Porsche 911 GT3

Porsche 911 GT3

Porsche 911 GT3
Porsche
aka	Type aka here, not up there
Production	1999- Present
Class	Supercar
Body Style	2-door, 2-seat Rear-Engined Coupe
Length	178.94 in (4,545 mm)
Width	72.91 in (1,852 mm)
Height	49.96 in (1,269 mm)
Wheelbase	2355 mm / 92.7 in
Weight	1451 kg / 3200 lbs
Transmission	6-speed manual or 7-speed dual-clutch gearbox RWD
Engine	3.8 litre Flat-6
Power	415 hp (309.5 KW) @ 7600 rpm 299 lb-ft. (405.39 Nm) of torque @ 5500 rpm
Similar	Chevrolet Camaro Z28
Designer	Designer (lead designer if it was a team effort)

The Porsche 911 GT3 was introduced in 1999 as a high performance version of Porsche's first water-cooled version of the 911, the 996, to continue the quarter-century tradition of low-weight RS models that ended with the 993 RS. The GT3, named after the FIA GT class it was intended for, did not use the rather simple engine of the regular production versions of the 996, but a naturally-aspirated version of the turbo-charged Porsche 962 and Porsche 911 GT1 race cars. Later, the turbo-charged Porsche 911 GT2 was added to the maker's lineup, but unlike its predecessor 993 GT2, did not fit into GT racing regulations. The racing versions of the GT3 have won several major 24h races outright, and mainly dominated their class at Le Mans.

Recent Changes

• For 2010, Porsche updated the GT3 with a facelift and a power increase from the 3.8 litre flat-six to 435 hp and 317 lb-ft of torque. This is good for a 0-60 mph jaunt in 4.1 seconds and a top speed of 193 mph. Handling is improved as well, with a modified stability management system that allows for graduated settings for both stability and traction controls, along with enlarged carbon ceramic brakes that improve stopping distances. Prices start at €98,100 for most of Europe, €116,947 for Germany (incl VAT), $112,200 for USA and £81,914 for UK.[1]

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Main Competitors

-Chevrolet Corvette ZR1 -Nissan GT-R

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Criticisms

-"The Turbo may look better on paper, but it’s hard to match the feel and precision of Porsche’s naturally aspirated 911s, especially considering the GT3’s" -Car and Driver

Generations

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992 Generation (2020-Present)

992 GT3

Porsche revealed the 992 GT3 in February 2021. The 992 GT3 has the same engine as its predecessor, a 4.0-litre flat-six updated to produce 510 PS (503 hp; 375 kW) at 8,400 rpm and 470 N⋅m (347 lb⋅ft) of torque at 6,250 rpm. The 992 GT3 is capable from 0–100 km/h (0–62 mph) in 3.4 seconds.[53] The 992 moves to an unequal-length control-arm front suspension influenced by the 991 RSR. The rear wing has swan-neck pylons with increased downforce compared to previous GT3 models. The GT3 is offered with either a seven-speed dual-clutch PDK or a six-speed manual.

992 GT3 Touring

A Touring package is available, which replaces the rear wing with an automatically deployable rear spoiler.

992 GT3 RS

The 992 GT3 RS was announced in August 2022. It features tremendous changes over the 992 GT3 of a particularly aerodynamic nature, resulting in maximum downforce of 860 kg of downforce at 285kmh, a two-fold increase over the 991.2 GT3 RS, and 409 kg of downforce at 200kmh.[56] The rear wing features a static portion and an active portion, which can open and close automatically based on vehicle data, or manually with a button fitted to the steering wheel (similar to Formula 1's Drag Reduction Systems (DRS)).

Its engine produces 525 PS at 8500 rpm and 465 Nm of torque at 6300 rpm. The kerb weight of the car in European specification is 1450 kg, and it's capable of achieving 100 km/h in 3.2 seconds, and 200 km/h in 10.6 seconds. The top speed stated by Porsche is 296 km/h.

Fifth generation (2013-2016)

991.1 GT3

Porsche introduced the 991 GT3 at the Geneva Motor Show in 2013. The 991 GT3 features a new 3.8 litre direct fuel injection (DFI) flat-six engine developing 475 hp (354 kW; 482 PS) at 8,250 rpm, a Porsche Doppelkupplung (PDK) double-clutch gearbox and rear-wheel steering. The engine is based on the unit fitted in the 991 Carrera S, but shares only a few common parts. All other components, particularly the crankshaft and valve train, were specially adapted or developed for the 991 GT3. For example, the 991 GT3's engine uses titanium connecting rods attached to forged piston, in order to allow the engine to reach up to 9,000 rpm. The dual-clutch gearbox is another feature specially developed for the 991 GT3, based on sequential manual transmissions used in racing cars.

After a number of engine failures, it was discovered that the supplier of the connecting rod bolts had made a production error in the alloy of the bolt. Subsequently, all 785 of the GT3s that had been produced up to that point were recalled to the dealership organisations and fitted with new engines, and all owners were issued with an extra year's warranty.

A formal letter sent to Porsche from members of the US-based Rennlist.com "991.1 GT3 Concerned Owners Group" about additional engine durability issues lead to a meeting between representatives of the owners group and Porsche, including head of Porsche Motorsport Dr. Frank-Steffen Walliser, on 3 August 2017 at the Porsche North America Atlanta headquarters. According to Dr. Walliser the concerning high-RPM misfire issue could be traced primarily to a metallurgical defect in certain batches of "finger followers" (valve train rocker arms) and secondarily to individual driving patterns and engine variations – such as temperature, oil quality, oil viscosity and parts tolerances – that lead to increased wear of the specific parts. In response to the issue and after implementing new engine tests to trace down the issue Porsche had developed revised camshafts and finger followers and offers a fully transferable 10-year, 120,000 mile extended engine warranty to all 991.1 generation GT3 owners worldwide that covers the replacement of the defective engine with a new engine with the revised parts if failure is a direct result of the finger-follower issue. The base bumper-to-bumper warranty and all other warranty terms and conditions remain unchanged. Porsche confirmed that the issue is isolated to the 991.1 GT3, and that the 991.1 GT3 RS and the 991 R are not affected.

The 991 GT3 is claimed to be able to accelerate from 0-60 mph (97 km/h) in 3.1 seconds or less, and the quarter mile in 11.2 seconds at 126 mph (203 km/h). The GT3 has a claimed top speed of 195 mph (314 km/h). The lap time on the Nürburgring Nordschleife is 7 minutes and 25 seconds.

991.1 GT3 RS

Porsche launched the RS version of the 911 GT3 at the Geneva Motor Show in 2015.[43] Compared to the 911 GT3, the front fenders are now equipped with louvers above the wheels and the rear fenders now include Turbo-like intakes, rather than an intake below the rear wing. The roof is made from magnesium. The interior includes full bucket seats (based on the carbon seats of the 918 Spyder), carbon-fibre inserts, lightweight door handles and the Club Sport Package as standard (a bolted-on roll cage behind the front seats, preparation for a battery master switch, and a six-point safety harness for the driver and fire extinguisher with mounting bracket).The car was nominated as one of the Britain's best driver's car 2014 by Autocar magazine.

The 3.8-litre unit found in the 911 GT3 is replaced with a 4.0-litre unit with 500 PS (370 kW; 490 hp) and 469 N⋅m (346 lb⋅ft) of torque. The transmission is PDK only. The drivetrain delivers 0–100 km/h (0–62 mph) in 3.4 seconds (0.6 seconds quicker than the 997 GT3 RS 4.0) and 0–200 km/h (0–124 mph) in 10.9 seconds. The 991 GT3 RS also comes with functions such as declutching by "paddle neutral" — comparable to pressing the clutch with a conventional manual gearbox –- and Pit Speed limiter button. As with the 911 GT3, there is rear-axle steering and Porsche Torque Vectoring Plus with fully variable rear axle differential lock. The Nürburgring Nordschleife time is 7 minutes and 20 seconds.

991.2 GT3

Porsche unveiled the facelifted 991.2 GT3 at the 2017 Geneva Motor Show. Extensive changes were made to the engine allowing for a 9,000 rpm redline from the 4.0 litre flat-six engine derived from Porsche 911 GT3 R and Cup racing cars. The engine has a power output of 500 PS (493 hp; 368 kW) and 460 N⋅m (339 lb⋅ft) of torque. Porsche's focus was on reducing internal friction to improve throttle response. Compared to the 991.1, the rear spoiler is 0.8 inch taller and located farther back to be more effective resulting in a 20% increase in downforce. There is a new front spoiler and changes to the rear suspension along with larger ram air ducts. The car generates 154 kg (340 lb) of downforce at top speed. The 991.2 GT3 brought back the choice between a manual transmission or a PDK dual clutch transmission.

Performance figures include a 0–97 km/h (0–60 mph) acceleration time of 3.8 seconds (3.2 seconds for the PDK version) and a quarter mile time of 11.6 seconds. The GT3 can attain a top speed of 319 km/h (198 mph).

GT3 Touring

Following the roots of the 2016 991.1 911 R, a touring version of the GT3 was introduced that removes the rear wing and replaces it with the modified retractable rear spoiler from the Carrera GTS (with a Gurney flap and 20-degree deployment angle) to give a more smooth and flowing aesthetic image, though it extends further upwards to provide extra downforce. The spoiler deploys at 121 km/h (75 mph) and retracts at 80 km/h (50 mph). It can also be manually deployed by the press of a button. The downforce is 104 kg (230 lb) less than the standard GT3 at top speed. Top speed is also reduced at 315 km/h (196 mph). The Touring is only available with a manual transmission, features leather versus Alcantara, and cannot be specified with the Clubsport package available with the normal GT3. Other options and features remain the same as the GT3. The suspension settings are said to be identical to the standard GT3 as is the engine. However, the air intake replaces the normal GT3's box paper air filters with a conic high flow BMC air filters and adds membrane on the two air filter chambers under the gurney flap that are the reasons of the sound differences between the normal GT3 and the GT3 Touring.[46][47][48] The touring, unlike the 911 R is not produced in limited numbers, therefore, discouraging high price speculation.

991.2 GT3 RS

In February 2018, Porsche unveiled a facelifted GT3 RS model to continue their updates for the 991 generation of the 911. Changes include a new engine similar to the GT3 and RSR models with a 9,000 rpm redline and 20 PS (15 kW; 20 hp) and 10 N⋅m (7.4 lb⋅ft) increase over the previous GT3 RS, NACA ducts for brake cooling, modified front fascia (similar to the 991.2 GT3), side skirts and rear wing (similar to the GT2 RS) for increased downforce, ball joints on all suspension links, front helper springs, lightweight glass for the rear and rear-side windows and a newly developed tyre compound. A Weissach package including additional carbon fibre body and interior parts as well as magnesium wheels and stiffer suspension settings is available as an option.

On 18 April 2018, driven by Kévin Estre the 991.2 GT3 RS set a lap time of 6:56.4 around the Nürburgring Nordschleife.[51] It is the third Porsche production car to break the 7 minute barrier around the track, the first being the 918 Spyder.

997 generation (2006–2011)

997.1 GT3

In February 2006, Porsche revealed the first generation 997 GT3, commonly now known as the 997.1 GT3. In addition to a new 415 PS (305 kW) 3.6 litreflat-six engine, the vehicle featured "zero lift" aerodynamics, meaning the car creates only aerodynamic downforce and no grip-diminishing "lift" upwards and away from the road surface. The vehicle made use of a modified, track oriented version of Porsche's active PASM suspension making it the first of Porsche's RS or GT3 versions to feature an electronically adjustable suspension system. Also available was a navigation system and Porsche's "sports chrono" gauge package. The car went to sale in summer of 2006 and had a starting price of $106,000 USD. A total of 917 units were sold in the United States and 46 units in Canada.

The vehicle has a rated 0-60 mph (97 km/h) time of 4.1 seconds and has a top speed of 193 mph (311 km/h). Road and Track was able to achieve a 0-60 mph run in 3.8 seconds.  Porsche's official test-driver Walter Röhrl completed the Nürburgring Nordschleife in 7 minutes 42 seconds with the 997 GT3 in 2006.

997.1 GT3 RS

Porsche also offered an RS version of the 997 GT3. In common with its predecessors, it was a homologation model for use in a range of racing series. The 997 GT3 RS was introduced in Europe in October 2006 and in North America in spring 2007.

The 997 GT3 RS is 20 kg (44 lb) lighter than the 997 GT3, weighing in at 1,370 kg (3,020 lb).[12] This weight-saving was achieved by the use of an adjustable carbon fibre wing, a steel engine cover, and a lightweight plastic windscreen. The weight savings gives the 997 GT3 RS corresponding engine power to curb weight ratio of 300 hp (224 kW) per tonne.

The body of the 997 GT3 RS is 64 mm (2.5 in) wider at the rear than the 997 GT3 (a legacy from the Carrera 4 models with which it shares its body shell). The muscular-looking rear end conceals a wider track that not only improves directional stability but also increases the potential cornering grip. However, drag is increased and top speed is reduced due to the larger rear wing. In addition to the new technology, the paint scheme and body panels are all designed specifically for the RS.

The US version of the 997 GT3 RS has a standard rear window (not plexiglas) and the smaller 911 fuel tank to comply with rules of SCCA, Can-Am, and IMSA. For Grand-Am races, the central locking wheel nut is replaced with the standard five-lug pattern required under Grand-Am rules.

Production of the first generation 997 GT3 RS (997.1 GT3 RS[13]) ended in 2009. An estimated 1,168 vehicles were delivered worldwide, with a total of 410 units sold in the United States and 42 units in Canada.[14

997.2 GT3

In 2009, Porsche launched the 2nd Generation 997 GT3 (commonly known as the 997.2 GT3[15]), with an enlarged 3.8 litre engine rated at 435 PS (320 kW). It also featured a number of new options including dynamic engine mounts and a pneumatically lifting front axle to compensate for the low ground clearance. The rear spoiler was also modified along with other parts of the bodywork. Deliveries in Europe commenced in November the same year. A total of 654 units were sold in the United States and 58 units in Canada.

997.2 GT3 RS

For 2010, the second generation 911 GT3 RS (known as 997.2 GT3 RS[16]) received an additional 15 PS (11 kW; 15 hp) due to a new 3.8-litre flat-6 engine, bringing total power output up to 450 PS (331 kW; 444 hp). The car was not approved for competition in the United States by IMSA American LeMans. Grand-Am originally did not approve the car, but after performance issues (a Porsche team did not compete at the Indy Grand Prix of Alabama round), Grand-Am approved the second-generation car in April 2010.

Porsche test drivers had intended[19] to enter the 2011 12 Hours of Nürburgring on a standard road legal 911 GT3 RS, but had to withdraw due to health reasons from the team that comprised racers Roland Asch and Patrick Simon, plus journalists Horst von Saurma and Chris Harris. The car, entered in cooperation with sport auto (Germany),[20] is registered as S-GO 2400, and was driven from Weissach to Nürburg. The RS was modified according to safety requirements, which included a larger roll cage and fire extinguisher. As no race tyres were available for 19" wheels, the 18" wheels of the Carrera Cup racers were used. Asch qualified with 9:15, 42nd overall, and 9th[21] among the 17 SP7 class entrants, only beaten by its race-prepared Porsche 997 siblings. In an otherwise disappointing race for Porsche, with the best race 997 finishing only 6th, the road-legal car did 145 laps, 9 less than the winning BMW, for place 13.[22] It supposedly had to cover another 306 km, on the Autobahn back home.

A total of 541 units sold in the United States and 71 units in Canada.

997.2 GT3 RS 4.0

The 911 GT3 RS 4.0, launched in 2011, was the final evolution of the 997 GT3 and featured a 4.0 litre flat-six engine (the largest engine offered in a street-legal 911).[23] The engine itself uses the crankshaft from the RSR with increased stroke dimensions (from 76.4 mm to 80.4 mm). This change increased the power output to 500 PS (368 kW; 493 hp) at 8,250 rpm and 460 N⋅m (339 lbf⋅ft) of torque at 5,750 rpm. Chassis development was influenced by the GT2 RS and uses parts from other RS 911s. Front dive planes give additional downforce up front. The car weighs in at 1,360 kg (2,998 lb),[24] giving it a power-to-weight ratio of 365 hp per ton. Only 600 cars were built.[23][25] At 493 hp (368 kW),[26] the engine is one of the most powerful six-cylinder naturally aspirated engines in any production car with a 123.25 hp (92 kW) per litre output.

Performance figures include 0–97 km/h (0–60 mph) acceleration time of 3.5 seconds and a top speed of 311 km/h (193 mph).[27] The lap time on the Nürburgring Nordschleife is 7 minutes and 27 seconds.

The car was offered in Basalt Black, Carrera White, Paint to Sample Non Metallic and Paint to Sample Metallic colours. A total of 141 units were sold in the United States and 16 units in Canada.

996 Generation (1999-2005)

996.1 GT3

The "GT3" nameplate was introduced in 1999 as part of the first generation of the Porsche 996 model range (commonly known as 996.1). As with Porsche's previous 911 RS models, the 996 GT3 was focused on racing, and so was devoid of items that added unnecessary weight to the car. Sound deadening was almost completely removed, as were the rear seats, rear loud speakers, sunroof, and air conditioning, although automatic air conditioning and CD/radio became no-cost optional add-ons.

The engine of the 996 GT3 set it apart from most of the other Porsche 996 models, although it shared the same basic design of the standard so-called "integrated dry sump" flat-six engine. The engine is naturally aspirated and based on the unit used in the Porsche 962 and Porsche 911 GT1 race cars. That engine was known as the 'Mezger' engine, after its designer Hans Mezger. The engine uses the original air-cooled 911's versatile dry-sump crankcase, with an external oil reservoir. The 996 GT3 has 360 PS (265 kW; 355 hp), compared to the 300 PS (221 kW; 296 hp) of the regular Porsche 996. In GT3 configuration, this so-called "split" crankcase (meaning the parting line of crankcase is on the crankshaft centreline) uses, instead of a fan and finnedcylinders, separate water jackets added onto each side of the crankcase to cool banks of three cylinders with water pumped through a radiator. Thus, the GT3 engine is very similar to the completely water-cooled Porsche 962 racing car's engine, which is based on the same crankcase. The 962 differs, however, by using six individual cylinder heads while the GT1/GT3, like the air and water-cooled Porsche 959, uses two cylinder heads, each covering a bank of three cylinders. The GT3 engine could thus also be thought of as similar to a 959 engine, but with water-cooled cylinders. Up to early model year 2004 996 GT3 production, the basic casting used for the crankcase of the GT3 was the same as the air-cooled engine. The "964" casting number was visible on the bottom of the crankcase, and on areas normally machined in air-cooled applications, but not in water-cooled ones. The crankcase casting was changed in mid-2004 to a "996" casting number crankcase to eliminate these external air-cooled remnants, but internally it was the same.

Because the 911 air-cooled crankcase uses the Porsche 356 engine to transmission mounting flange configuration, the 996 GT3 used a manual gearbox also of air-cooled 911 heritage. This gearbox has interchangeable gear ratios and is more durable making it more suitable for racing than the standard 911 type 996 gearbox.

To bring the vehicle's track-prowess to the maximum level, Porsche endowed the GT3 with enlarged brakes, a lowered, re-tuned suspension system, lighter-weight wheels and a new front bumper with matched rear spoiler to help increase downforce, thereby increasing grip.

Porsche offered a no-cost option for the GT3 called the 'Clubsport' package. This option replaced the standard electrically adjustable leather front seats with manually adjustable racing buckets finished in fire-retardant fabric, single mass flywheel, bolt-in half-roll cage, 6-point drivers racing harness (also replacing the standard side airbags), fire extinguisher (mounted in the front passenger footwell) and preparation for a battery master switch. The Clubsport option was never offered to US customers, ostensibly due to the additional DOT crash testing that would have been required to allow US sales.

996.2 GT3

Porsche made significant updates to the GT3 for 2004 (the first year the car was offered to US customers), using the 2002 996 facelift including headlights that were differentiated from the Porsche Boxster. The 2004 version is commonly known as the 996.2 GT3. Horsepower was raised to 381 PS (280 kW) and torque to 284 lb·ft (385 N·m), 80% of which was available from 2,000 rpm. The braking setup was upgraded, now featuring 6-piston calipers on the front (rears remained 4-piston), and the Porsche Ceramic Composite Brake system was offered as an option.

In track testing by American automotive journals, the GT3 managed a 0-60 mph (97 km/h) time of 4.5 seconds and a quarter mile time of 12.0 seconds at 118 miles per hour (190 km/h). During skidpad testing the vehicle posted 1.03g.

Porsche's official test-driver Walter Röhrl completed the Nürburgring Nordschleife with the 996 GT3 in 7 minutes 56 seconds, a feat which was used by Porsche to promote the car.

Worldwide

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Design quirks and oddities

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Awards

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External Links

• Porsche 911 GT3 Official Homepage
• Porsche unveils updated 911 GT3 for 2010
• Officially Official: All the details on the 2010 Porsche 911 GT3
• 2010 Porsche 911 GT3 Posts 7m 40s Time on Nurburgring

This page uses some content from Wikipedia. The original article was at Porsche 911 GT3. The list of authors can be seen in the page history. As with Autopedia, the text of Wikipedia is available under the GNU Free Documentation License.