Citroen SM Serie SB group 2 (1971)

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Specifications

7133 units built
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Engine manual

Engine
Group/Class	2	Homologation number: 628, 1618 and 5348
Years active	1971-1972	Homologation start: 1/4/1977, 1/7/1971 and 1/1/1972 Homologation end: 1/7/1971, 1/1/1972 and 31/12/1979
Type	Maserati C114-1, V6 (90^o) cyl, 4 stroke		located front longitudinal behind front axle
Capacity	2670 cc		WRC: 2670 cc
Bore x Stroke (mm)	87.0 x 75.0
Compression ratio	9.0:1
Output power - torgue	170 HP @ 5500 rpm		23.5 kgm @ 4000 rpm
Main bearings	4 of 76 mm diameter		steel connecting rod with big end bearing diameter 57mm, aluminium alloy piston with 37.7mm compression height
Materials	block: aluminium alloy with cast iron cylinder liners		cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers
Cams/valves	2 x 2 overhead camshafts (DOHC), chain driven		2 valves/cyl. - 12 valves total. 42 mm inlet valve diameter, 36 mm exhaust valve diameter. 1 coil spring per valve
Aspiration	natural, 3 x Weber 42 DCNF2 carburetors
Ignition	electronic, 12V battery
Cooling system	jacketed watercooled with pump, radiator, 304 mm diameter-10 blades fan and thermostat		13 lt
Lubrication system	wet sump		7 lt
Transmission
Type	front wheel drive		Citroen, 5 speed manual gearbox
Gearbox ratios	1st: 2.92/1 (38/13) 2nd: 1.941/1 (33/17) 3rd: 1.321/1 (37/28) 4th: 0.969/1 (32/33) 5th: 0.757/1 (28/37) R: 3.154/1 (41/22x22/13)		1st: 3.25/1 (39/12) 2nd: 1.833/1 (33/18) 3rd: 1.207/1 (35/29) 4th: 0.852/1 (23/27) R: 3.154/1 (41/22x22/13)
Diffrential ratio	4.857/1 (34/7), 4.375/1 (35/8)		helical gears limited slip front differential
Clutch	dry single disc, 230 mm disc diameter
Chassis-body
Type	steel monocoque mounted on twin longeron main frame SB chassis with roll-cage. 2 door coupe steel bodyshell with steel bumbers
Front suspension	upper and lower transverse arms with anti-dive geometry, hydropneumatic spring/damper units, anti-roll bar
Rear suspension	trailing arms, hydropneumatic spring/damper units, anti-roll bar
Steering system	rack and pinion with hydraulic servo assistance			2 turns lock to lock
Brakes	front solid disks 300mm diameter with 2 piston calipers and 60 mm piston diameter, rear solid discs 255 mm diameter and 2 piston calipers 32mm diameter				dual circuit
Dimensions
length: 4.893 m (192.6")		width: 1.836 m (72.3")	height: 1.324 m (52.1")
wheelbase: 2.950 m (116.1")		front track: 1.526 m (60.1)	rear track: 1.326 m (52.2)
Rims - tires	steel rims 6" x 15"			195/70 VR 15
Weight	1380 kg
Fuel tank	90 lt
Drag coefficient	0.33

Results in WSCC

1972

Season


Car entry, chassis number	Car number/ result
	Buenos Ayres	Dayt	Sebring	Brands Hatch	Monza	Spa	Targa Florio	Nurb	Le Man	Zeltweg	Watkins Glen
Team	1000km	6h	12h	1000km	1000km	1000km		1000km	24h	1000km	6h
A.G.A.C.I.									#55, dnt qualify
Claude Laurent									in entry list

Statistics
Works Starts/finishes 2/2									1/0
Driver	Team entries and car number
A.G.A.C.I.
Guy Verrier									55
Gérard Foucault									55

Results in WRC

Races

Works team: Citroen Total

Season

Group 4

Entry		Rally event
Driver Codriver	Team	M.C	SVE Entry list	S.R	KEN	MAR	A	GRE	RAC Entry list

Jean Deschaseaux Jean Plassard	works					1st
Jean-Pierre Nicolas Jean De Alexandris	works					dnf

Total points ()	10					10
Statistics
Works starts/finishes	2/1					2/1