N54 was also BMW's first production turbocharged engine in decades. The BMW B58 are awesome to work on and with carefully picked performance enhancements like remapping, turbo improvements and camshafts you will positively maximise your driving opportunities. bootmod3 closed beta for the B58 engines has been a great success and we're excited to ⦠BMW F and G series vehicles - 140i 240i 340i 440i 540i 640i 740i M140i M240i X3 M40i. In another word: people wanted higher engine output. bootmod3 for BMW B58 Engine Vehicles Now Available! On the N54/55 engine, they place the alternator, AC compressor, timing chain and engine oil filter assembly towards the front portion of the engine, therefore the engine’s gravity center tends to be front-biased. So far so good, still breaking it in so I can’t compare power yet but I can say the 340i sounds better. It was featured in a handful of different vehicles, but ultimately it was officially phased out for the N55 in 2011, except for the 1M and Z4 35i. Starting then, BMW was under huge peer pressure, below is the timeline overview: You can see, this is quite embarrassing for BMW 330i: Toyota 2GR-FSE not only has absolute advantage regarding horsepower output, but it also accomplished a big achievement in torque performance : 277 lb-ft from 3.5L displacement, which translates to more than 79 lb-ft per liter. The latest B58 engine is totally different than the N54 and N55. They had an n55 which was reasonably reliable and b58 looks like it has many kinks on the n55 worked out. Along with the new BMW 3 Series Facelift and the G11 7 Series, the Bavarian manufacturer launched its latest 3-liter inline 6-cylinder petrol mill in the shape of the B58 engine. Tuning the BMW B58 "Comprehensive guide to tuning the BMW B58 engine!" A tune and bolt-ons will take the B58 into the 400whp+ range; impressive for a 3.0L engine, but nothing crazy compared to BMWâs other inline-6 turbo engines. However the B58 treats this differently: it places the oil filter and its radiator, VANOS timing chain to the back of the engine. The B58’s cylinder block is closed deck; while N54/55 are open-deck; B58 is using air-to-liquid intercooler, compared to N54/55’s air-to-air intercooler. That will be an engine drop job. Are there any common reliability problems such as the N55 plastic charge pipe that fails? By nature, closed deck cylinder block is much stronger than the open deck type, therefore it is more suitable for high load and high pressure application. Also, what is the actual boost pressure on the M40i version of the B58? In one word: closed deck design and also the air-to-liquid intercooler, determines B58 is fundamentally different from its N54/N55 predecessors. Both have what looks like coolant in them. For example it carries a higher manufacturing cost; Also the coolant flow is more restricted, which prompts BMW to use a dedicated heat management module on the B58 engine. Compared to the 2GR-FSE, the highest tune BMW N53 only gets 236 lb-ft from the 3.0L displacement, which is 78.7 lb-ft/L. Thanks for the detailed description of the engine. The BMW B58 is a turbocharged inline-six engine which began production in 2015. Many of you already know that the Toyota Supra comes with a choice of two BMW-sourced engines. A reliability score of 52 (out of a scale from zero to 100 points) earned BMW a mid-pack ranking in a list which remains dominated by Japanese manufacturers such as Toyota and Lexus, which scored 74 and 71 points respectively, and ⦠Toyota helped BMW with the development of the B58, however, the B58 features a lot of modern technologies which arenât exactly super reliable. Thank you for a well written article, a rare find theese days. The first auto maker that started the “power war” in the affordable pricing sector is Nissan – it released the Infiniti I35 in late 2001, equipped with the VQ35DE V6 engine which passed the 250 hp mark for the first time within entry-level luxury cars. Certain G series models began receiving the updated B58TU1 in 2019. Initial view is that the B58 is the more refined unit – the N55 was more fun and punchier. The engine block is identical to the diesel B57. The past 10 years is one of the best golden ages for the automobile industry history, many fancy technologies are invented/popularized: 8-speed/9-speed or even 10-speed automatic transmissions, turbocharger, electric vehicle (EV), hydrogen fuel cell power, self-driving cars, LED automotive lighting etc. With that being said, the B58’s closed deck design seems to cost BMW more to build. The B58 replaced the N55 and was launched in the F30 340i. The B58 replaced the N55 and was launched in the F30 340i. Inside the module, coolant flow rate is adjusted by a rotary valve. The motor is similar to the S55 engine found in the latest generation F8x M3/M4 (and new M2 competition) in that it has an indirect water-to-air charge cooling system with a supplemental front mount heat exchanger to cool the water that circulates through the ⦠The BMW B58 is a turbocharged straight-six engine, which began production in 2015. However, from the holistic view it is another story: B58 is not a single product, in fact it is a member of BMW’s latest B-series engine family. Torque per liter is a very important index for naturally aspirated (NA) engine, because it is directly related to the engine’s volumetric efficiency, which represents the auto maker’s R&D capability. The B58 is part of BMWâs new modular engine design. Our focus of the 340i is mainly on BMW’s all-new B58 engine. Among these, BMW has used its turbocharge engine technology to start a whole new page, from the ground-breaking N54 and the later N55, N63, N20 etc., to the latest and greatest B-series engine family (B37/38, B47/48, B57/58). The air-to-water intercooler on B58 is integrated into the intake plenum, which is on top of the engine and sits beneath the cylinder head. Also if you're used to doing your own oil service, the filter housing is towards the back of the engine. It has true performance oriented design, while the previous N54/55 have limited potential which prevents them from taking higher loads. Compared to the unit on N55, the B58 turbocharger has a 6% larger turbine, and the compressor wheel diameter is also 10% larger, therefore the B58 gains 20% in boost pressure. Therefore, BMW uses a so-call “heat management module” on the B58, which is mechanically powered directly by the crankshaft through a serpentine belt. The B58 is still using the solenoid valve injectors, not the more expensive piezo unit found in the earlier N54 and the current N63 engine. From our 2016 340i test drive, the B58 powertrain provides unprecedented quick throttle response, the feel of turbo lag is so faint that it is almost impossible to be perceived in daily driving conditions – you have to use transmission’s manual mode to detect it. Please tell me your opinions of your B58 engine? * Closed-deck engine block and BMW uses the same block for both gas and diesel variants plus the cooling/lubrication passages are the same design so costs are saved when casting ⦠Introduction . Recommend Reading: Technical Analysis – The All-New 2017 BMW 5-Series (G30). The benefit is less pressure loss (the longer the path the greater the loss) and slightly faster and accurate pressure control. This is good for the weight distribution, however with the price of maintenance difficulty. Recently, German automotive media outlet BimmerToday released details of the newest alterations and adjustments to the design of the updated B58, and theyâre quite substantial. Dieselâs donât have short strokes. Automotive petrol engines. This type of info is really difficult to come by, it gets weighed down by all of the BS, speculative forum posts. “TwinPower Turbo” which is a twin scroll single turbo, The 3 Most Common BMW M60 Engine Problems, BMW B46/B48 Intercooler & Heat Exchanger Guide, Tuning Pro – Automotive Tuning & Performance Guides. When B58 is through the 1200 mile mark I’ll give it the beans and report back. April 03, 2019 / By Srdjan Bajat. The purpose of such geometry design is not for lower-end torque, but with consideration in packaging. The B58 engine will replace the N55 engine throughout their vehicle lineup. Where the 2JZ was a relatively simple engine, the B58 is quite a bit more complicated, and ultimately probably wonât be as reliable in the long-term. As mentioned above, the B58’s closed deck cylinder causes more restricted coolant flow, and it raises a tougher requirement for the engine cooling system. Too early to tell but given the timing chain class action on the N20 and the service campaign on the N63, one can hope that BMW (and Land Rover & Mercedes Benz among others) have learned a lesson. For me, that means wait… Guilty until proven innocent…. The ultimate goal is to save weight. 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. how do you like it? However because of the high heat generated from the turbocharger, on 340i’s application, BMW places a heat shield around the electrical actuator component. The B58 engine can be found on the US versions of the M340i, Z4 M40i, X3 M40i and X4 M40i. The clutch on the 335i (DCT) is way the best. Here we have the two most discussed and bought 3-liter straight six petrol mills BMW produced in the last 10 years. B46 engine in the BMW 330i came within a hair of joining its B58 big brother on the list this year. Had BMW used a shorter stroke, in order to maintain the same displacement, its cylinder bore need to be much larger. This is exactly the same for the B58. What’s more, a longer crankshaft (caused by long block) is weaker too. On N55 the ECU is located under the intake plenum and therefore, cooled by the intake air. I believe the one with the large cap is the engine block/radiator reservoir. The throttle body’s purposes are: (1) when there is a sudden load change, the Valvetronic mechanism may not react fast enough to adapt to the new operation requirements; the throttle valve can help to provide a seamless transition; (2) a slight vacuum is needed for the engine ventilation; (3) the throttle body acts as a redundant backup in case the Valvetronic malfunctions. On top of the fundamental level enhancements mentioned above, B58 also incorporates many remarkable new designs. As the successor of the BMW N55 engine, the B58 also displaces 3.0 litre (though is slightly larger at 2998cc compared to 2979cc for the N55). Because of the tight schedule, there were some aspects that BMW later found can be done better. You may also find most of the BMW inline six engines are all undersquare, and this is exactly the same on B58 too. So I have the same question as Jim K. : What is the purpose of the second cooling system? The mechanical coolant pump avoided the hassle of possible failure of the electric type in previous BMW engines. Is the new engine in the 2021 BMW M4 reliable? The more common inline-four and V8 layouts are also produced by BMW, and at times the company has produced inline-three, V10 and V12 engines. 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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