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Lea-Francis 18

(1949 model)

Brief specs of 1949 Lea-Francis 18

4-door 5-seater sedan (saloon), petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 2496 cm3 / 152.3 cu in / 152.3 cu in, 70.8 kW / 94.9 hp / 94.9 hp @ 4000 rpm / 4000 rpm / 4000 rpm, 190.0 N·m / 140.1 lb·ft / 140.1 lb·ft @ 2500 rpm / 2500 rpm / 2500 rpm, manual 4-speed transmission, rear wheel drive, 145 km/h / 90 mph / 90 mph top speed

units: metric UK US

Basic (general) data

Marque (make)Lea-FrancisIssued from1949
Model18Issued until
Serie18Number made
Model familyBody construction
Model codeBody designation
ManufacturerLea-FrancisCountryCH

Bodywork

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

Dimensions & Weight

Length4597 mm / 181.0 in / 181.0 inTotal (curb) weight1372 kg / 3025 lb / 3025 lb
Width1638 mm / 64.5 in / 64.5 inDry weight
Height1537 mm / 60.5 in / 60.5 inLoad capacity
Wheelbase2820 mm / 111.0 in / 111.0 inGross (max.) weight
Track front1334 mm / 52.5 in / 52.5 inTowing weight
Track rear1334 mm / 52.5 in / 52.5 inWeight distribution (front)
Ground clearance178 mm / 7.0 in / 7.0 inFuel capacity68 l / 15.0 UK gal / 18.0 US gal
Length/wheelbase ratio1.63  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.14 m2 / 23.0 sq ft / 23.0 sq ft (est.)
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 ManufacturerLea-FrancisValves per cylinder2
Engine constructionBore85.0 mm / 3.35 in / 3.35 in
Fuelpetrol (gasoline)Stroke110.0 mm / 4.33 in / 4.33 in
Fuel detailsBore/Stroke ratio0.77
Fuel supply1 SU carbEngine displacement2496 cm3 / 152.3 cu in / 152.3 cu in
Engine Main bearingsUnitary capacity624.00 cm3/cylinder / 38.079 cu in/cylinder / 38.079 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio7.2 : 1
SumpMax. output power70.8 kW / 94.9 hp / 94.9 hp at 4000 rpm / 4000 rpm / 4000 rpm
AspirationnaturalMax. torque190.0 N·m / 140.1 lb·ft / 140.1 lb·ft at 2500 rpm / 2500 rpm / 2500 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)28.3 kW / 38.0 hp / 38.0 hp (est.)
CoolantwaterSpecific output28.4 kW/l / 0.623 bhp/cu in / 0.623 bhp/cu in
Catalytic converternoSpecific torque76.1 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) ratio3.92

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed145 km/h / 90 mph / 90 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio69.2 kW/ton / 52.5 bhp/ton / 52.5 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 circle10.7 m / 35.1 ft / 35.1 ft
Suspension frontIndependent, Torsion barSuspension rearLive axle, Semi-elliptic leaf springs
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontdrumBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Lea-Francis 18

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