Review: Porsche 968 Cabriolet (1992-94)

Overview

Released in February 1992, the Porsche 968 Cabriolet was a two-seat convertible with a soft-top roof. Manufactured in Stuttgart, Germany, the rear-wheel drive 968 Cabriolet was powered by a 3.0-litre inline four-cylinder petrol engine that was mated to either a six-speed manual or four-speed automatic transmission with sequential shift function (Porsche’s ‘Tiptronic’). For a 50:50 weight distribution, the transmission was fitted ahead of the rear axle (i.e. transaxle configuration).

Development of the 968 and 968 Cabriolet commenced shortly after the release of the 944 S2 in 1989. Since around 80 per cent of the 944’s mechanical components were either significantly modified or replaced, Porsche decided to introduce the ‘968’ name for the vehicle. 

Engine

The 3.0-litre four-cylinder engine had an aluminium alloy block and cylinder heads, double overhead cams, four valves per cylinder, variable intake valve timing (Porsche’s ‘VarioCam’) and a compression ratio of 11.0:1. With VarioCam,

• Below 1500 rpm, intake camshaft timing was advanced for lower emissions;
• Beyond 1500 rpm, however, camshaft timing was retarded for greater torque which peaked at 4100 rpm; and,
• Above 5500 rpm, timing was advanced again for greater efficiency.

Upon its release, Porsche claimed that the engine was the first naturally aspirated engine to produce 75 lb-ft of torque (101.7 Nm) per litre. 

Dimensions and styling

Styled by Harm Lagaay, the 968 Cabriolet was 4320 mm long, 1735 mm wide, 1275 mm tall and had a 2400 mm long wheelbase. Compared to the 944, the 968 could be identified by its pop-up headlights (providing a familial link to the 928 ), 16-inch five-spoke ‘Cup’ style alloy wheels and rounded single-lens tail lights.

Suspension

The 968 Cabriolet had MacPherson strut front suspension with aluminium alloy lower control arms and independent rear suspension with semi-trailing arms and transverse torsion bars.

Safety equipment

Standard safety equipment for the 968 Cabriolet initially consisted of ABS, with a driver’s airbag fitted from 1993.

Brakes

The 968 Cabriolet had 298 mm by 28 mm front and 299 mm by 24 mm rear internally vented brake discs with four-piston Brembo calipers front and rear.

Features

Standard features for the Porsche 968 Cabriolet included 16-inch ‘Cup’ style alloy wheels with 205/55 ZR 7J x 16 front and 225/50 ZR 8J x 16 rear tyres, a six speaker sound system with a radio and cassette player, climate control air conditioning, power adjustable front seats, front fog lights, central locking, power windows, power mirrors and an alarm.

Related links

• Wikipedia.org: Porsche 968