M177 engine reliability

While the M version M The cylinder liners are made of cast iron. The cylinder bore size of 83 mm 3. But the difference of The 2. This module is screwed onto the crankshaft bearing block from below.

At the bottom, there is a diecast aluminum oil pan, which gives an additional rigidity. An oil pump seats inside the oil pan. On top of the engine block, there is a valve cylinder head made of high-strength aluminum alloy.

The intake and exhaust valves are actuated by two individual, overhead mounted camshafts. Camshafts are chain driven by a toothed timing chain. The intake and exhaust camshafts have solenoids of the camshaft adjustment system providing variable valve timing. Some engines include the Camtronic mechanism on the intake side. This technology enables a switchover from a standard cam for the upper load range to a small cam in the partial load range.

The intake valve diameter is The M and M engines feature direct fuel injection. The high-pressure fuel pump is located on the top of the cylinder head and driven by the intake camshaft. It produces up to bar of fuel pressure for the fuel rail.

The direct injection uses modern high-pressure piezo injectors, providing up to five fuel injections into the combustion chamber during a cycle. Direct injectors are centrally located, while the spark plugs were moved to the exhaust side and placed between exhaust valves.

The exhaust manifold and turbocharged form one module they are welded together. The boost pressure is electronically controlled the max boost is 1. The intake system also includes an air-to-air type intercooler, which cools hot compressed air. The first one is the camshaft actuators solenoids. Usually, after k miles, these engines start producing some kind of noise while they cold. This is a sign of wear inside camshaft adjusters.

Inengines got modified actuators part no. A that hold a little bit longer.Now that we are well into the testing phase of one of our current projects, we felt it was time to give our loyal customers and fans a sneak peek at what many of you know has been in the works for a long time now. The turbo upgrade features high flow cast stainless steel turbo manifolds.

The inlet ports, runners, and outlet are substantially larger than the factory manifold to support very high power levels. The cast stainless steel design was chosen for both reliability and performance. The Weistec Cast Stainless Steel Manifolds are incredibly strong and sturdy in comparison to tubular manifold designs which have a tendency to crack and leak. A cast manifold is also better at retaining heat than a tubular manifold, resulting in quicker response from the turbocharger.

The turbochargers have V-Band inlets to allow for a cleaner and easier install and turbine outlets that not only match the factory location, also have the same flange design to use the same Weistec Downpipes and Midpipes as the stock turbos. November, August, July, April, February, November, September, December, September, more archive dates archive article list. Weistec Media.

Search Submit.The best engines available today, these automotive power plants offer a winning combination of performance and personality, and they span a wide variety of configurations, with three, four, six, eight, or even twelve cylinders. Without further ado and presented in no particular order, here are our 10 favorite current production engines. Force-fed with up to 30, liters of air per minute by its twin-screw IHI supercharger and up to roughly one pint of fuel every six seconds, it relies on a cast-iron block and beefy, Hellcat-specific internals to keep the combustion on the inside.

Troubles With Turbo Engine Reliability

The induction-hardened forged-steel crankshaft rotates on five main bearings, each secured with four-bolt caps. Forged-aluminum pistons connect to powder-forged steel connecting rods via mm wrist pins with a diamond-like low-friction coating.

Producing horsepower and lb-ft of torque from just cubic centimeters of displacement, the EcoBoost gifts the Fiesta and even the larger Focus with stellar EPA fuel economy and tractable around-town performance. We will say that the 1. It still exhibits the same splendid refinement and virtually nonexistent turbo lag as before, and it also makes more power. The latter car boasts an additional horsepower, for or an astonishing horses per literthanks to various improvements. Being moved from in front of the cockpit to behind it allows Ferrari to fix some compromises for packaging, including running a taller intake manifold for more ram-air effect and more optimized turbo plumbing with close-coupled intercoolers.

The twin-scroll IHI turbos are different, too, from those in the California T, with shafts supported by ball bearings, abradable seals for ultimate compressor efficiency, and lighter titanium-aluminide turbines for faster spin-up. Stronger and lighter pistons accept the higher boost pressures, while revised cylinder heads have thinner walls near the combustion chamber for better cooling.

As with any Ferrari, sound was both a priority and a huge challenge with the muffling turbos, but by straightening the pipes as much as possible and reducing the size of other mufflers, Ferrari is able to preserve much of its trademark wail despite the blowers.

However, the current V, the L, introduced with the Aventador inwas drawn from a mostly blank sheet, sharing only the cylinder count, degree V-angle, and firing order. The rest of this dry-sump, rpm, hp gorgon is new, including a pound weight reduction to pounds and engine stop-start and cylinder-deactivation systems for improved fuel economy in a Lambo! The power figures come partly from a stratospheric The port injection in this four-cam, valve engine is slightly old-school, but the Aventador SV makes horses with it and lb-ft of torque using revised cam timing, a straighter exhaust, and a higher, rpm redline.

As in the old days, Lamborghini has produced a classic, short-stroke Italian screamer with an unmistakable head-turning shriek as it revs for its power. Known to zee Germans as the M, this 2. The standout features, in no particular order: closed deck construction, a magnesium oil pan, a forged steel crankshaft, and iron-plasma cylinder-bore surfaces.

Never mind that it makes horsepower, giving it the specific output of horses per liter, or makes its lb-ft of torque at rpm, the twin-turbo 3. This one pulls as hard at rpm as it does at Plus, BMW says it has a water-injection system in development for this engine that will further increase power.

m177 engine reliability

It revs to rpm, for example, and no other engine on this list can spin that quickly. New heads with finger-followers between the valves and the camshafts allow for precise valve operation at high rpm.The 5. The replacement is slated to be the internally codenamed M, a 4. Essentially a twin-turbocharged and direct-injected variant of the older 5. The only exception is the all-new Mercedes-AMG C63, which is the first "63" variant to get the new 4.

Afterwards it was rolled out on pretty much every large Mercedes-AMG model in the lineup. Even though it offers more torque and much better fuel economy than the now-legendary M 6. The last all-new model to get the 5.

Every large AMG model introduced after that will get the 4. Unlike the engine it replaces, the new 4.

m177 engine reliability

With that being said, it does share some design features with the current four-cylinder engine lineup used by Mercedes-Benz. Since the powerplant is essentially two inline-four cylinders bonded to form a V-8 — with the intake runners on the outside and the exhaust-mounted turbochargers sitting inside the cylinder V — it offers a much better throttle response and improved fuel economy compared with the 5.

The new engine is so good, actually, that even non-AMG Mercedes-Benz models will be getting a version of it when the E-Class is launched next year. Source: Autocar. Mercedes Will Drop Its 5. Alex Oagana. Read More. What do you think? Car Finder:. Mercedes GLE-Class. Competing Vehicles. Active filters:. About US. Contact Us. Automotive journalist job.Original Poster. Search My Stuff What's New 3 12 24 AMG 5. I see the facelift car coming next year has the 4 litre twin turbo V8 and produces around bhp.

My question is - which engine is better? I always prefer a higher displacement size, so should I favour the 5. I'd have the old 6. If anyone has insights into the 5. Noise, reliability etc, Thanks. Andy M 3, posts months. Grindle posts 36 months. They are kicking out quite phenomenal bhp and torque from their small engines. I know someone with a Mercedes producing a reliable bhp and torque limited to lbs. The new engines are amazing. The new M 4. This is possibly something to do with the new 9 speed box don't know if the S will come with this but I would assume so which is a lot quicker than the 7 speed I had in my old E Class.

The engine just seems a lot more responsive than the M did, with a lot of torque available from very low down the range all the way through to maximum, and you can get into licence losing territory very quickly without realising the fact unless you're paying attention. I don't know of any reliability issues on the M engine yet, and the M was pretty impressive apart from the cam chain rattle at start up, which is a well known and documented fix.

A couple of non return valves required, Google "m rattle on start" and it's the first hit. Mine was done out of warranty though with a "goodwill" contribution from Mercedes. Apart from this, they seem pretty bullet proof.Select cars to compare from your search results or vehicle pages.

To Save cars from your search results or vehicle pages you must first login. To Save a search to find the cars you like quickly you must first login. Mercedes-AMG proves that downsizing and adding boost need not be a cause for concern. Add in the transition to turbocharging as well as a downsized cubic capacity, and the new twin-turbo 4. Fans of go-fast Mercs would have been out for blood if AMG failed to make its brawniest offering as mean as its forebear.

To be totally faithful to the Mercedes lineage, the twin-turbo 5. The bent eight is fundamentally two M blocks joined by a single crankshaft. Both engines share the same 90mm cylinder spacing and identical bore and stroke The compression ratio has been increased to Forged pistons, a low-friction coating on the cylinder walls and piston rings are highlights.

For the M, AMG also deleted the conventional sump, with the dry-sump lubrication allowing the 4. The one thing most fans were worried about is the sound. Yet, AMG proved its doubters wrong. Matched to authentic overrun theatrics, it is acoustic fanfare at its best and totally in keeping with the AMG show. Actually, quite the opposite is true. Click here to read more Wheels features on Great V8s. By Scott Newman 05 Jul What is GT4 racing?

By Alex Inwood 03 Aug Let us explain. By Trent Giunco 05 Jul AMG packs its four-door coupe with a big heart, luxurious cabin and physics-defying dynamics.Audi vs. All of the German big three, Audi, BMW and Mercedes-Benz, each have their own big twin-turbo V8 that they pump out in a variety of different high-performance cars.

Mercedes-Benz M117 engine

Audi has, in recent years, been using a 4. It uses twin-scroll turbochargers on all RS models, while the standard S models get single-scroll turbos. The 4.

m177 engine reliability

The S63 also has top-mounted twin-scroll turbocharger mounted in the vee of the engine and also features variable valve timing and direct injection. The BMW and Audi engines are remarkably similar, in terms of design and power.

So the BMW makes more horsepower but less torque than the Audi 4. The M is a 5. This gives the E63 AMG a more linear powerband, with torque and horsepower seemingly coming in smoother, though it does develop a lot less power and falls flat at its 6, rpm redline, while the Audi and BMW keep on going a bit longer.

Admittedly, Mercedes has developed a 4. The one advantage the Merc might have is the noise, however, as the M sounds excellent.

All three are excellent engines, develop an incredible amount of power and are all incredibly smooth.

The only things to give the Audi 4. Other than that, these two are the best big German engines you can currently buy. BMW labels codes their …. To celebrate the occasion, the German company went over some of …. Next post See the BMW i8 hydrogen fuel cell in action.


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