I am trying to decide if I should go in for a preventative timing chain replacement using the updated ones post 2015. Mine is a 2012 model and 58k mileage. A timebomb as I understand it. 323 posts · Joined 2003. #2 · Mar 8, 2017. There have been failures of the timing chain guide reported for the N20 engine that resulted in catastrophic engine damage. BMW introduced a redesigned timing chain guide in about January 2015 for the N20 engine. Your 2014 X3 28i will have the original design timing chain guide, if this was not replaced. Quick Answer: About 4 to 6 Hours. The harsh truth about how long it takes to replace a timing belt is that it’s a long, cumbersome process. Due to the intricacy involved in getting such an operation done, a typical timing belt replacement will usually take between 4 and 6 hours to complete. This might change depending on your car and your October 14, 2022 by Carolina. A broken timing chain will cause an engine to not start or fail while driving. If the belt is already broken, the engine won’t have enough compression to start. If it breaks or jumps while driving, the pistons will be damaged from contact with the valves. The valves themselves will bend and potentially ruin the The BMW X1 with the highest likelihood of timing chain issues is the E84 generation equipped with the N47 diesel engine, produced between 2007 and 2011. This includes the X1 20d, X1 23d, and X1 25d. In October 2016, BMW officially acknowledged these issues with a recall. For all other BMW X1 models, it’s safe to say that the overall failure Normally the timing chain kit can last to 80,000-100,000 miles without any problems. However, due to the design flaws cause the potential timing chain tensioner problem, we’ll highly recommend the car owners to replace the N47 engine timing chain set periodically. A: Back in 1979, there was a law that mandated that speedometers only read up to 85 miles per hour to, in theory, lessen the number of people who speed.The law was repealed a few years later. My When BMW Mini introduced the N18 engine in 2010, we all breathed a sigh of relief. It’s forerunner, the N14 engine, was notoriously prone to timing chain tensioner failures. So much so that, at one point, our workshop had four Minis lined up for replacement timing chains – and we had four customers with costly repair bills. So when the BMW use timing chains in almost every model of engine that they produce. It is recommended to replace your timing chain before failure as repair prices can become very high from internal engine damage if left. The average life of these timing chains is 90,000 miles or 9 years. The 1.9 has a timing chain with a belt for accessories (water pump, PS, alternator) and a AC Belt. Z3 - S50 - OBD2 - Smog Legal - 6 Speed - 3.46 - Anthracite 03-06-2007, 12:05 PM #23 fOnlcS.