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  • BMW E24 6 Series (1976-1989)

BMW E24 6 Series

 1976 to 1989
BMW E24 6 Series motor car history
Overview
Manufacturer BMW
Production 1976–1989 86,216 built
Assembly Dingolfing, West Germany Rheine, West Germany
Designer Paul Bracq
Body and chassis
Body style 2-door coupé
Layout FR layout
Powertrain
Engine 2.8−3.5 L six-cylinder petrol
Transmission Manual 4-speed 5-speed Automatic 3-speed 4-speed
Dimensions
Wheelbase 2,626 mm (103.4 in)
Length 4,755 mm (187.2 in) 4,923 mm (193.8 in) (US)
Width 1,725 mm (67.9 in)
Height 1,365 mm (53.7 in) 1,354 mm (53.3 in) (M6)
Curb weight 1,450 kg (3,200 lb)–1,520 kg (3,350 lb)
Chronology
Predecessor BMW E9
Successor BMW E63/E64

 

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 (E12, later E28).

Model history

The E24 was a replacement for the CS and CSL coupés first produced in 1965. The CS 3.0 was almost changed by adding a few centimeters in height to make it easier for customers to get into the car. However, Bob Lutz rebelled against the decision and rough drafted an alternative version that soon became the 6 series. Production started in March 1976 with two models: the 630CS and 633CSi. Originally the bodies were manufactured by Karmann, but production was later taken in-house to BMW.

In July 1978 a more powerful variant, the 635CSi, was introduced (for the time being not available in North America and Japan) that featured as standard a special close-ratio 5-speed gearbox and a single piece black rear spoiler. The bigger bore and shorter stroke facilitated max 218 hp at 5200rpm and a better torque curve. For the first year, the 635CSi was offered in three colors (Polaris, Henna Red, Graphite), and could also be spotted by the front air dam that did not have attached fog lights. These simple cosmetic changes reportedly worked to reduce uplift on the car at high speeds by almost 15% over the non-spoiler body shape. This early model shared suspension components with the inaugural BMW 5-series, the E12.

BMW E24 6 Series side view

In 1979 the carburetted 630CS was replaced with the 628CSi; this car had a fuel injected 2.8L engine taken from the BMW 528i.

In 1980 the 635CSi gained the central locking system that is also controlled from the trunk. Also, the E24 body style converted from L-jetronic injection to a Bosch Motronic DME.

In 1982 (Europe) and 1983 (US), the E24 changed slightly in appearance, with an improved interior and slightly modified exterior. At the same time, the 635CSi received a new engine, a slightly smaller-bored and longer-stroked 3430 cc six to replace the former 3453 cc engine and became available with a wide-ratio 5-speed manual or an automatic.

This slight change in 1982 (Europe) was in fact a major change as pre 1982 cars were based on the E12 5 Series chassis and later cars were based on the much improved E28 chassis. The only parts that remained the same were some of the exterior body panels. This fact can be verified by studying the parts lists.

BMW E24 6 Series interior

E24s produced after June 1987 came with new, ellipsoid headlamps which projects beam more directly onto road surface (newly introduced E32 series also sporting them). The sleeker European bumpers were also discontinued. Previous cars had either a European-standard bumper or a larger, reinforced bumper to meet the US standard requiring bumpers to withstand impact at 5 mph (8 km/h) without damage to safety-related components. 1989 was the last year for the E24 with production stopping in April. The E24 was supplanted by the considerably heavier, more complex, and more exclusive E31.

M version

BMW E24 6 Series M635 CSI engine

BMW Motorsport introduced M 635 CSi in Europe at the Frankfurt Motor Show in 1983. It is essentially an E24 powered by the powerplant of the BMW M1 - the M88 (286 PS (210 kW; 282 hp)). Most of the cars were equipped with special metric 415 mm diameter wheels requiring Michelin TRX tires. A catalyzed, lower compression ratio version of the car with the S38 engine (260 PS (190 kW; 260 hp)) was introduced in the U.S. in 1987. All M6 cars came standard with a 25% rear limited slip differential. U.S. models included additional comforts that were usually optional on models sold in Europe such as Nappa leather power seats and a dedicated rear A/C unit with a center beverage chiller. Car and Driver tested a U.S. M6 in July 1987 and achieved a 0-60 time of 6.1 seconds, better than the BMW published 6.4 and 6.8 second times for the European and U.S. versions respectively. 4,088 M 635CSi cars were built between 1983 and 1988 with 1,767 U.S. M6 built.

 

 Wheeler Dealers Series 4 BMW-E24-635CSi

Wheeler Dealers Series 4 BMW E24 635CSi

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BMW E24 6 Series car history from 1976 to 1989

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Technical

  • Technical data

    Manufacturer's figures except where stated  (does not include North American and Japanese models).

    BMW 628 CSi 630 CS 633 CSi 635 CSi 635 CSi M 635 CSi
    Produced:  1979–1987 1976–1979 1976–1983 1978–1988 1988–1989 1983–1989
    Engine:  M30B28 M30B30 M30B32 M30B34 M30B35 M88/3
    Max. Power @ rpm:  184 PS (135 kW; 181 hp) @ 5800 185 PS (136 kW; 182 hp) @ 5800 197 PS (145 kW; 194 hp) @ 5500 218 PS (160 kW; 215 hp) @ 5200 218 PS (160 kW; 215 hp) @ 5200 286 PS (210 kW; 282 hp) @ 6500
    Max. Torque @ rpm:  235 N·m (173 lb·ft) @ 4200 255 N·m (188 lb·ft) @ 3500 284 N·m (209 lb·ft) @ 4300 304 N·m (224 lb·ft) @ 4000 304 N·m (224 lb·ft) @ 4000 333 N·m (246 lb·ft) @ 4500
    Fuel tank capacity:  70 L (18.5 US gal; 15.4 imp gal)
    Gearbox:  4-speed manual, from 1979 5-speed manual (wide- or close-ratio) on request 3-speed automatic, from 1983 4-speed automatic rear wheel drive 5-speed manual rear wheel drive
    Front suspension:  McPherson axle, coil springs, stabilising bar
    Rear suspension::  Trailing arms, struts, coil springs, stabilising bar
    Steering:  ZF recirculating ball steering, power assisted
    Dry weight:  1,450 kg (3,200 lb) 1,475 kg (3,252 lb) 1,495 kg (3,296 lb) 1,520 kg (3,350 lb) 1,470 kg (3,240 lb) 1,510 kg (3,330 lb)
    Track front/ rear:  1,422 mm (56.0 in) 1,487 mm (58.5 in) 1,422 mm (56.0 in) 1,487 mm (58.5 in) 1,422 mm (56.0 in) 1,487 mm (58.5 in) 1,430 mm (56 in) 1,460 mm (57 in) 1,430 mm (56 in) 1,460 mm (57 in) 1,430 mm (56 in) 1,464 mm (57.6 in)
    Wheelbase:  2,626 mm (103.4 in) 2,626 mm (103.4 in) 2,626 mm (103.4 in) 2,626 mm (103.4 in) 2,626 mm (103.4 in) 2,626 mm (103.4 in)
    Top speed:  215 km/h (134 mph) 210 km/h (130 mph) 215 km/h (134 mph) 222 km/h (138 mph) 225 km/h (140 mph) 255 km/h (158 mph)

     

Gallery

Gallery
History of Automotive by decade and manufacturer     BMW E24 6 Series car history from 1976 to 1989     List of vehicles   BMW E24 6 Series   production by Decade.

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