How long does an N47 timing chain last?
BMW usually consider lifetime to mean 100,000 miles. Replacement of the timing chain on the 1 series, 3 series and 5 series engines normally require removal of the engine. Depending on the RPM at the time of failure, the engine may or may not be salvageable due to the high possibility of internal engine damage. The BMW N47 engine is a 2. It produces between 143 to 204 horsepower and offers a torque range of 290 to 400 Nm.If you own a BMW with an N47 engine, you may have heard of a recurring problem: timing chain failure. This defect affects many diesel BMW models manufactured between 2007 and 2015 and, if not detected early, can lead to costly repairs, with estimates often exceeding €3.BMW’s N47 engine is a great option for those who value economy and modern solutions, while the M57N2 is a classic for fans of power and durability, ideal for larger BMW models like the BMW e60 M57 or BMW x5 E70 M57.The BMW B47 is a four-cylinder common rail diesel engine produced by BMW. It debuted in 2014 as the successor to the previous N47 engine.Well, overall the BMW B47 engine is reliable, more so when you compare it with the earlier N47 engine. Treat it right and drive it sensibly, it’ll easily see over 150,000 miles.
Can you change the N47 timing chain without removing the engine?
The N47 engine design requires the engine to be removed from the vehicle to safely access the timing chain. Here’s why: Limited Access: The timing chain is located deep inside the engine block, behind the crankshaft and camshaft. N47 Reliability: The N47 engine has a more mixed reputation when it comes to reliability. While it offers good performance, it has been known to suffer from more frequent issues, especially as it ages: Timing Chain Failures: The most significant issue with the N47 is the timing chain.The M47 is an older-generation engine, simpler and more reliable, with a front-mounted timing chain. It is a great choice for those who value reliability and want to avoid costly repairs. The N47 is more dynamic, more fuel-efficient, and more modern, but unfortunately less reliable due to its rear-mounted timing chain.If reliability, lower failure risk, and cheaper servicing are priorities, the better choice is the M47 or its later version, the M47N/M47N2. If you care about better performance, quieter operation, and modern technology, you can go for the N47 – but be prepared for possible timing chain failures and high repair costs.It delivers respectable power and offers an abundance of torque early in the rev range. Despite its merits, the N47 has faced criticism, largely due to concerns over timing chain reliability. Up until 2011, these engines were susceptible to catastrophic timing chain failures.It delivers respectable power and offers an abundance of torque early in the rev range. Despite its merits, the N47 has faced criticism, largely due to concerns over timing chain reliability. Up until 2011, these engines were susceptible to catastrophic timing chain failures.
What years are N47 timing chains affected?
n47 timing chain issue the issue applies to all applications and power variants of the engine produced from 01. The most seriously affected units which require the most extensive repairs were produced from 01. The bmw n47 and n47tu are both 2. N47tu (technical update) introduced several improvements over the original n47.The BMW N47 engine is a powerful and economical diesel engine, but it has had reliability issues, particularly with the timing chain on models produced before 2011. BMW made several improvements after this period, making versions after 2013 more reliable.The BMW N47 engine features a Double VANOS variable valve timing system. This system optimizes the timing of the intake and exhaust valves, enhancing the engine’s performance and efficiency.The most seriously affected units which require the most extensive repairs were produced from 1 March 2007 to 5 January 2009. However, there have been reports of timing chain failure in BMW diesel engines manufactured until 2015.The N47 engine, used in BMWs from 2007 to 2014, is notorious for timing chain failures due to premature wear, often necessitating a complete engine breakdown as the chain is located at the rear of the engine.
When should I change the timing chain on my BMW 520d?
BMW and MINI Timing Chain FAQs A: Typically, 90,000 miles or 9 years, but this can vary based on usage and maintenance. A: Symptoms include engine rattles, misfires, metal shavings in the oil, and error codes related to the camshaft or crankshaft sensors. Most modern timing chains are designed to last the life of the engine. In many cases, they can go over 150,000 to 200,000 miles without issue, especially if the engine has been properly maintained.It’s not recommended to drive with a bad timing chain, as it can cause severe engine damage.Why the N47 Timing Chain Is a Weak Point. The timing chain on the N47 is located at the back of the engine, which makes access difficult. This also means that small issues often go undiagnosed until serious damage occurs.
How to know if a BMW timing chain is bad?
Rough Idling: Does your BMW shake more than usual when starting up? This could be a sign of a worn timing chain struggling to maintain proper engine timing. Unusual Noises: A loud rattling sound, particularly from idle on a cold engine could indicate a loose timing chain catching on other nearby components. Common Symptoms of BMW N47 Timing Chain Problems The rattle is typically caused by a stretched chain, worn guides, or a failing tensioner. Many drivers mistake it for something harmless, but this sound is the chain slapping the casing or gears—an early warning sign that shouldn’t be ignored.
Are BMW timing chains lifetime?
BMW timing chains are designed to last the lifetime of the engine under ideal conditions. However, factors such as oil quality, service intervals, driving habits, and specific engine designs can significantly influence longevity, with some chains requiring attention earlier than expected. BMW has built a reputation for performance and engineering excellence, but certain models, including the BMW X1 (2013–2015), BMW X3 (2013–2017), and BMW 3 Series (2012–2015), have been known to experience timing chain issues—especially in vehicles equipped with the N20 engine.BMW TIMING CHAIN FAILURE A range of BMW diesel engines produced between 2006 and 2015 appear to have a design problem affecting the timing chain. The timing chain is located at the rear of the engine bay and is not intended to be a serviceable part. It is very weak – it stretches over time, and ultimately snaps.