The BMW M8 is the high-performance version of the BMW 8 Series (G15) marketed under the BMW M sub-brand.
31-661: Introduced in June 2019, the M8 was initially produced in the 2-door convertible (F91 model code) and 2-door coupe (F92 model code) body styles. A 4-door sedan (F93 model code, marketed as 'Gran Coupe') body style was added to the lineup in October 2019. The M8 is powered by the BMW S63 twin-turbocharged V8 engine shared with the BMW M5 (F90) . BMW revived the 8 Series nameplate by introducing
62-404: A V engine 's produced exhaust through independent piping. The two turbochargers can either be matching or different sizes. There are three types of turbine setups used for twin-turbo setups: These can be applied to any of the five types of compressor setups (which theoretically could have 15 different setups): In a parallel configuration, two equally-sized turbochargers each receive half of
93-614: A stroke of 88.3 mm (3.48 in) [except for the Chinese market 89 mm (3.50 in) and a stroke of 80 mm (3.15 in)]. In 2012, a "Technical Update" was applied to the N63, resulting in the N63TU variants (also known as N63B44O1 ). The main upgrade was the addition of Valvetronic. Other changes include revised turbochargers, removal of the blowoff valve , lighter pistons, forged connecting rods and crankshaft, addition of
124-482: A valve cover labyrinth oil catch/return system, new valve stem seals, revised fuel system and addition of a second coolant pump. A second Technical Update occurred in 2016, resulting in the N63TU2 variants (also known as N63B44O2 ). The major changes are the use of twin-scroll turbochargers, a wider powerband and the oil/coolant heat exchanger being moved to within the "V" of the engine. A third Technical Update
155-552: A 200 rpm wider band. Applications: Applications: Applications: The S63 is the BMW M version of the N63, which debuted in the BMW X6 ;M and was used in the BMW M5 models from 2011 to 2023. The S63 uses two twin-scroll turbochargers plus a pulse tuned, cross-engine exhaust manifold to keep constant exhaust pulses flowing to the turbos at every 180 degree rotation. Applications: Applications: A technical update to
186-435: A separate exhaust manifold. For four-cylinder engines and straight-six engines , both turbochargers can be mounted to a single exhaust manifold. The aim of using parallel twin-turbos is to reduce turbo lag by being able to use smaller turbochargers than if a single turbocharger was used for the engine. On engines with multiple cylinder banks (e.g. V engines and flat engines ) use of parallel twin-turbos can also simplify
217-460: A shorter stroke length of 80 mm (3.15 in), the capacity is reduced to 3,982 cc (243.0 cu in). Applications: The initial version of the N63 produces 300 kW (402 bhp) and 600 N⋅m (443 lb⋅ft). Applications: The first technical update resulted in an increase of 31 kW (42 bhp) and 50 N⋅m (37 lb⋅ft). Applications: The second technical update resulted in peak torque being produced over
248-416: A single turbo, commonly called a compound twin-turbo system. In this case, multiple similarly sized turbochargers are used in sequence, but constantly operating. The first turbo boosts provides the initial compression (for example to three times the intake pressure). Subsequent turbos take the charge from the previous stage and compress it further (for example to an additional three times intake pressure, for
279-429: A total boost of nine times atmospheric pressure). A downside of staged turbocharging is that it often leads to large amounts of turbo lag, therefore it is mostly used on piston engine aircraft which usually do not need to rapidly raise and lower engine speed. (and thus where turbo lag is not a primary design consideration), and where the intake pressure is quite low due to low atmospheric pressure at altitude, requiring
310-502: Is N63M30A. Applications: An evolution of this engine, with better power delivery, is of the N63B44T3 type. Applications: In December 2014, BMW North America released a voluntary recall ("Customer Care Package") relating to issues with timing chain stretch, fuel injectors, mass air flow sensors, crankcase vent lines, battery, engine vacuum pump, low pressure fuel sensor and revising the oil service interval. In 2019 NHTSA addressed
341-401: Is less kinetic energy present in the exhaust gases) but are unable to provide the quantity of compressed intake gases required at higher RPM. Therefore, sequential turbocharger systems provide a way to decrease turbo lag without compromising power output at high RPM. The system is arranged so that a small ("primary") turbocharger is active while the engine is operating at low RPM, which reduces
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#1732802524953372-490: The BMW N62 (a naturally aspirated V8 engine) and was first used in the 2008 X6 xDrive50i. The S63 engine is the BMW M high-performance version of the N63. Alpina versions of the N63 are used in various F01 7 Series , F10 5 Series , G11 7 Series , G15 8 Series and G30 5 Series models. The airflow path through the engine uses a "hot-vee" layout, where the exhaust manifolds and turbochargers are located between
403-689: The M8 GTE racecar (a first by BMW, as the brand usually introduces the production version first), which replaced the M6 GTLM at the end of the 2017 season of the IMSA WeatherTech SportsCar Championship , leading to speculation about a production equivalent to the racing car. At the 2018 Geneva Motor Show , BMW introduced the M8 Gran Coupé Concept, which previewed a high performance four-door variant of
434-512: The N54B30 , the initial N63 (including the S63) did not use Valvetronic (variable valve lift) because its benefit of reducing of intake vacuum is not as important in turbocharged engines. Due to the presence of turbocharging, the N63 does not use a variable-length intake manifold . The N63 is BMW's first V8 engine to use direct injection . The N63/S63 uses a bore of 89 mm (3.50 in) and
465-410: The exhaust gases . Some designs combine the intake charge from each turbocharger into a single intake manifold , while others use a separate intake manifold for each turbocharger. Parallel configurations are well suited to V6 and V8 engines since each turbocharger can be assigned to one cylinder bank, reducing the amount of exhaust piping needed. In this case, each turbocharger is fed exhaust gases by
496-752: The 2018 M5. Applications: The P63 is the BMW Motorsport version of the N63, which debuted in the BMW M8 GTE . Alpina uses a variant of the N63 engine, which was hand-assembled at the Alpina plant in Buchloe before being transported to the BMW production line. For the 2013 model year, the Alpina engine received Valvetronic like all other N63 engines. Applications: Applications: Applications: Applications: Applications: The Alpina engine code
527-514: The Concept 8 Series introduced alongside the M8 GTE at the 2017 Frankfurt Motor Show . The design of the concept was based on the M8 GTE and sported aggressive M performance visual parts. Prototypes of the M8 began testing in June 2017 when another Concept of the 8 Series was unveiled to the public. Development of the M8 continued into 2018 and more production ready prototypes were made available to
558-566: The M8 Competition made its debut as the official safety car. BMW N63#S63 The BMW N63 is a twin-turbocharged petrol V8 engine which has been in production from 2008 to present. The N63 is the world's first production car engine to use a "hot-vee" layout, with the turbochargers located inside the "V" of the engine. It is also BMW's first turbocharged petrol V8 engine. The engine has been widely noted for its mechanical issues, undergoing several recalls. The N63 replaced
589-599: The S63, known as the S63B44T1, debuted on the F10 M5 sedan. This version uses Valvetronic , a 10:1 compression ratio (compared with 9.3:1 for the non-TU version) and 1.5 bar of boost (compared with 1.3). It is the first BMW M engine to use Valvetronic. The rev limit was increased from 6800 rpm to 7200 rpm. Applications: The S63B44T2 debuted on the 2015 X5 M and X6 M models. Applications: The S63B44T4 debuted on
620-516: The ability to decouple its front axle to make the car purely rear-wheel-drive, a feature first introduced on the M5. The M8 is powered by a version of the BMW S63 twin-turbocharged V8 engine which is shared with the M5, X5M and X6M models. This engine is rated at 441 kW (591 hp) at 6,000 rpm and 750 N⋅m (553 lb⋅ft) in the standard M8 model, with peak power increasing to 460 kW (617 hp) at 6,000 rpm, while torque remains
651-535: The automotive press for review. The car was finally introduced online on 4 June 2019 in the high performance "Competition" variation in coupé and convertible bodystyles. Production began in August 2019. The M8 is based on the BMW CLAR platform , with strut and wishbone suspension at the front and multi-link suspension at the rear. Adaptive dampers are standard equipment. The all-wheel-drive system (called xDrive ) has
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#1732802524953682-425: The boost threshold (RPM at which effective boost is provided) and turbo lag. As RPM increases, a small amount of exhaust gas is fed to the larger ("secondary") turbocharger, to bring it up to operating speed. Then at high RPM, all of the exhaust gases are directed to the secondary turbocharger, so that it can provide the boost required by the engine at high RPM. The first production car to use sequential turbocharging
713-550: The convertible. The M8 can be fitted with M Performance Parts. These include a sport steering wheel, carbon fibre parts, side skirts, M rims and a bigger spoiler. Performance figures include a 0–100 km/h (62 mph) acceleration time of 3.2 seconds, 0–200 km/h (124 mph) acceleration time of 10.8 seconds (10.6 seconds for the M8 Competition) and a limited top speed of 264 km/h (164 mph). The top speed can be raised to 305 km/h (190 mph) with
744-528: The cylinder banks (on the "inside" of the V8) and the intake manifolds are located on the outside of the engine. This is opposite to the traditional layout for a V8, where the intake is inside the "V" and the exhaust manifold is on the outside. The hot-vee layout reduces the width of the engine and decreases the exhaust runner length from the exhaust valves to the turbochargers. The engine uses air-to-water intercoolers, therefore improving throttle response. Similar to
775-463: The exhaust system. The 1981–1994 Maserati Biturbo was the first production car to use twin-turbochargers. Sequential turbocharging is a set-up in which the engine uses one turbocharger for lower engine speeds, and a second or both turbochargers at higher engine speeds. This system is intended to overcome the limitation of large turbochargers providing insufficient boost at low RPM. On the other hand, smaller turbos are effective at low RPM (when there
806-496: The iDrive controller, a feature which has been criticised for resulting in inconsistent brake pedal feel. The "M8 Competition" is the upper model of the range, with changes including increased engine power, a modified induction system and more rigid engine mounts. The unladen kerb weight of 2019 M8 Competition model sold in the United Kingdom is 1,885 kg (4,156 lb) for the coupé and 2,010 kg (4,431 lb) for
837-518: The multitude of issues with BMW N63 engines, various class action lawsuits in tow, and never officially declared a mass recall in regard to valve seal issues inherent in the N63 line. Twin-turbo In an internal combustion engine , twin-turbo is a layout in which two turbochargers are used to compress the intake fuel/air mixture (or intake air, in the case of a direct-injection engine ). The most common layout features two identical or mirrored turbochargers in parallel, each processing half of
868-542: The optional M Driver's package which also adds high speed rated tyres to the car. The racing version of the M8 called the M8 GTE was introduced at the 2017 Frankfurt Motor Show . The car made its competitive debut at the 2018 WeatherTech SportsCar Championship and the FIA WEC for the 2018 season marking BMW's return to Le Mans after 6 years. In 2019 , during the MotoGP Austrian Grand Prix ,
899-488: The same for the M8 Competition model. The sole transmission available for the M8 is an 8-speed torque converter ZF 8HP76 automatic transmission manufactured by ZF Friedrichshafen called the "M-Steptronic" by BMW and also shared with the F90 M5. The standard brakes consist of iron discs, with carbon ceramic brakes being optional. The level of power assist for the brakes can be set to either ‘comfort’ or ‘sport’ mode using
930-403: Was introduced in 2018. Two variants are offered: N63B44M3 and N63B44T3. N63B44M3 features improved thermal shielding for the crankcase and the cylinder head, and a new ignition system. The N63B44T3 gains higher pressure (5000psi) injectors, larger twin-scroll turbochargers, a redesigned intake manifold, and an upstream cooling radiator. This smaller variant was sold in the Chinese market. Due to
961-427: Was the 1986–1988 Porsche 959 , which used sequential twin-turbos on its flat-six engine. Serial turbocharging is where the turbochargers are connected in series with the output of the first turbocharger then being further compressed by the second turbocharger and in some cases powering the larger turbine. A serial turbo can also be of use to a system where the output pressure must be greater than can be provided by