BMW 8 Series
Overview
 
The BMW 8 Series is a V8
V8 engine
A V8 engine is a V engine with eight cylinders mounted on the crankcase in two banks of four cylinders, in most cases set at a right angle to each other but sometimes at a narrower angle, with all eight pistons driving a common crankshaft....

- or V12
V12 engine
A V12 engine is a V engine with 12 cylinders mounted on the crankcase in two banks of six cylinders, usually but not always at a 60° angle to each other, with all 12 pistons driving a common crankshaft....

-engined 2-door 2+2 coupe
Coupé
A coupé or coupe is a closed car body style , the precise definition of which varies from manufacturer to manufacturer, and over time...

 built by BMW
BMW
Bayerische Motoren Werke AG is a German automobile, motorcycle and engine manufacturing company founded in 1916. It also owns and produces the Mini marque, and is the parent company of Rolls-Royce Motor Cars. BMW produces motorcycles under BMW Motorrad and Husqvarna brands...

 from 1989 to 1999. While it did supplant the original E24
BMW E24
The BMW E24 series was the first BMW 6 Series coupé, produced by the German automaker BMW between the 1976 and 1989 model years. The 6 Series name reappeared with the BMW E63 chassis beginning in the 2004 model year. The E24 borrowed heavily from contemporary 5-series cars .- Model history :The...

 based 6 Series
BMW 6 Series
BMW 6 Series refers to several generations of executive coupés produced by BMW.The first was the E24, being derived from the E12 & E28 5 Series 4-door sedans. The E24 launched in 1976 to replace the 3.0CS & 3.0CSi . 14 years later, in 2003, BMW released the all new E63/E64 which was available as a...

 in 1991, a common misconception is that the 8 Series was developed as a successor. However, it was actually an entirely new class aimed at a different market, with a substantially higher price and better performance than the 6 series.
It was BMW's flagship car and had an electronically limited top speed of 155 mph (250 km/h).
Design of the 8 Series began in 1986, with construction starting in the same year.
Encyclopedia
The BMW 8 Series is a V8
V8 engine
A V8 engine is a V engine with eight cylinders mounted on the crankcase in two banks of four cylinders, in most cases set at a right angle to each other but sometimes at a narrower angle, with all eight pistons driving a common crankshaft....

- or V12
V12 engine
A V12 engine is a V engine with 12 cylinders mounted on the crankcase in two banks of six cylinders, usually but not always at a 60° angle to each other, with all 12 pistons driving a common crankshaft....

-engined 2-door 2+2 coupe
Coupé
A coupé or coupe is a closed car body style , the precise definition of which varies from manufacturer to manufacturer, and over time...

 built by BMW
BMW
Bayerische Motoren Werke AG is a German automobile, motorcycle and engine manufacturing company founded in 1916. It also owns and produces the Mini marque, and is the parent company of Rolls-Royce Motor Cars. BMW produces motorcycles under BMW Motorrad and Husqvarna brands...

 from 1989 to 1999. While it did supplant the original E24
BMW E24
The BMW E24 series was the first BMW 6 Series coupé, produced by the German automaker BMW between the 1976 and 1989 model years. The 6 Series name reappeared with the BMW E63 chassis beginning in the 2004 model year. The E24 borrowed heavily from contemporary 5-series cars .- Model history :The...

 based 6 Series
BMW 6 Series
BMW 6 Series refers to several generations of executive coupés produced by BMW.The first was the E24, being derived from the E12 & E28 5 Series 4-door sedans. The E24 launched in 1976 to replace the 3.0CS & 3.0CSi . 14 years later, in 2003, BMW released the all new E63/E64 which was available as a...

 in 1991, a common misconception is that the 8 Series was developed as a successor. However, it was actually an entirely new class aimed at a different market, with a substantially higher price and better performance than the 6 series.
It was BMW's flagship car and had an electronically limited top speed of 155 mph (250 km/h).

History of development

Design of the 8 Series began in 1986, with construction starting in the same year. The 8 Series debuted at the Frankfurt Motor Show (IAA) in early September 1989. The 8 Series was designed to move beyond the market of the original 6 Series. The 8 Series however had substantially improved performance, as well as a far higher purchase price.

Over 1.5 billion Deutschemark was spent on total development (2008 USD nearly $1 billion). BMW used CAD tools, still unusual at the time, to design the car's all-new body. Combined with wind tunnel testing, the resulting car had a drag coefficient
Drag coefficient
In fluid dynamics, the drag coefficient is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment such as air or water. It is used in the drag equation, where a lower drag coefficient indicates the object will have less aerodynamic or...

 of 0.29, a major improvement from the previous BMW M6
BMW M6
The BMW M6, also known as the BMW M635CSi, is a high-performance version of the 6-Series automobile, designed by the motorsport division of BMW...

/635CSi
BMW 6 Series
BMW 6 Series refers to several generations of executive coupés produced by BMW.The first was the E24, being derived from the E12 & E28 5 Series 4-door sedans. The E24 launched in 1976 to replace the 3.0CS & 3.0CSi . 14 years later, in 2003, BMW released the all new E63/E64 which was available as a...

's 0.39.

The 8 Series supercar offered the first V-12 engine mated to a 6-speed manual gearbox on a road car. It was also one of the first vehicles to be fitted with an electronic "fly-by-wire" throttle. The 8 Series was one of BMW's first cars, together with the Z1
BMW Z1
The BMW Z1 was a two-seat roadster developed by BMW and produced from March 1989 to June 1991. The Z1 featured doors which dropped down into the door sills. A total of 8,000 cars were produced.-History:...

, to use a multi-link rear axle.

While CAD modeling allowed the car's unibody to be 8 lb (3 kg) lighter than that of its predecessor, the car was significantly heavier when completed due to the large engine and added luxury items—a source of criticism from those who wanted BMW to concentrate on the driving experience.

Sales of the 8 Series were affected by the global recession of the early 1990s, the Persian Gulf War, and energy price spikes. BMW pulled the 8 Series out of the North American market in 1997, selling only 7,232 cars over seven years. BMW continued production for Europe until 1999. The ultimate worldwide production total was 31,062.

830i

Although sales were good in the first year on sale, the sharp reduction of the expensive 850i sales prompted BMW to develop an entry-level model. This was to use the 3-liter V8 with 218 PS from the 530i and 730i, known internally as the M60B30. Eighteen cars were produced, 13 of which had an automatic gearbox fitted. The model was dropped in favour of the 840Ci and almost all of the 18 cars where dismantled, one car is in a BMW museum.

840Ci

The 840Ci exists with two different engine packages. The first used the 4 liter M60B40 engine with 286 PS and was produced from mid 1993 to late 1995. From mid-1995, production phased in the newer 4.4 liter M62B44 engine, which had better fuel economy and more torque, though power output remained unchanged.

The 840Ci was available with a 5-speed automatic transmission, though European cars were given the option of a 6-speed manual transmission. The only external features distinguishing the V8 model from the V12 models were the quad round exhausts, which were square in the V12 models.
The 840Ci stayed in production until mid-1999.

850i

This was the first model launched in 1990 with the 5 litre M70B50 V12 engine producing 300 PS. It was available with either a 4-speed automatic or a 6-speed manual gearbox.

850Ci

There is some confusion over why and when the 850i became the 850Ci. The change happened around the introduction of the 850CSi and it is believed that BMW decided to include the "C" in the model name that denotes 'Coupe' just as two-door 3 Series cars alongside the 8 Series read 323Ci, 328Ci and so on. The confusion starts when BMW installed the new M73B54 engine in the car. This was not an immediate changeover, and indeed both the M70 and M73-engined cars rolled off the production lines side-by-side for about nine months in 1994, both named 850Ci.

As the capacity of the M73 increased to 5.4 liters and the compression ratio went up, the power output rose to 326 PS.

850CSi

As a top-of-the-range sports tourer, the 850CSi took over from the prototype M8. The 850CSi used the same engine as the 850i, which was tuned so significantly that BMW assigned it a new engine code: S70B56. The modifications included a capacity increase to 5.6 liters and power increase to 380 PS.

The 850CSi's modified suspension included stiffer springs and dampers and reduced the car's ride height. The recirculating ball steering ratio was dropped 15% over the stock E31 setup. The model also sported wider wheels, with the option of forged alloys. The front and rear bumpers were reshaped for improved aerodynamic performance. Four round stainless steel exhaust tips replaced the square tips found on other models. The 6-speed manual gearbox was the only transmission option. In Europe all 850CSi's came with four-wheel steering (AHK - Aktive Hinterachs-Kinematik).

Production ended in late 1996 because the S70 engine could not be modified to comply with new emission regulations without substantial re-engineering.

M8

Originally envisioned as a Ferrari
Ferrari
Ferrari S.p.A. is an Italian sports car manufacturer based in Maranello, Italy. Founded by Enzo Ferrari in 1929, as Scuderia Ferrari, the company sponsored drivers and manufactured race cars before moving into production of street-legal vehicles as Ferrari S.p.A. in 1947...

 competitor, only a single prototype BMW M8 was ever produced, equipped with a special 550 bhp version of the S70 engine, essentially a bored out version of the M70 with experimental multi-valve cylinder heads. A common misconception is that this engine powered the McLaren F1
McLaren F1
The McLaren F1 is a supercar designed and manufactured by McLaren Automotive. Originally a concept conceived by Gordon Murray, he convinced Ron Dennis to back the project and engaged Peter Stevens to design the exterior of the car...

. However, when this was suggested to McLaren's designer Gordon Murray, the idea was rejected because the engine was too heavy and long for the McLaren F1
McLaren F1
The McLaren F1 is a supercar designed and manufactured by McLaren Automotive. Originally a concept conceived by Gordon Murray, he convinced Ron Dennis to back the project and engaged Peter Stevens to design the exterior of the car...

. Rather, variations on the original S70 used on the 850csi, the S70/2 and S70/3 were used for the McLaren F1 (The variation used on the M8 prototype was the S70/1 engine).

The project was eventually scrapped because BMW decided that there was no market for an M8. The only prototype ever produced (one that was reportedly not even road safe) was locked away by BMW in the company's Giftschrank (poison storage). BMW and the M Division had strongly denied that the car was even a possibility since the initial stages of its development. A world exclusive feature in the February 2010 issue of BMW Car Magazine, however, revealed that the M8 prototype still exists in its entirety. The car was unveiled for the first time in front of journalists on July 2, 2010 at the BMW Museum in Munich.

While the M8 was never produced, it is interesting to note that the 850CSi was also tuned by BMW's M division
BMW M
BMW M GmbH is a subsidiary of German car manufacturer BMW AG.BMW M, also known as M-Technik or just "M" was initially created to facilitate BMW’s racing program, which was very successful in the 1960s and 1970s...

. Aside from sporting an M-tuned engine (as identified by the S suffix instead of the M prefix that a non-M tuned engine would wear), the car's VIN identifies the car as being built by BMW Motorsport (identified by the WBS prefix) instead of BMW AG (WBA prefix). This effectively identifies the 850CSi as essentially a detuned version of the M8.

Alpina B12

BMW tuner Alpina
Alpina
Alpina Burkard Bovensiepen GmbH is an automobile manufacturing company based in Buchloe, in the Ostallgäu district of Bavaria, Germany selling their own cars, based on BMW cars....

 produced a special version of the 8 Series dubbed the B12. Two versions were produced, both taken from the standard production line.

B12 5.0 Coupe was based on the 850i, powered by the 5.0-liter M70 engine producing 350 bhp, and available only with a 4-speed automatic gearbox.

B12 5.7 Coupe was based on the 850CSi, with the 5.7-litre S70 engine producing 416 bhp with a 6-speed manual gearbox.

Racing Dynamics K55 Sport Coupe

BMW tuner Racing Dynamics of Italy in 1991 produced a special version of the 8 Series dubbed the K55 Sport Coupe taken from the standard production line. The K55 5.5 Coupe was based on the 850i, powered by the 5.0-liter M70 that was stroked to 5.5 liters, new valves, camshafts lifters and intakes along with extrude honed heads. The one US version engine producing 475 bhp and the Euro version producing 401 bhp. 40 K55s were produced for the Euro market and one in the US. In addition to engine modifications, The K55 offered a variety of body, suspensions, rear end options.

However, there is no verification of 475 hp produced by this car by Racing Dynamics. The K55 produces 380 hp and 405 ft.lbf of torque as listed in the 02/1994 Euro car magazine. Racing Dynamic's own website lists the K55 at 401 hp.

The 475 hp was declared by Autothority (as listed in the said Road & Track article) who are no longer in business in their original capacity. The 475 hp claim was never verified.

PowerPlant Racing BMW "860i"

Race car tuner PowerPlant racing of North Carolina, USA produced the most powerful Naturally Aspirated 8 series BMW. This was done by increasing the displacement of the M70 V12 engine to a 6.0L capacity.

This conversion changes the stroke of the engine from 73 mm (2.9 in) to 86 mm (3.4 in), the bore from 84 mm (3.3 in) to 86 mm (3.4 in) and the compression ratio from 8.8/1 to 10/1. The 6.0 conversion on a stock rebuild makes 405 HP & 425 ft.lbf of torque. However, there are add on options of this program that increases the specifications to 455+ HP and 500+ ft·lbf (386 HP and 409 ft.lbf torque at the wheels) that is emission legal with completely civilized, stock drivability.

Limited editions

  • 840 CiA "M Individual" (Japan) 298 ex (05/1996-04/1999)
  • 840 Ci Sport (Belgium) 1 ex (03/1999)
  • 840 CiA Sport (UK and Belgium) 3 ex Belgium, 1062 UK (03/1997-05/1999 UK) (10/1998-05/1999 Belgium)
  • 850 CiA Platinum (Middle East) (1998–1999) 59 ex
  • 850 CiA 5.4 Alpina (Middle East) (1998–1999) 10 ex
  • 850 CiA Sport (Belgium) (05/1999) 1 ex

Motorsport

The 8-Series is a very rare car to see in any form of motorsport. However, one of the best examples was built by Wagenstetter Motorsport and, until recently, was raced in the Nurburgring VLN endurance championship. It’s based on an 840i, but now has an E39 M5 5.0-litre V8, which has 555 bhp and 472 lbft torque, and a six-speed gearbox from the same car.

Powertrain and production data

ModelMY
Model year
The model year of a product is a number used worldwide, but with a high level of prominence in North America, to describe approximately when a product was produced, and indicates the coinciding base specification of that product....


Global
MY
USA/CDN
Production
years
EngineVolumeEngine
alloy
|Power|Torque0 to 100
km/h
Production
total
Production
USA/CDN
830Ci 1992 1992 M60B30 V8
V8 engine
A V8 engine is a V engine with eight cylinders mounted on the crankcase in two banks of four cylinders, in most cases set at a right angle to each other but sometimes at a narrower angle, with all eight pistons driving a common crankshaft....

2997 cc Nikasil
Nikasil
Nikasil is a trademarked electrodeposited lipophilic nickel matrix silicon carbide coating for engine components, mainly piston engine cylinder liners. It was introduced by Mahle in 1967, initially developed to allow rotary engine apex seals to work directly against the aluminum housing...

160 kW 290 newton metre | – |18 |–
840Ci 1993–95 1994–95 1992–96 M60B40 V8 3982 cc Nikasil
Nikasil
Nikasil is a trademarked electrodeposited lipophilic nickel matrix silicon carbide coating for engine components, mainly piston engine cylinder liners. It was introduced by Mahle in 1967, initially developed to allow rotary engine apex seals to work directly against the aluminum housing...

210 kW 400 newton metre | 6.9s |4,728 |1,649
840Ci 1996–99 1996–97 1995–99 M62B44 V8 4398 cc Alusil
Alusil
Alusil as a hypereutectic aluminium-silicon alloy contains approximately 78% aluminium and 17% silicon. This alloy was created in 1927 by Schweizer & Fehrenbach of Baden-Baden Germany and further developed by Kolbenschmidt....

210 kW 420 newton metre | 6.6s |3,075 |801
850i/Ci 1990–94 1991–94 1989–94 M70B50 V12
V12 engine
A V12 engine is a V engine with 12 cylinders mounted on the crankcase in two banks of six cylinders, usually but not always at a 60° angle to each other, with all 12 pistons driving a common crankshaft....

4988 cc Alusil
Alusil
Alusil as a hypereutectic aluminium-silicon alloy contains approximately 78% aluminium and 17% silicon. This alloy was created in 1927 by Schweizer & Fehrenbach of Baden-Baden Germany and further developed by Kolbenschmidt....

220 kW 450 newton metre | 6.8s |20,072 |4,194
850Ci 1995–99 1995–97 1994–99 M73B54 V12 5379 cc Alusil
Alusil
Alusil as a hypereutectic aluminium-silicon alloy contains approximately 78% aluminium and 17% silicon. This alloy was created in 1927 by Schweizer & Fehrenbach of Baden-Baden Germany and further developed by Kolbenschmidt....

240 kW 490 newton metre | 6.3s |1,218 |363
850CSi 1992–96 1994–95 1992–96 S70B56 V12 5576 cc Alusil
Alusil
Alusil as a hypereutectic aluminium-silicon alloy contains approximately 78% aluminium and 17% silicon. This alloy was created in 1927 by Schweizer & Fehrenbach of Baden-Baden Germany and further developed by Kolbenschmidt....

280 kW 550 newton metre | 5.6s |1,510 |225
M8 S70/1 V12 ≈6000 cc Alusil
Alusil
Alusil as a hypereutectic aluminium-silicon alloy contains approximately 78% aluminium and 17% silicon. This alloy was created in 1927 by Schweizer & Fehrenbach of Baden-Baden Germany and further developed by Kolbenschmidt....

410 kW |undisclosed | – 1 prototype |–

Transmission

The 840Ci (V8) U.S. models were each equipped with a 5-speed automatic transmission. The 850i/850Ci (V12) models each carry either a 4-speed automatic transmission, 5-speed automatic transmission, or a 6-speed manual. The 850CSi model only came with a 6-speed manual transmission.

Fuel economy

1997 United States Environmental Protection Agency
United States Environmental Protection Agency
The U.S. Environmental Protection Agency is an agency of the federal government of the United States charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress...

estimates for cars equipped with automatic transmission.

840Ci
  • Fuel type: Premium
city: 15 miles per US gallon (6.4 km/L)
highway: 20 mpgus
combined: 17 mpgus


850Ci
  • Fuel type: Premium
city: 14 miles per US gallon (6 km/L)
highway: 20 miles per US gallon (8.5 km/L)
combined: 16 miles per US gallon (6.8 km/L)

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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