Hi mate,thanks for your reply. Under warranty, some dealers go as far as replacing the entire oil filter housing. With a built motor, the S55 has been pushed to 1150WHP, and surely we will see more impressive numbers as the engine sees further tuning and aftermarket development. B58 is reliable, bulletproof and can handle hella boost on stock block. However, notably the redline sees an increase from 7000 in its predecessors to 7500 on the M division S55. The 5 Most Common BMW N55 Engine Problems Failures & Performance Problems, BMW N54 335i Cost of Ownership Maintenance & Repair Costs, Your email address will not be published. What I like about the inline engines is changing turbos is generally a fairly straightforward job. Oh, BTW, Ive had seasoned bmw technician at bmw dealer, not indy, stating to me point blank that they just top up with tap water and use concentrate when replacing whole coolant and still mix with tap watter, so he doesnt know what Im on about So, some people might just be unlucky with some genius giving it a squirt from garden hose before giving it to first owner because it looked low, and now they have lime scale build up on engine walls or radiator. I have had all 3, I had a 535i e60, with the n54. Each engine responds well to simple tunes and bolt-on modifications, with all the engines producing over 400whp on stock turbo set ups. B58 is obviously a winner. It is built to be efficient and reliable while also being powerful enough to get you through most driving situations. That's our simple answer for now. I'll take my chances with a hugely mass-produced engine thats been detuned. Note that this doesnt mean that your N55 BMW will eventually suffer from all these issues, but they can potentially become a problem the higher the cars mileage. The B58 engine produces 320 horsepower and 332 lb-ft of torque in the F30 340i. Other common leak areas include the radiator, especially if it has been damaged by rocks or other debris, and the B58 coolant cap, which has been shown to lack the air-tightness necessary to keep all of the coolant in the system. That could be said for many modern engines. The engine was recently updated and it will be featured in 2019 onwards models, like the M340i. Reliability scores the highest marks compared to the N54, N55, and S55. Bit of methanol injection will help keep your intake valves cleaner. The pistons are cast, but remain strong, and the B58 receives Electric Arc Wire Spraying on the cylinder walls. Merry Xmas all from Chris in Canberra, Australia! In addition to its smooth power delivery, massive untapped power potential, and internal strength, the B58 is also one of the most reliable engines that the Bavarian marque has ever produced. . Much better when you consider you get the full package in the M3, and the M3 will hold its value better. Great engine and a solid chassis that is fun to drive, especially with some suspension mods. Your comments are welcomed. The TU1 update is mostly intended to improve emissions. other than that it runs good and I still like it. BMW B58 Reliability. It cost about 180 Euro. I liked the n55, but the f10 wasnt the right platform for it, too heavy too wallowy. All things considered, the N55 was still an improvement over the N54 in terms of reliability. While you can save a few bucks going with aftermarket oil filter housing gaskets and O-rings, these are parts that really shouldn't be skimped on. Same with the N54 and E9x chassis. The B58 is more reliable than the N55. The B58 engine was named to Ward's World's 10 Best Engines 4 times, in 2016 (installed in the . Due to the complexity of turbocharged engines, which introduce additional pressure into the equation, modern PCV systems are more advanced than a simple pressure relief bore through the block. Cast pistons.Block Design: Closed DeckRedline: 7000. This local boiling increases coolant pressure for short period of time and causes steam (or wort case coolant) evacuation through safety dump valve (pressure cap on radiator / coolant tank depending on model). Oil leaks around the valve covers and oil filter housing are common problems in most BMWs as the gaskets break down and slowly harden over time and heat cycles. Leaking B58 oil filter housing gaskets can cause significant oil leaks and other related issues, so it really is better to stick with OEM BMW hardware. At this point in the B58's lifecycle, there are a couple of known locations that are more prone to leak coolant than others. Could you give me some advice about this problem? N55 is better than the N54, but its just a reliability upgrade. True BMW enthusiast street-wear hand printed under our 40Roll clothing brand. Not an ideal strategy, but at this point Im not ready to let dealership mechanics to tear this car apart. Thank you for the comment. The BMW B58 engine is a remarkable one. This has been done today and i have driven the car for 20 miles in eco pro and comfort and the car drove perfect,but i will still be keeping an eye on it. Sounds like closed deck system like s55 doesnt have as much overheating problems? Long story short, Im looking to do an engine swap into a 76 Triumph Tr7 and was contemplating the N55 or S55. Yet when local boiling occurrs we were ended up with crap emissions due to increased combustion chamber temp ( and ECU will sometimes will try to mitigate that via increased pilot spray to cool down the chamber funny those modern day ecus ). I couldnt imagine them using it if there was in fact an issue. The engine was a little lumpy at times when idling and perhaps an occasional hint when accelerating. The engine room is simply too full with views inaccessible. Due to its age, the N54 is generally cheaper to purchase and offers the best value when comparing the cost to purchase, and the ability to tune the engine. Once youve done it a few times it becomes very quick and easy. The BMW S55 is an impressive engine from top to bottom and will continue to shine in the tuning world. Anyway, if you dont have physical leaks on loop & are heavy right footed & have more than 75 bhp / litre of displacement = run pure, dont mix with water. Still, every rig that Ive run on emission testing by rule of thumb if there was more than 75 bhp / litre of displacement we would just run it on pure glycol you know, when you try to plot efficiency map on low charged 2 litre diesel (or god forbid DV4/ DV5 /DV6 engines) it makes no point, but if you start playing with something like 2 litre & 200 bph, then local boiling does happen all the time on long pulls with 50/50. However, it's worth monitoring as the B58 ages. Lets look at both engines in detail to find out why the N55 is not as reliable as the new B58. Notable changes from the N55. I suspect the oil filter housing and valve cover issues may rise as the engine ages. With that being said, I would not buy a BMW B58 at this moment. Im not sure what my fault codes were if they even point toward the VANOS but my car is hesitant when accelerating, surging at times and seems like its lacking power.. its definitely not a smooth ride and has been a persistent problem even after the parts mentioned above being replaced. Did BMW live up to that reputation? As an increasing number of N54 owners began pushing power into the 700+ territory the upper limits of the unopened engine became clearer. Most impressive is not the power alone, but also the fact all of the stock components can handle this with a basic tune. The M declination of the B58 engine is the new S58 powerplant, already in use on the new X3 M and X4 M in two output stages: standard with 480 PS (473 hp) and Competition with 510 PS (503 hp). We'll talk about these limits in-depth later and highlight why torque is the more important number. Plastic valve covers are also prone to cracking and leaking over time, though less common than the gasket. The main coolant pump on the S55 is belt driven, which should prove to hold up much better than the electric water pump found in the N54 and N55 engines. Acnam Infotech, BMW Tuning - BMW Performance & Tuning Guides, News, Videos. Haha your last comment seems to be spot on! Crankcase re-design (crankshaft and walls), Updated cylinder head with integrated manifold, Engine hesitation and bogging, especially at lower RPM's. Did this fix the problem? It's another story if there is a visible leak(s), rapid coolant loss, or coolant is mixing with oil. TuningPro.co is owned and operated by 8020 Media. It's worth a shot. Spark plugs and ignition coils wear down pretty quickly once you start modding the N55 and B58. . As a continuation of the N54 and N55 formulas, the B58 has proven that it is the more dependable engine as a whole. In a world where high horsepower cars are increasingly more common these are still absolutely insane numbers. should i stay away? Ever since BMW released the VANOS system in 1992 this has been a common problem and maintenance item. I never owned an N54, but my friends 2007 335i was nice to drive, but had issues. Hi All hopefully BMW will sort this out. The BMW b57 and b58 seem to be solid engines with no glaring design flaws, and a solid reliability record when looked after. So I will let it leak and add coolant and see if over time a visible stain emerges at any location. It says a lot that Toyota opted to use the B58 in a model that made them known for building a beautiful engine in the 2jz. Stock Power: 300 HPWorld Record HP: 978 WHP (~1150hp at the crank assuming 15% drivetrain loss)Displacement: 2979cc (2.979L)Turbocharger: Twin turboCompression: 10.2 to 1Bore x Stroke: 84.0mm (3.31) x 89.6mm (3.53)Internals: Forged crank and rods. There are some guides on youtube and the bimmer forums with part numbers. ps. check out this detailed B58 vs B58TU article, Burger Motorsports has some great intake options, 3.5L EcoBoost Timing Chain Rattle Symptoms & Fixes, Ford Fuel Pump Driver Module Failure Symptoms & Solutions, Updated cylinder head (integrated manifold). Compared to the two former engines the N55 has been on the road longer, allowing for additional time for tuning developments. My 2017 M240i with 27,000 kms is suffering from the same symptoms. Why not? Washed my hands with it and looking forward to my next car (not BMW). Which engine is more reliable, the N55 or the B58? Everyone and their brother has done the LS swap and its become boring. Someone knows what is due? Had n55 in a 2011 335cvt, w manual. These issues seem a recurrent theme, so made me wonder about the long-term costs of maintaining the engine. Original engine,30 years old,same clutch,same gearbox 5+1, same differential 4,44 ratio,. **Ranks are as compared between the four turbo, inline 6 engines**. Either will be plenty of HP in stock form, but I would probably do intake, down pipe, and exhaust, and replace all known gasket and seals that can be issues before installation. Automotive Performance, Tuning, & Modification. BMWs B58 and S55 engines are newer, so more issues may pop up down the road. Additionally, though it shares the forged crank and rods with the N54, everything on the S55 is stronger and beefier. Rear mounted VANOS and timing chain. They are holding up at stock power level and beyond stock power, and were starting to see early B58 units reaching 200,000 miles and more with no issues. Never put excessive loads on the engine when its still cold. The ML variant makes 335hp while the OL features a staggering 382hp. With the first S55 engines being released in the M3 in mid-2014 it is tough to say if there may be common issues that pop up down the road. About heat capacity of water / glycol. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. In 2010, the 335i received the updated N55 engine followed by the B58 in 2016, however, the model was rebranded to the 340i. As the S55 was built on the design of the N55 (which was built on the design of the N54) the BMW S55 shares many similarities. Awesome to hear congrats on the new 340i! The B58 is part of BMWs newest objective in the B series engine family; reducing cost by using the same bore, stroke, block, rods, pistons, etc as the other B series engines. Has it happened to someone else? PCV valve issues are common on the N54, N55, and B58, but can be solved with a PCV valve bypass system if you no longer want to rely on the flimsy PCV diaphragms. If Im in manual mode and drive slowly, say 25 mph, and stay in 2nd or 3rd gear, I can feel the engine pulsing. Although, VANOS work can be done without lifting the engine. Its a lot of extra heat and stress on these engines. My 2019 m140 with 9800 miles has just started doing the same thing,most noticeable in eco pro mode or comfort.As soon as i maintain a consistent low speed of 30mph at 1000rpm the car starts surging,the revs dont increase but i can hear the surging through my remus exhaust which is annoying. I have a 2018 340xi and had to have a VANOS solenoid replaced at 10,300 miles. Yeah - a straight six is a beautiful thing. DIY the basics (oil, brakes, spark plugs, etc) $500 to $1,200 a year Thats really hard to put a number on since it can vary so much. The new B58 engines are a third generation of turbocharged and direct injected L6 engines. If I give it rest by going slowly, little by little the noise disappears, it takes about 30 seconds to completely disappear. The bad image of current engines is compounded by the fact of how EASY those are to tune. Hi Al l/ Zach, Ram/Jeep had plans to come out with a turbo powered I6 to replace the 5.7 Hemi, but nothing seems to have come from that. I also wasnt sure how I would find the paddles, and although I miss the third pedal, the paddles are a blast. It does not have signs of issues with any of its internal components. An S55 powered M3 can be found for roughly $10,000 more than a B58 car. However, as the engine ages, we recommend replacing the valve cover along with the gasket. You can diagnose plenty of odd things and remember that engineers spent years making sure that engine bay vents under the car rather to the cabin so you will not get any iffy smells this unfortunately masks anything going wrong and specially masks and deforms noises. First, let me say this is awesome info and Im grateful for it. Once removed there is no way for BMW to tell the car was ever tuned. There have been a few cases of issues with the crank hub, however it was blown out of proportion due to a company coming up with a product that was claimed to solve the issue. From my understanding it is a fine engine.Disassembly is easy ; the time consuming and risky part is remembering to put all the bits back in the right order!Main costs of maintenance will be consumables such as tyres and brakes. They are both great dependable engines, but the newer B58 has a reliability advantage over its predecessor. This leaves a portion of the oil filter stuck in the bottom of the oil filter housing. To increase the longevity of either your N55 or B58, it is recommended that you follow the regular maintenance schedule and stay on top of preventive maintenance. Happy I stumbled on this website and will definitely be reading more. Would a swap to s55 be ruinously expensive and difficult? We appreciate the positive feedback! However, it's important to note this is not an exhaustive list of what may go wrong with the B58. However, come 100k miles, you will need to replace a large number of difficult to reach items and gaskets. Turns out coolant was getting into the engine. Was stock. My history with bmw is: perhaps look for a used Audi 4 wheel drive convertible. The talker a 6th gear I can find the better. All these inline 6 BMW engines are excellent, but the N54 definitely deserves respect for its accomplishments based on the era the engine was released (and what it still accomplishes to this day). Although the block and internals are stronger than the N54 and N55, the increase in compression is odd. Hi Adam, Thanks for the information. We are not sure if BMW knew the N54 would be capable of handling as much power as it was eventually pushed to by the tuning community. How do the BMW N54, N55, B58, and S55 stack up against each other? Acnam Infotech, BMW Tuning - BMW Performance & Tuning Guides, News, Videos. Its combination of attributes has no equal among six-cylinder engines on the market. It is tough to find a clean M3/M4 for less than $45,000 today so the performance comes at a steep cost up-front. DIY everything $300 to $750 a year However, throughout its first 5 years it seems as if the S55 is a highly reliable engine. . When your BMW B58's PCV valve fails, or is nearing failure, one of the most common symptoms is smoke coming from your exhaust. This engine shows massive potential not only on paper, but also in real world results. The OEM design usually just spins and throws timing off; its highly unlikely it will cause any other damage. I really want one with the N55 or B58 single twin scroll turbo and plan to do about 350-400whp. 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