To begin the fight against excessive noise produced by the vehicle, start the offensive on all fronts. Before you make the plunge, you should clearly imagine the work of the exhaust system of a car engine. After the engine and exhaust system are balanced with each other so as not to interfere with each other. Disturbance of this balance may lead to improper engine operation.
Use the simplest method of noise reduction – set "Bank" (as motorists called for more end-muffler). It is made from the housing, through which passes a pipe with apertures. The case is filled with a filler of heat-resistant fiber, fixed fine mesh. It is installed between the catalyst and the standard muffler.
Cut out the section of pipe between the catalyst and silencer to the required length corresponding to the length of "banks". Remove the exhaust muffler. Install and attach the "Bank" to the resonator, using clamps and asbestos sheet for sealing the joint.
Install muffler seat docked with a "jar" using, again, the clamps and asbestos sheet for sealing the joint. When installing "banks" or the end of the silencer must be thoroughly sealing the joints of tubes of heat-resistant asbestos in order to prevent breakthrough of the exhaust gas, which will create increased noise level.
The additional effect of noise reduction will give replacement of the resonator mounted on the car by the manufacturer, on the same "Bank" with a heat-resistant filler. The replacement of the resonator can be made on the same technique.
You can try to use another method of noise reduction is to replace the exhaust manifold at manifold of special design. Unfortunately, this method relates to the difficulty of purchasing the spare parts for specific car brands.
Advice 2 : How to reduce engine noise
The noise of the engine appears as a result of leakage and wear of rotating parts. This noise is often audible not only brings discomfort, but also affect the performance of the engine.
Check the drive belt of the generator, and if possible, it is necessary to change it. The simplest option is to ensure optimum belt tension. This will ensure less noise, but for best result it is necessary to set the roller Shoe or single chain with ants. This Assembly, in contrast to the classical, to allow to reduce unpleasant sounds at times.
Valve are a third of the total noise of the engine, the main reason of which is lack of temperature compensation gaps. To remedy this defect, please install the lash Adjusters. However, this is not a guarantee that all the noise will disappear.
The noisethat appears from under the hood, can also be caused by the carburetor, namely, the system of the air cleaner. Guide the installation of large air cleaners that are put into the intake system of the engine. In addition to its primary function of cleaning the air they will also turn off the noise of the intake.
Against running the engine often enough noticeable noise cooling system. To resolve this problem, install the electric fan, which will rotate often, which does not exceed 3500 rpm, which is quite low. Don't forget the installation of supports of the radiator to complete the interchange electroengine with the vehicle body. If not, then getting rid of one noise, there will be another.
Remember that all the activities on noise reduction engine will not bring the desired effect unless you perform a full sound insulation under bonnet. After all, the sound in the closed space begins to bounce off the walls and amplified, so the noise will only increase. Carefully check the condition of the car, during a change worn out parts – all this will help to reduce sound activity.