1970 Lotus Seven S4

The Seven S4 is a rear wheel drive roadster motor vehicle with a front placed engine, manufactured by Lotus. The 4 cylinder, overhead valve naturally aspirated engine has 2 valves per cylinder and a displacement of 1.6 litres. For this model it develops power and torque figures of 86 bhp (87 PS/64 kW) at 5500 rpm and 125 Nm (92 lbft/12.7 kgm) at 4000 rpm respectively. A 4 speed manual 'box delivers the power to the driven wheels. Quoted weight at the kerb is 590 kg.
Full specs

Body type
2 door roadster with 2 seats
Length
3702 mm
Weight
590 kg
Engine type
naturally aspirated petrol
Engine size
1.6 litre
Cylinders
4, Straight
Power
87 PS / 86 bhp / 64 kW @ 5500 rpm
Torque
125 Nm / 92 ft.lb / 12.7 kgm @ 4000 rpm

1970 Lotus Seven S4

1970 Lotus Seven S4
Carrosserie
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Carrosserie	2 seater roadster
Nombre de portes	2
Designer
Dimensions et poids
Empattement	2286	90
Voies AV	1245	49
Voies AR	1321	52
Longueur	3702	145.7
Largeur	1537	60.5
Hauteur	1124	44.3
Garde au sol	114	4.5
	1.62
Poids avec pleins	590 kg	1301
Répartition poids AV
Réservoir à essence	34.1 litres	7.5 [9] UK [US] gal.
Caractéristiques aérodynamique
Coefficient de pénétration
maître-couple
SCx

	naturally aspirated petrol
Constructeur du moteur
Type moteur
Cylinders	Straight 4
Cylindrée	1.6 litre 1599 cc (97.577 cu in)
Alésage × Course	80.96 × 77.6 mm 3.19 × 3.06 in
Rapport alésage / course	1.04
Distribution	overhead valve (OHV) 2 Soupapes par cylindre 8 Total vannes
Puissance maximale (DIN)	87 PS (86 bhp) (64 kW) à 5500 tr/mn
Couple maximale (DIN)	125 Nm (92 ft·lb) (12.7 kgm) à 4000 tr/mn
Specific output (DIN)	40.1 kW/litre 54.5 ps/litre 53.8 bhp/litre 0.88 bhp/cu in
(DIN)	78.17 Nm/litre 0.94 ft·lb/cu³
Construction
Lubrification
Taux de compression	9:1
Carburant	1 We carb
bmep (brake mean effective pressure)	982.4 kPa (142.5 psi)
Régime maximal
Nombre de paliers de vilebrequin
Refroidissement	Water
Cylindrée Unitaire	399.75 cc
Aspiration	Normal
Compressor	N/A
Intercooler	None
Catalyseur	N
Performances
0-80km/h
0-60mph
0-100km/h
0-160km/h
0-400m
0-1000m
Vitesse
Power-to-weight ratio	Higher is better 147.79 PS/tonne (1000 kg) 0.15 PS/kg 108.7 kW/tonne (1000 kg) 0.11 kW/kg 145.76 bhp/tonne (1000 kg) 0.15 bhp/kg 0.07 bhp/lb
Weight-to-power ratio	Lower is better 9.2 kg/kW 15.37 lb/bhp
Consommation
Consommation
universal fuel consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
Emissions de CO₂
Emissions de CO₂
Carfolio Calculated CO₂ ^?
VED band (UK)
CO₂ Effizienz (DE)
Châssis
Emplacement de moteur	front
Engine layout	longitudinal
Traction	rear wheel drive
Répartition du couple	N/A
Direction
turns lock-to-lock	2.800
Turning circle	9.10 m
Suspension AV	I.CS.
Suspension AR	LA.CS.
Roues AV
Roues AR
Pneumatiques AV
Pneumatiques AR
Freins AV/AR	Di/Dr
Diamètre des freins AV
Diamètre des freins AR
Braked area	1587 cm²
Transmission	4 speed manual
Rapport de démultiplication supérieure	1
Rapport de pont	3.77
Généralités
Carfolio.com ID	62865
Production total
Type mines
RAC rating	16.3
Insurance classification	No information available
Tax band	No information available
1970 Lotus Seven S4 added before December 1995. Last modified 2013-02-28.