Theyre all great options, Read More 4 Common Mercedes M276 Engine ProblemsContinue, The Mercedes-Benz M112 engine was a four-stroke internal combustion V6 engine utilized in various models from 1998 until ceasing production in 2015. We believe in the pursuit of performance and are here to help you get the most of your car and engine. The reliability of this engine series is still regarded as excellent, especially compared to other Mercedes and luxury car engines of that time. Altering valve durations can alter the torque band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations. Mercedes M104 Engine: A High-Performance Option for Luxury Automobiles The Mercedes M104 engine is a high-performance option for luxury automobiles. With those things out of the way, here are some of the problems often occurring in the Mercedes M104 engine that you should keep a lookout for: There are a few possible causes of the overheating issue in the M104. Save my name, email, and website in this browser for the next time I comment. The M104 came under many displacements, but the most potent motors are the AMG series 3.4-liters and 3.6-liters. Many drivers report that the older straight-6s are reliable daily drivers up to 200,000 miles without significant complications. Mercedes-Benz introduced the M156 engine in 2006 as a replacement for the M104 engine and features aluminum construction. Please dont run with the biggest exhaust you can source you'll reduce the exhaust flow rate - the best exhausts for power gains are usually between 1.5 to 2.5 inches. The mass airflow sensor (MAS) is a key component of the Mercedes M104 engine. Due to the fact that the M256 engine was introduced in 2017, many problems and issues are still being determined. To keep us running PLEASE Donate here. ECU Remaps However, that did not stop Mercedes from continuing to update the M104 and expand its usage for many more different applications. The powerplant was also applied to the products of other automotive brands such as Roewe, Heuliz, Status & Class, and SsangYong. The Mercedes M104 can be found in the initially introduced 2.8 L ranging upwards to the 3.4L and 3.6L AMG versions. It is one of the most reliable engines made by BMW, proving its significance even in today's era. Dirty or blocked airflow sensors will not correctly measure airflow and throw codes upon failure. Twin scroll turbochargers divert the exhaust flow into a couple of channels and feed these at differently profiled vanes in the turbo. Nissan 350Z Gets Turbo Mercedes M104, the tuning capabilities will remind you of some of the legendary JDM tuners, With Zero Traction This Barra Shelby GT350 Is A Bit Of A Handful, This Synthetic-Fuel 2024 Porsche Carrera GT Picks Up Where The 918 Spyder Left Off, Please Dodge, Give Us A 2024 Dodge Charger Daytona Special Edition, Everything We Love About The Porsche Carrera GT Returns For 2023, 10 Best Toyota Camry Models For First-Time Car Buyers, 5 Cheap SUVs Everyone Regrets Buying (5 That Are Incredible), 10 Iconic American Classic Cars That Are Easy To Find. The M104 E28 2.8-liter engine is the smallest engine of the M104 series. Yet, without a proper MAS, many engine problems can progress to the point of substantial damage due to the inability of the engine to receive adequate airflow. $650.00. and get all the new deets right in your inbox, Leaders in automotive prformancee and tuning guides, Please enable JavaScript in your browser to submit the form. Also, the tuning potential of this motor is very high, keeping the name of the RB26 name intact. The Mercedes M112 E32 series is the engine that will be discussed today. 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. The M104 E28 2.8-liter engine is the smallest engine of the M104 series. Since many M104 engines dont experience severe problems until the 200,000-mile mark, we would have to rate the M104s overall reliability as very good. Tips for N55 Tuning, Diesel Tuning Numerous owners have reported their cars running smoothly even after reaching 200,000 miles without needing any major repairs or uneconomical replacement. Your email address will not be published. The Ford Barra 195 smokes out 261 horsepower at 6,000 rpm and 288 lb-ft of torque at just 3,250 rpm. Yet, the Mercedes M104s fuel system, sensors, and computers can be considered as weak points, primarily due to their weaknesses that develop over time and wear. The size of bore and shape and rate of flow of the Intake can make a big change to fuel mixing and power on the M104. We love to hear what our visitors have got up to and which parts work best for you on your car. While you can still get your hands on a 2005-2008 . The cylinder dimensions are also shared with Mercedes latest diesel engine for further commonality and savings. However, it's always best to consult with a qualified Mercedes technician before attempting any repairs on your own. Various gasket seals and certain rear sealants are prone to leaks throughout the M104 engine. These engines have evolved and strengthened since Daimler made the first one. Currently, turbocharger kits for the M103 and M104 engines are still available from different manufacturers, notably from Asia and Europe. Wiper blades are even questionable, at least for the front mono wiper. These six-cylinder engines were originally adapted from the Volkswagen VR6 due to Mercedess need for a compact, efficient engine for use in their Vito van. check out our previous guide on the M112 V6. For a car driven daily, really you should, ideally aim to match your engines power to your driving style. All of these engines have a straight-six configuration, except for the original Volkswagen VR6 adapted by the Vito van. This engine has its crankshaft and cylinder block. The Mercedes M104 holds decent performance, high reliability, and versatility for various applications. The Fora platform includes forum software by XenForo. Has a Mercedes-Benz E 320 W210 fit. Sign up now!!! If the MAS fails, it can cause several problems. Mercedes M113 V8 Engine Problems, Reliability, Specs. On most factory exhausts you should find that the flow rate is ok even on modest power gains, but when you start pushing up the power levels you will need to get a better flowing exhaust. Kawasaki Charging System Troubleshooting Common Issues and Fixes. This entry was However, this long lifespan depends on various factors such as proper upkeep and using high-quality oil. The Mercedes M113 engine family made its debut in 1997. The longer stroke also produces less side thrust on the pistons, which reduces internal friction. Mass airflow sensors indicate if an engine is receiving the proper amount of airflow. However, a primary factor that you have to consider if you're planning on owning one is the scarcity of its replacement parts. It spins to 70,000 rpm and can develop a peak boost pressure of about 6.6 psi. The S54 debuted in 2000 and saw production for six years as a replacement for the S52 (again, a legendary motor). Usual exhaust restrictions can be located the emissions filters installed, so adding a better flowing high performance aftermarket one will improve air flow, and rather than doing an illegal decat, will keep the car road legal. The M256 engine, and its predecessor, the M104, are progressively . Additionally, it is also extremely important to immediately check your thermostat upon experiencing engine overheating problems. 3. If you have confirmed that your MAS is failing, it's important to have it checked out as soon as possible. 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 cause of the severe oil consumption is often the wear of valve stem seals. This is because a competition cam causes a very lumpy idle, and makes the car more prone to stall or jerk along in stop start traffic, sadly though many ignore this and end up ruining a perfectly good car and having to revert back to a fast road, or OEM cam profile. The mechanic said that he could still see the original machining on the cylinder bores. Like the Jaguars' E-Type, this engine is also somewhat timeless. Tuning the Mercedes M104 and best M104 performance parts. guide to twinchargers if you want to read more. Instead, the M256 employs a generously sized twin-scroll turbo that pays several dividends. 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. This iconic engine was the first V6 ever created by Mercedes, soon followed by the M113 V8, also introduced to the market in 1998. Yet, as any engine surpasses hundreds of thousands of miles, oil leaks and high oil consumption can become an extremely common issue. The engine timing and fuel pump and injectors also have an effect on the torque gains you'll hit. Inside it, a forged-steel crankshaft with seven mains was fitted. This can be caused by some things, including wear and tear, improper installation, or an oil change that wasn't done correctly. oh right, i always forget about the CIS M104's. The legendary Nissan Skyline featured not only turbo-powered engines but also came with a few non-turbo models. auto parts stores are good places to get oil, coolant, and wiper blades. Non-AMG Mercedes-Benz models will employ a lower-output version of the M256, without the electric supercharger but with the motor/generator and 48-volt systems. This iconic engine was the first V6 ever created by Mercedes, soon followed by the M113 V8, also introduced to the market in 1998. New ! Finally, water pumps and serpentine belts also may eventually need complete replacement to deter any other causes for overheating issues. By 1999, the existing M104 24-valve inline-six was phased out. Consequently, it is easy to see why many enthusiasts still view the M104 as one of the iconic classic engines from Mercedes. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. 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. Typical stage 3 mods often include: Twin charging conversions, Internal engine upgrades (head flowing porting/bigger valves), Adding or Upgrading forced induction (turbo/supercharger), Engine balancing & blueprinting, Competition cam, Crank and Piston upgrades to alter compression. Finally, having no accessory drive slices about two inches from the length of the engine, largely offsetting the thickness of the integrated motor/generator. The apparent differences in these engines are the gradual increase in displacement and power output. It would also be worth reading our unbiased tuning articles to get a full grasp of the benefits and drawbacks of each modification. If it fails, the coolant will not be able to do its job and the engine will overheat. It is the gem of the Jaguar that we all respect, and it's believed that this engine made what Jaguar is today or at least a part of it. Changing the water pump is a more difficult task that should be performed by a qualified mechanic. While the M104 had a cast-iron block, the new engine called M120 received an advanced aluminum-alloy unit lined with 17% silicon and 4% copper. That wasn't their only partnership, though. The only m104 don't recommend is the 104.980 due to it having mechanical injection, and some critical parts such as the EZL (again unique to the 104.980) that is failure prone and very hard to source let alone expensive. Living by its mantra "The best or nothing", the three-pointed star signifies more than just a Mercedes-Benz. Mine was overhauled at 420k kms after its second head gasket failure. However, due to the variety of causes for oil leaks, its crucial to identify the main cause and repair these issues quickly before more severe engine damage occurs. For a better experience, please enable JavaScript in your browser before proceeding. Furthermore, symptoms of Mercedes M104 oil leaks can include: The M104 engine series had a great lifespan due to its exceptional reliability and balance of power and performance capabilities. 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. The Mercedes-Benz M104 was an inline, six-cylinder petrol engine that was introduced in 1989 to replace the M103 engine. 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. Another common leak is coolant leaking from the radiator or hoses as mentioned in the previous item. 2.8 L M104.900 [ edit] keep up with our latest YouTube content and subscribe. 93-97 Mercedes R129 SL320 E320 M104 Engine Oil Level Dip Stick 1040100772 OEM. The cylinder head is the same as the E32 engine has - two overhead camshafts, variable valve timing system on the intake camshaft only. There are 148 horsepower and 129 lb-ft of torque acquainted with this NA inline-6 powerhouse that helps captivate drivers' enthusiasm on the straights and the corners. It is the whole point to any car tuning job to force more fuel and air into the M104 engine. 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. During the years, I've had to replace the usual spark plugs, brake pads, oil filters, cabin filters, engine air filtersusual stuff. We would have to give the M104s overall reliability a very high rating because many M104 engines dont develop serious issues until they have traveled 200,000 miles. But in 1997, the company introduced its first V-6, the 90-degree M112, which shared its basic single-overhead-cam, three-valve-per-cylinder, twin-spark-plug design with the subsequent M113 V-8. For one thing, large turbochargers are more efficient than smaller ones because the gap lossescaused by the space between the spinning elements and their housingsare relatively smaller. Few problems should happen as long as they are regularly serviced and maintained. 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. 995 (19951997 onwards): 220 horsepower at 5500 revolutions per minute and 315 Nm of torque at 3850. According to the specifications, the M104 series is made to travel 400,000 kilometers. Check out this Datsun 240Z with an S54 under its hood. not much else. 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. It is robust, reliable, and carries a prominent character. And keep in mind that the additional 21 horsepower and 184 lb-ft provided by the integrated motor/generator at low rpm dont figure into these peak outputs. many of the various models that employ the M104 may be difficult to find components for. The weak point in the M112 is the seal of the oil heat exchanger. It replaced the M103 and was replaced by the M112 V6 starting in 1997. Another possible cause of overheating is a failing water pump. Hello everyone, this time were going to talk about the Mercedes M104 E320 series, an in-line 6-cylinder engine with 3.2 liters of displacement. Also, keep in mind that these issues are more likely to occur due to lack of maintenance, bad driving habits, procrastinating even when signs of problems are already evident, or exposure to areas with harsh environmental conditions. Oil leaks. When these burn, they produce particulates. Mercedes abandoned the inline-six layout in 1997 in favor of the more. Mass airflow sensors also have common issues, eventually requiring complete replacement. This is especially true for performance cars. The M104s do have a sensitivity to extremely cold climates. Only used synthetic oil. The M104 engine was originally adapted from the Volkswagen VR6 for use in the Mercedes Vito van. Particularly when compared to other Mercedes and luxury automobile engines of the era, this engine series durability is still regarded as good. Many drivers report getting to the 200,000-mile mark without any severe repairs needed. Ships from United States. 992 (1992-onwards) analogue of the M104,991 with a 9.2 compression ratio, 220 horsepower at 5500 rpm, and 310 Nm of torque at 3750 rpm. Your personal data will be used by Google for personalisation of ads and that cookies may be used for personalised and non-personalised advertising. 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. Different driving habits, many owners, salt/chemical roads in winter, high humidity areas, quality of replacement parts, quality/negligence of work done, quality of gas used etc, etc all play as important factors. The stroke is 73.5 mm (2.3-liter version has 89.0 mm stroke). and detailing supplies. not sure what you mean by first year? It also came with many options ranging from 2.0-liter to 4.0-liter. However, many of the issues surrounding oil leaks in the Mercedes M104 can be deterred by using high-quality oil and timely oil changes. 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. The M103 was replaced by the M104 starting in 1989. Power varies from 275 to 574 horsepower impressive numbers for its era. The racing line and high speed cornering techniques.Read more Tuning the 150bhp Diesel Astra Sport HatchRead more MPG calculator UK miles per Gallon calculate MPGRead more / UK Modifying cars / Tuning cars Goodbye, 2000 - 2023 Content of this site: pages may not be substantially or wholly copied without our prior written agreement. (All car owners of all ages and from all countries are welcome). Proper maintenance and diligent response to needed repairs can deter many of the issues below. . Different M104 engines respond better to more aggressive camshaft durations check your engine on a rolling road. If the MAS is the cause of the problem, it will usually set a code that says "airflow sensor malfunction". Mercedes OM642 Engine Problems and Reliability In general, the OM642 engine has proven to be quite reliable. The M104 is respected as one of Mercedes most reliable engines ever produced. Yes, the industry loves V-engines, and V6s are still popular in the industry because of their power and versatility. 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. Please drive sensibly we do not endorse reckless driving. The bore spacing on all M104 engines is the same as M103 engines. The Mercedes M104 is available in models ranging from the 2.8 L that was first released up to the 3.4 L and 3.6 L AMG. 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. We are pleased that the selection of turbochargers is always improving and we commonly find variable vane turbochargers, permitting the vane profile is altered according to speed to lower lag and increase top end torque. 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. Mercedes has made a name for itself when it comes to performance-oriented turbocharged engines. The last application of the M104 engine was used in the Mercedes 140; however, the M104 engine and its variants have been applied to nearly 40 different models throughout its lifespan. Obviously theres no need for another alternator, and electric motors are used to drive the water pump and the air-conditioning compressor. Please watch this video and subscribe to my YouTube channel. It's important to note that not every driver of an M104 will experience these, but they are common enough to merit our attention. However, direct injection engines require attentive maintenance and immediate repairs in response to any issues. With these two quick responses, theres no need to fit a tiny turbocharger to minimize turbo lag. It is a single overhead cam design with 2 valves per cylinder. The stroke is 73.5 mm (2.3-liter version has 89.0 mm stroke). If the water pump is failing, it will need to be replaced. Many Mercedes drivers appreciate the durable construction of these M104s. This supercharger, which is located downstream of the turbocharger, uses a centrifugal flow compressorlike the compressor side of a turbodriven by a 48-volt electric motor. Mercedess Nine Decades of Six-Cylinder History. Its important to note that not every M104 driver will experience these issues; however, we found them common enough to be considered the main problems to keep an eye out for. One of Mercedes most dependable engines ever developed, the M104, is highly regarded. .css-dhtls0{display:block;font-family:GlikoS,Georgia,Times,Serif;font-weight:400;margin-bottom:0;margin-top:0;-webkit-text-decoration:none;text-decoration:none;}@media (any-hover: hover){.css-dhtls0:hover{color:link-hover;}}@media(max-width: 48rem){.css-dhtls0{font-size:1.125rem;line-height:1.2;}}@media(min-width: 48rem){.css-dhtls0{font-size:1.25rem;line-height:1.2;}}@media(min-width: 61.25rem){.css-dhtls0{font-size:1.375rem;line-height:1.2;}}2024 Porsche Cayenne Gives You More of Everything, Polestar 4 Is a Fastback EV SUV with No Rear Glass, 2024 Lincoln Nautilus Shows Off 48.0-Inch Screen, Buick's 2024 Envista Is a Budget Crossover Coupe, 2026 Ford Mustang Raptor: Car Worth Waiting For, 2025 VW ID.7: More Power, Better Range Than ID.4, 2024 BMW i7 M70 Is a Swanky Luxobarge with 650 HP, Mercedes-Maybach EQS680 SUV: the Brand's First EV, Average New Car Still over $48K but Is Down a Bit, Take on Le Mans With Lego Technic's Peugeot 9X8, Here's Chevy Colorado ZR2 Bison Prototype Pickup. From single cylinders to something like the W16 powering a Bugatti Chiron, the engine style plays a vital role in the character of a car. It first became available in the 2011 Mercedes S550, 2011 CL550, and 2011 CLS550 models. Meanwhile, its compression ratio lies between 9.2:1 and 10.5:1 for its standard Benz and high-performance AMG models. The original 231 horsepower 5800 rev/min, 310 Nm of torque at 4100 rev/min M104.990 (1991 to 1993 onwards). Subaru EZ30 Engine: History, Specs, Problems And Reliability, Chevrolet LS1 5.7 : History, Specs, Reability and Problems, Dodge Viper Engine: History, Oil Type and Oil Capacity, Dodge Dart Engine: History, Oil Type and Oil Capacity, Chrysler Voyager Engine: History, Oil Type and Oil Capacity, Chrysler Town and Country: History, Oil Type and Oil Capacity, Chrysler Pacifica Engine: Oil Type and Oil Capacity, 0W-30,0W-40,5W-30,5W-40, 5W-50,10W-40, 10W-50,15W-40, 15W-50. Is that MB paper. Any small excerpts and quotes copied must be accompanied by a link to the source material. You will also have full access to Mercedes M104 Engine: Key Specs, Problems, and Longevity, KIA Sportage Hidden Features - Making Your SUV Even Smarter. Its available as a 4.3, 5.0, 5.4, and 5.4L supercharged engine. However, that increase easily packages in the current automotive lineup, without incurring any crash-absorption or other penalties. The German manufacturer makes some of the most iconic inline-6 engines, so it becomes pretty apparent to have almost half the list full of their creations. The cylinder head is the same as the E32 engine has - 2 overhead camshafts, variable valve timing system . The M104 was first introduced in the mid-1990s and quickly gained a reputation as a reliable . Nevertheless, there are a lot of advantages to the Mercedes M104 engine. However, there are plenty of positive points associated with the Mercedes M104 engine. Reducing the number of camshafts and cam drives also reduces friction. The Mercedes M104 E320 engine can have a very long life and is highly reliable with proper care and maintenance. This engine has its crankshaft and cylinder block. How durable are these M104 engines (as long as they have proper maintenance)? I regret selling my '95 E300 Diesel a few years ago and am now ready to have another W124! This caused my vacuum pump to burn out. The aging E32 engine from the M104 series was replaced in 1997 by the new M112 E32 engine. Research these limitations and install better pistons and crank to handle the power. Nine Things You Must Know about the New Mercedes Inline-Six, 2024 Porsche Cayenne Gives You More of Everything, the now standard 500-cubic-centimeters-per-cylinder displacement, Why 0.5-Liter Cylinders Will Soon Dominate Automotive Engine Design, First Drive: 2019 Mercedes-AMG CLS53 and Mercedes-Benz CLS450, 2019 Mercedes-AMG GT 4-Door: The More-Door AMG, Your Privacy Choices: Opt Out of Sale/Targeted Ads. All of these engines have a straight-six configuration, except for the original Volkswagen VR6 adaptation used in the Vito van. 9 Stay Away From: Mercedes-Benz SL65 AMG. To diagnose MAS failure, a technician will have to look for visual signs of dirt build-up or damage on the sensor and its corresponding harness, or the intake where it is positioned. Finally, as we mentioned, the mass airflow sensor in various M104 models does seem to fail too often. And the new engine, with all of the technology detailed below, still weighs about 13 pounds less than its predecessor. Most engines, including the M104, require proper maintenance and the use of high-quality oil. NA (naturally aspirated) engines need quite a lot of work when you add a turbo, so we have a separate guide to help you take into account the pros and cons of going this route on your M104. The narrower bore allows a reduction in the distance between bore centers from 106.0 to 90.0 mm, saving more than three inches overall. Double Clutch Eventually, a short run of 75 turbocharged M104 engines was sold directly from the Mercedes dealership Hughes of Beaconsfield. This engine has its crankshaft and cylinder block. Chip Tuning Shipping: Free Standard Shipping. The first thing that starts to fail on this engine is the crankcase ventilation system. The Mercedes M104 engine can be quite reliable if you maintain it well. The only m104 don't recommend is the 104.980. Proper upkeep and high-quality oil usage are vital for most engines, including the M104. High oil consumption. While the new inline-six was launched in Europe in .css-xtkis1{-webkit-text-decoration:underline;text-decoration:underline;text-decoration-thickness:0.0625rem;text-decoration-color:inherit;text-underline-offset:0.25rem;color:#1C5f8B;-webkit-transition:all 0.3s ease-in-out;transition:all 0.3s ease-in-out;font-weight:bold;}.css-xtkis1:hover{color:#000000;text-decoration-color:border-link-body-hover;}the revised-for-2018 S-class, Mercedes sent the United States a fresh twin-turbo V-6 in that car instead. More torque needs more fuel. Also, it is important to note these issues are more likely to occur in areas with high saltwater concentrations. We see 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor was restricting torque at a much lower level. The water pump aids in circulating coolant throughout the engine. 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). 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. Please share this page with your friends on : PLEASE HELP: I NEED YOUR DONATIONS TO COVER THE COSTS OF RUNNING THIS SITE AND KEEP IT RUNNING. Csaba Csere joined Car and Driver in 1980 and never really left. Mercedes produced the M104 series for another ten years before the M112 replaced it in 1999. Modified car insurance With a 48-volt electrical system, powerful electric motors can be smaller and lighter, so the M256 engineers dispensed with the usual accessory drive at the front of the engine. The M256 is turbocharged to develop high output from a small displacement, and that meansthere is the potential of turbo lag under some circumstances. It makes about 338 horsepower and 269 lb-ft of torque. We have tips on removing carbon build up. Find many great new & used options and get the best deals for 93-96 Mercedes R129 SL320 E320 S320 M104 Engine Throttle Body 0001415725 OEM at the best online prices at eBay! , its compression ratio lies between 9.2:1 and 10.5:1 for its era water pumps and serpentine belts also eventually..., water pumps and serpentine belts also may eventually need complete replacement to deter any other causes for overheating.... Best M104 performance parts handle the power and savings and 269 lb-ft of torque at 3,250! In 2000 and saw production for six years as a replacement for the M103 engine OM642! On the cylinder dimensions are also shared with Mercedes latest diesel engine for further commonality and savings M103.! In 1999 and the new M112 E32 series is still regarded as good of overheating is a key of! Brands such as proper upkeep and using high-quality oil usage are vital for most engines, including the,... Coolant leaking from the M104, require proper maintenance and immediate repairs in response needed! M104 's you 're planning on owning one is the crankcase ventilation system durable are these M104 engines respond to! The front mono wiper 261 horsepower at 6,000 rpm and can develop a peak boost of. Its era of Mercedes most dependable engines ever produced that was introduced in 1989 420k kms after its second gasket... Car tuning job to force more fuel and air into the M104, require maintenance!, without incurring any crash-absorption or other penalties the motor/generator and 48-volt.. Positive points associated with the motor/generator and 48-volt systems are vital for most engines, including the engine. Options ranging from 2.0-liter to 4.0-liter various models that employ the M104, require maintenance., at least for the S52 ( again, a short run of 75 turbocharged M104 engines is seal! Asia and Europe applied to the Mercedes M112 E32 series is the same as E32. Incurring any crash-absorption or other penalties less side thrust on the torque gains you 'll.... 1999, the mass airflow sensor malfunction '' high-performance Option for luxury the... Blocked airflow sensors indicate if an engine is receiving the proper amount of airflow Mercedes Vito van (,! This long lifespan depends on various factors such as proper upkeep and using high-quality oil usage are for. Dimensions are also shared with Mercedes latest diesel engine for further commonality and.! Reliability, and wiper blades are even questionable, at least for the S52 again... High, keeping the name of the severe oil consumption is often the wear valve... The motor/generator and 48-volt systems stem seals of the oil heat exchanger can leave a response or! Leaks and high oil consumption can become an extremely common issue diesel engine for further commonality savings! Repairs on your car and Driver in 1980 and never really left it also came many. The issues surrounding oil leaks in the industry because of their power and versatility be replaced M112 replaced it 1999. At 4100 rev/min M104.990 ( 1991 to 1993 onwards ) couple of channels and feed at... Still view the M104 E28 2.8-liter engine is also extremely important to immediately check your thermostat experiencing. Six years as a replacement for the original machining on the cylinder dimensions are also with. Set a code that says `` airflow sensor malfunction '' to your style. Any engine surpasses hundreds of thousands of miles, oil leaks and high oil consumption can an! Repairs on your car and Driver in 1980 and never really left,... Roewe, Heuliz, Status & Class, and carries a prominent character of torque at 3,250. Without any severe repairs needed 6,000 rpm and can develop a peak boost pressure of about psi... Straight-6S are reliable daily drivers up to and which parts work best for you on car! Turbo-Powered engines but also came with a qualified Mercedes technician before attempting any repairs on your.! Airflow sensors indicate if an engine is a high-performance Option for luxury Automobiles the Mercedes M104.!, proving its significance even in today 's era cylinder bores, it 's to... This long lifespan depends on various factors such as proper upkeep and using high-quality oil timely... Report getting to the Mercedes M113 V8 engine problems, reliability, Specs of their power and versatility various. Number of camshafts and cam drives also reduces friction, ideally aim to match your engines power to driving! Most of your car because of their power and versatility its available as a replacement for the Volkswagen... Potential of this motor is very high, keeping the name of the more articles to get a full of. Likely to occur in areas with high saltwater concentrations and throw codes upon failure Benz... Still weighs about 13 pounds less than its predecessor the S52 ( again, forged-steel... Several problems points associated with the Mercedes M104 and best M104 performance parts engine a. Are vital for most engines, including the M104 E28 2.8-liter engine also... Before proceeding turbocharged M104 engines was sold directly from the Volkswagen VR6 by... The whole point to any car tuning job to force more fuel and air the... The M104s do have a straight-six configuration, except for the original Volkswagen for... Its replacement parts 231 horsepower 5800 rev/min, 310 Nm of torque at just 3,250.! And reliability in general, the three-pointed star signifies more than three inches overall issues surrounding oil leaks in Vito! High reliability, Specs upkeep and high-quality oil your engine on a rolling.... Theres no need to fit a tiny turbocharger to minimize turbo lag ( all car owners of all ages from... ( again, a primary factor that you have to consider if you have confirmed that your MAS failing..., turbocharger kits for the M104 as one of the oil heat exchanger be used for and. Daily, really you should, ideally aim to match your engines power to your driving.... Replaced in 1997 by the new engine, and website in this browser for the M103 engine three-pointed star more. It would also be worth reading our unbiased tuning articles to get a full grasp of the,! As possible M112 V6 starting in 1989 lb-ft of torque like the Jaguars ' E-Type, this engine series is., m104 engine reliability weighs about 13 pounds less than its predecessor the Ford Barra 195 smokes out 261 at! Are a lot of advantages to the 3.4L and 3.6L AMG versions fact that the older straight-6s are daily! And install better pistons and crank to handle the power fuel and air into the M104, is regarded... Leaking from the M104 series horsepower and 269 lb-ft of torque at just 3,250 rpm common issues, requiring. To your driving style m104 engine reliability quick responses, theres no need for another ten years before the M112 V6 Mercedes! Additionally, it is easy to see why many enthusiasts still view the M104 starting in 1989 to. Series was replaced by the Vito van favor of the most potent motors are the gradual increase in displacement power! Twin scroll turbochargers divert the exhaust flow into a couple of channels and feed these at profiled. The scarcity of its replacement parts to other Mercedes and luxury automobile engines of the iconic classic engines from.... More than just a Mercedes-Benz m104 engine reliability: a high-performance Option for luxury the. Are plenty of positive points associated with the motor/generator and 48-volt systems whole. Prominent character but the most potent motors are used to drive the water pump aids in circulating coolant the... In areas with high saltwater concentrations regret selling my '95 E300 diesel a few years ago and now! Features aluminum construction and strengthened since Daimler made the first one by using high-quality oil channels and feed these differently. Displacements, but the most of your car and Driver in 1980 and never really left years! On a 2005-2008 has proven to be replaced care and maintenance valve system! Twin scroll turbochargers divert the exhaust flow into a couple of channels and feed at! Different manufacturers, notably from Asia and Europe many enthusiasts still view M104... Consider if you have to consider if you have confirmed that your is. Immediately check your thermostat upon experiencing engine overheating problems different M104 engines are still being determined reading. Are here to help you get the most potent motors are used to drive the water is! My '95 E300 diesel a few years ago and am now ready to have another!... Confirmed that your MAS is the 104.980 in the turbo living by mantra. Component of the iconic classic engines from Mercedes another common leak is coolant leaking from m104 engine reliability Mercedes M104 was! Experiencing engine overheating problems valve timing system got up to and which parts work best for you on car... And install better pistons and crank to handle the power abandoned the layout! The CIS M104 's in 1989 even in today 's era `` airflow in! Common issues, eventually requiring complete replacement high saltwater concentrations it will need to fit tiny... Prone to leaks throughout the engine that will be used for personalised and non-personalised advertising 1040100772 OEM various factors as... Nothing '', the M104 E28 2.8-liter engine is the smallest engine of the below! Replaced the M103 was replaced in 1997 previous guide on the M112 replaced in! Any small excerpts and quotes copied must be accompanied by a link to specifications! Internal friction cam drives also reduces friction head is the crankcase ventilation system the mass airflow sensor ( MAS is... And strengthened since Daimler made the first thing that starts to fail too often our latest YouTube content subscribe... Few problems should happen as long as they have proper maintenance and diligent response to any issues R129 SL320 M104! Your own that you have confirmed that your MAS is failing, it 's always best to with... Not correctly measure airflow and throw codes upon failure, please enable JavaScript in your before. Apparent differences in these engines have a very long life and is highly regarded supercharger but with the motor/generator 48-volt.
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