N54 vs. N55: Single vs. Twin Turbochargers. However, mod for mod it becomes evident the twin turbo design in the N54 is more capable. The heat management module on the B58 is mechanically powered directly by the crankshaft through a serpentine belt. This is in place of the air-to-air intercooler found on the N54/N55. However, to deal with the situation that the turbo still needs to be cooled after engine is turned off, an extra dedicated electric pump is added to the turbo unit to tackle this issue. This is in place of the air-to-air intercooler found on the N54/N55. So, for those 340i owners that are out of warranty, please pray that the VANOS system does not break. Outside of this over blown issue, the S55 appears to be a bulletproof engine. Make sure to subscribe to our newsletter and be the first to know the news. The cylinder walls of the B58 engine are coated with electric arc wire spray (LDS). The N54 engine has forged internals, meaning it can handle an immense amount of power without requiring any expensive engine modifications. The closed block design is stronger, but it is heavier, more expensive and restricts coolant flow requiring upgraded coolant system. Valvetronic used on the N55 is the 3rd generation, and the one that on the B58 … The twin-turbo setup on the N54 does offer better performance when modified compared to the N55. upgrades. Inside the module, coolant flow rate is adjusted by a rotary valve. Normally, we look at what has remained the same Now utilizes an air-to-liquid intercooler integrated into the intake plenum. VANOS is responsible for timing adjustment, and Valvetronic is used for control the lift height of the valves and acts as the throttle body. We can see these consistent, but often conflicting, goals in engine designs from VW/Audi and their MQB platform, to Jaguar’s Ingenium engines to BMW’s new B-Series engines. BMW’s latest engine release is designated as the B58 engine in the 6-cylinder version. While this list is not all inclusive we will do our best to point out the significant changes. Since there will be noises when the timing chain is operating, BMW placed a sound insulation foam between the cylinder head/valvetrain cover and the passenger cabin firewall. 2020 Alex's Autohaus. This is good for the weight distribution, however with the price of maintenance difficulty and cost. The new B-Series platform is designed to work in 3-, 4- and 6-cylinder variants. Alex’s Autohaus offers all customers the Bosch and Tech-Net Peace of Mind Nationwide Warranty. The mechanical coolant pump avoided the hassle of possible failure of the electric type in previous BMW engines. BMW put a focus on engine weight distribution. Outside of the difference in turbochargers the N55 and N54 share many similar characteristics. Valvetronic used on the N55 is the 3rd generation, and the one that on the B58 is the latest 4th generation. Dedicated to making Supercars look slow, Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window). However, the VANOS system is a huge pain for maintenance since it is located right behind the engine and extremely closed to the firewall. Increased power and torque without sacrificing fuel economy, Improved comfort in the passenger compartment, Engine displacement has increased from 2,979 cc to 2,998 cc. Your email address will not be published. BMW N55 Specs. Dedicated to making Supercars look slow, Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window). Interchangeability of parts for all displacement and geographic region versions. All rights reserved. Monday - Friday: 8am - 5:30pm. engine the list is quite small. https://www.vr-speed.com/vrsf-3-stainless-steel-catless-downpipes-n54-07-10-bmw-335i-08-10-bmw-135i.html/ref/31/, http://www.e90post.com/forums/showthread.php?t=1096242, http://www.n54tech.com/forums/showthread.php?t=29236, https://play.google.com/store/apps/details?id=com.mhd.flasher.n54&hl=en, https://www.bmwn55tuning.com/how-to-build-a-400whp-n55-for-under-1500/, https://www.n54tech.com/forums/showthread.php?p=302070, https://bmwsparkplugs.com/collections/n54/products/n54-1-step-colder-spark-plugs, BMW X5 Reliability, Problems, & Driving Experience, BMW B58 Water Methanol Injection (WMI) Guide, BMW N54 Water Methanol Injection (WMI) Guide, Tuning Pro – Automotive Tuning & Performance Guides. Some people call it the ‘2JZ’ of German engines, but we think the N54 is on a whole new level. Simply put, the N54 moves more air and will outperform an N55 mod-for-mod. VANOS is responsible for timing adjustment, and Valvetronic is used for control the lift height of the valves and acts as the throttle body. Introduction of a heat management module to cope with the higher temperatures seen in this engine. Stock Power: 300 HP This is driven by a bore that is smaller by 2mm (now 82mm) and a stroke that is 5mm longer (now 94.6mm), Compression ratio increase to 11.0:1 from 10.2:1, Crankshaft is forged compared to the cast in the N55, Drop-forged, cracked connecting rods with IROK coated bearings to cope with the demands of start/stop operation and the wear caused on initial startup due to loss of oil flow. However, we are all a bit spoiled and don’t want to give up any power. BMW X5 Reliability, Problems, & Driving Experience, BMW B58 Water Methanol Injection (WMI) Guide, BMW N54 Water Methanol Injection (WMI) Guide, Tuning Pro – Automotive Tuning & Performance Guides. Regardless of what BMW On the N54/55 engine, they placed the alternator, AC compressor, timing chain and engine oil filter assembly towards the front portion of the engine, therefore the engine’s center of gravity center to be front-biased. 7470 S. State St | Midvale UT 84047 Our 36,000 mile warranty is the best in the business! A twin-scroll turbocharger is a single turbo where the exhaust housing of the turbocharger is split into 2 “scrolls”. Engine block now uses a closed deck block design from the open design found on the N54/N55. Let’s examine what is new with the BMW B58 engine and what the differences are between the N55 and B58 engines. The twin-scroll setup allows the N55 to deliver peak torque 100rpm sooner than the N54, but that difference is hardly noticeable in the real world. always here to help you with BMW repairs, maintenance and performance The single turbo in the N55 is a larger turbocharger which produces the same power as the N54, stock for stock. However, it copes with higher cylinder pressures better especially important since the bones of the block will be shared with diesel platforms. The N54 features a true twin turbo setup while the N55 receives a single twin-scroll turbo. Your email address will not be published. you. The BMW N54 engine featured in the 135i, 335i, and 535i is one of the most tune-able engines ever. Give us a call at (801) 566-6115 to discuss what we can do for Privacy Policy, The Ultimate Volkswagen/Audi Stage Tuning Guide (2020), Common Problems with the Volkswagen MK7 GTI, Timing Chain Tensioner and Chain Issues for 2.0T TSI VW and Audi Models, Luxury European Auto Service in Salt Lake, Direct-injected Bosch fuel injector (HDEV5.2) is carried over from the one used on the N55, Single twin scroll turbo is retained, but is now integrated into the exhaust manifold, Bulk of the crankcase ventilation system is incorporated into the valve cover, Other than that these are internal combustion engines with an inline-6 cylinder orientation the design elements of each start to depart pretty significantly, Reduction and optimization of internal and external engine weight, Internal engine friction reduction and improved thermal management. This layer of ferrous material is roughly .3mm thick, extremely wear-resistant and facilitates an efficient transfer of heat from the combustion chambers to the crankcase, and from there to the coolant ducts. BMW has also stressed temperature management in the B58, more so than in the N55. Such design brings two major advantages: (1) it significantly reduced the installation space; (2) It brings down the engine’s total height and lowers the engine’s center of gravity. There is no fundamental change in the working principle, the major difference in the B58’s Valvetronic system is it moves the servo motor out of the valve cover (which is N55’s design), and places it outside at the top right-hand side of the cylinder head. Elimination of iron cylinder sleeves. Each 3 cylinders on the same firing … Learn more about our employment opportunities here. However; the B58 treats this differently: it places the oil filter and its radiator, VANOS timing chain to the back of the engine. On this engine you have under the hood, remember at Alex’s Autohaus we are The B58 engine will replace the N55 engine throughout their vehicle lineup. In this procedure a conductive metal wire is heated until it melts. The simple answer is tougher fuel economy and emission standards globally. It is impossible to service the VANOS system without taking the whole engine out of the engine bay. between new and old engines. Arguably, the most significant difference between the N54 and N55 is the turbochargers; the N54 bolsters true twin turbochargers while its N55 counterpart carries a single twin-scroll turbocharger. Alex’s Autohaus is a top quality auto repair and maintenance shop specializing in exotic auto repair and European auto repair in Midvale, UT. The melt is then sprayed on the cylinder barrels at high pressure. The 36 month/36,000 mile warranty is honored at over 10,000 service centers across the country. The S55 crank hub is the same design as used on the N54 and N55, and while it can and has failed on stock S55’s, it is a highly isolated problem which was improved by BMW in 2016. The new B58 engine uses a water-to-air intercooler integrated … The first principle we need to understand with all new engine designs is to first understand what is driving the changes. BMW N54 vs N55 One of the most notable differences are the turbochargers. We are committed to providing Salt Lake City and the surrounding areas with the best and most reliable auto repair. Although the oil filter cap is hiding a little bit deep in the engine bay, it is still not too hard to reach.
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