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Alfa Romeo 20/30 HP ES Sport

Bodywork

type 4/5S SAL
doors 4

Engine information

Bore × stroke 102.00 mm x 130.00 mm 4.02 in x 5.12 in
Cylinders S-4
Displace 4.8 litre 4750 cc (289.863 cu in)
Engine type SV
Valves 2 valves per cylinder | 8 valves in total
Engine construction cast iron block
Sump
Compression ratio 4.45:1
Fuel system 1 Ze carb
Maximum power 67.9 PS (67.0 bhp) (50 kW) @ 2600 rpm
0-50 mph
0-60 mph
0-100 mph -1.00 s
0-100 km/h
80 - 120 km/h
402 m (Quarter mile)
Standing km
Top speed 130 km/h (81 mph)
Fuel consumption
CO2 emissions
Power to weight ratio 55.83 bhp/ton
Specific output
Maximum torque
bmep
Specific torque
Maximum rpm
Code
Main bearings
Coolant Water
Bore / stroke ratio 0.78
Unitary capacity 1187.5 cc/cylinder
Aspiration Normal
Compressor type N/A
Intercooler None
Catalytic converter N

Dimensions and weight

wheelbase 2800 mm
wheelbase 110.2 in
Length (milimeters) 4700 mm
Length (inches) 185 in
Width (milimeters) 1780 mm
Width (inches) 70.1 in
Height (milimeters) 1700 mm
Height (inches) 66.9 in
L:W ratio 1.68
Ground clearance (milimeters)
Ground clearance (inches)
Kerb weight (kilograms) 1200 kg
Kerb weight (pounds) 2646 lb
Weight distribuiton
Fuel capacity (litres)
Fuel capacity (UK Ga)
Fuel capacity (US Gal)

Aerodynamics

Drag coefficient
Frontal area
Cx

Chassis

Engine location Front
Engine alignment Longitudinal
Drive RWD
Steering
Turns lock-to-lock
Turning circle
Tyres 820 x 120
Wheels
Brakes F/R -/Dr
Brake ∅
Braked area
Transmission 4M
Top gear ratio 1.00
Final drive ratio

General information

RAC rating 25.8
Number made 124
Model code
Model family
Insurance classification No information available
Tax band No information available

Manual Download

Download 1921 Alfa Romeo 20/30 HP ES Sport PDF Manual
20/30 HP ES Sport picture
Designer unknown
Year 1921

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