911 GT2 RS

Ut­terly berserk rear-drive turbo 911 not for the in­ex­pe­ri­enced

Motor (Australia) - - FEATURE : TOP FIVE 911S -

PORSCHE TOOK a 911 Turbo, fit­ted a pair of larger vari­able-ge­om­e­try tur­bocharg­ers and upped the boost to 1.55 bar (22psi) to cre­ate a 3.8-litre flat-six en­gine with a 515kW out­put. But then, in an ap­par­ently stark-rav­ing-mad move – but one true to the DNA of this beastly ma­chine – the en­gi­neers took out the front drive­shafts so that the task of trans­mit­ting all that power fell only to the rear tyres. Pre­sum­ably they then cocked their heads back and laughed ma­ni­a­cally.

They called their cre­ation the 991.2 GT2 RS, not just the fastest pro­duc­tion 911 in history around the famed Nur­bur­gring Nord­schleife (with a lap time of 6:47.3), but also the fastest-lap­ping road-go­ing Porsche road car ever around that cir­cuit, quicker than even the 652kW 918 Spy­der hy­per­car (6:57).

The 991.2 GT2 RS is the lat­est in a 911 dy­nasty that has earned a fright­en­ing rep­u­ta­tion as “the widow maker” for com­bin­ing truly enor­mous amounts of tur­bocharged power with rear-wheel drive. The first GT2, not an RS, ar­rived with the 993 in 1995, built as a ho­molo­ga­tion car for the GT2 cat­e­gory of mo­tor­sport. Just 57 were made, seven in right-hand drive, and these days com­mand an awe­some pre­mium to own.

Two more GT2 it­er­a­tions fol­lowed – 996 in 2000 and 997 in 2007 – un­til Porsche cooked up the first RS, in 997.2 guise, in 2010. With 456kW and 700Nm trans­mit­ted through two tor­tured rear tyres – this is an an­i­mal that would bite up to the el­bow – the 997.2 GT2 RS stormed to 100km/h in 3.5 sec­onds on to a 330km/h top speed. All with a man­ual trans­mis­sion.

For the 991.2 you see here, the lat­est in this line of wicked 911s, Porsche de­cided a man­ual trans­mis­sion was too cuckoo and fit­ted the light­ning-fast Porsche Dop­pelkup­plung (PDK) twin-clutch trans­mis­sion in­stead. Ba­si­cally out of the 918, the beefed-up auto helps the lat­est GT2 RS hit 100km/h in 2.8 sec­onds, 200km/h in 8.3 sec­onds on to a top speed of 340km/h. Sub-10 sec­ond quar­ters? We’ve heard of this car do­ing them.

That’s thanks to launch con­trol and fat, 325mm-wide gum­ball rear tyres (ei­ther Dun­lop Sport Maxx Race 2s or Miche­lin Pilot Sport Cup 2s) and putting physics to work, the ex­ag­ger­ated

squat of a rear-en­gine 911 pum­melling the rear tyres into the bi­tu­men the harder you ac­cel­er­ate. Ac­cord­ing to leg­end, all­wheel drive was briefly con­sid­ered early in de­vel­op­ment, but quickly dis­missed, the in­her­ently strong rear-en­gine trac­tion con­sid­ered suf­fi­cient.

Back be­hind those rear wheels, it wasn’t just big­ger tur­bos and more boost Porsche used to get that epic power fig­ure, but also lower com­pres­sion pis­tons (by 0.5) per­mit­ting the GT2 RS to rev to 7200rpm. There’s also a re­shaped car­bon fi­bre air in­let, im­proved fil­ter and freer-flow­ing ul­tra-light­weight ti­ta­nium ex­haust. A wa­ter-to-air in­ter­cooler set-up is com­plete with noz­zles that spray the ra­di­a­tors to re­duce charge tem­per­a­tures by a fur­ther 20 de­grees, sup­pos­edly a bit of a se­cret weapon for achiev­ing that Nur­bur­gring lap time.

Ob­vi­ously the rest of the car has re­ceived the GT Divi­son treat­ment. Ev­ery sus­pen­sion joint is solid mounted. There's rear-steer­ing that sub­tly steers against the front wheels at low speeds for spooky agility; or with the front wheels at high speeds for a long-wheel­base-like sta­bil­ity. There are helper-springs on the front MacPher­son struts and also at the rear, a sig­na­ture Porsche GT-car up­grade. Sus­pen­sion height and cam­ber is ad­justable, as are the anti-roll bars.

Plainly, this is a car that ad­ver­tises its in­tent in the way it looks. The huge front bar open­ings are re­quired to meet the equally huge cool­ing re­quire­ments. Bon­net NACA ducts send cool air to the front brakes. Grab the op­tional Weis­sach Pack­age and you’ve got your­self the most ex­treme and fo­cused 911 ever. Car­bon fi­bre is ev­ery­where, in­clud­ing sus­pen­sion com­po­nents, and forged 20/21-inch mag­ne­sium wheels from the 918 con­trib­ute to a 30kg weight sav­ing. All a bit stark rav­ing mad? Wel­come to the GT2 RS.

TOP LEFT Enor­mous car­bon fi­bre rear wing con­trib­utes to a max­i­mum of 450kg down­force at 340km/h OP­PO­SITE TOP GT2 RS pro­duc­tion could ex­ceed 1000; Porsche Oz would only say that its lo­cal al­lo­ca­tion is “in dou­ble dig­its”

02

ABOVE GT2 RS comes with mon­ster car­bon-ce­ramic discs stan­dard, 410mm six-pis­ton front and 390mm four-pis­ton SUB 10-SEC­OND QUAR­TERS? WE'VE HEARD OF THIS CAR DO­ING THEM

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