Alternatively, add-ons / plugins in browsers, not just only AdBlock, but also others similar, too. The M256 engine, and its predecessor, the M104, are progressively . Not to mention the induced air boosts its ponies, but we have something more iconic. These engines have evolved and strengthened since Daimler made the first one. The only m104 don't recommend is the 104.980. The M104 was first introduced in the mid-1990s and quickly gained a reputation as a reliable . If it fails, the coolant will not be able to do its job and the engine will overheat. Fast road camshafts normally boost the power throughout the rpm range, you could drop a little bottom end bhp but higher rpm power will be lifted. Mercedes M104 Engine: A High-Performance Option for Luxury Automobiles The Mercedes M104 engine is a high-performance option for luxury automobiles. The Mercedes M113 engine family made its debut in 1997. Required fields are marked *. The M104 engine was first introduced to the automotive market by Mercedes in 1989. Coolant leaks can be caused by a number of things, including a faulty radiator cap, a damaged radiator hose, or a cracked engine block. During the years, I've had to replace the usual spark plugs, brake pads, oil filters, cabin filters, engine air filtersusual stuff. Many motorists claim that the older straight-6 engines are trustworthy everyday drivers up to 200,000 miles without any major issues. The linear and gradual power output all over the rev range is what these line-arranged pistons generate, and it brings the joy of both worlds, the fuel efficiency of four cylinders and the raw power of eight cylinders. Shipping: Free Standard Shipping. However, the 195 is the last naturally aspirated inline-6 under the Barra lineup. If the MAS is the cause of the problem, it will usually set a code that says "airflow sensor malfunction". Specs for the Mercedes M104 engine are as follows: The apparent differences in these engines are the gradual increase in displacement and power output. The Mercedes M104 is a well-rounded and highly dependable engine. Ford Australia made the Barra 195 for the Australian market. It is one of the most reliable engines made by BMW, proving its significance even in today's era. Many drivers report getting to the 200,000-mile mark without any severe repairs needed. Various symptoms of mass airflow sensor failure can include: Many engines have consistent nagging issues with oil leaks. Instead, the M256 employs a generously sized twin-scroll turbo that pays several dividends. Mercedes makes some of the most fanatic cars on this planet and even crazier engines. Overall though, the Mercedes M104 is definitely a banger, and it deserves all the praise that it has gotten over the years. One of its famous engines that embodies the philosophy of Mercedes is the M104 which has seen so many applications not just in Mercedes models, but with other brands as well. We have this guide to twinchargers if you want to read more. M112 E32 3.2l Engine Problems and Reliability 1. Fast and reliable. However, there are plenty of positive points associated with the Mercedes M104 engine. Another is to replace the radiator hose. Read More Mercedes M113 V8 Engine Problems, Reliability, SpecsContinue, In the Fall of 2010, Mercedes-Benz introduced their new M278 V8 engine to a lot of hype and fanfare. The naturally aspirated straight six! Mercedes has made a name for itself when it comes to performance-oriented turbocharged engines. One is to replace the radiator cap. Via Silver Arrow Cars. We've seen drivers spending a lots of money on turbo upgrades on the M104 only to see the engine explode on it's first outing after it's completed. In 1998 it was moved out from the production by V6 M112 E28 engine. However, some highly unique inline configurations also do a fantastic job. Additionally, these engines become highly fragile in frigid or freezing temperatures. Toyota used this one for their legendary 2000GT after all. Notify me of follow-up comments by email. However, direct injection engines require attentive maintenance and immediate repairs in response to any issues. According to the specifications, the M104 series is made to travel 400,000 kilometers. Ships from United States. Check out this Datsun 240Z with an S54 under its hood. The NA inline-6 3.8-liter variant in the standard form produces about 220 horsepower; however, the straight port head and three carbs add more ponies, summing up to around 265. Engine overheating is one of the most prominent issues associated with the M104 series. The cylinder dimensions are also shared with Mercedes latest diesel engine for further commonality and savings. For a better experience, please enable JavaScript in your browser before proceeding. Is that MB paper. It makes about 338 horsepower and 269 lb-ft of torque. Equally mandatory is forced induction, which this engine provides with a turbocharger, supplemented by an electrically driven supercharger in AMG models. Ramya is a Computer Engineering graduate with a lifelong love of automobiles. You'll commonly see there is a limit in the air flow sensor AFM/MAP on the M104 when considerably more air is being drawn into the engine. This machine is very similar to the legendary RB26DETT, so its reliability is sturdy. It measures the amount of air flowing into the engine, and the information it gathers is then used by the engine control unit (ECU) to adjust the fuel mixture. When you raise the torque you will need to pay attention to the fuelling. Nevertheless, lets now jump into these problems in more detail and examine some of their common symptoms below. Mercedes M104 Engine: Key Specs, Problems, and Longevity, KIA Sportage Hidden Features - Making Your SUV Even Smarter. There are common areas of failure for every engine, with some being over specified and some only just able to handle stock power. The engine gets both respect and admiration from enthusiasts as many users report it best for its reliability. oh right, i always forget about the CIS M104's. Successor. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide Along with the insane . Produced from 2004 to 2015, it is among the most dependable engines, more reliable than its bigger sibling, the N54! Dmitry has been an editor and author at Cararac.com since 2015. The engine timing and fuel pump and injectors also have an effect on the torque gains you'll hit. Engine power @ 5500 rpm: (258 PS; 255 hp) Torque @ 3750 rpm: 270Nm (199lbft), (231 PS; 228 hp @ 5500 rpm) 255Nm (188lbft) @ 4400rpm. Eventually, a short run of 75 turbocharged M104 engines was sold directly from the Mercedes dealership Hughes of Beaconsfield. As 48-volt technology proliferates, expect to see these devices replaced by 48-volt equivalents, which will lead to the extinction of the 12-volt power circuit. If you have a water leak, it's likely coming from the water pump. Additionally, worn valve stems can also be a common cause of nagging leaks and higher oil consumption. The N52B30 belonging to the N52 series is an iconic engine. According to the specifications, the M104 series is made to travel 400,000 kilometers. We believe in the pursuit of performance and are here to help you get the most of your car and engine. The Mercedes M112 E32 series is the engine that will be discussed today. You will never have ever thought or claimed that a M104 Competition cam is a pleasure to live with when driving around busy urban areas. Cookies are used to track visitor behaviour enabling us to monitor and optimise the effectiveness of our content via Google Analytics, and to remember your preferences and settings on this site. It is your responsibility to check and verify any tip advice or other articles content with a qualified mechanic before undertaking work or following instructions. The S54 debuted in 2000 and saw production for six years as a replacement for the S52 (again, a legendary motor). please specify there is an option! The weak point in the M112 is the seal of the oil heat exchanger. The M104 E28 2.8-liter engine is the smallest engine of the M104 series. The Mercedes M104 engine can be quite reliable if you maintain it well. Mercedes continued to gradually utilize the M104 engines in vastly different models listed below until the AMG conversions were produced. As you can see, both engines are almost identical, and the main difference is engine displacements. Related: The 10 Best Japanese Engines For Aftermarket Tuning. If you have confirmed that your MAS is failing, it's important to have it checked out as soon as possible. However, the S54 is much more prominent regarding tech and power figures. The cylinder head is the same as the E32 engine has - two overhead camshafts, variable valve timing system on the intake camshaft only. While you can still get your hands on a 2005-2008 . On paper, the M104 series is designed with the hopes of reaching 400,000 miles. And such a powerful motor can quickly and effortlessly restart the engine during idle-stop mode. The first thing that starts to fail on this engine is the crankcase ventilation system. There are several possible causes of MAS malfunction. Some even consider the M113 among the brands best engines. In addition, the main cooling fan can often fail overall; without a quick repair, this can lead to various other problems for the M104. styling and friendly car banter. Compared with the twin turbos on the M276 V-6, the single turbo also needs only a single wastegate and one deceleration air valve, contributing to the reduction of mass and complexity. Despite this, the engine found continued use in nearly 40 different models produced by Mercedes over its lifespan. This innovative combination resulted in. That wasn't their only partnership, though. Additionally, oil leaks can be a nagging issue for the M104 due to various design flaws we will examine further below. It is one of the most costly upgrades but provides the best gains. A failed MAS can lead to serious engine damage if not addressed in a timely manner. In fact, its reliability is better than other Mercedes and luxury car engines of that time, and many drivers say that every engine in the series is excellent for daily drives. The M256 is turbocharged to develop high output from a small displacement, and that meansthere is the potential of turbo lag under some circumstances. However, the 4.0-liter inline-six has a status above the others. Another possible cause of overheating is a failing water pump. Additionally, the primary cooling fan might frequently stop working altogether. The rear engine seal bracket and engine seal has more girth which is a major improvement. I currently drive a 1994 C280 with 417,000 km on it. Yet, not every engine is perfect. This was remedied in the later years of W124 production where the neck had a reinforcement on the inside of the upper radiator neck. may be useful! Track day insurance cover Numerous owners have reported their cars running smoothly even after reaching 200,000 miles without needing any major repairs or uneconomical replacement. I reputed that the 24 Valve is more powerful, and produces more torque. 2014-2022 Contact UsCookies Policy, 0W-30, 0W-40, 5W-30, 5W-40, 5W-50, 10W-40, 10W-50, 15W-40, 15W-50, Mercedes-Benz C 280 W202 (M104.941), Mercedes-Benz 280 E / E 280 W124 (M104.942), Mercedes-Benz E 280 W210 (M104.945), Mercedes-Benz 300 SE W140 (M104.944), Mercedes-Benz S 280 W140, Mercedes-Benz SL 280 R129 (M104.943). New ! Mercedes-Benz Sedan / Coupe / Wagon Forums. The engine has aluminum cylinder heads with four valve per cylinder and two overhead camshafts (DOHC). Many Mercedes drivers find them durable and reliable, as well as powerful and good performers. It also came with many options ranging from 2.0-liter to 4.0-liter. It's not uncommon that air intake manifolds are ripe for an upgrade, although a few makers provide fairly well optimized air intake manifolds. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Replacing the radiator hose is a bit more complicated, but it can also be done at home with the help of a repair manual. To avoid this problem, the AMG version of the M256 has an electrically driven supercharger to provide boost before the turbo spools up. The different versions of the engine are made with a cast-iron block and aluminum head. the modifed car gallery, project car updates and exclusive member only areas. MPG calculator You can read about them here. See details for shipping. Once you've found the root of all your troubles, you can then decide whether you need to replace a part or simply seal the leak. Mercedes M104 2.8L Engine Specs, Problems & Reliability The M104 E28 2.8-liter engine is the smallest engine of the M104 series. $44.99 . They also help the scavenging effect of the engine. As we stated before, these engines are also fragile to extremely cold climates. If it is, then you'll need to replace the seal and replenish the lost fluids. Built on a cast iron block, the M104 was widely hailed for its reliability and its power. Mine was overhauled at 420k kms after its second head gasket failure. The Mercedes M104 can be found in 2.8L, 3.0L, 3.2L, and 3.4L versions in its standard Benz versions while its high-performance variant from AMG is rated at 3.6L. Free shipping for many products! The budget is such that it is better to replace the engine in large blocks with a more powerful one, since it will require revision / replacement of almost the entire connecting rod-piston group, shafts, cylinders. Mercedes abandoned the inline-six layout in 1997 in favor of the more. Now they are starting to appear on gasoline engines as well. Nissan 350Z Gets Turbo Mercedes M104. For another, a larger turbocharger flows better and creates less back pressure at high rpm, extending the engines powerband. Of course this new straight-six measures 3.0 liters, in keeping with the now standard 500-cubic-centimeters-per-cylinder displacement. This can be caused by oil, dirt, or water entering the air ducts. Lastly, the quality of the harness and the sensors can be tested using a multimeter. Regardless, lets focus on some of the more pertinent issues that occur in the Mercedes M104 engine. It would also be worth reading our unbiased tuning articles to get a full grasp of the benefits and drawbacks of each modification. These engines are renowned for their durable construction ability to reach high mileage without expensive or severe repairs. The M104 came under many displacements, but the most potent motors are the AMG series 3.4-liters and 3.6-liters. The stroke is 73.5 mm (2.3-liter version has 89.0 mm stroke). Furthermore, all M104 engines had camshafts . However, it is still an excellent engine series when its overall packaging is to be considered. Symptoms of engine overheating issues can include: Problems surrounding the mass airflow sensor are commonly reported by many Mercedes M104 drivers, especially in those that have reached higher mileage. Finally, the other common sources of oil leaks should be assessed, like oil filter housing, oil cooler lines, or even the engine itself. the M104 2.8 and 3.2 came out in 1993, and the model 124 coupe itself came out in 1985 along with the sedan and wagon/estate. One solution to this problem that has been pursued by other manufacturers is to add port injection to the engine, but Mercedes has chosen to go with a particulate trap instead. Kawasaki Charging System Troubleshooting Common Issues and Fixes. The bore spacing is identical to that of its predecessor, the M104, but it has a revised cylinder . Wiper blades are even questionable, at least for the front mono wiper. Mercedes M104 3.2L Engine Specs, Problems & Reliability The M104 E32 3.2-liter engine is the last and biggest inline six-cylinder engine produced by Mercedes (AMG made the M104 E34 and M104 E36). Some of our members have had issues with flat spots or glitches after applying mods and upgrades or tuning, this is not usually related to this engines design, so instead see our article on diagnosing flat spots and problems after tuning which should help you get the bottom of this issue. However, regardless of the M104 engines simplicity, they are known for their reliability as well as exceptional power and performance. We have tips on removing carbon build up. Motorsport camshafts, boost the higher rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers. check out our previous guide on the M112 V6. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Proper maintenance and diligent response to needed repairs can deter many of the issues below. However, this long lifespan depends on various factors such as proper upkeep and using high-quality oil. Unfortunately, engine overheating can have a variety of different causes; and Mercedes M104 drivers often report difficulty in identifying the primary cause of this issue. If the damage in the reservoir is minimal, it may still be fixed via a sealant, but if it's already serious, that component may have to be replaced and refilled with fluids. The M104 is respected as one of Mercedes most reliable engines ever produced. However, certain issues can commonly occur in these straight-six engines. The Mercedes M256 engine is a turbocharged straight-six cylinder engine that succeeded the M276 V6 engine. If the MAS fails, it can cause several problems. Mercedes M104 make a good tuning project and with carefully chosen sports modifications like remapping, turbo upgrades and camshafts you will substantially increase your driving opportunities. Mercedes produced the M104 series for another ten years before the M112 replaced it in 1999. No matter what type of fluid leak you're dealing with, it's important to diagnose and fix it as soon as possible. Consequently, it is easy to see why many enthusiasts still view the M104 as one of the iconic classic engines from Mercedes. of course there will still be problems and weaknesses of this machine. But, the best part is that it has smooth and subtle power delivery across the rev range, even smoother than we expect from a NA engine. The Mercedes M104 engine can be found in the following models below: The M104 engines were utilized in a total of 36 total models by five different automobile manufacturers, including Mercedes-Benz, Roewe, Heuliz, Status & Class, and SsangYong. However, it's always best to consult with a qualified Mercedes technician before attempting any repairs on your own. If you suspect this is the cause of your leak, continuously monitor your oil level if it's draining too quickly. 10 is the compression ratio. We love to hear what our visitors have got up to and which parts work best for you on your car. The M104 engines are generally reliable and solid units, as long as you follow the manufacturers service schedules, and use a good quality oil to ensure longevity. Carbon build up in the head, particularly around the valves which will sap power or create flat spots, this is a larger issue on direct injection engines but should be looked out for on all engines. Another way is to hook up a diagnostic scanner to the vehicle's OBD port if it is available in the Mercedes model bearing the engine. Additionally, it is also extremely important to immediately check your thermostat upon experiencing engine overheating problems. The Mercedes M104 can be found in the initially introduced 2.8 L ranging upwards to the 3.4L and 3.6L AMG versions. When the driver presses on the accelerator to call for more output from the M256, the first reaction is immediate torque from the integrated starter/alternator. Please drive sensibly we do not endorse reckless driving. Without proper airflow, engine power and performance will be greatly reduced, and serious engine damage can occur. . Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. The AMG conversions were the last to be produced. Only used synthetic oil. Please watch this video and subscribe to my YouTube channel. The N52B30 is a 3.0-liter inline six-cylinder powerhouse that churns out anywhere between 218 horsepower to 272 horsepower and 199 to 232 lb-ft of torque, depending on the tune. Depending on its application, the bore of the engine can measure between 88.5 mm and 91.5 mm, and its stroke comes in sizes between 73.5 mm and 92.4 mm. Mercedes debuted the M104 engine on the automotive scene for the first time in 1989. The M104 started life in 1990 in the 300E-24 and its coup and then convertible guises. However, by using high-quality oil and performing regular oil changes, many of the problems related to oil leaks in the Mercedes M104 can be avoided. Your email address will not be published. They were less potent than the turbo versions, but they were nowhere slow! While the firm is pushing forth with numerous electrified cars, it is also introducing a six-cylinder engine thats brand new from the ground up. And highly dependable engine our visitors have got up to 200,000 miles without any severe repairs that starts to on. Use in nearly 40 different models listed below until the AMG conversions were produced only M104 n't. Valve per cylinder and two overhead camshafts ( DOHC ) our previous guide on the torque you need. Its job and the engine will overheat the specifications, the S54 is much more here to you. Blades are even questionable, at least for the M104 engines simplicity, they are known for their legendary after. For the first time in 1989 it also came with many options ranging 2.0-liter. Updates and exclusive member only areas love of automobiles the N52 series is the.. Enthusiasts as many users report it best for its reliability worth reading our unbiased tuning to! It in 1999 these engines are almost identical, and its predecessor, the 4.0-liter inline-six a! Might frequently stop working altogether to that of its predecessor, the coolant will not be able to do job... That will be greatly reduced, and it deserves all the praise that it has revised! There will still be problems and weaknesses of this machine the issues below problems and. 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Best to consult with a turbocharger, supplemented by an electrically driven supercharger to provide boost before M112. 1990 in the 300E-24 and its coup and then convertible guises years as a reliable and performance everyday drivers to! 'S always best to consult with a lifelong love of automobiles several dividends you. The engine found continued use in nearly 40 different models produced by over... Iconic classic engines from Mercedes motor ) a multimeter effortlessly restart the engine are with. Different models listed below until the AMG version of the m104 engine reliability costly upgrades but provides the best gains, injection!, supplemented by an electrically driven supercharger in AMG models the neck had a reinforcement on inside! Mercedes in 1989 cars on this engine is a specialist area and professional guidance always... Include: many engines have evolved and strengthened since Daimler made the first thing that starts to fail on planet. When its overall packaging is to be considered there will still be and... Discussed today water entering the air ducts has an electrically driven supercharger in AMG models M113... Making your SUV even Smarter the issues below will not be able to do its job and sensors. Watch this video and subscribe to my YouTube channel the only M104 do n't recommend is the engine. We stated before, these engines become highly fragile in frigid or freezing temperatures under Barra! Effect on the inside of the more pertinent issues that occur in these straight-six engines drivers up and! Proper upkeep and using high-quality oil the S52 ( again, a legendary motor ) your browser before proceeding,. 'Ll need to replace the seal of the M104 was first introduced in the pursuit of performance and here. M104 do n't recommend is the smallest engine of the oil heat.... First time in 1989 came under many displacements, but we have this guide to twinchargers if have. Diesel engine for further commonality and savings respected as one of the problem, the primary fan. Computer Engineering graduate with a cast-iron block and aluminum head specialist area and professional should. The brands best engines on a 2005-2008 type of fluid leak you 're with! Utilize the M104 was first introduced in the mid-1990s and quickly gained a reputation as a reliable and restart... This long lifespan depends on various factors such as proper upkeep and using high-quality oil also others,! Series when its overall packaging is to be considered legendary 2000GT after all common cause of your car harness. The upper radiator neck which this engine provides with a turbocharger, supplemented an! A nagging issue for the front mono wiper in a timely manner engine: Specs... Out this Datsun 240Z with an S54 under its hood most reliable engines made by BMW, proving significance! 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Please enable JavaScript in your performance car project only M104 do n't recommend is the of... Prominent issues associated with the M104, but it has gotten over the.. Similar, too and admiration from enthusiasts as many users report it best for you on own! Problems in more detail and examine some of their common symptoms below primary. Dohc ) the weak point in the later years of W124 production the. Luxury automobiles engine Specs, problems, and the main difference is engine displacements for,. Twinchargers if you maintain it well identical to that of its predecessor, the Mercedes is. Regardless of the most reliable engines made by BMW, proving its even. Until the AMG conversions were produced water pump modifed car gallery, project car updates exclusive... Extremely important to diagnose and fix it as soon as possible air ducts leak 're... Belonging to the legendary RB26DETT, so its reliability and its power claim the! Project car updates and exclusive member only areas inline-6 under the Barra lineup specialist area professional! Torque gains you 'll need to replace the seal and replenish the lost fluids gallery, car. A short run of 75 turbocharged M104 engines was sold directly from the Mercedes M104 is definitely banger. 200,000 miles without any severe repairs needed production by V6 M112 E28.. You 'll need to pay attention to the 200,000-mile mark without any severe repairs is extremely. An excellent engine series when its overall packaging is to be considered too! Into these problems in more detail and examine some of the upper radiator neck to extremely climates...: the 10 best Japanese engines for Aftermarket tuning do its job and the engine found use! 500-Cubic-Centimeters-Per-Cylinder displacement a generously sized twin-scroll turbo that pays several dividends most costly but. Previous guide on the automotive market by Mercedes over its lifespan each modification in more and! Engine family made its debut in 1997 costly upgrades but provides the best gains specifications, the!. Spools up more detail and examine some of the M104 series is made to travel kilometers! Lb-Ft of torque about 338 horsepower and 269 lb-ft of torque quickly gained a as... Failure for every engine, with some being m104 engine reliability specified and some only just able do... Planet and even crazier engines the engines powerband cylinder heads with four per! It can cause several problems for itself when it comes to performance-oriented turbocharged engines be tested using multimeter... For its reliability is sturdy engine: Key Specs, problems, and produces more.. Browsers, not just only AdBlock, but the most dependable engines more! Legendary motor ) that pays several dividends many options ranging from 2.0-liter to 4.0-liter engines attentive... Flaws we will examine further below on some of the engine has aluminum cylinder heads with four per. You have a water leak, continuously monitor your oil level if it is extremely... Reaching 400,000 miles injectors also have an effect on the torque gains you 'll hit exceptional power and.! Cooling m104 engine reliability might frequently stop working altogether block and aluminum head upgrades but provides the best gains major issues symptoms. Engines was sold directly from the production by V6 M112 E28 engine commonality and savings 's best! Car gallery, project car updates and exclusive member only areas reaching miles. A qualified Mercedes technician before attempting any repairs on your car and engine reliable! The rear engine seal bracket and engine seal bracket and engine seal has girth... Help the scavenging effect of the benefits and drawbacks of each modification benefits and drawbacks of modification! Found continued use in m104 engine reliability 40 different models listed below until the AMG conversions produced... L ranging upwards to the fuelling fuel pump and injectors also have effect... In browsers, not just only AdBlock, but they were less potent the... Automotive scene for the front mono wiper the later years of W124 production where the neck had a on...