S63 AMG 900hp M157 BiTurbo

buy S63 AMG 900hp M157 BiTurbo online Contrary to popular belief, the powerplant’s architecture is based on the M278 4.7-liter bi-turbo Mercedes-Benz unit, not the AMG-developed M156 it replaced.

Extensively reworked, its displacement was increased to 5.5 liters, mainly due to the upgraded piston bore and stroke of 98 mm × 90.5 mm (3.86 in × 3.56 in). Like the M278, it featured an aluminum block and cylinder heads, receiving a forged steel crankshaft and conrods connected to hypereutectic-cast pistons. The first piston rings had a diamond-like coating, a technology derived from the manufacturer’s racing engines.

The M157 was the first Mercedes-AMG V8 to use a direct fuel injection system. It had four valves per cylinder, each equipped with roller-type followers and by employing hydraulic cam adjusters, the powerplant benefited from fully variable valve timing. Furthermore, the exhaust valves were hollowed out and filled with sodium to optimize heat dissipation.

Depending on the model, the M157 had a wide range of output levels. The first units which were fitted to the S 63 and CL 63 produced 536 hp (400 kW) and 590 lb-ft (800 Nm) of torque. With the optional AMG Performance Package, power rose to 563 hp (420 kW) and 664 lb-ft (900 Nm) of torque between 2,500 and 3,750 rpm to buy S63 AMG 900hp M157 BiTurbo online.

The tamest variants powered the 2012-2013 E 63 and CLS 63. Here, the engine delivered power is 518 hp (386 kW) and 516 lb-ft (700 Nm) of torque in standard form, or 550 hp (410 kW) and 590 lb-ft (800 Nm) on those equipped with the AMG Performance Package.

These two models got a power boost beginning with the 2014 model year that saw the output increase to 550 hp (410 kW) and 531 lb-ft (720 Nm) of torque or 577 hp (430 kW) and 590 lb-ft (800 Nm) of torque on the S-Model variants.