Porsche Cayman 981 GT4 Street version (2015-2016)

Official photos: 2015 February 4
Premiere: 2015 March 3, Geneva Motor Show
Market launch: 2015 March

 © Porsche

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-
schleife
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
DIN weight = car with 90% fuel, no driver, no cargo. Weight of German versions with standard equipment.

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.

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The concept, the front spoiler look and the side air scoops remind a bit of the Lotus Exige© Porsche
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Christian Gebhardt lapped the Nürburgring Nordschleife in 7:42,39 (Sport Auto 5/2015, Supertest)© Porsche
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Porsche Cayman 981 GT4 side air inlet scoop
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The forged wheels are 20", the fronts are 8.5" wide with 245/35 tyres and the rears are 11" with 295/30© Porsche
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Porsche calls it a 'diffusor-look' rear under valance, so it is not an aerodynamic item© Porsche
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Who could resist getting into such a car and out to the race track...© Porsche
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Porsche Cayman 981 GT4 rear spoiler
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Porsche Cayman 981 GT4 wheel and brake
The wheel design mimics that of the 991 GT3, but has conventional easy-to-live-with 5-bolt arrangement instead of the central locking system© Porsche
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Michelin Pilot Sport 2 road legal racing tyres© Porsche
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The Sport-button activates automatic throttle-blipping for downshifts © Porsche
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Porsche Cayman 981 GT4 cockpit, bucket seats
The bucket seats must be specified first and then the Club Sport roll cage can be ordered© Porsche
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Bucket seats and Club Sport package (roll cage, 6-point harness, fire extinguisher and preparation for battery disconnection switch)© Porsche
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Optional adaptive sports seat, standard sports seat and optional bucket seat© Porsche
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Porsche Track Precision App saves the video and telemetrics © Porsche
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Porsche Cayman GT4 3.8-litre engine
283 kW 3.8-litre 6-cylinder boxer of the 997.2 Carrera S used in the Cayman GT4. The same engine was also used in 991 Carrera S (294 kW).© Porsche
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Andreas Preuninger, head of GT cars at Porsche, interviewed by EVO
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Cayman 981 GT4 wrapped for delivery
Wrapped for transport © Porsche

Article © James Herne / Stuttcars.com


PDF

Cayman GT4

2/2015 · German

Cayman GT4 3.8

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Coloring pages

Cayman (981) GT4 (Street version)

2015

  • Vector drawing 594 mm x 420 mm (A2), B/W
  • Format: PDF
  • Author: Margus Holland

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More coloring pages

Continue to GT4 Racing version or to 991 GT3

Anniversaries
Sep, 23 – 16th birthday of the Boxster 987 (2004)
Sep, 25 – 18th birthday of the Cayenne (2002)
Sep, 28 – 32nd birthday of the 964 (1988)
Oct, 11 – 33rd birthday of the 2708 (1987)
Oct, 29 – 80th birthday of Hans-Peter Porsche (1940)