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Alvis Speed 25 SC

(1938 model)

Brief specs of 1938 Alvis Speed 25 SC

4-door 5-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, OHV (overhead valve, I-head), 3571 cm3 / 217.9 cu in / 217.9 cu in, 79.0 kW / 105.9 hp / 105.9 hp @ 3800 rpm / 3800 rpm / 3800 rpm, manual 4-speed transmission, rear wheel drive, 156 km/h / 97 mph / 97 mph top speed

units: metric UK US

Basic (general) data

Marque (make)AlvisIssued from1938
ModelSpeed 25 SCIssued until
SerieSpeedNumber made
Model familyBody construction
Model codeBody designation
ManufacturerAlvisCountryUK

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length4826 mm / 190.0 in / 190.0 inTotal (curb) weight1854 kg / 4087 lb / 4087 lb
Width1778 mm / 70.0 in / 70.0 inDry weight
Height1600 mm / 63.0 in / 63.0 inLoad capacity
Wheelbase3150 mm / 124.0 in / 124.0 inGross (max.) weight
Track front1422 mm / 56.0 in / 56.0 inTowing weight
Track rear1422 mm / 56.0 in / 56.0 inWeight distribution (front)
Ground clearance178 mm / 7.0 in / 7.0 inFuel capacity77 l / 17.0 UK gal / 20.4 US gal
Length/wheelbase ratio1.53  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.42 m2 / 26.0 sq ft / 26.0 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) Total number of valves12
Engine ManufacturerAlvisValves per cylinder2
Engine constructionBore83.0 mm / 3.27 in / 3.27 in
Fuelpetrol (gasoline)Stroke110.0 mm / 4.33 in / 4.33 in
Fuel detailsBore/Stroke ratio0.75
Fuel supply3 SU carbsEngine displacement3571 cm3 / 217.9 cu in / 217.9 cu in
Engine Main bearings7Unitary capacity595.17 cm3/cylinder / 36.320 cu in/cylinder / 36.320 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio6.3 : 1
SumpMax. output power79.0 kW / 105.9 hp / 105.9 hp at 3800 rpm / 3800 rpm / 3800 rpm
AspirationnaturalMax. torque at
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)17.2 kW / 23.1 hp / 23.1 hp (est.)
CoolantwaterSpecific output22.1 kW/l / 0.486 bhp/cu in / 0.486 bhp/cu in
Catalytic converternoSpecific torque

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio4.11

Performance

Acceleration 0-50 mph (80 km/h)10.40 s / 10.40 s / 10.40 sTop (maximal) speed156 km/h / 97 mph / 97 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio57.2 kW/ton / 43.3 bhp/ton / 43.3 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent, Transverse leaf springSuspension rearLive axle, Semi-elliptic leaf springs
Wheels frontWheels rear
Tyres front5.50 x 19Tyres rear5.50 x 19
Brakes frontdrumBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Alvis Speed 25 SC

Infobox

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