1970 Citroën SM

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.

Pictures

Citroen SM -
Citroen SM
Image courtesy of Citroen
Citroen SM -
Citroen SM
Image courtesy of Citroen

Key facts

1970 Citroën SM information summary

What body style?
2 door fixed-head coupé with 2+2 seats
How long?
4893 mm
How heavy?
1500 kg
What size engine?
2.7 litre, 2670 cm3
How many cylinders?
6, V
How much power?
180 PS / 178 bhp / 133 kW @ 6250 rpm
How much torque?
232 Nm / 171 ft.lb / 23.7 kgm @ 4000 rpm
How quick?
0-60 mph: 8.3 s
How quick?
0-100 km/h: 9.2 s
How fast?
229 km/h, 142 mph

Citroën SM models

Citroen SM -
2 door fixed-head coupé FF 5M 2670 cm3 170 PS 168 bhp 125 kW 1450 kg
Citroën SM Automatic -
2 door fixed-head coupé FF 3A 2965 cm3 183 PS 180 bhp 134 kW 1480 kg

Similar models

BMW 3.0 CS -
2 door fixed-head coupé FR 4M 2986 cm3 180 PS 177.5 bhp 132 kW 1400 kg
Fiat 130 Coupé -
2 door fixed-head coupé FR 5M 3235 cm3 167 PS 165 bhp 123 kW 1559 kg
Fiat 130 Coupe Automatic -
2 door fixed-head coupé FR 3A 3235 cm3 167 PS 165 bhp 123 kW 1600 kg
1970 Citroën SM data
bodywork
Body type2+2 seater fixed-head coupé
Number of doors2
DesignerRobert Opron
dimensions & weights
mminches
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 UK Gal 23.7 US Gal
aerodynamics
Drag coefficient
Frontal area
CdA
engine
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
Specific output
(DIN)
66.7 bhp/litre
1.09 bhp/cu in
maximum torque
(DIN)
232 Nm (171 ft·lb) (23.7 kgm)
at 4000 rpm
Specific torque
(DIN)
86.89 Nm/litre
1.05 ft·lb/cu3
Engine construction
sump
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 120.32 PS/tonne (1000 kg)
88.49 kW/tonne (1000 kg)
118.67 bhp/tonne (1000 kg)
0.05 bhp/lb
Weight-to-power ratio 11.3 kg/kW
18.88 lb/bhp
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
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 ID25652
Production total
Model code
Model family
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.