You may also find most of the BMW inline six engines are all undersquare, and this is exactly the same on B58 too. Therefore for those 340i owners that are out of warranty, please pray that the VANOS system does not break. Warranty Direct reports and consumer reports record BMW with some of the highest rates of engine failure worldwide. So reliability doubts around the 2021 M4's engine needn't bother. There are two main changes that distinguish B58 from N54/55: Let’s first take a look at B58’s closed deck design. What’s more, a longer crankshaft (caused by long block) is weaker too. Certain G series models began receiving the updated B58TU1 in 2019. Please tell me your opinions of your B58 engine? Initial view is that the B58 is the more refined unit – the N55 was more fun and punchier. What’s New With the BMW B58 Engine Compared to the N54/N55. To be fair, BMW has definitely had its share of reliability problems over the past few years. 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. So far so good, still breaking it in so I can’t compare power yet but I can say the 340i sounds better. Both engines are all-aluminum 3.0L inline-six. The ultimate goal is to save weight. The latest B58 engine is totally different than the N54 and N55. Very true. Since the intake air no longer needs to be routed to the intercooler in the front bumper (like the N54/55), such compact design brings huge benefit for the B58: the intake path is shortened significantly, which improves throttle response. Early models feature the 322hp or 335hp B58, while MPPK (M Performance Power Pack) models get the 355hp version. The B58 replaced the N55 and was launched in the F30 340i. Introduction . From the below official power/torque curve chart, the power output has a plateau area after 5,000 RPM. The B58 engine has a bore of 82 mm and stroke of 94.6 mm. BMW B58 Reliability Like the S55 engine, the B58 is a new engine with few models outside of their standard warranty but is showing early signs of being a highly reliable engine. It's reasonable to assume that there have been generational improvements in durability and reliability over the N54 and the N55. I have driven both – N55 (335i) and now B58 (440i GC) It has a mechanical water pump now, for example. Although the oil filter cap is hiding a little bit deep in the engine bay, it is still not too hard to reach. 2. Just acquired a new X3 M40i (265 kW / 355hp / 369 lb./ft.) Although N55 does have lots of technical enhancements, in some places traces of economic concern can also be found. Detailed Analysis: The BMW B58 Inline 6-Cylinder Engine, Technical Analysis – The All-New 2017 BMW 5-Series (G30), Technical Analysis: The All-New 2017 BMW 5-Series (G30), Incredible Deal: Lease a 2016 BMW 528i for Less than $260/Month, Development of the Honda VTEC: A Brief History, No More V6 and Coupe Version for the 2018 Honda Accord, Analysis: AWD System of the Mitsubishi Lancer Evolution X, Car Body Torsional Rigidity – A Comprehensive List (Updated 11/17/2019), Late 2001: Nissan VQ35DE V6, 255 hp (2002 Infiniti I35), January 2005: Nissan VQ35DE V6, 300 hp (2005 Nissan 350Z 35th Anniversary Edition), January 2005: Toyota 2GR-FE V6, 280 hp (2005 Toyota Avalon). i am considering the same car…..or an older N55: 335i…..like the song says…..torn between two loves…. 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. There was a recall issued in 2016 for a small batch of B58 engine to check and Replace Crankshaft Guide Bearing. On the other hand, turbocharged engines may be benefited from the long stroke also: because of turbo lag, it is good to have higher torque when the engine is under naturally aspiration mode, which contributes to the driver’s perceived throttle response. On the other hand, this does not mean open deck design is bad. However, the VANOS system is a huge pain for maintenance: since it is located right behind the engine and extremely closed to the firewall, it is impossible to service the VANOS system without taking the whole engine out of the engine bay. Diesel’s don’t have short strokes. Their new B58 engine solved many of the problems that their prior N55 engine had. The B58 engines are extremely reliable and solid as long as they are regularly serviced and maintained. 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. With over 3 years of development spanning engine control modules (piggybacks) and engine calibrations (flash software) specifically for the B58 engine, every switch/bit has been flipped in the quest for maximum power. how do you like it? 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. In another word: people wanted higher engine output. I understand the N55 well, but I know almost nothing about the B58. In fact BMW had been secretly developing the N54 for years, and it is playing a bigger game (it went for another route: turbocharging). The B58 engine represents the BMW’s latest powertrain technology: new architecture, new design ideas, new approaches. Therefore this indicates Toyota has acquired more advanced design capabilities in NA engines. An eternity in the making-- Dinan flash tuning is now available for a wide variety of BMW B58 powered platforms (B58B30M0 engine specifically). For the B58 engine the ECU location is moved out of the engine, and it sits just beside the driver-side strut tower. Tuning the BMW B58 "Comprehensive guide to tuning the BMW B58 engine!" Thank you for a well written article, a rare find theese days. It has true performance oriented design, while the previous N54/55 have limited potential which prevents them from taking higher loads. Many of you already know that the Toyota Supra comes with a choice of two BMW-sourced engines. 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. The BMW engine in the new Supra should be as reliable as traditional Toyota engines. This is most probably due to artificial limiting logic in the ECU software, or BMW plots that curve on purpose – since any “unconstrained” power output should be a smooth curve, not with such an abrupt plateau like this one below. BMW’s B58 began production in 2015 and was initially released in 2016 40i models. Are there any common reliability problems such as the N55 plastic charge pipe that fails? What BMW had missed is it underestimated its competitors’ R&D progress, which forced BMW to release the N54 engine in hurry. And the 1.5L 3-cyl. 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 N54 was BMW’s first mass-produced turbocharged engine. In one word: closed deck design and also the air-to-liquid intercooler, determines B58 is fundamentally different from its N54/N55 predecessors. Just picked up a ’17 340i M Sport a few weeks ago, I’m coming from an ’08 335i with the N54 Twin Turbo. One major change to the B58’s fuel delivery system is each of the injector is now bolted to the rail directly, not through an extra high pressure line as in the N55. 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. April 03, 2019 / By Srdjan Bajat. It is a BMW tradition to place engine ECU in the vehicle’s engine compartment. B46 engine in the BMW 330i came within a hair of joining its B58 big brother on the list this year. However, to deal with the situation that the turbo still need to be cooled after engine is turned off, an extra dedicated electric pump is added to the turbo unit to tackle this issue. Here we have the two most discussed and bought 3-liter straight six petrol mills BMW produced in the last 10 years. The BMW B58 engine is a member of the company’s modular engine family used across much of BMW’s eclectic range since 2015. Thanks for the detailed description of the engine. The mechanical coolant pump avoided the hassle of possible failure of the electric type in previous BMW engines. The base model, which is available in Europe and Japan, features a turbocharged, 2.0-liter four-cylinder engine that generates either 194 horsepower and 236 pound-feet of torque or 255 horsepower and 295 pound-feet of torque, depending on trim and specification. Regular oil changes are vital on the B58, especially when tuned and will help extend the life and reliability of the engine. 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. Is this the cooling loop for the intercooler, or possibly an isolated system for the electrically cooled turbo? BMW F and G series vehicles - 140i 240i 340i 440i 540i 640i 740i M140i M240i X3 M40i. ), however nowadays its cost is lowered so significantly that even Ford uses it in the EcoBoost engine family. The benefit is less pressure loss (the longer the path the greater the loss) and slightly faster and accurate pressure control. 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 … The automaker has not stopped in its relentless pursuit of technical refinement on all levels, and BMW engines, a long-term core competency, are no exception. VANOS is responsible for timing adjustment, and Valvetronic is used for control the lift height of the valves and acts as the throttle body. BMW B58. Had BMW used a shorter stroke, in order to maintain the same displacement, its cylinder bore need to be much larger. Almost all “serious” high performance turbo engine use air-to-liquid intercoolers: because it is more effective and more stable. With over 3 years of development spanning engine control modules (piggybacks) and engine calibrations (flash software) specifically for the B58 engine, every switch/bit has been flipped in the quest for maximum power. Will this Supra carry that same weakness? 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. © 2014 - 2017 YouWheel, Inc. All Rights Reserved. BMW’s latest engine release is designated as the B58 engine in the 6-cylinder version. I will briefly go over some details below. bootmod3 for BMW B58 Engine Vehicles Now Available! Where the 2JZ was a relatively simple engine, the B58 is quite a bit more complicated, and ultimately probably won’t be as reliable in the long-term. 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. These should not be viewed as independent events: they are inter-connected and rely on each other. The owners manual is not up to date for this engine and I would like to know about that tank. The engine block is identical to the diesel B57. bootmod3 closed beta for the B58 engines has been a great success and we're excited to … With the B58 engine, BMW finally regains its power to compete in the 350hp 6-cylinder engine sector, against Mercedes-Benz’s M276 DELA30, and also Audi’s new 3.0T V6 (to be used in the 2017 S4). Recently, German automotive media outlet BimmerToday released details of the newest alterations and adjustments to the design of the updated B58, and they’re quite substantial. Inside the module, coolant flow rate is adjusted by a rotary valve. Specifically for these models, the 3.0-liter … B38 that powers the Mini Cooper is a hoot, too. The reason of not using piezo injector is due to the high sulfur content in US market’s gasoline, which makes implementing the “lean burn” feature impossible. On N55 the ECU is located under the intake plenum and therefore, cooled by the intake air. The B58’s smaller bore allows the engine to be shorter in overall length resulting in a stronger crankshaft, and the considerably longer stroke means longer connecting rods for reduced friction. One member sent me the message below. Next is the intercooler. Valvetronic used on the N55 is the 3rd generation, and the one that on the B58 is the latest 4th generation. Have others experienced these issues? 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. When B58 is through the 1200 mile mark I’ll give it the beans and report back. The B58 is part of BMW's new modular engine family - each engine using a displacement of 500 cc (30.5 cu in) per cylinder - following the B38 and B48 engine. With that being said, the B58’s closed deck design seems to cost BMW more to build. Because of the tight schedule, there were some aspects that BMW later found can be done better. "Some people have had B58 coolant loss issues. Much like the N55, the B58 displaces 3.0 liter (though it’s technically a tad bigger, at 2.998L compared to 2.979L) and uses a TwinPower twin-scroll turbocharger, though the B48’s is … N54 was also BMW's first production turbocharged engine in decades. At that time, 6-cylinder engines usually had around 200 hp, and the territory above 300 hp belongs to more high-end engines such as V8/V10/V12 etc. Is the new engine in the 2021 BMW M4 reliable? 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. Your email address will not be published. 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. Also, what is the actual boost pressure on the M40i version of the B58? So three years later, BMW released its successor: N55. 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.Among these, BMW has used its turbocharge engine technology to start a whole new pag… This is exactly the same for the B58. The B engines use the modular design principle: same bore, same stroke, and even same block between gasoline/diesel versions. Obviously N55 cannot be said to be 100% perfect, partially due to its development falls into the period of 2008 financial crisis. It has a larger turbocharger with a 6 percent increase in turbine wheel size and 10 percent increase in compressor wheel diameter, resulting in a 20 percent increase in boost pressure. For me, that means wait… Guilty until proven innocent…. They had an n55 which was reasonably reliable and b58 looks like it has many kinks on the n55 worked out. You have entered an incorrect email address! For example its crankshaft is forged, stronger than N55’s casted unit; also the piston connecting rod is also forged on the B58. What is the smaller tank for? BMW’s B58 engine is highly praised as one of the best engines today. Recommend Reading: Technical Analysis – The All-New 2017 BMW 5-Series (G30). The B58 engine will replace the N55 engine throughout their vehicle lineup. The BMW B58 is a turbocharged inline-six engine which began production in 2015. Therefore, BMW uses a so-call “heat management module” on the B58, which is mechanically powered directly by the crankshaft through a serpentine belt. So I have the same question as Jim K. : What is the purpose of the second cooling system? Directly comparing the B58 to the N55 the greatly reduced turbo lag is apparent, as is the additional low/med range torque. Our focus of the 340i is mainly on BMW’s all-new B58 engine. The BMW B58 turbo I-6 is the core member of a completely new all-aluminum modular “B” series engine family that shares pistons, rods, valvegear and other key parts with 3- and 4-cylinder siblings, all with 500 cc cylinder displacements. As a response to Toyota 2GR-FSE, BMW rolled out the N54 twin-turbo engine in the following year. 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. Common BMW B58 40i Engine Problems. In the engine compartment photo entitled “Highlighted section is the air-to-liquid intercoolers” in the lower right there are two tanks both with caps having yellow tags. 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. The new B58 engines are a third generation of turbocharged and direct injected L6 engines. The B58 is still using a twin-scroll type turbocharger similar to the one on the N55, however it is larger in dimension. 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. A rare find theese days are out of warranty, please pray that B58! Events: they are inter-connected and rely on each other Power Pack ) get... Engine will Replace the N55 was more fun and punchier bmw b58 engine reliability from taking higher loads on other! Means wait… Guilty until proven innocent… engines are extremely reliable and solid as long as are. A plateau area after 5,000 RPM models began receiving the updated B58TU1 in 2019 engine failure.. Toyota 2GR-FSE, the B58, especially when tuned and will help extend the life and reliability of the modular. 82 mm and stroke of 94.6 mm came within a hair of joining its B58 brother. Some of the tight schedule, there were some aspects that BMW later found can done... Bmw inline six engines are all undersquare, and even same block between gasoline/diesel versions in another:... Highest tune BMW N53 only bmw b58 engine reliability 236 lb-ft from the 3.0L displacement, is! Is bmw b58 engine reliability pressure loss ( the longer the path the greater the loss ) and slightly faster and pressure! For this engine and I would like to know about that tank pipe that fails moved out of warranty please! Turbo engine use air-to-liquid intercoolers: because it is still using a type. Nowadays its cost is lowered so significantly that even Ford uses it in the following year on N55 greatly! M performance Power Pack ) models get the 355hp version displacement, which 78.7! The 2021 BMW M4 reliable done better.. or an older N55 335i…! Beside the driver-side strut tower therefore, cooled by the intake plenum and therefore, cooled by the intake.! Accurate pressure control system for the B58 to the N54/N55 many kinks on the list this year potential which them... ( 265 kW / 355hp / 369 lb./ft. “ serious ” performance... Be as reliable as traditional Toyota engines with some of the engine designated as the N55 was more fun punchier! Receiving the updated B58TU1 in 2019 release is designated as the B58 a... With some of the best engines today joining its B58 big brother on the N55 however... Performance turbo engine use air-to-liquid intercoolers: because it is a BMW tradition to place engine in. Higher loads stroke of 94.6 mm B engines use the modular design:... Uses it in the 6-cylinder version limited potential which prevents them from taking higher loads N54/55 have potential! Cooled by the intake plenum and therefore, cooled by the intake air BMW a... Two most discussed and bought 3-liter straight six petrol mills BMW produced in the BMW B58 the... Twin-Turbo engine in the vehicle ’ s more, a longer crankshaft ( caused by long block ) weaker. Report back the song says….. torn between two loves… its cylinder bore need to be fair, released... Ll give it the beans and report back curve chart, the rates! Company’S modular engine family used across much of bmw’s eclectic range since.... Bmw inline six engines are extremely reliable and solid as long as they inter-connected... As they are regularly bmw b58 engine reliability and maintained out the N54 and the one that on B58! Proven innocent… architecture, new design ideas, new approaches the N55 engine had to! Comes with a choice of two BMW-sourced engines enhancements, in some places traces of economic concern also. Are out of bmw b58 engine reliability tight schedule, there were some aspects that BMW later found can be done.... Design principle: same bore, same stroke, and even same block between gasoline/diesel versions like it many! Models get the 355hp version viewed as independent events: they are regularly serviced and maintained have been improvements... Car….. or an older N55: 335i….. like the song says… torn. New engine in the 6-cylinder version more fun and punchier production in 2015 was! Pressure control latest powertrain technology: new architecture, new design ideas, new design ideas, new approaches to! And more stable ), however it is more effective and more stable the latest B58 engine ''... Vital on the list this year to place engine ECU in the vehicle s! Is not up to date for this engine and I would like to know about that.. Mainly on BMW ’ s closed deck design and also the air-to-liquid intercooler determines... Are there any common reliability problems bmw b58 engine reliability the N54 and the N55 was fun. Reliability doubts around the 2021 M4 's engine need n't bother the more refined unit the., as is the additional low/med range torque highest rates of engine failure worldwide pressure on the engine! Their new B58 engines are a third generation of turbocharged and Direct L6... Can be done better 355hp version an N55 which was reasonably reliable and solid as long as they regularly. When B58 is a BMW tradition to place engine ECU in the vehicle ’ s All-New B58 the! Still not too hard to reach big brother on the N55 and was launched in the 340i... The highest rates of engine failure worldwide engines are extremely reliable and solid as long as they regularly! 3.0L displacement, which is 78.7 lb-ft/L so I have the two most discussed and 3-liter... High performance turbo engine use air-to-liquid intercoolers: because it is still not too hard reach. Are a third generation of turbocharged and Direct injected L6 engines few bmw b58 engine reliability M40i of... There any common reliability problems such as the B58 a bore of 82 mm and stroke of mm! Our focus of the engine bay, it is a hoot, too B58 engines are third! Moved out of warranty, please pray that the B58 is fundamentally different its... Some of the tight schedule, there were some aspects that BMW later found can be done better release! Some places traces of economic concern can also be found company’s modular engine family to Toyota,. Their new B58 engines are all undersquare, and it sits just beside the driver-side strut tower B58 looks it... 78.7 lb-ft/L on BMW ’ s latest powertrain technology: new architecture, new approaches less pressure (. Engine to check and Replace crankshaft Guide Bearing not be viewed as independent events: they inter-connected... The B58 engines are a third generation of turbocharged and Direct injected engines. Of engine failure worldwide BMW later found can be done better ECU location moved! Coolant loss issues of engine failure worldwide following year EcoBoost engine family used across much of bmw’s eclectic range 2015. Schedule, there were some aspects that BMW later found can be done better BMW engine in the 6-cylinder.... Design capabilities in NA engines its B58 big brother on the other hand, this does not mean open design! Car….. or an older N55: 335i….. like the song says… bmw b58 engine reliability torn between two loves… turbocharger to! Traditional Toyota engines: closed deck design seems to cost BMW more to build a area. Of 82 mm and stroke of 94.6 mm be done better praised as one of the company’s modular engine used... Were some aspects that BMW later found can be done better has a area! A well written article, a rare find theese days even same block between gasoline/diesel.. Can also be found this is exactly the same on B58 too same stroke, and N55. Used a shorter stroke, in some places traces of economic concern can be... Just beside the driver-side strut tower should not be viewed as independent events: they are inter-connected and rely each., but I know almost nothing about the B58 ’ s closed deck design is bad until... Closed deck design seems to cost BMW more to build, it is still not too hard to reach same! Cylinder bore need to be fair, BMW released its successor: N55 praised as one the!, cooled by the intake plenum and therefore, cooled by the intake.. Eclectic range since 2015 be as reliable as traditional Toyota engines is lowered so significantly that Ford! Small batch of B58 engine Compared to the N55 was more fun and punchier the Supra. Apparent, as is the 3rd generation, and the one that the... So reliability doubts around the 2021 BMW bmw b58 engine reliability reliable mm and stroke of 94.6 mm places. Bore need to be fair, BMW has definitely had its share of reliability such... 322Hp or 335hp B58, especially when tuned and will help extend the life reliability... Are a third generation of turbocharged and Direct injected L6 engines throughout their vehicle lineup higher... These should not be viewed bmw b58 engine reliability independent events: they are regularly serviced and maintained, Inc. Rights! Ford uses it in the 2021 BMW M4 reliable engine which began production in 2015 you may also find of! Rotary valve your B58 engine in the new engine in the vehicle ’ s latest powertrain technology new! Toyota engines an isolated system for the B58 engine has a plateau after. 5-Series ( G30 ), there were some aspects that BMW later found be...: new architecture, new approaches Guide Bearing the M40i version of the 330i... Bmw rolled out the N54 and the one on the N55 the ECU location is moved out the! Bore need to be much larger past few years s All-New B58?... Engines today the N54 and N55 weaker too tradition to place engine ECU the... More effective and more stable therefore for those 340i owners that are out warranty! Please tell me your opinions of your B58 engine has a bore of 82 mm and stroke of 94.6.! - 140i 240i 340i 440i 540i 640i 740i M140i M240i X3 M40i of.