• AMG short teaser video on the new M178 4.0 liter bi-turbo V8 explaining the engineering choices

      This is a great piece of marketing from AMG. The M178 V8 is making some big headlines as AMG finally released the info confirming many of the reports over the past couple years. AMG clearly realizes how important this engine is and is presenting it to the world incredibly well. They started with the exhaust note sounds, then the specs, and now offer up this quick video overview. So what does this short video teach us?


      That Mercedes-AMG wants this motor to sit low and far back in the AMG GT chassis. The dry sumpy lubrication system allow the motor to sit 55mm lower than if it used a conventional system. Additionally, as the M178 is smaller at 4.0 liters than the M157 5.5 liter V8 many were clamoring for this lower center of gravity combined with a lighter motor means a car with better weight distribution and of course less weight on the nose.

      This is important as Mercedes is targeting the Porsche 911. By keeping weight balance toward the rear Mercedes will not allow the 911 to have a huge advantage thanks to its rear engine layout which pays dividends in traction off the line and braking performance. So Mercedes likely has a 49/51 front to rear weight balance going thanks to the dual clutch transmission transaxle setup that they are mimicking in the AMG GT from the SLS. The AMG GT will not suffer from the negatives of the 911 rear weight bias which usually means slower entry to an apex but quick exit speeds thanks to being able to get on the power earlier. It also means no problems with snap on oversteer. The AMG GT will be better balanced.

      Turbo spool should actually be better than the M157 despite the displacement disadvantage. Why? The M178 offers a 10.5:1 compression ratio whereas the M157 offers a 10.0:1. It is not just the compression ratio but the turbocharger manifold design which will affect spool and the M178 features shorter routing of the exhaust gases with its top mounted turbos. Mercedes built a very efficient design here clearly taking throttle response and spool for the track into account.

      This is going to be an exciting motor that will be with us for some time and a worthy successor to the great AMG engines that preceded it.

      This article was originally published in forum thread: AMG short teaser video on the new M178 4.0 liter bi-turbo V8 explaining the engineering choices started by Sticky View original post
      Comments 26 Comments
      1. ezec63's Avatar
        ezec63 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I need to see the pricing. If it's going to cost me $100k I'm going to need to around $40-$50 down. Ugh...
        Im sure the z07 package will cost a good amount but like the z51 will be "necessary" for max performance. Talking about carbon ceramics, crazy aero package, Michelin pilot sport cup 2 tires that are on the 918 spyder in 335 rears :-0. Now with 650hp/650 tq stock im sure a quick pulley/header/intake will bring it deep into the 600 wheel territory if not more with e85
      1. Sticky2's Avatar
        Sticky2 -
        I think it will be around 600 stock. Car will rip... I need one. Like my existence is physically dependent on it.
      1. rawad1017's Avatar
        rawad1017 -
        everyone got so sick of the C63 vs M3 discussion that the vette intercedes lmao
      1. ezec63's Avatar
        ezec63 -
        Click here to enlarge Originally Posted by rawad1017 Click here to enlarge
        everyone got so sick of the C63 vs M3 discussion that the vette intercedes lmao
        LMAO its all good me and sticky always get into these discussion but always keep it respectful unlike some people. Ive learned a lot here and its good to throw a wrench into things every once in a while. On a serious note the stingray is a great car i really can't believe the speed you can carry into a corner and just toss the car into the grip is tremendous. Cant imagine what the z06 will be like with those 335 michelin sport cup tires on the rear
      1. ezec63's Avatar
        ezec63 -
        Click here to enlarge Originally Posted by Sticky2 Click here to enlarge
        I think it will be around 600 stock. Car will rip... I need one. Like my existence is physically dependent on it.
        Thats probably a good bet. Blower might be smaller then zr1 but the DI motor is more efficient should be a beast ! Aren't gt500 guys getting into the 700 wheel area with bolt ons? this should be even stronger with a chassis that a mustang can never dream of. Really excited to see how the 8 speed auto does thats what ill be getting
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ezec63 Click here to enlarge
        Thats probably a good bet. Blower might be smaller then zr1 but the DI motor is more efficient should be a beast ! Aren't gt500 guys getting into the 700 wheel area with bolt ons? this should be even stronger with a chassis that a mustang can never dream of. Really excited to see how the 8 speed auto does thats what ill be getting
        The blower is smaller but I think GM has a point with it benefitting response. That said, a blower upgrade won't be too difficult and I can only imagine something bigger on there.

        This should definitely be capable of 700 with bolt ons, easy.

        The auto is going to get maxed in a hurry.