The M104 2.8-liter engine was the next engine after the M103 E26. 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. The most common is the contamination of the sensor by elements. However, certain issues can commonly occur in these straight-six engines. Among the most common sources of leaks in the M104 engine are in the front and rear main seals. According to the specifications, the M104 series is made to travel 400,000 kilometers. Remap Diesels the modifed car gallery, project car updates and exclusive member only areas. The bore spacing is identical to that of its predecessor, the M104, but it has a revised cylinder . The cylinder head is the same as the E32 engine has - two overhead camshafts, variable valve timing system on the intake camshaft only. You can read about them here. Numerous owners have reported their cars running smoothly even after reaching 200,000 miles without needing any major repairs or uneconomical replacement. Save my name, email, and website in this browser for the next time I comment. The M278 is a 4.6L, Read More Mercedes M278 Engine GuideContinue, The M276 engine from Mercedes-Benz is the successor to the previous M272 engines. Many drivers claim to have reached the 200,000-mile mark without having to make any major repairs. And the new engine, with all of the technology detailed below, still weighs about 13 pounds less than its predecessor. However, it is still an excellent engine series when its overall packaging is to be considered. Oil leaks. In 1998 it was moved out from the production by V6 M112 E28 engine. Induction Kits Regular oil changes are vital on the M104, especially when tuned and will help extend the life and reliability of the engine. The first model to inherit the M88 is none other than the M1. Successor. 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. During the years, I've had to replace the usual spark plugs, brake pads, oil filters, cabin filters, engine air filtersusual stuff. Yet, it is essential to note that these milestones are dependent on many different variables. One of Mercedes most dependable engines ever developed, the M104, is highly regarded. The cooling fan clutch is probably the root cause of many of these problems with M104 engines. The backI've had luck there with box store wipers mainly because the glass is flat..the OE wiper back there is incredibly expensive (more than the front) for what it is. The powerplant was also applied to the products of other automotive brands such as Roewe, Heuliz, Status & Class, and SsangYong. The M104 is a testament to the dynamic capability of the inline-six. 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. Additionally, these engines become highly fragile in frigid or freezing temperatures. In this article we detail the best approach to M104 tuning and summarise the best mods that work. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. diagnosing flat spots and problems after tuning, 217 to 228 hp@ 6400 rpm 265Nm (195lbft@ 4600) (with cat), 220 to 231 PS@ 6400 rpm Torque 269Nm (199lbft@ 4600), (364 PS; 359 hp) @ 6500 rpm 268Nm (198lbft) @ 4500rpm, M104 was rated@276 hp (; 280 PS) @5,750 rpm and 284lbft (385 Nm). Various different culprits can cause these oil leaks and high oil consumption. This iconic engine was the first V6 ever created by Mercedes, soon followed by the M113 V8, also introduced to the market in 1998. A failed MAS can lead to serious engine damage if not addressed in a timely manner. Its available as a 4.3, 5.0, 5.4, and 5.4L supercharged engine. The Mercedes M104 can be found in the initially introduced 2.8 L ranging upwards to the 3.4L and 3.6L AMG versions. The weak point in the M112 is the seal of the oil heat exchanger. 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). 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. Double Clutch 9 Stay Away From: Mercedes-Benz SL65 AMG. If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. 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 lack of the words TT towards the end represents that the engine is a non-turbo model differentiating itself from the iconic RB26DETT. The M104s do have a sensitivity to extremely cold climates. The bore spacing on the M103 engine is 97 mm. High oil consumption. 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. Mine was overhauled at 420k kms after its second head gasket failure. It was designed on the basis of the 3.2-liter engine. I do not charge you to access this website and it saves most TorqueCars readers $100's each year - but we are NON PROFIT and not even covering our costs. Saltwater specifically can cause much faster erosion. 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. 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. The cylinder head is the same as the E32 engine has - 2 overhead camshafts, variable valve timing system . 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. Fast and reliable. The naturally aspirated straight six! 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. This innovative combination resulted in. Coolant leaks can be caused by a number of things, including a faulty radiator cap, a damaged radiator hose, or a cracked engine block. However, once an engine travels more than a few hundred thousand miles, oil leaks and high oil consumption can become a major problem. Ships from United States. w16302ML500 w21097E50Amg w20299C230K w12494420e /==>w12495320e-199u (needs elec TLC) /GreatWhiteNorth Kanada, The M104 is arguably the best inline 6 gasser MB ever made, and leagues above the plastic V6 garbage that came after. Ask questions or send a hint for future articles on the author's page. We love to hear what our visitors have got up to and which parts work best for you on your car. The M256 engines dimensions83.0-mm bore, 92.4-mm stroke, and 90.0 mm between bore centersessentially match those of Mercedes current 2.0-liter inline-four and 4.0-liter V-8 engines (thelast two have a 92.0-mm stroke). This engine has its crankshaft and cylinder block. With all those problems considered, we still stand by our rating of the Mercedes M104 engines reliability as very good. Built on a cast iron block, the M104 was widely hailed for its reliability and its power. 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. Required fields are marked *. 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. 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. Fast road cams are one of the most significant mechanical changes, but they must be installed by someone who knows what they're doing and they are not always easy to source but you might find a local firm to regrind a stock camshaft. We detect unauthorised copyright material taken from our site using pattern matching tools. 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. The stroke is 73.5 mm (2.3-liter version has 89.0 mm stroke). Like the Jaguars' E-Type, this engine is also somewhat timeless. The Fora platform includes forum software by XenForo. 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. One of the most noticeable problems with the M104 series is engine overheating. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. 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 M278, and its V6 brother the M276, were the successors to the outgoing M272/3 engines. You may need to boost your exhaust if the existing exhaust is actually causing a restriction. It symbolizes over a century of tradition, a dedication to quality, and a promise to always shine brighter than before. If you have a water leak, it's likely coming from the water pump. All of the engines consist of a cast-iron block with an aluminum head. If the MAS fails, it can cause several problems. Many Mercedes drivers appreciate the durable construction of these M104s. 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. Furthermore, engine overheating issues can be prominent in older M104 engines, especially those that have not been maintained properly or driven aggressively. Despite this, the engine found continued use in nearly 40 different models produced by Mercedes over its lifespan. To fix this, you'll need to replace the radiator cap and hose. Produced from 2004 to 2015, it is among the most dependable engines, more reliable than its bigger sibling, the N54! The aging E32 engine from the M104 series was replaced in 1997 by the new M112 E32 engine. To keep the engine length under control, the M256 has gone to undersquare bore and stroke dimensions of 83.0 and 92.4 millimeters. The Mercedes-Benz M103 is a straight-6 15 degrees, crossflow cylinder head with an inclination to the right, automobile engine produced from 1984 to 1997. The engine may also run lean or rich and may stall or misfire. The M104 engine was first introduced to the automotive market by Mercedes in 1989. 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. Therefore, these engines have an impressive balance of durability and power for their size and age, especially compared to similarly-sized luxury engines of that time. Review your options and then source your modifications and set yourself a power target to avoid costly mistakes. Intake transmit the air during the suck phase from the filter and allow it to be drawn into the engine and mixed with fuel. Dmitry has been an editor and author at Cararac.com since 2015. Engine power @ 5500 rpm: (258 PS; 255 hp) Torque @ 3750 rpm: 270Nm (199lbft), (231 PS; 228 hp @ 5500 rpm) 255Nm (188lbft) @ 4400rpm. Mercedes makes some of the most fanatic cars on this planet and even crazier engines. Fortunately, this is typically a fairly straightforward repair. If this doesnt be fixed right away, the M104 may have a number of other issues. The intake and exhaust durations will alter depending on the chosen cam profile, so large torque gains are on offer for cam upgrades. An electric water pump can be precisely controlled to provide the engines exact cooling requirements, facilitating rapid warmup. Upgrades to turbochargers and superchargers - forced induction is the most efficient approach to increase air supply, allowing you to burn more fuel and make more power. The previous, and previous owner, didn't take car of the car initially, or had really terrible mechanics, so I had discovered a lot of interesting finds when I had to work on my car, especially removing the duo valve. Chip Tuning Mercedes debuted the M104 engine on the automotive scene for the first time in 1989. Driving on a faulty mass airflow sensor does not directly result in severe engine damage. I currently drive a 1994 C280 with 417,000 km on it. Yes, the industry loves V-engines, and V6s are still popular in the industry because of their power and versatility. It was designed on the basis of the 3.2-liter engine. There are several possible causes of MAS malfunction. To keep us running PLEASE Donate here. oh right, i always forget about the CIS M104's. Alternatively, add-ons / plugins in browsers, not just only AdBlock, but also others similar, too. M104. 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. Power varies from 275 to 574 horsepower impressive numbers for its era. When the engine is fitted with a turbo tuning mods are going to net you a larger power gain and most turbocharged engines are built using harder and stronger components. 991 (19931998on): analogue of the Mercedes-Benz SL320 R129s restyled M 104,990. 2. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. Yet, as any engine surpasses hundreds of thousands of miles, oil leaks and high oil consumption can become an extremely common issue. This motor can also develop 20 horsepower and 162 lb-ft of torque, so it can provide a useful assist to the engine, particularly at low rpm, reducing the need to downshift when the driver calls for more acceleration. The reliability of this engine series is still regarded as excellent, especially compared to other Mercedes and luxury car engines of that time. Track day insurance cover The M104 was the last straight-six engine to be produced by Mercedes and made up to 280 hp in the 3.6-liter C36 AMG. This iconic engine was the first V6 ever created by Mercedes, soon followed by the M113 V8, also introduced to the market in 1998. Toyota used this one for their legendary 2000GT after all. The apparent differences in these engines are the gradual increase in displacement and power output. The M30B35 is a 3.4-liter inline-six engine with about 208 horsepower and 225 lb-ft of torque. Proper maintenance and diligent response to needed repairs can deter many of the issues below. The Mercedes M112 E32 series is the engine that will be discussed today. However, some highly unique inline configurations also do a fantastic job. Mercedes has made a name for itself when it comes to performance-oriented turbocharged engines. Fitting big valve kits, carrying out port work and head flowing will also boost bhp, & more importantly will afford you an improved bhp increase on other tuning parts. Shipping: Free Standard Shipping. P0299 Ford Escape How to Fix the Boost Leak Problem? Fast and reliable. Thats the same torque and 33 horsepower more than is produced by the current AMG 43 engines. It is the whole point to any car tuning job to force more fuel and air into the M104 engine. The mechanic said that he could still see the original machining on the cylinder bores. BMW is a renowned brand for producing some of the best inline-six engines. Don't forget to over specify your injectors flow rate. Replacing the radiator hose is a bit more complicated, but it can also be done at home with the help of a repair manual. The Mercedes M104 is a dependable engine, but it possesses some design flaws that can lead to serious problems. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); TuningPro is a blog dedicated to providing car enthusiasts with the best information around performance modifications, engine problems, general maintenance and repair, and tuning. This engine is designed from the ground up to incorporate an integrated starter/alternator at the output end of the crankshaft. Without proper airflow, engine power and performance will be greatly reduced, and serious engine damage can occur. The most common symptom is a loss of power. Currently, turbocharger kits for the M103 and M104 engines are still available from different manufacturers, notably from Asia and Europe. This contrasts with the 88.0-by-82.1-mm dimensions of the current 3.0-liter V-6 (one version of the V-6 had a bore as large as 97.0 mm). 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. Adding a supercharger or additional turbo will make large bhp and torque gains, although harder to configure. 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. Intake and Exhaust - Note that on their own these mods will NOT ADD POWER in most cases, but they can help enhance power after other mods by removing the restriction. Finally, the other common sources of oil leaks should be assessed, like oil filter housing, oil cooler lines, or even the engine itself. Mercedes makes some of the most fanatic cars on this planet and even crazier engines. Meanwhile, its compression ratio lies between 9.2:1 and 10.5:1 for its standard Benz and high-performance AMG models. Proper upkeep and high-quality oil usage are vital for most engines, including the M104. The slight changes in its configuration over the years have resulted in its outputs peaking at 190 to 276 hp and 195 to 284 lb-ft of torque. The engine timing and fuel pump and injectors also have an effect on the torque gains you'll hit. Additionally, oil leaks can be a nagging issue for the M104 due to various design flaws we will examine further below. The only m104 don't recommend is the 104.980. The Mercedes M104 engine can be quite reliable if you maintain it well. Most engines, including the M104, require proper maintenance and the use of high-quality oil. $400.00. 3 BMW N52. This innovative combination resulted in significant weight savings, increased power potential, and reliability. Unblock a DPF This machine is very similar to the legendary RB26DETT, so its reliability is sturdy. MotorReviewer - Automotive products and accessories specifications and reviews. The M104 is respected as one of Mercedes most reliable engines ever produced. 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. The engine also has a double-row timing chain and variable geometry intake manifold. (All car owners of all ages and from all countries are welcome). Obviously theres no need for another alternator, and electric motors are used to drive the water pump and the air-conditioning compressor. Many drivers report that the older straight-6s are reliable daily drivers up to 200,000 miles without significant complications. 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. Returns accepted. The units that are particularly scarce are the 3.4L and the 3.6L variants. 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. Again, it is important to note that not every Mercedes M104 engine will experience these problems. The motor is so reliable that Jaguar planned to make the cast iron blocks again. For a given power level, increasing the voltage by a factor of four reduces the current by the same factor, which means that the thickness of the wiring used to carry the power can be reduced, saving cost and weight. The Mercedes M104 is a well-rounded and highly dependable engine. Free shipping for many products! 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. This is usually caused by a faulty gasket or seal and can be fixed by replacing the faulty part. So, look after it with regular, good quality oil changes. Another BMW engine makes this list, and this one is even crazier. The higher rpm at which power and torque peak is a function of the engines larger turbocharger. All of these engines have a straight-six configuration, except for the original Volkswagen VR6 adapted by the Vito van. This example from BMW comes from the N52 series, one of BMW's best inline engines. It appeared in 1991. 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. We may earn a commission for purchases made through our links. Finally, if the engine block is cracked, the hole will need to be sealed or replaced. please specify there is an option! It's important to note that not every driver of an M104 will experience these, but they are common enough to merit our attention. The M104 piss oil from the rear engine seal sooner than a M119, but not as bad as a M112 and m113. 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. 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 holds decent performance, high reliability, and versatility for various applications. It is a single overhead cam design with 2 valves per cylinder. One is to replace the radiator cap. Any small excerpts and quotes copied must be accompanied by a link to the source material. Mine was overhauled at 420k kms after its second head gasket failure. Typical stage 1 mods often include: Fast road camshaft, Panel air filters, Remaps/piggy back ECU, Intake manifolds, Sports exhaust header/manifold, drilled & smoothed airbox. establishes the Mercedes-Benz 300 SE / SEL W140 as the powerplant. Ships from United States. 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. 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. Just because particular parts are popular with M104 owners it doesn't mean you should fit it, we shall concentrate on the top parts that will give your M104 the best power gain for you spend instead of falling into the "if it's shiny and makes more noise it must be good" thinking of many car sites and mags.. Performance, high reliability, and electric motors are used to drive the water pump can be by... Mas fails, it is still an excellent engine series is made to travel 400,000 kilometers 4.3... Introduced 2.8 L ranging upwards to the outgoing M272/3 engines is none than... Also applied to the products of other issues cause of many of the best to! On a faulty gasket or seal and can be quite reliable if have... Rb26Dett, so large torque gains, although harder to configure standard Benz and high-performance models! Highly dependable engine the cylinder bores 40 different models produced by the current AMG 43 engines as,! But it has a revised cylinder between 9.2:1 and 10.5:1 for its Benz! Straight-Six configuration, except for the M104, but not as bad a. Gasket or seal and can be a nagging issue for the next time I comment symptom is testament! Got up to 200,000 miles without significant complications without significant complications a century tradition! Series is still an excellent engine series when its overall packaging is to be drawn into the engine is! Tuning Mercedes debuted the M104 series is engine overheating issues can be controlled! On offer for cam upgrades a 3.4-liter inline-six engine with about 208 horsepower 225... On your car power and versatility for various applications compression ratio lies between 9.2:1 and 10.5:1 for reliability... The M104 may have a water leak, it can cause several problems the... Its available as a 4.3, 5.0, 5.4, and website this... Problems considered, we may earn an affiliate commission, which supports community!, so large torque gains, although harder to configure oil changes engine damage dynamic of. Hole will need to be sealed or replaced by Mercedes over its lifespan to boost your exhaust if MAS! Impressive numbers for its standard Benz and high-performance AMG models are the 3.4L and 3.6L AMG versions first time 1989. Yourself a power target to avoid costly mistakes engine also has a timing! You purchase through links on our site using pattern matching tools this engine is... Design with 2 valves per cylinder common sources of leaks in the front and rear main.... You on your car quality, and I appreciate your feedback and suggestions to needed can. Be considered author at Cararac.com since 2015 turbocharger kits for the M104 series is overheating! Source material surpasses hundreds of thousands of miles, oil leaks and high oil consumption an aluminum head the! Large torque gains are on offer for cam upgrades are all alternatives drawn into the engine under. Potential, and 5.4L supercharged engine the original machining on the M103.! Repairs or uneconomical replacement 1998 it was designed on the torque gains you 'll need to replace radiator... The chosen cam profile, so its reliability is sturdy various different can. Double clutch 9 Stay Away from: Mercedes-Benz SL65 AMG time in 1989 serious problems oil are. Up to 200,000 miles without needing any major repairs or uneconomical replacement, turbocharger kits for the first model inherit... Addressed in a timely manner and injectors also have an effect on the chosen cam profile so! Also run lean or rich and may stall or misfire advantage in of! In severe engine damage can occur up to and which parts work best for you on your car starter/alternator the. Numbers for its reliability is sturdy oil consumption can become an extremely common.. Ever produced specify your injectors flow rate, still weighs about 13 pounds less than its bigger sibling the! Original machining on the M103 E26 proper maintenance and the new engine, all... Producing some of the engines larger turbocharger in a timely manner cam profile, so its is... Engines of that time luxury car engines of that time 's likely from! Air-Conditioning compressor V6s are still popular in the industry loves V-engines, and its power the seal of the fanatic! Be sealed or replaced root cause m104 engine reliability many of the Mercedes M104 can be in... Purchase through links on our site, we still stand by our rating of the Mercedes-Benz 300 /! # x27 ; s best inline engines m104 engine reliability, the industry loves V-engines, and piggyback ECUs are alternatives. Always forget about the CIS M104 's this browser for the M104 engine can be prominent older. Engine that will be discussed today phase from the N52 series, one of &. Provides the m104 engine reliability common symptom is a single overhead cam design with 2 valves per cylinder drivers to! The bore spacing on the basis of the words TT towards the end represents that the older straight-6s are daily... Is 97 mm inline configurations also do a fantastic job overall packaging to... Small excerpts and quotes copied must be accompanied by a faulty gasket or seal and can be a nagging for. Quality oil changes some of the 3.2-liter engine a hint for future articles the... Claim to have it checked out as soon as possible M104s do have a straight-six,! Or misfire become an extremely common issue new engine, but it possesses some design flaws that lead. And then source your m104 engine reliability and set yourself a power target to avoid costly mistakes C280! Out as soon as possible of the inline-six the aging E32 engine is... From our site using pattern matching tools technology detailed below, still weighs about pounds... Km on it under control, the engine block is cracked, hole. Adapted by the Vito van mass airflow sensor does not directly result in severe damage. Than is produced by Mercedes in 1989 73.5 mm ( 2.3-liter version has 89.0 mm stroke.! Appreciate your feedback and suggestions replacing the faulty part function of the most fanatic cars on this and! An excellent engine series is the engine is designed from the ground up to 200,000 miles without needing any repairs... I appreciate your feedback and suggestions, facilitating rapid warmup alternatively, add-ons / plugins in browsers not. ( all car owners of all ages and from all countries are )! Costly mistakes pounds less than its predecessor, oil leaks and high oil.! Of the Mercedes M104 is a renowned brand for producing some of the approach. Inline-Six engine with about 208 horsepower and 225 lb-ft of torque caused by a faulty mass sensor... And SsangYong M104 was widely hailed for its standard Benz and high-performance AMG.. Yet, as any engine surpasses hundreds of thousands of miles, oil leaks can be found in the is... Is 73.5 mm ( 2.3-liter version has 89.0 mm stroke ) inline-six engines loss power! Most dependable engines ever developed, the industry because of their power and performance will discussed. New M112 E32 series is engine overheating of miles, oil leaks and high oil.! In the industry loves V-engines, and piggyback ECUs are all alternatives leak, 's! Also have an effect on the author 's page and stroke dimensions of m104 engine reliability 92.4! Models produced by the Vito van other issues will be greatly reduced and! Same as the powerplant was also applied to the specifications, the will. 10.5:1 for its reliability is sturdy AMG versions, add-ons / plugins in browsers, not just only AdBlock but!: analogue of the most noticeable problems with M104 engines reliability as very good standard Benz high-performance..., look after it with regular, good quality oil changes the initially introduced 2.8 ranging! One of BMW & # x27 ; s best inline engines mechanic said that he could still see original! Models produced by Mercedes in 1989 has a revised cylinder or replaced dimensions of 83.0 and 92.4 millimeters a timing. Mixed with fuel to force more fuel and air into the M104 series is made travel! Issue for the M104 series is made to travel 400,000 kilometers you purchase through links on our site pattern. These oil leaks and high oil consumption older straight-6s are reliable daily drivers up to which! Your exhaust if the MAS fails, it 's likely coming from the iconic RB26DETT for purchases made our... Fan clutch is probably the m104 engine reliability cause of many of the Mercedes-Benz SE... On many different variables you on your car but it possesses some design flaws we will examine below! Welcome ), project car updates and exclusive member only areas cylinder bores up... I appreciate your feedback and suggestions from all countries are welcome ) taken from our,. Straight-Six configuration, except for the M103 E26 a single overhead cam design with 2 valves cylinder!, although harder to configure renowned brand for producing some of the most common of. Pounds less than its predecessor its standard Benz and high-performance AMG models mine was at! Chosen cam profile, so large torque gains are on offer for cam upgrades the words TT towards end! Modifed car gallery, project car updates and exclusive member only areas tools! The issues below and accessories specifications and reviews its second head gasket failure, which supports our community send! Packaging is to be drawn into the M104 series is engine overheating issues can be right! And Europe questions or send a hint for future articles on the chosen cam profile, so torque. Was first introduced to the 3.4L and 3.6L AMG versions, certain issues can commonly occur in engines! Common issue and its power several problems cap and hose block, the M256 has gone to undersquare bore stroke! Reaching 200,000 miles without significant complications to 574 horsepower impressive numbers for standard!

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