1957 Siata 1250 GT

This vehicle has a coupé type body with a front positioned engine powering the rear wheels. The power is produced by a naturally aspirated engine of 1.2 litre capacity. This powerplant features overhead valve valve gear, 4 cylinder layout, and 2 valves per cylinder. It develops 66 bhp (67 PS/49 kW) of power at 5500 rpm, and maximum torque of 88 N·m (65 lb·ft/9 kgm) at 4000 rpm. The engine transfers its power through to the wheels via a 4 speed manual transmission. Quoted kerb weight is 830 kg. Maximum claimed speed is 151 km/h, which equates to 94 mph.
Full specs

Body type
fixed-head coupé with 2+2 seats
Length
4007 mm
Weight
830 kg
Engine type
naturally aspirated petrol
Engine size
1.2 litre
Cylinders
4, Straight
Power
67 PS / 66 bhp / 49 kW @ 5500 rpm
Torque
88 Nm / 65 ft.lb / 9 kgm @ 4000 rpm
Top speed
151 km/h / 94 mph

1957 Siata 1250 GT specifications

1957 Siata 1250 GT data
bodywork
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Body type	2+2 seater fixed-head coupé
Number of doors
Designer
dimensions & weights
Wheelbase	2343 mm	92.2 inches
Track/tread (front)	1232 mm	48.5 inches
Track/tread (rear)	1207 mm	47.5 inches
Length	4007 mm	157.8 inches
Width	1511 mm	59.5 inches
Height	1334 mm	52.5 inches
Ground clearance
length:wheelbase ratio	1.71
Kerb weight	830 kg	1830 lb
Weight distribution
fuel tank capacity	39.8 litres	8.8 [10.5] UK [US] gal.
aerodynamics
Drag coefficient
Frontal area
CdA
Powertrain
engine type	naturally aspirated petrol
Engine manufacturer
Engine code
Cylinders	Straight 4
Capacity	1.2 litre 1247 cc (76.097 cu in)
Bore × Stroke	70 × 81 mm 2.76 × 3.19 in
Bore/stroke ratio	0.86
Valve gear	overhead valve (OHV) 2 valves per cylinder 8 valves in total
maximum power output (Net)	67 PS (66 bhp) (49 kW) at 5500 rpm
maximum torque (Net)	88 Nm (65 ft·lb) (9 kgm) at 4000 rpm
Specific output (Net)	39.5 kW/litre 53.7 ps/litre 52.9 bhp/litre 0.87 bhp/cu in
Specific torque (Net)	70.57 Nm/litre 0.85 ft·lb/cu³
Engine construction
Lubrication
compression ratio	8:1
Fuel system	1 We carb
bmep (brake mean effective pressure)	886.8 kPa (128.6 psi)
Maximum RPM
crankshaft bearings
Engine coolant	Water
Unitary capacity	311.75 cc
Aspiration	Normal
Compressor	N/A
Intercooler	None
Catalytic converter	N
performance
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile
Standing kilometre
Maximum speed	151 km/h (94 mph)
Power-to-weight ratio	Higher is better 80.62 PS/tonne (1000 kg) 0.08 PS/kg 59.3 kW/tonne (1000 kg) 0.06 kW/kg 79.52 bhp/tonne (1000 kg) 0.08 bhp/kg 0.04 bhp/lb
Weight-to-power ratio	Lower is better 16.86 kg/kW 28.17 lb/bhp
fuel consumption
Fuel consumption
universal fuel consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
Carbon dioxide emissions
Carbon dioxide emissions
Carfolio Calculated CO₂ ^?
VED band (UK)
CO₂ Effizienz (DE)
chassis
Engine position	front
Engine layout	longitudinal
Drive wheels	rear wheel drive
Torque split	N/A
Steering
turns lock-to-lock
Turning circle	10.50 m
Front suspension	I.CS.
Rear suspension	LA.SE.
Wheel size front
Wheel size rear
Tyres front
Tyres rear
Brakes F/R	Dr/Dr
Front brake diameter
Rear brake diameter
Braked area
Gearbox	4 speed manual
Top gear ratio	1
Final drive ratio	4.10
general
Carfolio.com ID	43835
Production total
Model code
RAC rating	12.2
Insurance classification	No information available
Tax band	No information available
1957 Siata 1250 GT added before December 1995. Last modified 2013-02-28.