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Lotus Seven S4

Bodywork

type 2S RDSR
doors 2

Engine information

Bore × stroke 80.96 mm × 77.60 mm 3.19 in × 3.06 in
Cylinders S-4
Displace 1.6 litre 1599 cc (97.577 cu in)
Engine type OHV
Valves 2 valves per cylinder | 8 valves in total
Engine construction
Sump
Compression ratio 9.00:1
Fuel system 1 We carb
Maximum power
0-50 mph
0-60 mph
0-100 mph
0-100 km/h
80 - 120 km/h
402 m (Quarter mile)
Standing km
Top speed
Fuel consumption
CO2 emissions
Power to weight ratio 145.76 bhp/ton
Specific output
Maximum torque
bmep 982.4 kPa (142.5 psi)
Specific torque 78.17 Nm/litre
Maximum rpm
Code
Main bearings
Coolant Water
Bore / stroke ratio 1.04
Unitary capacity 399.75 cc/cylinder
Aspiration Normal
Compressor type N/A
Intercooler None
Catalytic converter N

Dimensions and weight

wheelbase 2286 mm
wheelbase 90 in
Length (milimeters) 3702 mm
Length (inches) 145.7 in
Width (milimeters) 1537 mm
Width (inches) 60.5 in
Height (milimeters) 1124 mm
Height (inches) 44.3 in
L:W ratio 1.62
Ground clearance (milimeters) 114 mm
Ground clearance (inches) 4.5 in
Kerb weight (kilograms) 590 kg
Kerb weight (pounds) 1301 lb
Weight distribuiton
Fuel capacity (litres) 34.1 litre
Fuel capacity (UK Ga) 7.5 UK Gal
Fuel capacity (US Gal) 9 US Gal

Aerodynamics

Drag coefficient
Frontal area
Cx

Chassis

Engine location Front
Engine alignment Longitudinal
Drive RWD
Steering
Turns lock-to-lock 2.800
Turning circle 9.10 m
Tyres
Wheels
Brakes F/R Di/Dr
Brake ∅
Braked area
Transmission 4M
Top gear ratio 1.00
Final drive ratio 3.77

General information

RAC rating 16.3
Number made
Model code
Model family
Insurance classification No information available
Tax band No information available

Manual Download

Download 1970 Lotus Seven S4 PDF Manual
Designer unknown
Year 1970

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