Engine operation is judged by the noise of gases from the exhaust pipe. The manufacturer of your car has equipped it with an exhaust system. Exhaust manifold, connecting pipes, muffler - everything is calculated. It is almost impossible to improve this design alone. But since the exhaust system works in difficult conditions (high temperatures, high pressure, aggressive oxide processes), its elements, and in particular, the muffler, fail earlier than other vehicle systems.
Instructions
Step 1
And now you are faced with a dilemma: buy a new muffler from a parts store or try to make one yourself. The purchase in the store is somewhat alarming. It is not clear what kind of company made the muffler, from what material, and the quality of workmanship often causes distrust. There is a desire to try to make this simple-looking detail at home yourself. Moreover, replacing the standard muffler with a straight-through one will help to slightly increase the engine power.
Step 2
External dimensions and fastening elements are in front of your eyes. Measure them and purchase the basic materials for making a new muffler. The case, to increase its service life, is best made of stainless steel. Use the old flanges, cutting them off with a grinder. Change the connecting pipes to new ones made of pipes of a suitable diameter and curved according to a template.
Step 3
Now decide what you want to get as a result of the muffler. It can be an exhaust system that:
- Does not reduce engine power;
- Reduces engine power, while significantly reducing engine noise.
Step 4
In the first case, a straight-through muffler is needed without the device of any energy-absorbing chambers. Its principle is that the faster the engine cylinders are freed from exhaust gases, the less effort will be spent on removing them, the more power will be obtained at the output. After completing a series of simple operations, you will get a "roaring" muffler, indicating the power of your car.
Step 5
The second option is for lovers of a quiet life. If you avoid the occurrence of conflict relationships with others, fill the muffler with filling. It is known that noise is air vibrations caused by the speed of movement of gases removed from the muffler into the atmosphere. In order to significantly reduce it and thereby reduce the noise level, it is necessary to stepwise reduce the pressure of the gases and their velocity from the moment they enter the muffler to the moment they are removed into the exhaust pipe. To do this, make holes in the pipe passing through the muffler and fix the partitions on it, which will divide the muffler space into chambers.
Step 6
Exhaust gases entering the muffler through the holes in the pipe fill the volume of the first chamber, i.e. expanding. Since the volume of the chamber is limited, gases enter the next chamber through the same holes in the pipe. In this case, the pressure decreases, because part of the energy is spent on increasing the volume, and then decreasing it in the first chamber. And so on from cell to cell until the exit of their muffler.
The speed of movement of the exhaust gases will be reduced, which will lead to a significant reduction in noise when they are released into the atmosphere.
