1970 Citroën SM

Citroen SM - — Citroen SM
Image courtesy of Citroen

The Citroën SM is a coupé designed by Robert Opron with 2 doors and a front mounted engine which delivers the power through the front wheels. The Citroën SM's engine is a naturally aspirated petrol, 2.7 litre, double overhead camshaft 90 degree V 6 cylinder with 2 valves per cylinder. In this application it develops 178 bhp (180 PS/133 kW) of power at 6250 rpm, and maximum torque of 232 N·m (171 lb·ft/23.7 kgm) at 4000 rpm. The engine drives the wheels compliments of a 5 speed manual gearbox. Having a stated kerb weight of 1500 kg, the Citroën SM can dispense with the 0-60 mph sprint in 8.3 seconds and the quarter mile from rest in 16.5 seconds. Its maximum speed claimed is 229 km/h, which is 142 mph.
Full specs

Body type
2 door fixed-head coupé with 2+2 seats
Length
4893 mm
Weight
1500 kg
Engine type
naturally aspirated petrol
Engine size
2.7 litre
Cylinders
6, V
Power
180 PS / 178 bhp / 133 kW @ 6250 rpm
Torque
232 Nm / 171 ft.lb / 23.7 kgm @ 4000 rpm
Acceleration
0-60 mph 8.3 s
Acceleration
0-100 km/h 9.2 s
Top speed
229 km/h / 142 mph

1970 Citroën SM specifications

1970 Citroën SM data
bodywork
Français Deutsch Nederlands Italiano Español English
Body type	2+2 seater fixed-head coupé
Number of doors	2
Designer	Robert Opron
dimensions & weights
Wheelbase	2950 mm	116.1 inches
Track/tread (front)	1537 mm	60.5 inches
Track/tread (rear)	1346 mm	53 inches
Length	4893 mm	192.6 inches
Width	1836 mm	72.3 inches
Height	1321 mm	52 inches
Ground clearance	152 mm	6 inches
length:wheelbase ratio	1.66
Kerb weight	1500 kg	3307 lb
Weight distribution	62% front
fuel tank capacity	89.8 litres	19.8 [23.7] UK [US] gal.
aerodynamics
Drag coefficient
Frontal area
CdA
Powertrain
engine type	naturally aspirated petrol
Engine manufacturer	Maserati
Engine code	C114/03
Cylinders	V 6 in 90° vee
Capacity	2.7 litre 2670 cc (162.933 cu in)
Bore × Stroke	87 × 75 mm 3.43 × 2.95 in
Bore/stroke ratio	1.16
Valve gear	double overhead camshaft (DOHC) 2 valves per cylinder 12 valves in total
maximum power output (DIN)	180 PS (178 bhp) (133 kW) at 6250 rpm
maximum torque (DIN)	232 Nm (171 ft·lb) (23.7 kgm) at 4000 rpm
Specific output (DIN)	49.7 kW/litre 67.6 ps/litre 66.7 bhp/litre 1.09 bhp/cu in
Specific torque (DIN)	86.89 Nm/litre 1.05 ft·lb/cu³
Engine construction
Lubrication
compression ratio	9:1
Fuel system	Bo D-Jetronic fuel inj.
bmep (brake mean effective pressure)	1091.9 kPa (158.4 psi)
Maximum RPM
crankshaft bearings	4
Engine coolant	Water
Unitary capacity	445 cc
Aspiration	Normal
Compressor	N/A
Intercooler	None
Catalytic converter	N
performance
Acceleration 0-80km/h (50mph)	6.4 s
Acceleration 0-60mph	8.3 s
Acceleration 0-100km/h	9.2 s
Acceleration 0-160km/h (100mph)
Standing quarter-mile	16.5 s
Standing kilometre	30.2 s
Maximum speed	229 km/h (142 mph)
Power-to-weight ratio	Higher is better 120.32 PS/tonne (1000 kg) 0.12 PS/kg 88.49 kW/tonne (1000 kg) 0.09 kW/kg 118.67 bhp/tonne (1000 kg) 0.12 bhp/kg 0.05 bhp/lb
Weight-to-power ratio	Lower is better 11.3 kg/kW 18.88 lb/bhp
fuel consumption
Fuel consumption
universal fuel consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
Carbon dioxide emissions
Carbon dioxide emissions
Carfolio Calculated CO₂ ^?
VED band (UK)
CO₂ Effizienz (DE)
chassis
Engine position	front
Engine layout	longitudinal
Drive wheels	front wheel drive
Torque split	N/A
Steering
turns lock-to-lock	2.000
Turning circle	10.50 m
Front suspension	I.HPS.W.
Rear suspension	I.HPS.TA.
Wheel size front
Wheel size rear
Tyres front	205/70 VR 15
Tyres rear	205/70 VR 15
Brakes F/R	Di/Di-S
Front brake diameter	300 mm
Rear brake diameter	259 mm
Braked area
Gearbox	5 speed manual
Top gear ratio	0.75
Final drive ratio	4.38
general
Carfolio.com ID	25652
Production total
Model code
RAC rating	28.2
Insurance classification	No information available
Tax band	No information available
1970 Citroën SM added before December 1995. Last modified 2013-06-19.