BMW E9

Predecessor

Main article: BMW New Class

The E9's predecessors are the 2000 C and 2000 CS models, which were produced from 1965 to 1969 as part of the BMW New Class range.

Models

2800 CS

The first of the E9 coupés, the 2800 CS, replaced the 2000 C and 2000 CS in 1968. The lead designer was Wilhelm Hofmeister. The wheelbase and length were increased to allow the engine bay to be long enough to accommodate the new straight-six engine code-named M30, and the front of the car was restyled to resemble the E3 sedan. The rear axle, however, remained the same as that used in the lesser "Neue Klasse" models and the rear brakes were initially drums - meaning that the 2800 saloon was a better performing car, as it was also lighter. The CS' advantages were thus strictly visual to begin with. The 2800 CS used the 2788 cc version of the engine used in the E3 sedans. The engine produced 125 kW at 6000 rpm.

Not only was the 2800 CS lighter than the preceding 2000 CS, it also had a smaller frontal area, further increasing the performance advantage. The curb weight of the 2800 CS is 1420 kg.

At the 1969 Geneva Motor Show, BMW unveiled the "2800 Bertone Spicup" concept car. This model, which has a similar appearance to the 1967 Alfa Romeo Montreal, did not reach production.

3.0 CS/CSi

The 2800CS was replaced by the 3.0 CS and 3.0 CSi in 1971, which was bored out to give a displacement of 2986 cc. The 3.0 CS has a 9.0:1 compression ratio, twin carburetors and produces 180 hp at 6000 rpm. The 3.0 CSi has a 9.5:1 compression ratio, Bosch D-Jetronic electronic fuel injection, and produces 200 hp at 5500 rpm. Transmission options were a 4-speed manual or a 3-speed automatic.

In the United States, 1974 models have protruding 5 mile per hour bumpers.

3.0 CSL

Introduced in May 1972, the 3.0 CSL was a homologation special built to make the car eligible for racing in the European Touring Car Championship. 1,265 were built.

The "L" in the designation meant leicht (light), unlike in other BMW designations, where it meant lang (long). The lightness was achieved by using thinner steel to build the unit body, deleting the trim and soundproofing, using aluminium alloy doors, bonnet, and boot lid, and using Perspex side windows. The five hundred 3.0 CSLs exported to the United Kingdom were not quite as light as the others, as the importer had insisted on retaining the soundproofing, electric windows, and stock E9 bumpers on these cars. The CSL was not sold in the United States.

Initially using the same engine as the 3.0 CS, the 3.0 CSL was given a very small increase in displacement to 3003 cc by increasing the engine bore by one quarter of a millimetre to 89.25 mm. This was done in August 1972 to allow the CSL to be raced in the "over three litre" racing category, allowing for some increase in displacement in the racing cars. In 1973, the engine in the 3.0 CSL was given another, more substantial increase in displacement to 3153 cc by increasing the stroke to 84 mm, rated at 206 PS at 5600 rpm and 286 Nm at 4200 rpm of torque . This final version of the 3.0 CSL was homologated in July 1973 along with an aerodynamic package including a large air dam, short fins running along the front fenders, a spoiler above and behind the trailing edge of the roof, and a tall rear wing. The rear wings were not installed at the factory, but were left in the boot for installation after purchase. This was done because the wings were illegal for use on German roads. The full aero package earned the racing CSLs the nickname "Batmobile".

The CSL competed in Group 2 form in the European Touring Car Championship, with CSL drivers winning the Drivers title six times in the years 1973 and 1975 to 1979. The CSL also competed in Group 5 Special Production guise, winning three rounds of the 1976 World Championship for Makes. In FIA Group 4 spec, notably when driven by Hans-Joachim Stuck (car featured in Enthusia Professional Racing), they competed against racing versions of the Porsche 911 and Ford Capri with some success.

File:BMW 30 CSL 1973 orange vr TCE.jpg File:FoS20162016 0624 104939AA (27608452420).jpg|alt= File:BMW 3.0 CSL (5710918715).jpg

2.5 CS

The last version of the E9 to be introduced was the 2.5 CS in 1974. This was a response to the 1973 oil crisis, such that the buyer could choose the smaller, more economical engine. The engine, from the 2500 sedan, displaced 2494 cc and produced 150 hp at 6000 rpm. Only 874 were made until the end of E9 production in 1975, and none were exported to the United States.

Motorsport

In 1973, Toine Hezemans won the European Touring Car Championship in a 3.0 CSL and co-drove a 3.0 CSL with Dieter Quester to a class victory at Le Mans. Hezemans and Quester had driven to second place at the 1973 German Touring Car Grand Prix at Nürburgring, being beaten only by Chris Amon and Hans-Joachim Stuck in another 3.0 CSL. 3.0 CSLs would win the European Touring Car Championship again in every year from 1975 to 1979.

The 3.0 CSL was raced in the 1975 IMSA GT Championship, with Sam Posey, Brian Redman, and Ronnie Peterson winning races during the season.

The 3.5 CSL was built for Group 5 racing and BMW won three races in the 1976 World Championship for Makes with this model.

Art Cars

The first two BMW Art Cars were 3.0 CSLs; the first was painted by Alexander Calder and the second by Frank Stella.

File:Calder CSL.jpg|3.0 CSL painted by Alexander Calder File:Concours élégance Villa Este 53.JPG|alt=|3.0 CSL painted by Frank Stella

Production numbers

2015 3.0 CSL Hommage

In 2015, BMW introduced the 3.0 CSL Hommage concept car at the Concorso d'Eleganza Villa d'Este. The car is a tribute to the 3.0 CSL. It has an inline-six engine with an hybrid system in the rear of the car. As a homage to the original, the 3.0 CSL Hommage has a minimal interior to keep the weight as low as possible; carbon fibre and aluminium are used in the cockpit for the same reason. The Hommage has Laser-LED lights similar to those in the i8. File:BMW 3.0 CSL Hommage 04.JPG File:BMW 3.0 CSL Hommage 05.JPG File:BMW 3.0 CSL Hommage 07.JPG And in August 2015, BMW introduced the BMW 3.0 CSL Hommage R concept car at the Pebble Beach Concours d'Elegance. The car celebrates both the 40th anniversary of BMW in North America and the racing success of the 3.0 CSL in 1975. File:Festival automobile international 2016 - BMW 3.0 CSL Hommage - 021.jpg File:Festival automobile international 2016 - BMW 3.0 CSL Hommage - 001.jpg

2023 3.0 CSL

Main article: BMW_M4#3.0_CSL

On 24 November 2022, BMW revealed an all-new 3.0 CSL based on the BMW M4, paying homage to the original E9 3.0 CSL. It features a more powerful 3.0-liter Inline-six cylinder engine producing 412 kW and 550 Nm of torque and was built to celebrate BMW M's 50th Anniversary. 50 units were produced.

BMW, Auto 2024, Zurich (PANA0914-crop).jpg|2023 BMW 3.0 CSL BMW 3.0 CSL (52687267795-crop).jpg|2023 3.0 CSL, rear

Notes

References

References

1. "1961 to 1970". Karmann.com.
2. "Detailed specs review of 1971 BMW 2800 CS".
3. "Rare BMW concepts from the sixties".
4. "1973 BMW 3.0 CSL E9 specifications".
5. [http://homepage.mac.com/frank_de_jong/Pages/ETCC.html The European Touring Car Championship] Retrieved on 30 July 2010
6. (February 3, 2025). "BMW Motorsport and the Mighty CSL Win The 1975 12 Hours of Sebring".
7. Cobb, Bill. (March 16, 2017). "GO LIKE SCHNELL: The Story of BMW Motorsport in the USA. Green Flag 1975.". BMW USA Classic.
8. "E9 Production by Year". e9-Driven.com.
9. "BMW 3.0 CSL Hommage evokes classic 1970s Bimmer design".
10. "BMW 3.0 CSL Hommage R. The perfect fusion of driver and machine.".
11. (28 November 2022). "2023 BMW 3.0 CSL Revealed: See its Price, Specs, and Features".