Porsche Cayman 981 GT4 Street version (2015-2016)
Official photos: 2015 February 4
Premiere: 2015 March 3, Geneva Motor Show
Market launch: 2015 March
Technical specification and comparison
|Modification||Engine||kW||lb-ft||Nm||Gearbox||60 mph||100 km/h||160 km/h||200 km/h||mph||km/h||DIN kg||DIN lb||W/lb||W/kg||Nord-
|Cayman 981 GT4||3.8B6||283||309||420||manual 6-speed||4.2 sec.||4.4 sec.||9.3 sec.||14.5 sec.||183||295||1340||2954||96||211||7:42|
|911 991 GT3||3.8B6||350||324||440||PDK 7-speed||3.3 sec.||3.5 sec.||7.5 sec.||11.4 sec.||196||315||1430||3153||111||245||7:30|
The GT4 was basically a Cayman with the chassis from the 991 GT3 and the engine from the 997.2/991 Carrera S. The GT4 was 38% cheaper than the GT3. To fit into the Cayman, the 911 engine had to be modified a bit, so it got different crankcase and naturally different intake system. The GT3 chassis made the GT4 1.2"/30 mm lower than standard Cayman. The brakes were also directly from the 991 GT3, with 380 mm discs front and rear. The GT4 was equipped with the best road legal racing tyres, the Michelin Pilot Sport Cup 2. Like with the GT3 (or any other racing car), the interior was available only in black in order to not to distract driver's vision away from the road.
The standard equipment of the GT4 included:
- Adjustable racing suspension (toe, camber, stabilizers)
- LSD Limited Slip Differential with asymmetrical locking (27% in acceleration, 22% in decelaration)
- PTV Porsche Torque Vectoring (brakes the rear inner wheel for quicker cornering)
- PASM Porsche Active Suspension Management
- PADM Porsche Active Drivetrain Mounts
- Sports exhaust system
- Variable ratio electric power steering
- TPM Tyre Pressure Monitoring
- 20" wheels painted in Platinum (optionally in Silver or Black)
- On request: deletion of air conditioner (or optionally a 2-zone automatic AC)
- On request: deletion of audio system (4 speakers, CD-radio with 7" touchscreen, universal audio interface in glove compartment)
To shave a bit from the officially announced DIN curb weight (measured with 90% fuel), the standard fuel tank had only 54 litre capacity. In reality most of the cars were equipped with the no-cost 64 litre tank, which wasn't very large either.
From the optional equipment list the following could be needed: adaptive sports seats or bucket seats, Club Sport package (roll cage behind the seats, a 6-point racing harness in red for driver's side, a bigger fire extinguisher with mounting bracket and preparation for battery master switch). The optional equipment list continued with 6-point harness for the passenger, cruise control, stitching in red or yellow, 9 speaker sound system (heavy Bose system naturally not available for a track day car), navigation. The stop-watch in the Sport Chrono package still was useless as it was still unable to use car's own GPS signal. Much better (GPS-based) systems were available for lap timing. For example, from the App Store you could download the free Porsche Track Precision app for your smartphone. In addition to lap timing, the app communicated with the car for telemetrics (Sport Chrono package needed). The front part of the roll cage, the structural cross behind the seats, the battery master switch and the track day lap trigger could be purchased from Porsche Motorsport.
The fact that the automatic PDK gearbox was not available, made clear for whom this car was destined - to the Porsche drivers who enjoy the engagement in really mastering a car. The GT4 was able to lap the Nürburgring Nordschleife in 7:42.39.
Article © James Herne / Stuttcars.com
2/2015 · German
Cayman GT4 3.8
Cayman (981) GT4 (Street version)
- Vector drawing 594 mm x 420 mm (A2), B/W
- Format: PDF
- Author: Margus Holland