Engine:
Type: 61501.
Location:front longitudinal mounting.
Number of cylinders and arrangement: 6 60 V. light alloy block and heads, capacity: 2959 cm3.
Bore x Stroke: 93 x 72.60 mm.
Compression Ratio 10:1
Max. Power: 207 HP or 154 kw ( EEC standards ) at 6200 rpm.
Max. Torque: 25 kgm. ( EEC standards ) at 4500 rpm.
Valve arrangement: V-type overhead. 1 overhead camshaft per bank with rocker-arms, toothed belt.
Top speed: 250 km/h.
Acceleration: from 0 to 100 km/h in 7 seconds.
Ignition system: digital ignition.
Cooling system: pressurized liquid cooling with thermostatic electric fan ( capacity: 10 liters).
Fuel system: electric pump with shutoff device in case of collision, combined ignition and fuel injection system ( multipoint ) Bosh ML4.1 - Motronic. 3-way catalyst ( US '83 standards ).
Fuel tank: internal, behind the rear seat ( capacity 68 litres ).
Transmission
Rear wheel drive.
Clutch: dry single plate.
Gearbox: mechanical rear transaxle 5 speeds forward plus reverse,( I, 1:2,87 / II, 1:1,72 / III, 1:1,22 / IV, 1:094 / V, 1:078 / R, 1:3,0 ) floor mounted gear lever.
Final drive: hypoid bevel gear ( ratio 11/43 ).
Suspension
Front: independent wheels, transverse arms and oblique beam, coil spring, anti-roll bar.
Rear: rigid axle, de Dion scheme, oblique arm. Watt linkage, coil spring, anti-roll bar.
Shock absorbers: hydrolic telescopic type ( with ground clearance manual control )
Wheels
Light-alloy rims.
Tyres: P-Zero, front 205/55 ZR 16, rear 225/50 ZR 16.
Brakes
Foot: hydraulic circuit, front and rear vented discs, power-assisted braking. Handbrake: mechanical on the rear wheels.
Steering
Rack and pinion, servo, turning circle: 11 m.
Electric system
12 V; 70 Amp. alternator, 70 Ah. battery.
Structure
Bodypanels formed from Modar thermosetting metacrylic resin and glassfibre, bonded to the body-shell structure. The suspension was attached to the body-shell via Uniball ball joints
Dimensions
Wheelbase: 2.510 m. Track: front 1.464 m. rear: 1,426. Length: 4.060 m. Width: 1.730 m. Height: 1.300 m.
Weight
Unladen: 1260 kg.
Only 1036 build of the SZ and 278 of the RZ, odly most registered SZ are in Great Britain (61) and the Netherlands (41)