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Jowett Jupiter Mk IA Convertible

(1952 model)

Brief specs of 1952 Jowett Jupiter Mk IA Convertible

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 1486 cm3 / 90.7 cu in / 90.7 cu in, 46.6 kW / 62.5 hp / 62.5 hp @ 4500 rpm / 4500 rpm / 4500 rpm, 114.0 N·m / 84.1 lb·ft / 84.1 lb·ft @ 3000 rpm / 3000 rpm / 3000 rpm, manual 4-speed transmission, rear wheel drive, 136 km/h / 85 mph / 85 mph top speed

units: metric UK US

Basic (general) data

Marque (make)JowettIssued from1952
ModelJupiter Mk IA ConvertibleIssued until
SerieJupiterNumber made
Model familyBody construction
Model codeBody designation
ManufacturerJowettCountryUK

Bodywork

Base platformNumber of doors2
Bodywork typedrophead coupé (convertible coupé)Number of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length4267 mm / 168.0 in / 168.0 inTotal (curb) weight860 kg / 1896 lb / 1896 lb
Width1575 mm / 62.0 in / 62.0 inDry weight
Height1422 mm / 56.0 in / 56.0 inLoad capacity
Wheelbase2362 mm / 93.0 in / 93.0 inGross (max.) weight
Track front1321 mm / 52.0 in / 52.0 inTowing weight
Track rear1283 mm / 50.5 in / 50.5 inWeight distribution (front)56.1 % / 56.1 % / 56.1 %
Ground clearanceFuel capacity
Length/wheelbase ratio1.81  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.58 m2 / 17.0 sq ft / 17.0 sq ft
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders4
Engine Typestraight (inline) Total number of valves8
Engine ManufacturerJowettValves per cylinder2
Engine constructionBore72.5 mm / 2.85 in / 2.85 in
Fuelpetrol (gasoline)Stroke90.0 mm / 3.54 in / 3.54 in
Fuel detailsBore/Stroke ratio0.81
Fuel supply2 Ze carbsEngine displacement1486 cm3 / 90.7 cu in / 90.7 cu in
Engine Main bearingsUnitary capacity371.50 cm3/cylinder / 22.670 cu in/cylinder / 22.670 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.0 : 1
SumpMax. output power46.6 kW / 62.5 hp / 62.5 hp at 4500 rpm / 4500 rpm / 4500 rpm
AspirationnaturalMax. torque114.0 N·m / 84.1 lb·ft / 84.1 lb·ft at 3000 rpm / 3000 rpm / 3000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)23.4 kW / 31.4 hp / 31.4 hp (est.)
CoolantwaterSpecific output31.4 kW/l / 0.689 bhp/cu in / 0.689 bhp/cu in
Catalytic converternoSpecific torque76.7 N·m/l / 0.67 lb·ft/cu in / 0.67 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio4.56

Performance

Acceleration 0-50 mph (80 km/h)11.70 s / 11.70 s / 11.70 sTop (maximal) speed136 km/h / 85 mph / 85 mph
Acceleration 0-60 mph (97 km/h)16.80 s / 16.80 s / 16.80 sPower-to-weight ratio72.7 kW/ton / 55.1 bhp/ton / 55.1 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, Torsion barSuspension rearLive axle, Torsion bar
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontBrakes rear
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Jowett Jupiter Mk IA Convertible

Infobox

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