Building tips

Application

With Simons Universal parts, you can build exhaust systems for most vehicles. The silencers are full-flow type type, meaning the exhaust gases can pass straight through the mufflers with minimal resistance. Therefore, the mufflers are especially suitable for sports and racing but are also perfect for any other situation where you want to build your own exhaust system.

In addition to the sound absorbtion wool, the silencers are also insulated with a layer of heat-resistant stainless steel wool around the insert pipes. This means the silencers can withstand temperatures up to 800°C.

Noise Level

The sound level of an exhaust system is determined by a number of complex factors that are impossible to establish in advance for each individual case. The most important factors that affect what sounde level an engine produces are engine displacement, number of cylinders, compression, RPM, and boost pressure for turbocharged engines. The distance of the mufflers from the engine and exhaust pipe opening plays a significant role. The sound suppression can change if you move the muffler a few centimeters forward or backward. Therefore, it’s never possible to say with certainty how much a specific muffler will reduce. The only way is to experiment and, if necessary, add extra silencers.

10 Tips

1. Choose silencers with as large a volume as possible.
2. Do not place the silencers too close to the engine or catalytic converter. The maximum allowed temperature could be exceeded. It is important that the exhaust gases have time to cool somewhat before reaching the first muffler. Therefore, place the mufflers as far back as possible.
3. Do not route the exhaust pipes too close to the fuel tank or lines.
4. Carefully consider how the suspension and drive axles move while driving.
5. Do not end with a long pipe (longer than 50-70 cm). This can easily cause resonance in the pipe.
6. It is easier to reduce sound level the more cylinders the engine has.
7. It is easier to reduce sound level in turbo engines than naturally aspirated engines.
8. Use original suspension points if possible.
9. Ensure that heat is not transferred from the exhaust pipes to rubber suspensions. These can be damaged. Keep a distance of 20-30 mm between the pipe and rubber.
10. Carbon monoxide hazard! Ensure the exhaust system is sealed properly between parts and that the exhaust gases are directed away from the vehicle.

Warranty

The warranty on the Universal range covers, naturally, only material and manufacturing defects. The person installing the parts is responsible for ensuring they are installed in such a way and context that the intended function is achieved in all respects