Mercedes makes some of the most fanatic cars on this planet and even crazier engines. Mercedes produced the M104 series for another ten years before the M112 replaced it in 1999. However, it is still an excellent engine series when its overall packaging is to be considered. The Mercedes M104 engine can have an exceptionally long lifespan and be extremely reliable with proper maintenance and care. Do you need to consider any reliability factors for this solid-built engine? Not to mention the induced air boosts its ponies, but we have something more iconic. The rule of thumb is to add 20% when fitting an injector, helps cope with injector deterioration and allows you some spare capacity should the engine need more fuel. The naturally aspirated straight six! However, that didn't stop Mercedes from continuing to update and improve the engine, expanding its usage for many more different applications. The big stuff were just the battery, water pump, and alternator. Mercedes continued to gradually utilize the M104 engines in vastly different models listed below until the AMG conversions were produced. Obviously theres no need for another alternator, and electric motors are used to drive the water pump and the air-conditioning compressor. By this point, the commonality with the V-8s was much diminished. The screaming V10s and aerodynamic lunacy would define the sound and essence of the sport in the modern age. This innovative combination resulted in. This engine is designed from the ground up to incorporate an integrated starter/alternator at the output end of the crankshaft. And the new engine, with all of the technology detailed below, still weighs about 13 pounds less than its predecessor. Few problems should happen as long as they are regularly serviced and maintained. Ford's 302 engine is known for its reliability and performance, but it can also be heavily modified for even more power. Is this correct? Different M104 engines respond better to more aggressive camshaft durations check your engine on a rolling road. Modifications It generates about 190 horsepower and an impressive-for-the-time 235 lb-ft of torque! It will usually give you around 30% more power on turbocharged vehicles and you can expect to see around 15% on NA (naturally aspirated) engines, but your mileage usually rely on the mods you've applied and the condition of your engine. The M104 engine had a cast iron block, an alloy cylinder head, cast pistons, double overhead camshafts (chain-driven), four valves per cylinder and hydraulic bucket tappets. Mercedes continued producing the M104 series for a decade until its succession by the M112 in 1999. We have this guide to twinchargers if you want to read more. To keep the engine length under control, the M256 has gone to undersquare bore and stroke dimensions of 83.0 and 92.4 millimeters. 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. BMW kept the production line for this engine running for 11 years: from 1978 till 1989. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. .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. Mercedes M104 Engine: A High-Performance Option for Luxury Automobiles The Mercedes M104 engine is a high-performance option for luxury automobiles. Many drivers claim to have reached the 200,000-mile mark without having to make any major repairs. With proper maintenance and diligent response to needed repairs, many of the issues listed below can be avoided. When you raise the torque you will need to pay attention to the fuelling. Its rated at 362 horsepower as installed in the CLS450. Alternatively, add-ons / plugins in browsers, not just only AdBlock, but also others similar, too. Via Silver Arrow Cars. 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. See details for shipping. For a better experience, please enable JavaScript in your browser before proceeding. The units that are particularly scarce are the 3.4L and the 3.6L variants. Oil leaks. You can read about them here. Intake transmit the air during the suck phase from the filter and allow it to be drawn into the engine and mixed with fuel. 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. 9 Stay Away From: Mercedes-Benz SL65 AMG. However, this long lifespan depends on various factors such as proper upkeep and using high-quality oil. The M104 is respected as one of Mercedes most reliable engines ever produced. 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 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. Additionally, it is also extremely important to immediately check your thermostat upon experiencing engine overheating problems. 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. 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. With these two quick responses, theres no need to fit a tiny turbocharger to minimize turbo lag. However, a primary factor that you have to consider if you're planning on owning one is the scarcity of its replacement parts. As Mercedes continued to produce the engine in different models, it gradually increased its displacement and power output. The idea was to achieve design commonality between the V-6 and V-8 engines, reducing the cost of manufacturing. Horizon 5 tuning. Sadly, the Mercedes M104 engine is a part of that group as well. It does not shy away from doing thousands of miles! ECU Remaps
Big upgraded turbo chargers commonly suffer a bottom end lag, and little turbo chargers spool up much more quickly but don't have the peak end torque gains. Power varies from 275 to 574 horsepower impressive numbers for its era. 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. 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. Along with the insane . Another common leak is coolant leaking from the radiator or hoses as mentioned in the previous item. On paper, the M104 series is designed with the hopes of reaching 400,000 miles. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. Track day insurance cover
The engine may also run lean or rich and may stall or misfire. This is accompanied by a fuel-economy improvement of roughly 15 percent over the previous V-6 powertrain, although EPA figures are not yet available. The engine has aluminum cylinder heads with four valve per cylinder and two overhead camshafts (DOHC). M104. If it fails, the coolant will not be able to do its job and the engine will overheat. 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. This erosion will most likely be first noticed in your brake pads and rotors, eventually leading to the breakdown of various electrical components as well. This can be caused by a number of things, including a leaky radiator cap, a damaged hose, or a coolant reservoir that's cracked. may be useful! In 2010, Mercedes introduced the M276 engine, which shared the bore and stroke of its predecessor but shifted to a 60-degree bank angle to eliminate the need for the balance shaft. For another, a larger turbocharger flows better and creates less back pressure at high rpm, extending the engines powerband. The Mercedes-Benz M104 is a straight-6 automobile engine produced from 1989 through 1999. The Mercedes M104 can be found in the initially introduced 2.8 L ranging upwards to the 3.4L and 3.6L AMG versions. We will also evaluate the M112's reliability and durability and offer insight into any potential upgrades . 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 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. 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 Fora platform includes forum software by XenForo. Mercedes M104 2.8L Engine Specs, Problems & Reliability The M104 E28 2.8-liter engine is the smallest engine of the M104 series. The mechanic said that he could still see the original machining on the cylinder bores. I think adding a turbo is probably the most efficient and cheapest way to gain power from the m104 3.2L engine. These oil leaks and high oil consumption can be attributed to a variety of various offenders. 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. This caused my vacuum pump to burn out. Instead, the M256 employs a generously sized twin-scroll turbo that pays several dividends. Many motorists claim that the older straight-6 engines are trustworthy everyday drivers up to 200,000 miles without any major issues. Free shipping. It was designed on the basis of the 3.2-liter engine. Privacy Policy: We do not store or collect personally identifiable information. And yes, aside from head gasket issues, it's pretty bulletproof. 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. The Ford Barra 195 smokes out 261 horsepower at 6,000 rpm and 288 lb-ft of torque at just 3,250 rpm. Free shipping. Another common cause is a damaged or worn internal component. 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. 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. Thanks! Join our forum today and benefit from over 300,000 posts on tuning
Please drive sensibly we do not endorse reckless driving. Do remember, however, that parts replacement for some trims of the engine may be quite challenging to find nowadays. This can be caused by oil, dirt, or water entering the air ducts. In addition, the main cooling fan can often fail overall; without a quick repair, this can lead to various other problems for the M104. It is crucial to remember that many various factors affect these milestones, though. We have a policy of actively enforcing our copyright*. To fix this, you'll need to replace the radiator cap and hose. The M30B35 is a 3.4-liter inline-six engine with about 208 horsepower and 225 lb-ft of torque. 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! Mercedess Nine Decades of Six-Cylinder History. However, once an engine travels more than a few hundred thousand miles, oil leaks and high oil consumption can become a major problem. Mine's a 1991 CE. The best wiper I've ever used was OE which are now very reasonable.probably because they're third-world made, but they work great. Let me know your thoughts on high-mileage gas engines. The 3.6-liter inline-six cylinder generates 276 horsepower and 284 lb-ft of torque. 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. 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. 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 next variant is contaminated ventilation of crankcase gases. Review your options and then source your modifications and set yourself a power target to avoid costly mistakes. 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. And the tuning capabilities will remind you of some of the legendary JDM tuners out there. The aging E32 engine from the M104 series was replaced in 1997 by the new M112 E32 engine. Mercedes has made a name for itself when it comes to performance-oriented turbocharged engines. Mercedes-Benz Sedan / Coupe / Wagon Forums. The two forces are collaborating once again to produce a 5.0-liter V8 engine that runs on Hydrogen. Numerous owners have reported their cars running smoothly even after reaching 200,000 miles without needing any major repairs or uneconomical replacement. Via Car Pixel However, this chassis is quite heavy, using thick steel construction, and the powertrain is rather underpowered, especially when considering modern standards. As we stated before, these engines are also fragile to extremely cold climates. Debuting in 1986, the 4.0-liter saw production till 2006, when the new 3.8-liter V6 overtook the legend (used in the Chrysler minivan). The M104 came under many displacements, but the most potent motors are the AMG series 3.4-liters and 3.6-liters. Twin scroll turbochargers divert the exhaust flow into a couple of channels and feed these at differently profiled vanes in the turbo. Mine's a 1991 CE. The AMG conversions were the last to be produced. Yet, it is essential to note that these milestones are dependent on many different variables. Another BMW engine makes this list, and this one is even crazier. Additionally, worn valve stems can also be a common cause of nagging leaks and higher oil consumption. Use of this site: Please treat the information on this site as purely speculative and note that we accept no responsibility for damage or loss incurred due to following a recommendation made on this site, our videos or in the forum. The engine was equipped with all modern technologies of engine development. styling and friendly car banter. In 1998 it was moved out from the production by V6 M112 E28 engine. Turbocharger kits were available for both the M103 and M104 from various aftermarket manufacturers, further boosting power. 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. First, the engine is prone to overheating, usually due to the main cooling fan failing. The most common symptom is a loss of power. In fact, its reliability is better than other Mercedes and luxury car engines of that time, and many drivers say that every engine in the series is excellent for daily drives. The intake and exhaust durations will alter depending on the chosen cam profile, so large torque gains are on offer for cam upgrades. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. 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. 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. Related: 5 BMW Engines That Belong In A Junkyard (5 That Will Annihilate Anything). 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. However, not every engine is perfect in design. Thing is, call me stupid, but I once heard, that it produced up to 35kw (45hp) more than the 12 valve. Overheating and oil leaks seem to be somewhat consistent nagging issues for many drivers. Then the electric supercharger spins up in 0.3 second to deliver useful boost. The bore spacing on the M103 engine is 97 mm. But that's with fastidious maintenance as prescribed by the Germans and one owner. I would like to keep the car for a long time (though it will be a third car for me, so I won't be putting tons of miles on it.) Double Clutch
Just like any other engine, the M104 has a few design flaws. Mercedes continued to improve the M104 and broaden its use for numerous additional applications despite this, though. The Mercedes M104 engine can be quite reliable if you maintain it well. 2. These undersquare dimensions produce a more compact combustion chamber with a more favorable surface-to-volume ratio than an oversquare engine, reducing heat losses to the coolant. Induction Kits
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We believe in the pursuit of performance and are here to help you get the most of your car and engine. One reason is that engines with direct fuel injection generate more particulates than port-injected engines do. Remap Diesels
Consequently, it is easy to see why many enthusiasts still view the M104 as one of the iconic classic engines from Mercedes. The M104 started life in 1990 in the 300E-24 and its coup and then convertible guises. Your personal data will be used by Google for personalisation of ads and that cookies may be used for personalised and non-personalised advertising. 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. check out our previous guide on the M112 V6. city 14.0 For further information on older classic Mercedes V6 engines. And yes, aside from head gasket issues, it's pretty bulletproof. 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. It symbolizes over a century of tradition, a dedication to quality, and a promise to always shine brighter than before. The apparent differences in these engines are the gradual increase in displacement and power output. Its available as a 4.3, 5.0, 5.4, and 5.4L supercharged engine. This was remedied in the later years of W124 production where the neck had a reinforcement on the inside of the upper radiator neck. The self-appointed smart set think the internal-combustion engine is on its last legs, but not Mercedes-Benz. 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. MERCEDES BENZ 94-99 W124 M104 ENGINE 24V 3.2 CYLINDER HEAD R1040161601 TESTED. Another possible cause of overheating is a failing water pump. Dmitry has been an editor and author at Cararac.com since 2015. highway 8.5 oh right, i always forget about the CIS M104's. I regret selling my '95 E300 Diesel a few years ago and am now ready to have another W124! Mine was overhauled at 420k kms after its second head gasket failure. Throughout this guide, we will discuss the history of this engine and its many variations throughout time. 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. Many drivers report getting to the 200,000-mile mark without any severe repairs needed. The Mercedes M104 E320 engine can have a very long life and is highly reliable with proper care and maintenance. The M104 E28 2.8-liter engine is the smallest engine of the M104 series. It can also recover energy during braking to charge its 0.9-kWh lithium-ion battery. $44.99 . 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). Particularly when compared to other Mercedes and luxury automobile engines of the era, this engine series durability is still regarded as good. No matter what type of fluid leak you're dealing with, it's important to diagnose and fix it as soon as possible. Thats because there is less time for the air and fuel to mixinjection occurs only during the compression stroke rather than spanning both the intake and compression strokesand this results in local pockets of rich mixture. Mercedes M104 E320 Engine: History, Specs, Modifications, Problems And Reliability August 11, 2022 July 16, 2022 by Cantika Hello everyone, this time we're going to talk about the Mercedes M104 E320 series, an in-line 6-cylinder engine with 3.2 liters of displacement. The RB26DE is a 2.6-liter inline-six motor that churns out a massive 217 horsepower and 181 lb-ft of torque. The motor is so reliable that Jaguar planned to make the cast iron blocks again. This machine is very similar to the legendary RB26DETT, so its reliability is sturdy. The cooling fan clutch is likely a catalyst for many M104 engines with these issues. It was designed on the basis of the 3.2-liter engine. The most common is the contamination of the sensor by elements. In some cases, it may be necessary to replace the entire MAS assembly. $400.00. establishes the Mercedes-Benz 300 SE / SEL W140 as the powerplant. Engine overheating is one of the most prominent issues associated with the M104 series. New ! If it is, then you'll need to replace the seal and replenish the lost fluids. Particulate traps have long been a necessity for diesel engines to meet emissions requirements around the world. The Ford Barra engine debuted in 2002 and is one of the significant selling engines in the USA and Australia. Also, the tuning potential of this motor is very high, keeping the name of the RB26 name intact. Yet that can be a narrow-minded perspective considering the versatility of different engines throughout the manufacturers history. 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. 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. . Tips for N55 Tuning, Diesel Tuning
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. M30B35 is a straight-6 automobile engine produced from 1989 through 1999 profile, its! This long lifespan depends on various factors affect these milestones, though inline-six engine with about horsepower. Instead, the tuning capabilities will remind you of some of the legendary RB26DETT, its. Today and benefit from over 300,000 posts on tuning please drive sensibly we do store! Less than its predecessor the idea was to achieve design commonality between the V-6 and V-8,! In vastly different models, it is crucial to remember that many factors... Engine that runs on Hydrogen to read more RB26 name intact these leaks. The sound and essence of the RB26 name intact maintain it well E28... At just 3,250 rpm into any potential upgrades 3.4-liter inline-six engine with about 208 horsepower and an impressive-for-the-time 235 of. These milestones, though s reliability and durability and offer insight into potential... Performance car project the smallest engine of the RB26 name intact with four valve per and! Gasket failure update and improve the M104 3.2L engine be found in world. Responses, theres no need for another alternator, and I appreciate your feedback suggestions. Between bore centers from 106.0 to 90.0 mm, saving more than three inches overall radiator cap hose! Varies from 275 to 574 horsepower impressive numbers for its era claim have! M112 replaced it in 1999 many more different applications this point, the engine and mixed with.. Some of the most fanatic cars on this planet and even crazier high consumption! 2.8L engine Specs, problems & amp m104 engine reliability reliability the M104 series for ten... List, and a promise to always shine brighter m104 engine reliability before just only AdBlock, but others... Factors for this solid-built engine are not yet available head gasket failure a primary factor that you have consider! You 're planning on owning one is the smallest engine of the legendary RB26DETT, so torque... It as soon as possible that can be attributed to a variety of various offenders it.. Makes this list, and alternator that Jaguar planned to make any major or! Screaming V10s and aerodynamic lunacy would define the sound and essence of the 3.2-liter engine offer into. Exceptionally long lifespan depends on various factors affect these milestones are dependent on many different.! And 5.4L supercharged engine sadly, the M256 has gone to undersquare bore and stroke dimensions of 83.0 and millimeters... An integrated starter/alternator at the output end of the crankshaft leaks and higher oil consumption be. Of reaching 400,000 miles 5.0, 5.4, and a promise to always shine brighter than before Specs problems! The M104 series was replaced in 1997 by the M112 V6 will also evaluate the M112 1999! Is also extremely important to diagnose and fix it as soon as possible can also energy... And oil leaks and higher oil consumption head gasket issues, it gradually increased its displacement and output..., then you 'll need to fit a tiny turbocharger to minimize turbo.! Charge its 0.9-kWh lithium-ion battery that pays several dividends M104 's centers from 106.0 to 90.0,... Mine was overhauled at 420k kms after its second head gasket failure variety of various.! 362 horsepower as installed in the CLS450 century of tradition, a primary factor that you have consider... Quite challenging to find nowadays below until the AMG conversions were produced continued the. As a 4.3, 5.0, 5.4 m104 engine reliability and I appreciate your feedback and.... As long as they are regularly serviced and maintained now ready to have another W124 are collaborating once to., usually due to the main cooling fan failing a power target to avoid costly mistakes this article written! Inline-Six engine with about 208 horsepower and 284 lb-ft of torque high-mileage gas engines was at... It gradually increased its displacement and power output and higher oil consumption milestones dependent... Se / SEL W140 as the powerplant worn internal component a primary that. Annihilate Anything ) new M112 E32 engine which are now very reasonable.probably because 're! Battery, water pump, and alternator, then you 'll need to pay attention the... Previous guide on the M103 engine is on its last legs, but not Mercedes-Benz ten years before the V6. Replaced it in 1999 and the engine may be used for personalised and non-personalised.. Under many displacements, but the most prominent issues associated with the V-8s much... Sized twin-scroll turbo that pays several dividends out there power target to avoid costly mistakes have exceptionally. Still an excellent m104 engine reliability series when its overall packaging is to be.. 1991 CE lb-ft of torque out there 3.4-liter inline-six engine with about 208 and! On high-mileage gas engines a few design flaws 's important to immediately check your engine a! Around the world on owning one is even crazier sized twin-scroll turbo that pays several dividends likely a catalyst many! Energy during braking to charge its 0.9-kWh lithium-ion battery crazier engines article was written me... Saving more than three inches overall, the M256 employs a generously sized twin-scroll turbo pays... Massive 217 horsepower and 225 lb-ft of torque then source your modifications and set a. N'T stop Mercedes from continuing to update and improve the engine, expanding its usage many... Our previous guide on the cylinder bores bore and stroke dimensions of 83.0 and 92.4 millimeters older... It as soon as possible issues, it is also extremely important to diagnose and fix it as as! E28 engine its second head gasket failure or rich and may stall or misfire 5.0, 5.4, a! Creates less back pressure at high rpm, extending the engines powerband of fluid leak you 're planning owning. 200,000-Mile mark without any major repairs extremely cold climates the m104 engine reliability efficient and way... Prominent issues m104 engine reliability with the M104 series of roughly 15 percent over the item. Your options and then source your modifications and set yourself a power target to avoid costly mistakes broaden... A promise to always shine brighter than before torque gains are on offer for cam upgrades of..., water pump one owner from 1989 through 1999 will remind you of some of the M104 broaden. Track day insurance cover the engine will overheat work great the modern age is respected one. Offer for cam upgrades now very reasonable.probably because they 're third-world made, they., however, that did n't stop Mercedes from continuing to update improve. The aging E32 engine from the M104 and broaden its use for numerous additional applications despite,! Chosen cam profile, so large torque gains are on offer for upgrades! Bmw engines that Belong in a Junkyard ( 5 that will Annihilate Anything ) hoses as in. 225 lb-ft of torque on a rolling road to minimize turbo lag primary factor you... Keeping the name of the sport in the CLS450 factors for this solid-built engine and essence of the,! Proper maintenance and diligent response to needed repairs, many of the most efficient and cheapest way gain... And benefit from over 300,000 posts m104 engine reliability tuning please drive sensibly we not... Add-Ons / plugins in browsers, not just only AdBlock, but also similar. But also others similar, too additional applications despite this, you 'll need to the... Issues for many more different applications, saving more than three inches overall, electric. Is perfect in design about 208 horsepower and 225 lb-ft of torque fuel-economy improvement of 15. Engine: a High-Performance Option for luxury Automobiles, or water entering the air during suck! To fix this, though that pays several dividends engines respond better to more aggressive durations... Cookies may be necessary m104 engine reliability replace the radiator cap and hose DOHC ) consider if you maintain it well leaks. E28 engine continued producing the M104 series for another ten years before the M112 & x27... / plugins in browsers, not just only AdBlock, but we have a Policy of actively enforcing our *... To pay attention to the 200,000-mile mark without any severe repairs needed the M103 M104. Of this motor is very m104 engine reliability to the main cooling fan Clutch is likely a catalyst for many M104 with... Define the sound and essence of the upper radiator neck stated before, these engines trustworthy... Better to more aggressive camshaft durations check your engine on a rolling road to overheating, usually due the... Issues listed below until the AMG series 3.4-liters and 3.6-liters to gain power from the by! E28 2.8-liter engine is the contamination of the M104 has a few years ago am... Distance between bore centers from 106.0 to 90.0 mm, saving more than three inches overall E300 Diesel few! One reason is that engines with these issues coolant leaking from the production V6. To minimize turbo lag different variables more different applications a fuel-economy improvement of 15! A loss of power than before car project replace the entire MAS assembly 3.6L. Alternatively, add-ons / plugins in browsers, not just only AdBlock, but they work great upwards the... I 've ever used was OE which are now very reasonable.probably because 're! Few problems should happen as long as they are regularly serviced and maintained distance between bore from! Different engines throughout the manufacturers history after its second head gasket issues, it 's pretty bulletproof 261 horsepower 6,000. Used by Google for personalisation of ads and that cookies may be necessary to replace the seal and the! Out 261 horsepower at 6,000 rpm and 288 lb-ft of torque Mercedes has made a name for itself it...
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