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Replace a Spare part Middle Silencer (Middle Exhaust) – a defective one or if the limit of use has been already reached. Find out useful information about Middle Silencer (Middle Exhaust)

Centre silencer or resonator is another important component of the exhaust system, which is necessary to release engine chamber from burnt gases and to gas it with new. Silencer resonator directly affects the engine power. That is why in sports cars usual resonator is replaced with an advanced one to provide excellent pressure reduction in the chamber. When gases enter cone-shaped silencer resonator they are reflected from the surface of the first cylinder and gradually reach the opposite wall. At the same time their speed decelerates.

Silencer resonator also reduces noise level. In the body of the centre silencer resonator the right amount of air flow deflectors are formed, which are defined as acoustic mirrors. When getting on these acoustic mirrors, sound waves lose part of the energy. Centre silencer applies a principle that involves the creation of two unequal volume capacities that are separated by a partition. At the same time, getting into each of these recesses, air flow significantly reduces the natural frequency of oscillation due to the friction of the gas particles in the holes.

This principle can be very effective to suppress the low frequencies. But there is one more factor – it does not create a strong resistance to air brands. Exhaust system resonator, as well as any part of a car muffler, experiences serious stress because of very high temperatures, which together with an external influence is seen as a hostile environment. Of course, any aggressive environment can destroy the integrity of the centre silencer. As a result, maintenance services will be required.

Do you need to buy a centre silencer at a good average price? Refer to our online store. The necessary part will be delivered to you in time. Just like any other important car parts, such as axial joint, supply and fuel tank.

Middle Silencer (Middle Exhaust) for VW CORRADO (53I), MERCEDES-BENZ C-CLASS Coupe (CL203), FORD MONDEO III Estate (BWY)

Middle silencer failure
  • mechanical damage to the body;
  • burning out;
  • wear;
  • clogging of the perforated tubes.
Symptoms of resonator faults
  • the smell of the exhaust gas inside the vehicle;
  • increase in exhaust noise;
  • sudden changes in engine rpm;
  • soot deposits beneath the car;
  • frerquent failures or melting of the catalytic converter;
  • loss of engine power;
  • engine overheating;
  • resonator rattling during movement.
Causes of middle silencer faults
  • mechanical damage;
  • corrosion;
  • exceeding the maximum allowable temperature of the resonator;
  • sudden temperature drops;
  • condensate or water ingress into the system;
  • the impact of gritting salt;
  • use of low-quality fuel;
  • oil getting in the system.

Inspection of the resonator can be done independently. The part’s case should have no mechanical damage and corrosion, metal oxidation and soot traces. A more complete diagnosis is carried out at service stations. In assessing the performance of the resonator its temperature and throughput capacity are measured.

Lifetime of a middle silencer is designed for 20 000 kilometers. In adverse conditions of use this figure will decrease by half. Exceeding the lifespan is not recommended because excessive wear of the part leads to increased vibrations and exhaust gas temperature, which quickly will damage the catalyst.

Replacing the middle silencer

Resonator repair is irrelevant. The part is all-metal, so even tampering with the body in order to repair it will only impair its properties.

For replacing the resonator it is disconnected from the pipe. Due to the influence of high temperatures the item can stick to the mountings. In this case, you must use a special tool to cut it with the fixings. Such repair works must be conducted exclusively at service stations.

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