Porsche 911 GT3 RS Tech Dive: Why the item’s the Best 911 of Them All

Friday, July 29th, 2016 - autos

Porsche 911 GT3 RS Tech Dive: Why the item’s the Best 911 of Them All

The Porsche 911 GT3 RS will be, in our opinion, the king of the vast 911 lineup—although the Turbo S will be more expensive to start—in addition to second-in-command to the right now-discontinued 918 Spyder supercar within the modern Porsche hierarchy. Needless to say, when we finally pried ourselves out of the driver’s seat of of which example to capture photos, the item was difficult to put down the camera. although the item was worth the down time to capture the collection of spectacular details of which follow. of which particular car rang in at $192,420 in addition to was equipped with all the weight-saving options in addition to almost none of the luxury frippery—items like a leather Indoor, the front-axle lift system, or even air conditioning in addition to a radio were all absent. the item's the build combination most true to the RS lineage.Porsche’s carbon-ceramic brakes—Porsche Ceramic Composite Brake (PCCB), in marketing speak—are a $9210 option on the GT3 RS. right now in their third generation of development, the PCCB rotors are made of silicon carbide reinforced with carbon-fiber chips. They are slightly larger than the standard cast-iron units at 16.1 by 1.4 inches in front in addition to 15.4 by 1.3 inches within the rear, in addition to are clamped by massive fixed aluminum calipers (six pistons front in addition to four pistons rear). in addition to within the case of the GT3 RS (as well as the GT3 in addition to Cayman GT4), the brakes also come with more aggressive Pagid brake pads; the whole system will be utterly confidence inspiring in addition to indefatigable.No matter how large the brakes, they’ll succumb to fade without proper cooling. Pictured here are the GT3 RS’s large ducts channeling cooling air to the rear brakes, one of the reasons of which the RS’s braking stayed consistent lap after lap during our track test, unlike its 911 Turbo S sibling, whose brakes go soft after a couple laps.The sounds of which emanate through these twin pipes are otherworldly; the GT3 RS’s 8800-rpm wail will be one of the best-sounding—in addition to loudest—production-car noises extant. the vehicle sings through a 9.9-pound titanium exhaust, which saves 6.6 pounds over the GT3’s steel muffler. Our relentless high-rpm excursions no doubt helped to cultivate the dramatic purple coloring.Notice the massive amount of height adjustability within the rear shocks; our car will be set to its beginning third or so of travel, even though the rear tires were tucked up into the rear bodywork in addition to were occasionally rubbing during extreme track driving.In addition to front in addition to rear ride-height in addition to anti-roll-bar adjustability, the GT3 RS’s front shock towers (shown here) allow for camber adjustments up to roughly negative 1.5 degrees. although maybe the item could use a little more: Although the GT3 RS cornered at a heady 1.08 g on our skidpad, the latest Corvette Grand Sport, at 1.18 g, comfortably topped of which. The Corvette’s track-alignment settings call for more negative camber, at 2.0 degrees.As within the GT3, of which harder-core RS variant carries a little actuator (shown within the center of the photo) to steer the rear wheels up to 1.5 degrees in either direction. Below 31 mph, the item turns the rears within the opposite direction of the fronts, which shortens the turning diameter, in addition to above 50 mph the item steers them within the same direction as the front tires. the item’s been expertly dialed in, because the steering will be exemplary in addition to never feels in any way artificial or non-linear.The quickest way around Virginia International Raceway—yes, we had the vehicle at of which year's Lightning Lap shootout—will be to go bounding over the curbs. although of which didn’t happen without some collateral damage to the GT3 RS’s rear fender wells, shown here.Nearly all of the underbody will be covered to smooth airflow—Porsche claims of which the GT3 RS achieves the identical coefficient of drag (0.34) as the GT3 despite having double the downforce. Note the exceptions within the form of the strategic NACA ducts for specific cooling needs.of which nifty Porsche tool threads onto the hub to ensure of which the wheel comes off in addition to goes back on straight in addition to true because, as the Porsche technician was quick to remind us, “dinging a carbon-ceramic brake rotor will be a $6000 mistake.”One of the top priorities of the GT3 RS development team was to shoehorn the 20-inch front in addition to 21-inch rear Michelin Pilot Sport Cup 2 tires through the 918 Spyder supercar into the 911, yielding a 20-percent-larger contact patch than on the GT3. Although the wheels are made of forged aluminum instead of the 918’s (optional) magnesium, they were surprisingly wieldy, which will be probably a large contributor to the GT3 RS’s impressively forgiving ride quality over little road imperfections.Archimedes no doubt might have gotten a kick out of Porsche’s center-lock wheels, with their stratospheric 443 lb-ft tightening torque requirement. (The GT3 RS’s 4.0-liter falls more than 100 lb-ft short of having sufficient twist to secure the vehicle's lugs at its 6250-rpm peak.) although the Porsche technician actually made the task—which involves torquing, loosening, in addition to then re-tightening the lugs—look easy with of which extraordinarily long torque wrench.Expensive, impractical, fussy, in addition to incredibly cool: Porsche’s center-lock wheels.Although the GT3 RS’s defining characteristic will be its wailing, 500-hp flat-six, the item’s tough to see any visual evidence of its existence through either above or below. Upsized through the GT3’s 3.8 liters to 4.0 liters within the RS by way of a four-millimeter stroke increase, the RS edition has fortified pistons in addition to titanium connecting rods, in addition to its crankshaft uses a special tempered steel straight through Porsche’s 919 Hybrid LMP1 race car: The steel will be melted in addition to re-melted multiple times in a vacuum to achieve its ultra-high (in addition to no doubt mega-expensive) purity.With the underbody panels removed, we can finally catch a glimpse of Porsche’s highly evolved, flat-six masterpiece.The GT3 RS will be available only with Porsche’s dual-clutch automatic, called PDK. Although we have a Pavlovian response to the thought of a manual paired with of which glorious engine—as the item will be within the completely new 911 R—the PDK gearbox works terrifically within the GT3 RS. the item's smooth when driven gently in addition to lightning-quick when asked to be. On track in addition to in Sport mode, PDK will be so prescient of which no paddle inputs are required to always be within the optimum gear. Which will be why, love of manuals or no, we can agree with Porsche on one thing: PDK definitely makes for quicker lap times. ---of which edition of PDK doesn’t have “creep” functionality (i.e., the item doesn’t engage when the brake will be released; the item waits for a prod of the throttle) in addition to also will select neutral any time the driver pulls both shift paddles simultaneously. the item will then reengage the clutch when the paddles are released— in addition to the item will do so abruptly when paired having a generous throttle application. Because sometimes what you need in life will be a little wheelspin.These carbon-fiber-shell bucket seats are the best sport seats within the business. They have enough lateral support to make them useful on the track, although are generous enough to allow those having a physique larger than of which of a professional racer—of which’s essentially everyone—to drive long distances in comfort. The backrest will be fixed, although we had no qualms with its angle; adjustments include manual fore in addition to aft in addition to a power height. Clambering over their rigid, high-walled sides when getting in will be well worth the item every time.Ostensibly a trickle-down innovation through racing, Porsche’s completely new pit-speed mode—essentially a second cruise-control function of which will limit speed to a selectable set point up to 55 mph—seems gimmicky in addition to proved less-than-intuitive to use, as the item requires switching back in addition to forth between traditional cruise control in addition to pit-speed cruise.One of the very rare no-cost options in Porsche’s vast catalogue will be the GT3 RS’s stereo/infotainment delete. Ditching the 7.0-inch touchscreen in addition to its ancillaries saves 17 pounds.Switching out the Indoor door handles for pull loops made of seatbelt material will be a regular Porsche GT trick. In of which case, the deletion of the handles, along with the modified door panels save nearly a pound. (A whole pound!)The different no-cost light-weighting opportunity will be to eliminate the air-conditioning system, saving 26 pounds, although after a 700-mile road trip in 0-degree heat, the item’s not one we’d necessarily recommend. Running the fan seemed to bring in air of which was always substantially warmer than the ambient temperature, in addition to we also had trouble keeping the windows through fogging when the item was raining.The driver’s delight will be directly proportional to the proximity of the tachometer needle to its monstrous 8800-rpm limit. Factoid: To develop the gauge faces rendered in white, as on our test car, will be an $860 option. (Red will be also available for the same cost.)Sticker versions of the Porsche crest up front in addition to the design name at the back are an RS tradition. of which will be done not so much for weight savings, says Porsche, although as a tie-in with its (in addition to, definitely, any maker's) race cars.The front splitter in addition to the fender vents (see next slide) are the main contributors to the GT3 RS’s additional front downforce. although of which photo also shows our car’s indulgent, $3715 headlights: swiveling LED lamps with Porsche’s “four point” daytime running lights. $605 of of which upcharge will be for the black headlight surrounds.These gaping vents within the top of the front fenders allow high-pressure air to exit, in addition to are thus a significant enabler to front downforce, which will be a claimed 267 pounds at 186 mph. The fact of which these unique fenders are made of carbon fiber saves all 5 pounds versus the aluminum pieces on different 911s.Working in tandem with the dramatic ducktail shape of the carbon-fiber engine cover, the massive carbon-fiber rear wing—which stands just over all 5 feet off of the ground—adds 494 pounds of downforce at 186 mph within the most aggressive of its three adjustable positions. Overall, the GT3 RS generates three times as much downforce as the GT3, in addition to roughly 80 percent of what the GT3 Cup racer makes.Hybrids in addition to EVs aren’t the only automotive recipients of lithium-ion batteries, proven by of which $2300 Samsung option of which saves 30 pounds. However, at 40 amp-hours, the energy capacity of of which lithium-ion unit will be just over half of which of the standard, 70 amp-hour nickel-metal-hydride battery. the item’s also not effective below temperatures of 14 degrees Fahrenheit. A GT3 RS with of which option actually comes with both batteries, so the owner can swap between them to enable cold-weather driving if desired.Instead of the typical lug wrench, the GT3 RS comes with of which hefty socket used to remove the single-lug wheels. the item's tucked out of the way under a plastic cover within the frunk (front trunk) area—the torque wrench to budge the wheels through or to the specified 443 lb-ft will be not included. Sure, the item adds noncritical weight, although the item beats the odds of which a roadside-assistance service will have one, in addition to also saves the $300 to purchase one separately.A frunklid made of carbon fiber instead of aluminum saves 3.3 pounds. the item’s also one of the RS’s few material upgrades of which are readily viewable, in addition to the item substantially enhances the front trunklid’s visual appeal when open.Although the item doesn’t look like much, of which will be the automotive world’s first production magnesium roof. Porsche claims of which the item’s 24-percent lighter than an equivalent carbon-fiber part—of which’s 1.5 pounds—not because magnesium will be inherently lighter than carbon fiber, although due to the additional weight added in surface films in addition to paint coats to smooth out the inherently rougher surface of a carbon-fiber panel. Also fascinating will be the complex supply chain: The magnesium will be strip cast in addition to then warm-rolled down to a thickness of 1.1 millimeters at a supplier in Korea, where the item will be then cut into a roof-sized chunk. of which will be then shipped to another supplier in Canada, which shapes the item to the correct curvature at roughly 800 degrees F. The magnesium panel then gets a U.S. passport stamp, where the item receives a plasma oxidation coating. Then, the item’s off to Germany, where the item’s finally bolted in addition to bonded to the GT3 RS’s roof frame in addition to painted along with the rest of the vehicle.Minimizing the tire-to-wheel gap will be already a Porsche strong suit, although the GT3 RS goes a step further with its monster 21-inch rear tires, where they’re tucked up inside the fender. The edges of the fenders on of which car were already rolled for clearance purposes in addition to, as seen earlier, the tires were occasionally rubbing during max-attack laps at VIR.Since the GT3 RS employs the wide bodywork through the Turbo—the RS’s track will be increased by 1.8 inches in front in addition to 1.1 inches within the rear versus the GT3—Porsche had to figure out what to do with those gaping fender vents, which, within the Turbo, feed intercoolers. So the GT3 RS’s intake plumbing was revised to ensure the item’s right now the only 911 to inhale through the side intakes. (All the others breathe through the top of the engine cover.) Upsides include both enhanced intake roar in addition to a claimed 10-hp boost over the rated 500 figure at high speeds through the ram-air effect.

Porsche 911 GT3 RS Tech Dive: Why the item’s the Best 911 of Them All

Source: Porsche 911 GT3 RS Tech Dive: Why the item’s the Best 911 of Them All

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