m104 engine reliability

Mercedes M113 V8 Engine Problems, Reliability, Specs. Notify me of follow-up comments by email. The cylinder head is the same as the E32 engine has - 2 overhead camshafts, variable valve timing system . Do remember, however, that parts replacement for some trims of the engine may be quite challenging to find nowadays. The more air you can get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes superb power gains. 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. The Mercedes M256 engine is a turbocharged straight-six cylinder engine that succeeded the M276 V6 engine. Is this correct? The M256 engine, and its predecessor, the M104, are progressively . The screaming V10s and aerodynamic lunacy would define the sound and essence of the sport in the modern age. The M104 engine was originally adapted from the Volkswagen VR6 for use in the Mercedes Vito van. The inline design also greatly reduces the number of parts in the engine: one cylinder head instead of two, one camshaft drive instead of two, one exhaust manifold instead of two, one turbocharger instead of two, one catalyst instead of two, two camshafts instead of four, two cam-phaser mechanisms instead of four. BMW is a renowned brand for producing some of the best inline-six engines. $650.00. Which helps us keep our guides and tips up to date helping others with their modified car projects. To keep us running PLEASE Donate here. 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. Shipping: Free Standard Shipping. Thanks! 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. It was designed on the basis of the 3.2-liter engine. Mercedes M104 engine tuning Redesigns of the 3.2 to 3.6 engine are very popular, but not economically viable. 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. 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. 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. Changing the water pump is a more difficult task that should be performed by a qualified mechanic. Via Car Pixel However, this chassis is quite heavy, using thick steel construction, and the powertrain is rather underpowered, especially when considering modern standards. It symbolizes over a century of tradition, a dedication to quality, and a promise to always shine brighter than before. Free shipping. Mine was overhauled at 420k kms after its second head gasket failure. The water pump aids in circulating coolant throughout the engine. Thats enough to provide strong engine response while the turbo gets up to speed, at which point a check valve closes and the turbo takes over from the electric supercharger. The inline engine arrives here first in 2019 models of the Mercedes-AMG E53,the CLS-class, andthe AMG-only GT53 four-door, and it is expected to spread to the companys other offerings. Help us improve, leave a suggestion or tip. It is robust, reliable, and carries a prominent character. When you raise the torque you will need to pay attention to the fuelling. The engine was equipped with all modern technologies of engine development. The M104 came under many displacements, but the most potent motors are the AMG series 3.4-liters and 3.6-liters. Related: Why Yamaha Is Developing A 5.0-Liter V8 Hydrogen Engine For Toyota. Mercedes M104 engine leaks can be frustrating and difficult to diagnose. 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. The engine gets both respect and admiration from enthusiasts as many users report it best for its reliability. According to the specifications, the M104 series is made to travel 400,000 kilometers. Like the Jaguars' E-Type, this engine is also somewhat timeless. 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. The Mercedes M104 engine can be quite reliable if you maintain it well. Wiper blades are even questionable, at least for the front mono wiper. The Mercedes M104 E320 engine can have a very long life and is highly reliable with proper care and maintenance. The stroke is 73.5 mm (2.3-liter version has 89.0 mm stroke). The bore spacing is identical to that of its predecessor, the M104, but it has a revised cylinder . The MF10 is a great engine and its power output is impressive, but Yamaha gets some share of the credit as well. . Throughout this guide, we will analyze some of the pros and cons related to the M104 series and its overall impact on the automotive market. Mine was overhauled at 420k kms after its second head gasket failure. 994 (1993-onwards) analogue of the M104,990 with a different intake manifold, 231 horsepower at 5600 revolutions per minute, and 315 Nm of torque at 3750 revolutions per minute. 3. 1994 was the minor face lift to the front end along with the re-designation of the model numbers from 300CE to E320 or whatever, thats all. may be useful! 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. .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. Various different culprits can cause these oil leaks and high oil consumption. Related: Swapped! Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. Driving on a faulty mass airflow sensor does not directly result in severe engine damage. Dmitry has been an editor and author at Cararac.com since 2015. Many Mercedes drivers appreciate the durable construction of these M104s. As you can see, both engines are almost identical, and the main difference is engine displacements. Mercedes abandoned the inline-six layout in 1997 in favor of the more. The S54 debuted in 2000 and saw production for six years as a replacement for the S52 (again, a legendary motor). Mercedes produced the M104 series for another ten years before the M112 replaced it in 1999. However, no engine is perfect and there arent any exceptions here. Tips for N54 Tuning of course there will still be problems and weaknesses of this machine. The different versions of the engine are made with a cast-iron block and aluminum head. Some may consider Mercedes-Benz solely a luxury brand. Equally mandatory is forced induction, which this engine provides with a turbocharger, supplemented by an electrically driven supercharger in AMG models. This iconic engine was the first V6 ever created by Mercedes, soon followed by the M113 V8, also introduced to the market in 1998. We think this one is common sense, but you'll need to match your fuel injector to the type of fuel your car uses as well. During the years, I've had to replace the usual spark plugs, brake pads, oil filters, cabin filters, engine air filtersusual stuff. Ford's 302 engine is known for its reliability and performance, but it can also be heavily modified for even more power. Not if the owner didn't miss many scheduled check-ups. The bore spacing on the M103 engine is 97 mm. With these two quick responses, theres no need to fit a tiny turbocharger to minimize turbo lag. The Ford Barra 195 smokes out 261 horsepower at 6,000 rpm and 288 lb-ft of torque at just 3,250 rpm. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. M112 E32 3.2l Engine Problems and Reliability 1. I've had the car for 12 years, and when I first got it, I replaced the engine wiring harness, spark plugs, spark plug wires and boots, distributor coils (3), MAF sensor, fuel pressure regulator, crankshaft position sensor, front and rear brake pads, oil and filter change, new antenna (current one was snapped), and had the rear windows tinted and a good clay wax. Ford Australia made the Barra 195 for the Australian market. This can be caused by some things, including wear and tear, improper installation, or an oil change that wasn't done correctly. With all those problems considered, we still stand by our rating of the Mercedes M104 engines reliability as very good. Throughout the many different applications of the M104, only a few substantial design flaws and reoccurring issues can be identified. How durable are these M104 engines (as long as they have proper maintenance)? Its rated at 362 horsepower as installed in the CLS450. Unfortunately, there are many different reasons why engines can overheat, and Mercedes M104 drivers frequently complain that it is difficult to pinpoint the root of the problem. Meanwhile, its compression ratio lies between 9.2:1 and 10.5:1 for its standard Benz and high-performance AMG models. 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 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. 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. The self-appointed smart set think the internal-combustion engine is on its last legs, but not Mercedes-Benz. V6s are still popular in the industry because of their power, collaborating once again to produce a 5.0-liter V8 engine that runs on Hydrogen, Why Yamaha Is Developing A 5.0-Liter V8 Hydrogen Engine For Toyota, The 10 Best Japanese Engines For Aftermarket Tuning, robust, reliable, and carries a prominent character, more reliable than its bigger sibling, the N54, 5 BMW Engines That Belong In A Junkyard (5 That Will Annihilate Anything), Swapped! An electric water pump can be precisely controlled to provide the engines exact cooling requirements, facilitating rapid warmup. 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. Few problems should happen as long as they are regularly serviced and maintained. If the MAS fails, it can cause several problems. It replaced the M103 and was replaced by the M112 V6 starting in 1997. If you have a water leak, it's likely coming from the water pump. The AMC 4.0-liter inline-six engine is Chrysler's most renowned inline-six engine. 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. The intake and exhaust durations will alter depending on the chosen cam profile, so large torque gains are on offer for cam upgrades. It would be much cheaper to build your own turbo kit. . The Aluminum pistons and cylinder head, cast-iron block, forged steel cam connecting rod, and various other engine parts make a robust motor that produces a crazy 277 horsepower and an insane 239 lb-ft of torque, pushing the driver to the seat. The only known radiator issue is the cracking and failure of the upper radiator neck. 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. Required fields are marked *. Saltwater specifically can cause much faster erosion. . Specs for the Mercedes M104 engine are as follows: The apparent differences in these engines are the gradual increase in displacement and power output. Eventually, a short run of 75 turbocharged M104 engines was sold directly from the Mercedes dealership Hughes of Beaconsfield. The M256 is turbocharged to develop high output from a small displacement, and that meansthere is the potential of turbo lag under some circumstances. If you have confirmed that your MAS is failing, it's important to have it checked out as soon as possible. Few problems should happen as long as they are regularly serviced and maintained. However, not every M104 will meet that milestone, and many require extreme diligence in terms of proper repairs and meticulous maintenance. If it fails, the coolant will not be able to do its job and the engine will overheat. 94-97 Mercedes Benz R129 SL320 Engine Suppressor Cover, Distributor Cover. Oil leaks. Finally, to prevent any other causes of overheating problems, water pumps and serpentine belts may eventually require total replacement. Also, the tuning potential of this motor is very high, keeping the name of the RB26 name intact. Also, it is important to note these issues are more likely to occur in areas with high saltwater concentrations. Shipping: Free Standard Shipping. It's not uncommon that air intake manifolds are ripe for an upgrade, although a few makers provide fairly well optimized air intake manifolds. Breathe easy. not sure what you mean by first year? This is even true with the very precise piezo injectors in the M256, which operate at up to 2900 psi of injection pressure. As we stated before, these engines are also fragile to extremely cold climates. 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. Track day insurance cover In some cases, it may be necessary to replace the entire MAS assembly. Twin scroll turbochargers divert the exhaust flow into a couple of channels and feed these at differently profiled vanes in the turbo. This device operates on 48 volts, which looks to be the future standard in automotive electronics because it can efficiently provide for the increasing power requirements of modern cars. One reason is that engines with direct fuel injection generate more particulates than port-injected engines do. The cooling fan clutch is probably the root cause of many of these problems with M104 engines. Sign up now!!! Please drive sensibly we do not endorse reckless driving. It first became available in the 2011 Mercedes S550, 2011 CL550, and 2011 CLS550 models. And yes, aside from head gasket issues, it's pretty bulletproof. The M104 engine and its derivatives have been utilized in close to 40 distinct models during its existence, with the Mercedes 140 serving as its final use. However, the S54 is much more prominent regarding tech and power figures. combined 11.0. Its also related to the Fiat-Chrysler 3.6L Pentastar V6 engine since Mercedes was owned by FCA at the time. It makes about 338 horsepower and 269 lb-ft of torque. You will also have full access to BMW kept the production line for this engine running for 11 years: from 1978 till 1989. Produced from 2004 to 2015, it is among the most dependable engines, more reliable than its bigger sibling, the N54! The new engine, M256, goes back to the traditional inline layout with its inherent perfect primary and secondary balance, making it even smoother than a 60-degree V-6or a V-8, for that matter. And the tuning capabilities will remind you of some of the legendary JDM tuners out there. However, a primary factor that you have to consider if you're planning on owning one is the scarcity of its replacement parts. 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. Join our forum today and benefit from over 300,000 posts on tuning 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. The RB26DE is a 2.6-liter inline-six motor that churns out a massive 217 horsepower and 181 lb-ft of torque. On paper, the M104 series is designed with the hopes of reaching 400,000 miles. Mass airflow sensors also have common issues, eventually requiring complete replacement. 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. 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. Finally, the other common sources of oil leaks should be assessed, like oil filter housing, oil cooler lines, or even the engine itself. 10 is the compression ratio. The units that are particularly scarce are the 3.4L and the 3.6L variants. Please use our forums if you wish to ask a tuning question, and please note we do not sell parts or services, we are just an online magazine. I have one my self completely stock. Without proper airflow, engine power and performance will be greatly reduced, and serious engine damage can occur. Built on a cast iron block, the M104 was widely hailed for its reliability and its power. Turbocharger kits were available for both the M103 and M104 from various aftermarket manufacturers, further boosting power. Throughout this guide, we will discuss the history of, Read More Mercedes M112 V6 Engine GuideContinue, Your email address will not be published. Mercedes-Benz introduced the M156 engine in 2006 as a replacement for the M104 engine and features aluminum construction. A proper AMG product from Mercedes, the SL65 AMG featured a ridiculously powerful twin-turbo V12 engine, making 604 hp with 738 lb-ft of torque. This was remedied in the later years of W124 production where the neck had a reinforcement on the inside of the upper radiator neck. 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. Typical stage 2 mods often include: Fast road cam, high flow fuel injectors, Sports catalyst & performance exhaust, induction kit, Ported and polished head, fuel pump upgrades. 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. I regret selling my '95 E300 Diesel a few years ago and am now ready to have another W124! Oil leaks are a frequent, bothersome problem with many engines. And as a nod to the electrification trend, it also incorporates an electric motor/generator for electrically assisted propulsion. 9 Stay Away From: Mercedes-Benz SL65 AMG. Privacy Policy: We do not store or collect personally identifiable information. Mercedes M256 Engine Reliability & Problems. Just very quickly over heated and was destroyed. You can read about them here. It is the result of years of technological advances and engineering refinements, culminating in an engine that is powerful, reliable, and efficient. Dirty or blocked airflow sensors will not correctly measure airflow and throw codes upon failure. The cause of the severe oil consumption is often the wear of valve stem seals. The big stuff were just the battery, water pump, and alternator. I always believed that, but had one in a 1993 300 CE blow up at 81,000 miles because a plastic nib fell out of the radiator, it lost all coolant and it burned up with no overheat light coming on on the dash. I found a '94 E320 that is very promising; it has been owned by an enthusiast and has lots of recordsbut it has 250k miles. Mercedes continued to gradually utilize the M104 engines in vastly different models listed below until the AMG conversions were produced. Particulate traps have long been a necessity for diesel engines to meet emissions requirements around the world. A 48-Volt Integrated Starter/Alternator. Fast and reliable. Replacing the radiator cap is a relatively simple process that can be done at home. Many drivers report getting to the 200,000-mile mark without any severe repairs needed. Inside it, a forged-steel crankshaft with seven mains was fitted. According to the specifications, the M104 series is made to travel 400,000 kilometers. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Modifications 995 (19951997 onwards): 220 horsepower at 5500 revolutions per minute and 315 Nm of torque at 3850. It generates about 190 horsepower and an impressive-for-the-time 235 lb-ft of torque! 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. Engine power @ 5500 rpm: (258 PS; 255 hp) Torque @ 3750 rpm: 270Nm (199lbft), (231 PS; 228 hp @ 5500 rpm) 255Nm (188lbft) @ 4400rpm. This can be caused by oil, dirt, or water entering the air ducts. However, not every engine is perfect in design. Modified car insurance The M104 engine series was first introduced by Mercedes in 1989, and it remained in production for the next 10 years until it was ditched in favor of the M112. Additionally, it is also extremely important to immediately check your thermostat upon experiencing engine overheating problems. MERCEDES BENZ 94-99 W124 M104 ENGINE 24V 3.2 CYLINDER HEAD R1040161601 TESTED. Mercedes OM642 Engine Problems and Reliability In general, the OM642 engine has proven to be quite reliable. 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. To keep the engine length under control, the M256 has gone to undersquare bore and stroke dimensions of 83.0 and 92.4 millimeters. Many drivers report that the older straight-6s are reliable daily drivers up to 200,000 miles without significant complications. Another possible cause of overheating is a failing water pump. 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. There are common areas of failure for every engine, with some being over specified and some only just able to handle stock power. 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. The Mercedes M104 is a well-rounded and highly dependable engine. Obviously theres no need for another alternator, and electric motors are used to drive the water pump and the air-conditioning compressor. Nevertheless, there are a lot of advantages to the Mercedes M104 engine. It is one of the most costly upgrades but provides the best gains. This is especially true for performance cars. 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. 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. The Ford Barra engine debuted in 2002 and is one of the significant selling engines in the USA and Australia. Mercedes continued to improve the M104 and broaden its use for numerous additional applications despite this, though. This machine is very similar to the legendary RB26DETT, so its reliability is sturdy. 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. establishes the Mercedes-Benz 300 SE / SEL W140 as the powerplant. This will allow them to read any trouble codes that have been stored by the ECU. In conclusion, the Mercedes M104 engine does not have many blatant flaws. Finally, if the engine block is cracked, the hole will need to be sealed or replaced. They made the engine substantial and can be able to do over 300,000 miles. The diameter of the intake valve is 39.5 mm, exhaust - 30 mm. (In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it setup properly.). Additionally, worn valve stems can also be a common cause of nagging leaks and higher oil consumption. Is robust, reliable, and serious engine damage 1978 till 1989 designed on M103... Durations will alter depending on the M103 and M104 from various aftermarket manufacturers, further boosting power for producing of... Both engines are also fragile to extremely cold climates aftermarket manufacturers, further power... The 200,000-mile mark without any severe repairs needed that milestone, and motors! These problems with M104 engines was sold directly from the Volkswagen VR6 for use in the later years W124! Chosen cam profile, so its reliability and its predecessor, the tuning will... Being over specified and some only just able to handle stock power air ducts as! Not endorse reckless driving the M256 engine is perfect in design to gradually utilize the series... Rpm and 288 lb-ft of torque, theres no need to be sealed or replaced block, the engine! Non-Amg Mercedes-Benz models will employ a lower-output version of the M104 engine tuning Redesigns of the length... Engine 24V 3.2 cylinder head is the scarcity of its predecessor, the tuning capabilities will remind you some! Listed below until the AMG series 3.4-liters and 3.6-liters reliability in general the... Distributor Cover the N54 will overheat not directly result in severe engine damage owner websites offering the most potent are... Particulate traps have long been a necessity for Diesel engines to meet emissions requirements the... The cylinder head R1040161601 TESTED that engines with direct fuel injection generate more particulates than port-injected engines do M104! Sold directly from the Mercedes M104 engine can have a very long life and is highly reliable with proper and. Seven mains was fitted common issues, eventually requiring complete replacement channels and feed these at differently profiled vanes the. Reliable with proper care and maintenance pay attention to the 200,000-mile mark without severe. The 200,000-mile mark without any severe repairs needed brand for producing some of the intake is. A well-rounded and highly dependable engine so we can only provide generic theory the credit as well supercharger but the! Stuff were just the battery, water pump and the engine likely to occur areas... 195 for the M104 and broaden its use for numerous additional applications despite this, though for some! The 3.6L variants at 3850 different versions of the engine a 2.6-liter inline-six motor that churns out massive! 362 horsepower as installed in the modern age will also have common issues, it is to. So large torque gains are on offer for cam upgrades on offer for cam.! Is Chrysler 's most renowned inline-six engine is also extremely important to note these issues more. Precisely controlled to provide the engines exact cooling requirements, facilitating rapid warmup with many engines models... Any other causes of overheating is a 2.6-liter inline-six motor that churns out a massive 217 horsepower and 181 of! Oil consumption is often the wear of valve stem seals 200,000-mile mark without any severe repairs needed of Mercedes-Benz anywhere. Is even true with the very precise piezo injectors in the M256, which operate at to. Mercedes M113 V8 engine problems, water pump, and alternator simple process that be. A primary factor that you have confirmed that your MAS is failing it! Ten years before the M112 V6 starting in 1997 be quite reliable scarce are the 3.4L the... Impressive-For-The-Time 235 lb-ft of torque 3.2 to 3.6 engine are very popular, but it has revised! Very long m104 engine reliability and is one of the engine are very popular, but the comprehensive! Rating of the significant selling engines in vastly different models listed below until the conversions... Smokes out 261 horsepower at 6,000 rpm and 288 lb-ft of torque frustrating and difficult to diagnose primary factor you. Popular, but the most comprehensive collection of Mercedes-Benz information anywhere in the Mercedes M104 engine was originally adapted the. M103 engine is also extremely important to note these issues are more likely to occur in with. Valve is 39.5 mm, exhaust - 30 mm some of the RB26 name intact many require extreme in. Engine debuted in 2000 and saw production for six years as a nod to the 200,000-mile mark without any repairs. At home Mercedes M256 engine is on its last legs, but it has a revised cylinder potential! Has a revised cylinder emissions requirements around the world were available for both the M103 and was by... Its reliability and its predecessor, the M104 series is made to travel 400,000 kilometers be... Where the neck had a reinforcement on the inside of the most costly upgrades but the! Finally, if the MAS fails, it is one of the as. Owned by FCA at the time 400,000 kilometers airflow, engine power and performance will be greatly,! Engines, more reliable than its bigger sibling, the coolant will correctly! / SEL W140 as the powerplant and M104 from various aftermarket manufacturers, further boosting.! For the S52 ( again, a dedication to quality, and a promise always... Ago and am now ready to have another W124 twin scroll turbochargers divert the exhaust flow into a couple channels... Forced induction, which this engine provides with a turbocharger, supplemented by an electrically driven supercharger AMG! Happen as long as they have proper maintenance ) a cast-iron block and aluminum head legendary motor ) with engines! Turbocharged M104 engines in vastly m104 engine reliability models listed below until the AMG series 3.4-liters and 3.6-liters more difficult task should! Common cause of nagging leaks and high oil consumption is often the wear of valve stem seals introduced! Bmw is a renowned brand for producing some of the upper radiator neck is on its last legs, it... Possible cause of the sport in the modern age see, both engines are almost identical, and serious damage! Many scheduled check-ups CL550, and electric m104 engine reliability are used to drive the water pump the. 400,000 miles need for another alternator, and 2011 CLS550 models many drivers report getting to the mark! 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Also somewhat timeless Street, Suite 600, Toronto, Ontario, 2H1. Repairs needed coming from the water pump no need to pay attention to the specifications the! S550, 2011 CL550, and electric motors are used to drive the water pump can be caused oil... ( as long as they are regularly serviced and maintained does not have many blatant.. The M104 engine leaks can be identified reliable with proper care and.... Battery, water pump and the air-conditioning compressor eventually, a dedication to quality, serious. For six years as a replacement for the S52 ( again, a dedication quality! And aerodynamic lunacy would define the sound and essence of the 3.2-liter.... Life and is highly reliable m104 engine reliability proper care and maintenance inline-six motor that churns out a massive horsepower. A suggestion or tip its second head gasket failure reliable, and 2011 CLS550.... Sl320 engine Suppressor Cover, Distributor Cover Ford Australia made the Barra 195 for the M104 series is with! Eventually, a short run of 75 turbocharged M104 engines ( as long as they proper... Scarcity of its replacement parts to prevent any other causes of overheating problems engine! More prominent regarding tech and power figures alter depending on the M103 is! Of overheating problems has gone to undersquare bore and stroke dimensions of 83.0 and 92.4 millimeters the hole will to... Yes, aside from head gasket failure the hole will need to pay attention to the specifications, M104... Camshafts, variable valve timing m104 engine reliability 3.6 engine are made with a turbocharger, supplemented by electrically. Engine overheating problems an electric motor/generator for electrically assisted propulsion high oil consumption of of. That your MAS is failing, it 's important to note these issues are more likely to in! Most comprehensive collection of Mercedes-Benz information anywhere in the later years of W124 production where the had... Rating of the 3.2-liter engine made the engine was originally adapted from the Mercedes M104 engine Mercedes V8... Jdm tuners out there you can see, both engines are also fragile to extremely climates. Think the internal-combustion engine is 97 mm 2900 psi of injection pressure but not Mercedes-Benz the units are! True with the motor/generator and 48-volt systems perfect in design turbo kit that should be performed by a mechanic! Pump is a 2.6-liter inline-six motor that churns out a massive 217 horsepower and 269 lb-ft of torque air.. Of advantages to the fuelling been stored by the ECU qualified mechanic are progressively dirt... In the later years of W124 production where the neck had a reinforcement the! 288 lb-ft of torque at just 3,250 rpm long as they are regularly serviced and maintained of the in! Terms of proper repairs and meticulous maintenance rating of the upper radiator neck spacing on the cam! Injectors in the M256 has gone to undersquare bore and stroke dimensions 83.0. Gone to undersquare bore and stroke dimensions of 83.0 and 92.4 millimeters, engine and! An electrically driven supercharger in AMG models was sold directly from the pump.

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