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Lea-Francis 2½-Litre

(1949 model)

Brief specs of 1949 Lea-Francis 2½-Litre

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 2496 cm3 / 152.3 cu in / 152.3 cu in, 93.2 kW / 125.0 hp / 125.0 hp @ 5000 rpm / 5000 rpm / 5000 rpm, 193.0 N·m / 142.3 lb·ft / 142.3 lb·ft @ 2500 rpm / 2500 rpm / 2500 rpm, manual 4-speed transmission, rear wheel drive, 161 km/h / 100 mph / 100 mph top speed

units: metric UK US

Basic (general) data

Marque (make)Lea-FrancisIssued from1949
Model2½-LitreIssued until
Serie2.5-LitreNumber made
Model familyBody construction
Model codeBody designation
ManufacturerLea-FrancisCountryCH

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

Length4191 mm / 165.0 in / 165.0 inTotal (curb) weight1170 kg / 2579 lb / 2579 lb
Width1600 mm / 63.0 in / 63.0 inDry weight
Height1372 mm / 54.0 in / 54.0 inLoad capacity
Wheelbase2515 mm / 99.0 in / 99.0 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 ratio1.67  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.87 m2 / 20.1 sq ft / 20.1 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 supply2 SU carbsEngine 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 ratio8.7 : 1
SumpMax. output power93.2 kW / 125.0 hp / 125.0 hp at 5000 rpm / 5000 rpm / 5000 rpm
AspirationnaturalMax. torque193.0 N·m / 142.3 lb·ft / 142.3 lb·ft at 2500 rpm / 2500 rpm / 2500 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)37.3 kW / 50.0 hp / 50.0 hp (est.)
CoolantwaterSpecific output37.3 kW/l / 0.821 bhp/cu in / 0.821 bhp/cu in
Catalytic converternoSpecific torque77.3 N·m/l / 0.68 lb·ft/cu in / 0.68 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio3.64

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed161 km/h / 100 mph / 100 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio106.8 kW/ton / 80.9 bhp/ton / 80.9 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 circle9.8 m / 32.2 ft / 32.2 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 2½-Litre

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