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Allard J2R

(1952 model)

Brief specs of 1952 Allard J2R

2-door 2-seater roadster, petrol (gasoline) 8-cylinder 16-valve V engine, OHV (overhead valve, I-head), 5416 cm3 / 330.5 cu in / 330.5 cu in, 186.4 kW / 250.0 hp / 250.0 hp @ 2800 rpm / 2800 rpm / 2800 rpm, 508.0 N·m / 374.7 lb·ft / 374.7 lb·ft @ 2800 rpm / 2800 rpm / 2800 rpm, rear wheel drive, 241 km/h / 150 mph / 150 mph top speed

units: metric UK US

Basic (general) data

Marque (make)AllardIssued from1952
ModelJ2RIssued until
SerieJNumber made
Model familyBody construction
Model codeBody designation
ManufacturerAllardCountryUK

Bodywork

Base platformNumber of doors2
Bodywork typeroadsterNumber of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length3810 mm / 150.0 in / 150.0 inTotal (curb) weight998 kg / 2200 lb / 2200 lb
Width1500 mm / 59.1 in / 59.1 inDry weight
Height876 mm / 34.5 in / 34.5 inLoad capacity
Wheelbase2438 mm / 96.0 in / 96.0 inGross (max.) weight
Track front1295 mm / 51.0 in / 51.0 inTowing weight
Track rear1245 mm / 49.0 in / 49.0 inWeight distribution (front)
Ground clearanceFuel capacity38 l / 8.4 UK gal / 10.0 US gal
Length/wheelbase ratio1.56  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.12 m2 / 12.0 sq ft / 12.0 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders8
Engine TypeV engine (V8)Total number of valves16
Engine ManufacturerGMValves per cylinder2
Engine constructionBore96.8 mm / 3.81 in / 3.81 in
Fuelpetrol (gasoline)Stroke92.0 mm / 3.62 in / 3.62 in
Fuel detailsBore/Stroke ratio1.05
Fuel supply2 Ro carbsEngine displacement5416 cm3 / 330.5 cu in / 330.5 cu in
Engine Main bearingsUnitary capacity677.00 cm3/cylinder / 41.313 cu in/cylinder / 41.313 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio10.0 : 1
SumpMax. output power186.4 kW / 250.0 hp / 250.0 hp at 2800 rpm / 2800 rpm / 2800 rpm
AspirationnaturalMax. torque508.0 N·m / 374.7 lb·ft / 374.7 lb·ft at 2800 rpm / 2800 rpm / 2800 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)53.1 kW / 71.1 hp / 71.1 hp (est.)
CoolantwaterSpecific output34.4 kW/l / 0.756 bhp/cu in / 0.756 bhp/cu in
Catalytic converternoSpecific torque93.8 N·m/l / 0.82 lb·ft/cu in / 0.82 lb·ft/cu in

Transmission

Transmission typeNumber of gears
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio3.29

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed241 km/h / 150 mph / 150 mph
Acceleration 0-60 mph (97 km/h)7.00 s / 7.00 s / 7.00 sPower-to-weight ratio250.5 kW/ton / 189.8 bhp/ton / 189.8 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 frontSuspension rear
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontBrakes rear
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Allard J2R

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