The muffler corrugation is a small but critical element of the exhaust system Nissan Terrano 2014. It compensates for engine vibrations, preventing weld failure and extending the life of the entire system. However, due to constant loads, temperature changes and aggressive environments, the corrugation wears out faster than other components. Owners Terrano often encounter its burnout on the run from 80,000 to 120,000 km, and ignoring the problem leads to exhaust leaks, increased noise and even the release of toxic substances into the cabin.
In this article we will look at signs of corrugation failure on Nissan Terrano 2014, we will tell you how to choose a high-quality replacement (including original articles and analogues), and also give step-by-step replacement instructions - from preparing tools to final inspection. We will pay special attention to the typical mistakes that car owners make during repairs, and we will explain why saving on cheap spare parts can result in double expenses.
Signs of a malfunctioning muffler corrugation on a Nissan Terrano 2014
The first symptoms of corrugation wear often go unnoticed, as they appear gradually. However, ignoring them is dangerous: a destroyed corrugation leads to depressurization of the exhaust system, which is fraught not only with noise, but also carbon monoxide entering the cabin through ventilation — and this is a direct threat to the health of passengers.
Key signs to look out for:
- 🔊 Increased noise from under the bottom, especially at idle or during acceleration. The sound may resemble a "chirping" or dull hum that gets louder when you press the gas.
- 💨 Exhaust smell in the cabin, even with the windows closed. This is an alarming signal - it means that gases are penetrating through cracks in the body or ventilation.
- 🔥 Body vibrations at low speeds, which are transmitted to the steering wheel or pedals. This occurs due to a violation of the engine vibration compensation.
- 🛠️ Visible damage: cracks, rust or tears on the surface of the corrugation (can be detected during inspection on a pit or lift).
On Nissan Terrano 2014 The corrugation is located in the front part of the exhaust system, immediately after the exhaust manifold. Due to high temperatures (up to 600–800°C) it wears out faster than on other models Nissan. For example, on Qashqai or X-Trail of a similar generation, the corrugation life may be higher by 20–30% thanks to a different fastening design.
⚠️ Attention: If you notice black plaque on the back of the car (especially around the exhaust pipe), this may indicate air leaks through cracks in the corrugation. In this case, urgent diagnostics are required - driving with such a malfunction is dangerous!
Why the muffler corrugation fails: the main reasons
Corrugation service life Nissan Terrano 2014 depends on several factors, but on average it requires replacement every 80–150 thousand km. However, in some cases, wear occurs much earlier. Let's look at the key reasons:
1. Natural wear and tear of the material. The corrugation is made of multi-layer stainless steel, but constant heating/cooling cycles lead to microcracks. Over time, they expand and the metal loses strength. On Terrano with engines 2.0 MR20DD or 1.6 HR16DE The exhaust gas temperature is higher than on diesel versions, so the corrugation wears out faster.
2. Aggressive driving and overloads. Sudden starts, off-road driving or towing a trailer increase the load on the exhaust system. Vibrations and impacts accelerate the destruction of corrugated welds.
3. Corrosion due to chemicals. In winter, salt and reagents that are sprinkled on roads fall on the hot corrugation and cause accelerated corrosion. The joints between corrugated pipes and pipes are especially vulnerable.
4. Poor quality spare parts. Cheap analogues made of thin steel or with poor welding serve as 2–3 times less original. For example, brand corrugations Bosal or Walker can last 50–60 thousand km, whereas the original part is from Nissan withstands up to 120 thousand km.
5. Mechanical damage. Impacts against obstacles (for example, when parking on a curb) or careless repairs can deform the corrugation, which will lead to its rupture.
- Every 10,000 km
- Only when there is noise
- Once a year before maintenance
- Never checked
How to choose corrugation for Nissan Terrano 2014: original vs analogues
When choosing a corrugation for Nissan Terrano 2014 it is important to consider not only the price, but also material, design and engine compatibility. The original part will cost more, but will last longer, while cheap analogues may require replacement within a year.
Below is a table with popular corrugation options for Terrano 2014 (petrol engines 1.6 And 2.0):
| Manufacturer | Article | Price (RUB) | Material | Resource (thousand km) | Notes |
|---|---|---|---|---|---|
| Nissan (original) | 20600-4M00A |
4 500–6 000 | Multilayer stainless steel | 100–150 | Best quality, perfect fit |
| Bosal | 250-1019 |
2 800–3 500 | Stainless steel + aluminum | 60–80 | Good budget option |
| Walker | 30745 |
3 200–4 000 | Stainless steel | 70–90 | Strong welding, but the thickness of the metal is less than the original |
| Eberspächer | 93505010000 |
5 000–5 800 | High alloy steel | 90–120 | Premium quality, close to the original |
| No-name (China) | Without article | 1 200–2 000 | Thin steel | 20–40 | Risk of rapid burnout |
When choosing corrugation, pay attention to:
- 🔧 Diameter and length: must exactly match the original (for Terrano 2014 —
50–55 mmin diameter, length150–180 mm). - 🛡️ Metal thickness: optimal
0.8–1.2 mm. Thin corrugations (0.5 mm) burn out inSeasons 1–2. - 🔥 Welding type: quality parts have argon welding, not a point one.
- 📜 Certificates: from trusted brands (Bosal, Walker) there are certificates of conformity
ECE R10orISO 9001.
⚠️ Attention: When purchasing corrugations for Nissan Terrano with engine2.0 MR20DDMake sure the part is rated for high temperatures (from800°C). Some universal corrugations can only withstand600°Cand burn out quickly.
Before purchasing corrugation, inspect the old part for cracks at welding points - this will help avoid repeated replacement due to defects.
Step-by-step instructions for replacing the muffler corrugation on a Nissan Terrano 2014
Replacing the corrugation with Nissan Terrano 2014 - a task of medium complexity that requires pit, lift or overpass, as well as a basic set of tools. If you have experience working with the exhaust system, you can handle 1.5–2 hours. If you have never done such repairs, it is better to contact a service center - errors during welding or installation can lead to gas leaks.
Required tools and materials:
- 🔧 Grinder or hacksaw for metal (for cutting old corrugation).
- 🔥 Welding machine (semi-automatic or argon welding).
- 🛠️ Keys on
10,12,14(for unscrewing fasteners). - 🧲 Magnet for holding nuts (when working in hard-to-reach places).
- 🧴 WD-40 or similar lubricant for rusty bolts.
- 🛡️ Protective gloves and glasses (required!).
Step by step replacement process:
Preparing the car. Drive Terrano on a pit or lift, secure the wheels with stops. Disconnect the negative terminal of the battery - this will prevent a short circuit when welding.
Dismantling the old corrugation. Inspect the exhaust system mountings. If the corrugation is welded, carefully cut it off with a grinder, stepping back
2–3 cmfrom seams. If it is mounted on a flange, unscrew the bolts (you may need WD-40).Cleaning joints. Remove rust and old welding residue from the pipes with a wire brush. Check the integrity of adjacent elements (for example, catalyst or resonator).
Installation of new corrugation. Try on the part - it should fit without tension. Weld the corrugation continuous seam (not pointwise!) to avoid leaks. If the mount is flanged, use new bolts with groovers.
Checking for leaks. Start the engine and inspect the seams for leaks (you can apply a soap solution - bubbles will indicate problems). Listen to the system operate at different speeds.
Inspect the condition of adjacent elements of the exhaust system|Check the availability of all tools|Buy a new corrugation with a margin of length|Prepare a welding machine and electrodes|Ensure good ventilation in the garage-->
⚠️ Attention: If after replacing the corrugation there appears metallic ringing when the engine is running, this may mean that the part is installed skewed or is fixed too tightly. In this case, reinstallation is required!
What to do if you don’t have a welding machine?
If you do not have the opportunity to weld corrugation, you can use high pressure clamps (for example, from Norma or ABRO). However, this method is less reliable - the clamps require regular checking and tightening (every 5,000 km).
Typical mistakes when replacing corrugations and how to avoid them
Even experienced car owners sometimes make mistakes when replacing corrugations with Nissan Terrano, which leads to repeated breakdowns or gas leaks. Let's look at the most common mistakes and ways to prevent them:
1. Use of spot welding. Many “handicraft” craftsmen cook corrugation at several points to save time. However, this leads to depressurization of seams already in 10–20 thousand km. Solution: The welding must be continuous, with penetration along the entire perimeter.
2. Wrong choice of corrugation. Installing a part with a smaller diameter or thin walls speeds up its burnout. Solution: always check the original article numbers or proven analogues (see table above).
3. Ignoring the state of neighboring elements. If you don’t check the corrugations when replacing catalyst, resonator or lambda probe, new problems may appear within a few months. Solution: Inspect the entire exhaust system for corrosion or cracks.
4. Re-tightening of bolts for flange mounting. Excessive force will result in flange deformation or thread stripping. Solution: tighten the bolts firmly 20–25 Nm (use a torque wrench).
5. Lack of anti-corrosion treatment. After welding, unprotected seams quickly rust. Solution: cover the seams heat-resistant paint (For example, Bosny Heat Resistant) or anticorrosive.
The most common reason for the rapid failure of the corrugation after replacement is poor-quality welding. If you are not confident in your skills, leave the job to a professional.
The cost of replacing the corrugation in the service vs self-repair
Cost of corrugation replacement Nissan Terrano 2014 depends on the type of part, mounting method and region. On average, prices in Russia look like this:
| Type of work | Cost (RUB) | Time (hours) | Notes |
|---|---|---|---|
| Replacing corrugations (welding) | 2 500–4 000 | 1.5–2 | Excluding cost of part |
| Replacement of corrugation (flange mounting) | 1 800–3 000 | 1–1.5 | Easier and cheaper than welding |
| Exhaust system diagnostics | 500–1 500 | 0.5–1 | Includes leak testing |
| Welding work (if pipe repair is required) | 1 000–2 500 | 0.5–1 | In addition to replacing corrugations |
Replacing it yourself will cost less, but will require:
- 💰 Purchase or rental of a welding machine (from
1,500 rub./day). - 🛠️ Purchase of consumables (electrodes, paint, clamps).
- ⏳ Time spent (from
3–4 hoursfor a beginner).
When should you go to the service center?
- 🔧 If you have no experience in welding or working with the exhaust system.
- 🔥 If the corrugation is welded to the catalyst or resonator (careful cutting is required).
- ⚠️ If additional problems are discovered during diagnostics (for example, cracks in pipes).
Long term quality replacement in service may turn out to be more profitable than DIY repairs with the risk of errors. For example, if after artisanal welding the corrugation only lasts 20 thousand km, and the service will give a guarantee 1 year, then the savings turn out to be imaginary.
Prevention: how to extend the life of a muffler corrugation
Although the corrugation is on Nissan Terrano 2014 is a consumable, its resource can be increased by 30–50% subject to simple rules:
1. Regular cleaning of the exhaust system. In winter, salt and reagents corrode the metal. Wash the bottom (including corrugation) 1 time every 2 months using special shampoos (for example, Liqui Moly Unterboden-Pflege).
2. Careful driving. Avoid sudden starts and braking, as well as driving through deep puddles (water gets on the hot corrugation and causes microcracks). When off-road, keep your speed to below 40 km/h.
3. Anti-corrosion treatment. Every 20 thousand km Apply to corrugations and welds heat-resistant anticorrosive (For example, Dinitrol 479 or Tectyl ML). This will protect the metal from rust.
4. Monitoring the condition of the suspension. Worn silent blocks or struts increase vibrations that are transmitted to the exhaust system. Check the suspension every 30 thousand km.
5. Use of high-quality fuel. Poor gasoline with high sulfur content accelerates corrosion of the exhaust system. Refuel at trusted gas stations (for example, Lukoil, Gazpromneft, Rosneft).
6. Periodic inspection. Every 10 thousand km look under the car or ask the maintenance technician to check the corrugation. At the first sign of rust or cracks, it is better to replace the part in advance.
The most effective prevention is timely replacement of corrugations at the first signs of wear. Repairs will cost less than eliminating the consequences of depressurization of the exhaust system.
FAQ: Frequently asked questions about the Nissan Terrano 2014 muffler corrugation
Is it possible to drive with a burnt corrugation?
Short term - yes, but it is dangerous. Through cracks, they can get into the interior. carbon monoxide (CO) and other toxic substances, which leads to headaches, nausea and even loss of consciousness. In addition, a faulty corrugation increases the load on the catalyst, reducing its service life. We recommend replacing the part within 1–2 weeks after discovering the problem.
How long does the original corrugation last on Terrano 2014?
Under normal operating conditions, the original corrugation (article number 20600-4M00A) serves 100–150 thousand km. However, in aggressive conditions (off-road driving, frequent temperature changes, low-quality fuel), the resource may be reduced to 60–80 thousand km.
Is it possible to repair the corrugation without replacing it?
Theoretically, you can weld the cracks or use a heat-resistant sealant (for example, Abro ES-332), but this is a temporary solution. The sealant can withstand temperatures up to 600°C, but already after 5–10 thousand km the problem will return. Welding also does not guarantee durability - the seams often crack. Conclusion: Repair is only justified as an emergency measure before replacement.
Which brand of corrugation is better to choose for Terrano?
Optimal options in terms of price/quality ratio:
- Original (Nissan) - the most reliable, but expensive.
- Eberspächer - premium replacement, close to the original.
- Walker - a good budget option for those who are ready to change the corrugation every
70–80 thousand km.
Avoid Chinese no-name parts - they often burn out in Seasons 1–2.
Do I need to change the corrugation when replacing the catalyst?
Not required, but recommended. If the corrugation already shows signs of wear (rust, microcracks), it is better to replace it immediately so as not to disassemble the system again. In addition, a new corrugation with a new catalyst will provide better sealing and reduce the risk of leaks.