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Engine
Specs.(Tuning
Data)
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non-US market
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US market (the same as non-US if no
difference is indicated)
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Number of cylinders
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4 in line
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-
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Bore of cylinders
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2.9 in (73.7 mm)
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-
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Stroke of crankshaft
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3.44 in (87.5mm)
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-
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Capacity
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91 cubic in (1493 cc)
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-
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Compression ratio
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9.0:1
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7.5:1 (1976 - 9.0:1)
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Maximum power
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71 b.h.p. Din at 5500 rpm
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53 b.h.p. SAE net at 5000 rpm
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Maximum torque
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985 lbf/in at 3000 rpm
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830 lbf/in at 2500 rpm
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engine weight (approx.)
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220 lbs. (100kgs) stripped plus weight
of manifolds and flywheel
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Lubrication
for capacities see our
Lubrication
Specifications page
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 back
to top
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Oil pump
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High capacity rotor type
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-
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Oil filter
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Full flow type, disposable
cartridge
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-
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Oil warning light
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Extinguishes at 3 to 5 lb/in2 (0.21 to
0.35 kg/cm2) oil pressure
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Cooling
System
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to top
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Type
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'No-loss' Water system
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-
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Circulation
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impeller type pump, Vee belt driven
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Pressure
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13lb/in2 (0.91kg/cm2)
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-
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Thermostat
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Opens at 82 C (180 F) summer, 88 C (190
F) winter
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Fan
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7 blades 12 1/2 in diameter
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13 blades 12 1/2 in diameter with
viscous coupling
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Fan belt
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0.75" to 1" (19-25 mm) deflection at
mid point of longest run
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Fuel
system (also see Tuning
Data page)
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to top
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Tank (limited fill fuel tank)
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37.6 liters
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9.9 gallons
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Fuel Octane
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1970 Mk3: 100 octane
1974-80 1500: 91 octane
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Pump
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Mechanically operated diaphragm
type
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-
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Carburetter
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Twin SHUS4 side draughts
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Single Stromberg 150 CDSE side draught
[1970]
Single Stromberg 150 CD4 side draught
[1975,1979-80]
Single Stromberg 150 CD4T? side draught
[1976-1978]
California market Single Stromberg CD4T
150 auto-choke, side draught
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Air Cleaner
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Combined air cleaner and silencer with
replacement paper elements
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U.S.A. models fitted with a temperature
controlled inlet air flow
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Crankcase ventilation
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Closed circuit breathing from rocker
cover to constant depression side of
carburetters.
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Evaporative Emission control
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N/A
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U.S.A. models only, sealed tank filler
cap. Vapor emissions from tank are vented
via a separator canister to a carbon
canister located in the engine
compartment. Canister is purged by
carburetter depression. An air pump
injects air into each exhaust port via a
distribution manifold and an E.G.R. valve.
A service indicator located in the engine
bay illuminates a warning light on the
facia when the E.G.R. valve is due for
periodical maintenance.
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Clutch
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to top
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Make/type
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Borg and beck, single dry plate,
diaphragm spring type
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Release mechanism
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Hydraulically operated
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-
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Plate diameter
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6.5" to 1500, 7.25" after
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-
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Facing material
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Borg and Beck 11046 H.K. Porter
11046
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Gearbox
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to top
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Synchromesh
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On forward gears
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-
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O/D 4th
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4th
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O/D 3rd
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3rd
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2nd
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1st
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Rev.
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Gear Ratios
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-
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1.00
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-
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1.39
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2.16
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3.50 or 3.99 (Mk3)
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3.99
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Overall: USA
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3.10
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3.89
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4.31
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5.42
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8.40
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13.62
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15.51
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Overall: non USA
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2.89
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3.63
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4.03
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5.05
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7.85
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10.70
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14.48
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Overdrive (Optional)
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-
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-
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Make/type
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Laycock J-Type
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-
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Operative on
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4th and 3rd gears
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-
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Overall ratio
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0.797:1
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-
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Final
Drive (also see final
drive page)
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to top
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Type
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Hypoid bevel gears in rear axle
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-
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Ratio
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3.63:1
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3.89:1
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Effective Gearing (Approximate values
depending on type and condition of
tires)
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O/D 4th
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4th
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O/D 3rd
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3rd
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2nd
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1st
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Engine speeds (rev/min) at
road speed of 10 mph-U.S.A.
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474
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595
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660
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827
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1282
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2084
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Non U.S.A.
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442
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555
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616
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772
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1200
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1942
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Road speed Data (Approximate values
depending on type and condition of
tires)
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Road speed at 1,000 re/min engine speed
O/D 4th gear
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22.6 mph
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21.2 mph
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4th gear
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16.7 mph
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18.0 mph
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Steering
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back
to top
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Make/Type
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Alford & Alder, rack and pinion
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-
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Turning circle
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Spitfire 1500: 24 feet (7.3 metres)
GT6: 25 feet 3'
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-
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Steering wheel diameter
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14.5 in (368mm)
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-
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Steering wheel nut
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1 1/16"
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-
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Turns lock to lock
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3 3/4
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-
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Brake
System
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back
to top
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Foot pedal
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Hydraulic on all four wheels
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Tandem master cylinder operating front
and rear brakes independently
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Hand brake
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Mechanical on rear wheels only
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-
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Type
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Caliper disc front, Drums rear
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-
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Disc diameter
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9 in (229mm)
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-
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Disk Lining area
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14.8 in2 (95cm2)
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-
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Disk Swept area
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150.0 in2 (967 cm2)
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-
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Wheels
And Tires for more info see our
Wheels/Tires
page
|
back
to top
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Wheels
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3.5 x 13 Steel disk (Mk1-early Mk3)
4 1/2 x 13 Steel disc type (Mk3 up)
5 x 13 (1980)
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-
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Tires
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155SR x 13 in radial ply
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-
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Tire pressures-front
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21 lb/in2 (1.476 kg/cm2) (18 for
Mk1-3)
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-
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Tire pressures- rear
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26lb/in2 (1.828 kg/cm2) (24 for
Mk1-3)
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-
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wheel lug bolt studs
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3/8"
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-
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Chassis
Data
|
back
to top
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Wheelbase
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83 in (2110 mm)
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-
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Track (2 up condition): front
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49 in (1244 mm)
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-
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Track (2 up condition): rear
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Spitfire Mk1-4/GT6 Mk1: 48 in
GT6 Mk2-3: 49 in
Spitfire 1500: 50 in (1270 mm)
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-
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Wheel alignment (2 up condition)
front
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0 to 1/16 in toe in (0 to 1.5875
mm)
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For more info about alignments, visit
the alignment
page
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rear
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0 to 1/16 in toe in (0 to 1.5875
mm)
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-
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Ground clearance (2 up condition)
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GT6: 4 in (102 mm)
Spit: 5 in (127 mm)
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-
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Camber (2 up condition) front
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2 degrees positive ±1/2
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-
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rear
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3 1/4 degrees negative ± 1
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-
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Caster (2 up condition)
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4 1/2 ± 1/2
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-
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King Pin inclination (2 up
condition)
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6 3/4 ± 3/4
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-
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Electrical
Equipment
|
back
to top
|
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Electrical System
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12 volt negative earth
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-
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Battery capacity
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40 amp hour at 20 hour rate
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-
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Alternator type
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Mk3: Lucas C40-1 limited by v.r. to 22
amp max.
1500: Lucas 16 ACR output 34 amps
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-
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Starter motor
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M.35 J inertia type
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-
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Overall
Dimensions
|
back
to top
|
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Length
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149 in (3785 mm)
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155.25 in (3943 mm), 1976-1980: 156.3
in (3970)
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Width
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58.5 in (1488 mm)
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-
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Height (unladen) to top of
windscreen
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44.25 in (1125 mm)
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43.7 in (1110 mm)
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Soft top hood erect
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45.8 in (1162 mm)
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45.6 in (1159 mm)
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Hard top
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45.2 in (1148 mm)
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45.4 in (1153 mm)
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Weights
(approx)
|
back
to top
|
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Dry (excluding extra equipment)
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763 kg
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804 kg, 1976-80: 1761 lb (799 kg)
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Basic Kerb (including water, oil, fuel
and tools)
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792 kg
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829 kg, 1976-80: 1814 lb (823 kg)
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Kerb (including optional extras, water,
oil, etc.)
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841 kg
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876 kg, 1976-80: 1900 lb (862 kg)
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Maximum gross vehicle weight
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1036 kg
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1061 kg, 1976-80: 2339 lb (1061 kg)
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Hardtop weight
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58 lbs.
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Towing
Information
|
back
to top
|
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Maximum recommended trailer weight
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610 kg-when trailer being towed is
equipped with brakes
200 kg-when trailer being towed is not
equipped with brakes, providing that the
total car and trailer laden weights do not
exceed 1112 kg
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Maximum starting gradient (fully laden
car and trailer)
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5.5 degrees (with car engine in peak
condition)
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Maximum climbable gradient (fully laden
car and trailer)
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4.3 degrees (with car engine in peak
condition)
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Return
to Reference Page