Silent exhaust unit: operation, maintenance and price
Content
Your vehicle's exhaust pipe is subject to harsh conditions and significant vibration, so repairing it is critical to keep it functioning properly and your vehicle's safety when you are on the move. This is what the silent exhaust unit provides.
💨 How does the exhaust silent block work?
A silent block is a mechanical part made of flexible materials such as plastic or rubber, which is designed to limit fluctuations and absorb the aftershocks. In particular, the silent exhaust unit, also known as silent block for mounting or silent block for exhaust suspension, works in conjunction with a metal clamping ring that secures the entire exhaust system.
In addition, the exhaust silent block has the role of maintaining the system and absorbing vibrations... Thus, it keeps the exhaust line on Frame vehicle to prevent any part from being disconnected and interfering with the operation of your vehicle.
Moreover, he play a role amortizer between mechanical parts thanks to its rubber compound. Finally, the silent exhaust unit has the feature excellent heat resistance because the line can heat up to 220 ° C... Depending on the car, the silent block can have 4 types:
- Standard Silent Block : consists of an elastic block placed between two metal elements;
- Silent block balance : works for compression, there are usually 3 of them on the vehicle;
- Hydraulic silent block : its operation is carried out on oil, and its control can be electronic;
- Anti-rollover silentblock : it has two different shapes: a rod with an elastic block or a cylinder.
🛑 What are the symptoms of the HS silent block?
The silent exhaust unit is a wear part and therefore will wear out over time and with the use of your vehicle. Thus, you will be able to detect the defect of this by encountering the following symptoms:
- One exhaust line unstable : since the silent exhaust block no longer holds it, it is no longer properly secured and, in the most severe cases, may come into contact with the road and come off completely;
- Very strong vibrations : the silent block no longer absorbs vibrations, so they will be felt when driving on board;
- Clicks are felt : this will happen with every blow when the bush or ring is in poor condition;
- Significant exhaust noise : it is also possible that your exhaust is louder and sometimes masses of smoke may come out;
- Cracked or cracked silent block : a visual inspection is necessary, there is a possibility that you will notice loose rubber residues.
If one of these signs is present, it is very important to contact a professional auto mechanic as soon as possible to change the exhaust silent block.
🗓️ When should the silent exhaust unit be replaced?
Since the silent exhaust block is made of rubber, it naturally degrades over time due to its composition. If it comes into contact with oil or fuel, it will also accelerate the destruction of the material. This can happen if there is a leak in your vehicle.
On average, it is recommended to change them every 220 kilometer... As a rule, it is replaced by metal clamping ring that oxidizes over time, especially if your car is often parked on the street.
However, if you notice any signs of wear before reaching this mileage, don't wait to go to the garage for a muffler replacement.
💸 How much does it cost to replace the exhaust silentblock?
By itself, a silent exhaust unit is not a very expensive part to buy. On average, it is sold between 10 € and 30 € individually. This change is due to the type of silent block, the material from which it is made, and its compatibility with car models.
To this amount must be added the cost of labor to replace the silent block. This is a fairly quick operation: let it run from 1 hour to 1 hour 30 minutes, i.e. From 50 € to 100 € in garages. In total, this change can cost from 60 € and 130 €.
The silent exhaust unit is an integral part of your vehicle's exhaust system. Indispensable for good maintenance of this on your chassis, it should be checked and serviced regularly, otherwise you risk disconnecting the exhaust pipe!
