Crossover owners Nissan Murano second generation (Z51 body) are often faced with a paradox: the car has a comfortable suspension and a powerful engine, but at high speeds the noise level in the cabin becomes critical. The main source of discomfort is the hum of rubber, the whistling of the wind in the area of the mirrors and vibrations from the body, which are transmitted to the steering wheel and seats. Soundproofing Nissan Murano Z51 - this is not just a tribute to fashion, but a necessity to preserve the health of the driver and passengers over long distances.
The factory insulation in this car is designed more for city driving than for high-speed highways with high-quality coverage. The plastic door panels begin to rattle, and you can hear too many arches. To turn Murano Z51 into a real “still pool”, an integrated approach is required using specialized materials and adherence to gluing technology. Ignoring this issue leads to the fact that even new expensive tires cannot save you from the tiresome hum.
Why the standard sound insulation of the Nissan Murano Z51 is insufficient
Factory approach to sound insulation Nissan The Z51 body has its own characteristics that often do not stand up to the test of reality. The designers used thin sheets of metal in the doors and the absence of a vibration damper in some areas of the floor. This is done to reduce the overall weight of the car, but the result is that the metal acts as a resonator, amplifying low-frequency sounds from the engine and road. Vibration isolation it is practically absent from stock where it is needed most.
Plastic interior elements, such as door trim and dashboard, are attached to clips, which become loose over time. This creates a characteristic rattling noise that is confused with engine vibration. Soundproofing the interior requires not only the application of materials, but also careful sealing of all joints and crevices. Without this, even the most expensive materials will not give the desired effect of silence.
Particular attention should be paid to the wheel arches. IN Murano Z51 The plastic fender liners do not fit tightly, allowing the hiss of rubber into the cabin. Anti-gravel treatment and installation of additional sound-absorbing materials in arches can reduce noise levels by 15-20%. Many owners underestimate this aspect, focusing only on the doors, but it is the arches that are the main source of noise at speeds above 80 km/h.
⚠️ Attention! Don't try to save money on a floor vibration damper. Thin material will not dampen the resonance of the metal, and you will only hear a difference of 2-3 decibels, which will not justify the money and time spent.
Choice of materials: what really works for a crossover
The market offers many options, but for a heavy crossover type Nissan Murano Not everyone is suitable. You will need materials with high density and the right structure. Vibration damping materials based on bitumen or aluminum must have a thickness of at least 2-3 mm. Thin sheets simply cannot cope with the vibrations of massive doors and roofs.
For sound absorption, use open-cell materials such as felt, splen or isolon. They work like a sponge, absorbing sound waves that have passed through the vibration insulation. Thermal insulation also plays a role, especially if you often travel in the cold season. A layer of foil-coated polyethylene foam will help retain heat in the cabin and further reduce noise.
- 💎 Aluminum-coated bitumen sheets are the basis for doors and floors.
- 🎧 Felt or padding polyester - for the final layer in the doors and under the ceiling trim.
- 🛡️ Splen 4mm or 8mm - for sealing cracks and arches.
It is important to calculate the consumption correctly. On the door Murano Z51 waste a lot of material due to their large area and complex shape. Sealing wiring and technological holes also require additional sheets. Do not buy materials “by eye”; it is better to take a reserve of 10-15% for scraps and difficult areas.
- Bitumen sheets (Shumok, STS)
- Foam materials (Splen, Izolon)
- Integrated solutions (Shumoff)
- Expensive premium brands (STP, ComfortMat)
Preparing the interior and dismantling elements
The quality of work depends 80% on preparation. Before you begin applying materials, you must completely disassemble the interior. Remove the front and rear seats, door cards, plastic floor and ceiling trim. Dismantling must be careful not to break the plastic clips, which are often fragile on older cars.
Cleaning surfaces is a critical step. The metal must be perfectly clean, degreased and dry. Use White spirit or special degreasers, avoiding aggressive solvents that can damage factory soil. Degreasing guarantees that vibration isolation will stick tightly and will not fall off after a month of operation.
☑️ Preparation for sound insulation
Pay special attention to wiring and connectors. During operation, you may accidentally damage the insulation of wires or disable important sensors. Wear gloves and use plastic tools to pry off the panels. Security The electrical system is the number one priority when performing a deep renovation.
How to avoid breaking the clips when removing doors?
Use a plastic spatula or screwdriver wrapped in electrical tape. Apply pressure evenly rather than jerking harshly. If the clip is stuck, try prying it from both sides at the same time.
Door and glass processing technology
Doors Murano Z51 - this is the most difficult element for sound insulation due to the large number of window lift mechanisms and speakers. First, a layer is applied to the inside of the door vibration isolation. Cover about 70-80% of the area, leaving technological openings for access to the mechanisms. Do not seal the drainage holes at the bottom of the door, otherwise water will accumulate inside.
The second layer is a sound absorber. It is glued to the outer part of the door (the one that is visible when the door is open) and to the inner lining. This creates an enclosed volume that acts as a soundproof chamber. Sealing dynamics are also important: if the sound comes out the door, the quality of the music deteriorates and the noise penetrates into the cabin.
Glass requires a special approach. Apply a thin layer antigraia or a special soundproofing film on the inner surface of the glass. This will reduce the resonance of the glass and eliminate wind whistle. However, this must be done carefully so as not to damage the tinting or the surface of the glass itself.
- 🔊 Close the technological holes with dense material.
- 🌊 Ensure water drainage through drainage holes.
- 🔇 Use materials with high adhesion for complex shapes.
⚠️ Attention! When processing doors, do not block access to locks and drive cables. This may result in the central locking failing or the door being unable to be opened from the inside.
Before gluing the vibration insulation, heat the material and the metal of the door with a hairdryer. This will improve adhesion and allow the material to fit more tightly into complex body curves.
Soundproofing of floors and arched openings
Gender Nissan Murano — this is the zone of maximum vibration from the engine and the road. Here it is necessary to use the thickest and heaviest vibration damper. Apply the material in two layers if space allows, or use one, but very dense layer. Vibration isolation floor reduces noise and makes the interior warmer.
Wheel arches require complex treatment. An anti-gravel coating is applied to the outside (under the wheel arch liners), and a layer of vibration insulation and a thick layer of sound absorber are applied to the inside of the cabin. Arches often become a source of extraneous sounds due to poor sealing of the fender liners.
Don't forget about the trunk. IN Murano Z51 The spare wheel and tools create resonance. Treat the trunk floor and wheel arches in the luggage compartment. Soundproofing The trunk also helps reduce overall noise levels in the cabin, especially in the rear seats.
| Processing area | Recommended material (Vibro) | Recommended Material (Sound) | Approximate consumption |
|---|---|---|---|
| Doors | 2-3 mm (bitumen/aluminum) | Felt 5-10 mm | 4-5 m² per car |
| Cabin floor | 3-4 mm (heavy) | Splen 4-8 mm | 6-8 m² per car |
| Roof | 2 mm (light) | Felt 10-15 mm | 3-4 m² per car |
| Arches (from the inside) | 2-3 mm | Splen 4 mm | 2-3 m² per car |
The floor and arches are an area where you cannot save money. This is where the main background noise of a car on the highway is formed.
Roof and ceiling treatment
Flat roof Murano Z51 - This is an excellent resonator for rain and hail. Vibration isolation roof will turn the “drum” into a blank panel. Use a light but effective material, as the load on the roof fastenings should be minimal. The thickness of the material should not exceed 2 mm.
A layer of sound absorber is applied on top of the vibration insulation. This will remove the echo and make the sound in the cabin softer. Sound absorption on the ceiling also helps reduce wind noise that penetrates through the glass seals.
Don't forget about the glass seals. If they are worn out, noise will penetrate even with perfect sound insulation. Check the condition of the rubber bands and, if necessary, replace them or treat them with silicone grease to improve tightness. Seals - this is the first barrier to noise.
How to check the tightness of windows?
Close the windows, turn on the music at volume, and place your hand on the joint between the glass and the frame. If you feel vibration or hear a whistle, the seal needs to be replaced.
Final assembly and checking the result
After all work on applying materials is completed, the assembly phase begins. Install the door cards, seats and plastic in the reverse order. Puff bolts and clips should be neat but secure. Make sure that nothing interferes with the operation of the window and lock mechanisms.
Check the operation of all electronic systems. Turn on the audio system, check the operation of the windows, light sensors and climate control. Test drive - this is the final stage that will show how effective your work was. Drive on different types of surfaces and evaluate the noise level.
If you've done everything correctly, you'll notice a significant reduction in noise at speed. Conversations in the cabin will be clearer, and music will sound deeper and clearer. Comfort on the road - this is the result of painstaking work and the right choice of materials.
⚠️ Attention! Take your time with the final check. Allow the materials to sit and fully set for 24-48 hours before the first high speed ride.
Frequently asked questions (FAQ)
How long does it take to completely soundproof a Nissan Murano Z51?
The full range of work (doors, floors, arches, ceiling) takes from 2 to 4 days, provided that you work alone. In the service, this process can be completed in 1-2 days thanks to professional equipment and a team of craftsmen.
Is it possible to do soundproofing in winter?
Yes, but only in a heated room. The materials should be at room temperature, and the metal of the body should be dry and warm. Low temperatures reduce the adhesion of adhesive layers and can lead to peeling.
Will fuel consumption increase after soundproofing?
Almost unnoticeable. The weight of the added materials is about 40-60 kg for the entire vehicle, which has little effect on the dynamics and fuel consumption of a modern crossover with a powerful engine.
Do I need to remove the headliner to soundproof the roof?
This is the most difficult stage, requiring complete removal of the ceiling. If you are not confident in your abilities, it is better to entrust this stage to professionals, as there is a risk of damaging the roof sheathing or frame.
Noise insulation Nissan Murano Z51 is an investment in comfort and driving pleasure. Properly selected materials and adherence to technology will turn your crossover into a quiet and cozy cockpit, where every trip will become a real relaxation.