Mercedes C107 500 SLC group 2 (1979)
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Home » Rally Cars » Mercedes C107 500 SLC
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Mercedes 280 S engine

Specifications

Click here for 450 SLC 5.0 '79
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Click here for 500 SL '81
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Group/Class 4/4 and 2 Homologation number: 661, 1706 and B216
Years active 1979-1981 Homologation start: 1/4/1979, 1/7/1980 and 1/7/1982
Homologation end: 31/12/1981 and 31/12/1986
Engine
Type Mercedes M117 E50, V8 cylinder (90°), 4 stroke located front longitudinal
Capacity 4973 cc, group 4: 5025 cc WRC: 4973 cc, group 4: 5025 cc
Bore x Stroke (mm) 96.5 x 85.0. group 4: 97.0 x 85.0
Compression ratio 10.8:1
Output power - torgue 310-340 HP @ 6400 rpm 43 kgm @ 4300 rpm
Main bearings forged steel cross plane crankshaft with 5 main bearings 52mm big end journal diameter
Materials block: aluminium alloy with cast iron cylinder liners, 112.5mm bore spacing cylinderhead: 2 x cross flow aluminium alloy with "wedge" combustion chambers
Cams/valves 2 x 1 overhead camshafts (SOHC), duplex chain driven 2 valves/cyl. - 16 valves total. 33mm inlet valves diameter, 29.5mm exhaust valves diameter
Aspiration natural, Bosch K-jetronic mechanical multi point fuel injection
Ignition electronic, firing order 1 5 4 8 6 3 7 2
Cooling system jacketed watercooled with pump, radiator, fan and thermostat
Lubrication system dry sump
Transmission
Type rear wheel drive Mercedes 722.0 hydraulically controlled, 3-speed torque converter automatic gearbox
Gearbox ratios 1st: 2.31/1
2nd: 1.46/1
3rd: 1.00/1
R: 1.84/1
1980: 1st: 3.68/1
2nd: 2.41/1
3rd: 1.44/1
4th: 1.00/1
R: 5.14/1
Diffrential ratio 2.72/1 (49/18), 3.46/1 (45/13), 3.06/1 (52/17), 3.69/1 (48/13), 4.08/1 (49/12) hypoid spiral bevel gears limited slip rear differential
Clutch torque converter
Chassis-body
Type steel monocoque Mercedes W107 chassis with front suspension transverse sub-frame bridge, rear suspension V-shaped sub-frame bridge, roll-cage. 2 door hardtop coupe bodyshell with aluminium doors
Front suspension double A wishbones with oil springs, telescopic gas shock absorbers and antiroll bar
Rear suspension semi trailing arm (45o) with coil springs, telescopic gas shock absorbers and antiroll bar
Steering system hydraulic servo assistance 12.2/1 ratio, 3.3 turns lock to lock
Brakes front ventilated discs 273mm diameter with 2 piston calipers 57/60mm diameter. Rear solid discs 273mm diameter with 2 piston calipers 38/42mm diameter.
1980: rear 2 piston calipers 45mm diameter
1980: front ventilated discs 300mm diameter with 4 aluminium piston calipers. 42mm diameter Rear ventilated discs 304mm diameter with 2 aluminium piston calipers 44mm diameter
dual circuit with vacuum servo, 1980: adjustable ratio split front to rear
Dimensions
length: 4.750 m (160.6") width: 1.782 m (63.0") height: 1.330 m (52.4")
wheelbase: 2.815 m (94.5") front track: 1.452 m (57.2") rear track: 1.440 m (56.7")
Rims - tires 6.5J x 14" H2, 7x15" or 11x15" 205/70 VR 14
Weight 1350-1450 kg
Fuel tank 120 lt

Results in WRC

Races

Works team: Daimler Benz

Season

Group 4
Entry Rally event
Driver
Codriver
Team MC SVE
Entry list
POR KEN GRE N.Z FIN C.Q S.R TdC
Entry list
RAC
Entry list
CdI
Hannu Mikkola
Arne Hertz
works 2nd 1st
Björn Waldegård
Hans Thorszelius
works 6th 2nd
Vic Preston, Jr
John Lyall
works under guard 4th
Andrew Cowan
Klaus Kaiser
works 3rd
Pfuhl
Leininger
dnf
Total points
()
48 14 34
Statistics
Others starts/finishes 8/6 3/2 5/4

1980+TAP80Mercedes.JPG Source
Ingvar Carlsson in rally Portugal '80
1980-500SLC-on-Bandama-rallye.jpg Source
Bandama '80
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Rear suspension
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Drawings

slc.jpg Source
500slc.jpg Source
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