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Armstrong Siddeley 25

Bodywork

type 4/5S SAL
doors 0

Engine information

Bore × stroke 82.50 mm × 114.30 mm 3.25 in × 4.5 in
Cylinders S-6
Displace 3.7 litre 3670 cc (223.957 cu in)
Engine type OHV
Valves 2 valves per cylinder | 12 valves in total
Engine construction
Sump
Compression ratio
Fuel system 1 SU carb
Maximum power 86.2 PS (85.0 bhp) (63.4 kW) @ 3500 rpm
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 44.04 bhp/ton
Specific output
Maximum torque
bmep
Specific torque
Maximum rpm
Code
Main bearings
Coolant Water
Bore / stroke ratio 0.72
Unitary capacity 611.67 cc/cylinder
Aspiration Normal
Compressor type N/A
Intercooler None
Catalytic converter N

Dimensions and weight

wheelbase 3124 mm
wheelbase 123 in
Length (milimeters) 4724 mm
Length (inches) 186 in
Width (milimeters) 1753 mm
Width (inches) 69 in
Height (milimeters)
Height (inches)
L:W ratio 1.51
Ground clearance (milimeters) 140 mm
Ground clearance (inches) 5.5 in
Kerb weight (kilograms) 1930 kg
Kerb weight (pounds) 4255 lb
Weight distribuiton
Fuel capacity (litres) 72.7 litre
Fuel capacity (UK Ga) 16 UK Gal
Fuel capacity (US Gal) 19.2 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
Wheels
Brakes F/R
Brake ∅
Braked area
Transmission 4P
Top gear ratio 1.00
Final drive ratio 4.36

General information

RAC rating 25.3
Number made
Model code
Model family
Insurance classification No information available
Tax band No information available

Manual Download

Download 1937 Armstrong Siddeley 25 PDF Manual
Designer unknown
Year 1937

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