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Jensen 541R

(1957 model)

Brief specs of 1957 Jensen 541R

2-door 2+2-seater fixed-head coupé, petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, OHV (overhead valve, I-head), 3990 cm3 / 243.5 cu in / 243.5 cu in, 113.3 kW / 151.9 hp / 151.9 hp @ 4100 rpm / 4100 rpm / 4100 rpm, 308.0 N·m / 227.2 lb·ft / 227.2 lb·ft @ 2400 rpm / 2400 rpm / 2400 rpm, manual with overdrive 4-speed transmission, rear wheel drive, 206 km/h / 128 mph / 128 mph top speed

units: metric UK US

Basic (general) data

Marque (make)JensenIssued from1957
Model541RIssued until
Serie541Number made
Model familyBody construction
Model codeBody designation
ManufacturerJensenCountryUK

Bodywork

Base platformNumber of doors2
Bodywork typefixed-head coupéNumber of seats2+2
Bodywork designerCargo capacity (volume)
Passenger space (volume)4250 l / 150.09 cu ft / 150.09 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4470 mm / 176.0 in / 176.0 inTotal (curb) weight1470 kg / 3241 lb / 3241 lb
Width1600 mm / 63.0 in / 63.0 inDry weight
Height1346 mm / 53.0 in / 53.0 inLoad capacity
Wheelbase2667 mm / 105.0 in / 105.0 inGross (max.) weight
Track front1318 mm / 51.9 in / 51.9 inTowing weight
Track rear1305 mm / 51.4 in / 51.4 inWeight distribution (front)53.0 % / 53.0 % / 53.0 %
Ground clearance178 mm / 7.0 in / 7.0 inFuel capacity68 l / 15.0 UK gal / 18.0 US gal
Length/wheelbase ratio1.68  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.83 m2 / 19.7 sq ft / 19.7 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) (Inline, 6 cylinder)Total number of valves12
Engine ManufacturerBMCValves per cylinder2
Engine constructionBore87.3 mm / 3.44 in / 3.44 in
Fuelpetrol (gasoline)Stroke111.1 mm / 4.37 in / 4.37 in
Fuel detailsBore/Stroke ratio0.79
Fuel supply3 SU carbsEngine displacement3990 cm3 / 243.5 cu in / 243.5 cu in
Engine Main bearingsUnitary capacity665.00 cm3/cylinder / 40.581 cu in/cylinder / 40.581 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio7.6 : 1
SumpMax. output power113.3 kW / 151.9 hp / 151.9 hp at 4100 rpm / 4100 rpm / 4100 rpm
AspirationnaturalMax. torque308.0 N·m / 227.2 lb·ft / 227.2 lb·ft at 2400 rpm / 2400 rpm / 2400 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)48.8 kW / 65.4 hp / 65.4 hp (est.)
CoolantwaterSpecific output28.4 kW/l / 0.624 bhp/cu in / 0.624 bhp/cu in
Catalytic converternoSpecific torque77.2 N·m/l / 0.68 lb·ft/cu in / 0.68 lb·ft/cu in

Transmission

Transmission typemanual with overdriveNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio0.79
  Final gear (drive) ratio3.54

Performance

Acceleration 0-50 mph (80 km/h)7.60 s / 7.60 s / 7.60 sTop (maximal) speed206 km/h / 128 mph / 128 mph
Acceleration 0-60 mph (97 km/h)10.60 s / 10.60 s / 10.60 sPower-to-weight ratio103.4 kW/ton / 78.3 bhp/ton / 78.3 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)30.20 s / 30.20 s / 30.20 sFuel 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
Steeringrack & pinionSteering details
Turns lock-to-lock2.3Turning circle10.4 m / 34.1 ft / 34.1 ft
Suspension frontIndependent, Coil springs, Wishbone (A-arm, control arm)Suspension rearLive axle, Semi-elliptic leaf springs, Panhard rod
Wheels frontWheels rear
Tyres front6.40-15Tyres rear6.40-15
Brakes frontdiscBrakes reardisc
Brake diameter front279 mm / 11.0 in / 11.0 inBrake diameter rear279 mm / 11.0 in / 11.0 in
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of Jensen 541R

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