is maintained by tensioner pulleys, which should be checked regularly and replaced if worn to ensure the timing belt does not malfunction. There are visual signs of wear and tear you can look out for in the timing belt such as cracks, shredding, sagging or brittleness. In addition you may hear a squealing sound if the belt is not turning properly. However, the timing belt can just snap without warning, so it’s important you don’t neglect to replace it in line with your car manufacturer’s specification, even if you don’t notice any signs of damage. The general rule of thumb is every four years or 60,000 miles, or slightly less often for newer vehicles.

Timing Chains

In the event of a timing chain failure, you will need a replacement chain. The timing chain is an alternative to the timing (or cam) belt. Its job is to control the opening and closing of the engine’s valves by turning the camshaft and crankshaft at the right speeds. The timing chain is subject to wear and tear along with other parts in the chain drive mechanism, and should be replaced every 40,000 – 100,000 miles. As well as the expected wear and tear of moving mechanical parts, the timing chain’s demise will be further hastened by infrequent oil changes, impure oil or a depleted oil tank. When a timing chain becomes worn it will stretch, affecting the ignition and slowing down the opening and closing of the engine valves. This might result in a sluggish engine and difficulty starting, as well as producing some strange noises such as rattling or squealing. You could more than double the timing chain’s lifespan if you look after your engine and change the oil regularly. However, do be sure to replace it (and its accompanying parts) when worn, or it could break and cause severe damage to the engine.

Spark Plugs

Struggling with a misfiring engine, or a car that simply just won’t start? It might be time to update your spark plugs. Pop your hood, and even if you’re not a seasoned mechanic, you should be able to spot your spark plugs. These connect the ignition to the engine, and comprise an integral part of the combustion engine. In short, without functioning spark plugs, not a lot will happen when you turn the key. It’s fairly common for your spark plugs to fail over time, especially if they’ve not been replaced recently. In fact, it’s good practice to replace them with every service to ensure your vehicle stays in tip top (and most importantly of all) functioning shape.

Fuel Injector

A fuel injector comprises a valve and atomising nozzles; several of these work together in a car’s fuel injection system. The job of the fuel injector is to dispense the fuel into the engine efficiently. Fuel injectors were a very useful development from the old carburettor system as they improve the fuel efficiency of cars while also reducing pollution. For internal combustion to take place in a car’s engine, the car needs both oxygen and fuel. There is an air-intake system to deliver the oxygen and it is the fuel injectors that deliver the fuel. Since the fuel supply is limited and the oxygen supply is inconsistent, the engine needs to dispense just the right amount of fuel to mix with the oxygen in order to be as efficient as possible – this is what the fuel injectors do. Fuel injectors can become clogged so it’s worth cleaning them every now and then. If you need new ones, it is recommended to replace the whole set at the same time.

Intercoolers

An intercooler is effectively a radiator that cools air before it reaches your turbocharger. This in turn makes your engine more efficient. An intercooler (also known as a ‘charge air cooler’) is a heat exchange component which is vital to the efficiency of your turbocharged engine. By cooling down air before it reaches the turbocharger, the intercooler allows your engine to combust more air and fuel per cycle. This increases the power that the turbocharger is able to deliver, and makes your car more efficient in the process. The turbocharging process puts your engine and other parts of your car under immense strain. It is therefore important that your intercooler is both working and of high quality.

Turbo Chargers

As well as being the greener option, a turbocharged car will give you a more responsive drive while also being cheaper to run. To get the most out of this clever device, be sure to invest in a turbocharger of the highest quality. A turbocharger is a mechanically complex invention. It comprises two fans, attached to either end of a metal shaft, and a compression chamber for gases. The hot exhaust gas from the cylinders drives one of the fans (the turbine), which in turn spins the second fan (the compressor). The compressor forces extra air into the engine’s cylinders (drawn from the car’s air intake). To make the system more efficient, the hot air emitted from the compressor is cooled by a heat exchanger to increase its density before it enters the cylinders, resulting in a faster fuel-combustion rate. This is what generates the extra power for the car’s drive. The magic of the turbocharging system is that all the extra power is recycled power – it is generated by its own exhaust gases – so it comes at no extra running cost.

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