BMW E9 CSL group 2 (1973)
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CSL = Coupe Sport Leicht
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Factory prepared race cars: 1972 - 21 vehicles – VIN 2275979 – 2276000

Specifications

4 units built for group 2
21 units built
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Click here and here for 3.5 CSL group 2
Click here for street version article

Homologation number: 1648
Homologation start: 1/1/1973

1973
89.3 x 80.0, 3003 cc, 324 HP / 7000
3331 cc
SOHC, 2 valves/cyl - 12 valves total

1974 2v
94.0 x 84.0, 3498 cc, 385 HP/7900
SOHC, 2 valves/cyl - 12 valves total

1974 4v
BMW M49/2, straight 6 cyl, 4 stroke, petrol engine
3498cc, 94.0 x 84.0 mm
11.0:1
1974: 433 HP / 8500
1975: 440 bhp / 328 kw @ 8600 rpm
cast-iron block, aluminium alloy "crossflow" head
forged steel crankshaft with 7 main bearings
DOHC, 4 valves/cyl - 24 valves total
aspiration, natural with Bosch D-jetronic mechanical Fuel injection and Kugelfischer injection pump
firing order 1-5-3-6-2-4
water cooled

Group 5 (1976)
BMW M49/3, straight 6 cyl, 4 stroke, petrol engine
3498cc, 94.0 x 84.0 mm
470-485 HP @ 8700 rpm
cast-iron block, aluminium alloy "crossflow" head
forged steel crankshaft with 7 main bearings
DOHC, 4 valves/cyl - 24 valves total
aspiration, natural with Bosch D-jetronic mechanical Fuel injection and Kugelfischer injection pump
firing order 1-5-3-6-2-4
water cooled

BMW, straight 6 cyl, 4 stroke, petrol engine. Click here
90.0 x 84.0 mm
3195 cc
750 HP @ 9500 rpm
cast-iron block, aluminium alloy "crossflow" head
forged steel crankshaft with 7 main bearings
DOHC, 4 valves/cyl - 24 valves total
2 x turbochargers with Bosch D-jetronic mechanical Fuel injection and Kugelfischer injection pump
firing order 1-5-3-6-2-4
water cooled

Getrag 5 speed "close ratio" manual gearbox
final drive, 3.07/1
Unit Steel chassis with Aluminum Panels
rack and pinion steering
Length 4,630 mm (182.3 in)
Width 1,730 mm (68.1 in)
Height 1,370 mm (53.9 in)
Wheelbase 2,625 mm (103.3 in)
Track (fr/r) 1,470 mm (57.9 in) / 1,426 mm (56.1 in)
tires, front 12.5 x 16", rear 15.75 x 16". 1976 turbo: rear 14.5x19"
980-1080kg


Results in WSCC

All entries with 3498 cc engine, unless noted, and except 1973 season

Season

3331 cc
Car entry, chassis number Car number/ result
Dayt Vallel Dijon Monza Spa Targa Florio Nurb Le Man Zeltweg Watkins Glen
Team 24h 6h 1000km 1000km 1000km 1000km 24h 1000km 6h
BMW Motorsport GmbH #68, acci dent #50, acci dent
BMW Motorsport GmbH, 2275998 #69, 9th #51, 11th
B.M.W. Alpina #60, 7th #71, dnf
B.M.W. Alpina #64, 8th #70, dns
Racing T. Marabout #61, dnt qualify
Scuderia Brescia Corse #191, 35th
André Wicky Racing Team #58, eng ine
Hans Menzel/ Vittorio Brambilla #86, in entry list
Marabant Racing Team #87, in entry list
Statistics
Starts/finishes 11/5 3/2 1/1 4/1 3/1
Driver Team entries and car number
BMW Motorsport GmbH
Hans-Joachim Stuck 68 50
Chris Amon 68 50
Toine Hezemans 69 51
Dieter Quester 69 51
B.M.W. Alpina
Hans-Joachim Stuck 60, 64
Niki Lauda 60 70
Brian Muir 64 70
Hans-Peter Joisten 71
Helmut Rösser 71
Racing T. Marabout
Jean Xhenceval 61
Willy Braillard 61
Scuderia Brescia Corse
"Shangri-La" 191
Alessandro Federico 191
André Wicky Racing Team
Walter Brun 58
Cox Kocher 58
Jean-Pierre Aeschlimann 58
Marabant Racing Team
Willy Braillard 87
Jean Xhenceval 87

Article from Motorsport Sib (4/2011)
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bmw-csl-2.jpg Source
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Drawings

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320 turbo
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