Mercedes C107 500 SLC group 2 (1979)

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Source

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Specifications

1977-80, 450 SLC 5.0: 1636 units built
1980-81, 500 SLC: 1133 units built

Click here for 450 SLC 5.0 '79
Click here for 500 SLC '80
Click here for 500 SL '81
Click here for street version

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	450: 5025 cc, 500: 4973 cc		WRC: 450: 5025 cc, 500: 4973 cc
Bore x Stroke (mm)	450: 97.0 x 85.0, 500: 96.5 x 85.0
Compression ratio	10.8:1
Output power - torgue	450: 300-310, 500: 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 safari and on: 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

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Results in WRC

Races

Works team: Daimler Benz

1979

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

Season

Group 4 until Acropolis

Entry		Rally event
Driver Codriver	Team	M.C	(SVE) Entry list	POR	KEN	GRE	ARG	(FIN)	N.Z	S.R	TdC	RAC	CdI
Björn Waldegård Hans Thorszelius	works			4th	10th	head gasket	drive shaft		5th				1st
Ingvar Carlsson Claes Billstam	works			5th
Vic Preston, Jr John Lyall	works				3rd	14th							5th
Andrew Cowan Klaus Kaiser	works				6th				acci dent				acci dent
Hannu Mikkola Arne Hertz	works				rear axle		2nd		3rd				with drawn
Bror Danielsson Sölve Andreasson	works					stee ring
Jorge Recalde or Straimel	works						drive shaft						2nd+
Joginder Singh Parker Stevenson	American Sports Sales				14th
Total points ()	75			13	14		9		14				25
Statistics
Others starts/finishes	21/13			2/2	5/4	3/1	3/1		3/2				5/3

Works team
Portugal: C. Santos - Mercedes
Kenya: D.T. Dobie / Daimler-Benz
New Zealand: Cable-Price Corp. entry
Cote d'Ivory: SEACI entry

+Private entry

1981Season

Entry		Rally event
Driver Codriver	Team	M.C	(SVE) Entry list	POR	KEN	TdC	GRE	ARG	(BRA)	FIN	S.R	CdI	RAC
Holger Bohne Peter Diekmann											suspe nsion
Statistics
Others starts/finishes	1/0										1/0

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Source
Ingvar Carlsson in rally Portugal '80
Source
Bandama '80
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Rear suspension
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Front suspension

Drawings

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Front suspension

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Rear suspension

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1. Shock absorber.
2. Sway bar links.
4. Trailing arm bushings.
9. Subframe mounts.
12. Flex disks.
14. Drive shaft center support.
17. Rear axels.
18. Differential mount (rubber).