2007 Porsche 911 gt3 problems

General information about Porsche-911 gt3
Overview of popular issues

The Porsche 911 GT3 is a high-performance homologation model of the Porsche 911 sports car. It is a line of high-performance models, which began with the 1973 911 Carrera RS. The GT3 has had a successful racing career in the one-make national and regional Porsche Carrera Cup and GT3 Cup Challenge series, as well as the international Porsche Supercup supporting the FIA F1 World Championship.

Road cars

996 GT3

911 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 a homologation model for the cars entered in the FIA GT3 cup. 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 GT's and Turbo set it apart from 996 Carrera models, as it shared nothing with the standard so-called "integrated dry sump" (eg. wet-sump) flat-six engine used in the water-cooled 996 Carrera engine introduced in MY1999. The 996 GT engine is naturally aspirated and based on "The Mezger" racing engine used in the 962 and 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 standard 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 finned cylinders, 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 962 racing car's engine, which is based on the same crankcase. The 962 differs, however, by using six individual cylinder heads while the "Mezger" (GT1 engine block) 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 crankcase. Up until model year 2004 996 production, the basic casting used for the "Mezger" crankcase of the GT3 was the same as the 996 GT1 LeMans cars, and the same "964.." block part-number is visible on the bottom of the crankcase. Beginning with MY2004 however, production was outsourced to Valmet facilities in Spain, France, and Austria, and all subsequent road-legal Mezger engines are part-numbered "996.." (even 997 Generation).

Because the GT1 Mezger block uses the same legacy Porsche 356 engine to transmission mounting flange configuration, the 996 GT3 used a 6-speed manual gearbox also of air-cooled 911 heritage. This new G96/50 gearbox has interchangeable gear ratios and is more durable making it more suitable for racing than the standard type 996 Carrera's 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 bucket seats 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.

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Common 2007 Porsche 911 gt3 problems

Based on the information from the sources provided, here are some common problems with the Porsche 911 GT3 2007 based on complaints from owners:

Uneven Brake Pad Wear: Owners have reported that the brake pads on the Porsche 911 GT3 2007 can wear unevenly, especially if the car is tracked. This issue is more noticeable with stainless steel rotors, where the pads start to wear unevenly. It is recommended to inspect the brake pads regularly to address this problem.
Trunk Button Malfunction: A common issue reported by owners is the malfunction of the trunk button. This problem is not exclusive to the GT3 model but can occur in many 997 models. The trunk button may break, leading to difficulties in opening or closing the trunk. While this issue is common, it is relatively minor compared to other potential problems.
Cup Holder Breakage: Another common problem with the Porsche 911 GT3 2007 is the breakage of cup holders. This issue is not specific to the GT3 model but can affect various 997 models. Owners have reported that the cup holders may break and fail to latch properly, causing inconvenience.
Engine Failure: Engine failure has been reported by some owners of the 997.1 GT3 model. Warning signs of potential engine failure include a blackened exhaust tip on the left exhausts only and a ticking sound from the engine at idle. If these signs are observed, it is advised to address the issue promptly, as a new engine replacement can be costly.
Rear Main Seal and Front Crankshaft Seal Issues: Some owners have experienced problems with the rear main seal (RMS) and front crankshaft seal. These seals are crucial components that can lead to oil leaks if they fail. Replacing these seals may require dropping the engine, which can be a labor-intensive process.

These common problems highlight the importance of regular maintenance and thorough inspections when owning a Porsche 911 GT3 2007. Addressing these issues promptly can help maintain the performance and reliability of the vehicle.

What is the problem with the 911 GT3?

Problems with the 991.1 GT3's 3.8-liter engine were apparent right from the start. Shortly after the release of the car, Porsche issued a recall for all GT3 models in March 2014. That notice came as a result of loosened screw joints on the connecting rods. The issue ultimately caused two cars to suffer engine fires.

How many 2007 GT3 were made?

Porsche 911 GT3 Production Build Numbers

Car	Years of	Units Built
996.2 GT3 RS	2003–2004	682
997.1 GT3	2006–2009	2,378
997.1 GT3 RS	2006–2009	1,106
997.2 GT3	2009–2011	2,256

Is the 997.1 GT3 engine reliable?

As long as extra maintenance has been undertaken to account for the additional track time, you shouldn't be too worried. Engine oil, coolant, brake fluid and transmission oil are all items that should be changed more frequently under track duties. For the most part, 997 GT3s have proven to be very reliable.

Is Porsche 911 GT3 good?

Not only are they a great daily driver, they are one of the baddest cars on the road! What's so special about the Porsche 911 GT3 RS, when the 911 Turbo S seems to have more power? Because the GT3 RS is a proper track-day sports car, and the turbo s is just a standard 911 with a big engine.

2007 Porsche 911 gt3 complaints

The NHTSA has received 0 complaints about various vehicle components related to the 2007 Porsche 911 gt3.

You can leave your car complaint via the special form below.

Additional sources

More sources of information about 2007 Porsche 911 gt3 problems:

Problems with your GT3? - Page 2 - Rennlist - Porsche Discussion ...

https://rennlist.com/forums/997-gt2-gt3-forum/674590-problems-with-your-gt3-2.html

Jan 12, 2012 ... 997 GT2/GT3 Forum - Problems with your GT3? - I've always wondered if a GT3 is the perfect car or whether there are some owners, ...

997.1 GT3 Engine Issues - 6SpeedOnline - Porsche Forum and ...

https://www.6speedonline.com/forums/gt3-gt2/212843-997-1-gt3-engine-issues.html

Jun 1, 2010 ... 997.1 GT3 Engine Issues · Engine replaced due fully damaged cylinder 6. A new engine was installed from Porsche · Engine pulled out again for RMS ...

997.2 gt3 reliability - Rennlist - Porsche Discussion Forums

https://rennlist.com/forums/997-gt2-gt3-forum/1139067-997-2-gt3-reliability.html

997 GT2/GT3 Forum - 997.2 gt3 reliability - Im considering buying a 7.2 gt3. I wont be tracking it much at all (once or twice a year tops) ...

997.1 GT3 Engine Issues - Page 1 - Porsche General - PistonHeads ...

https://www.pistonheads.com/gassing/topic.asp?h=0&f=48&t=1222628

Nov 26, 2012 ... 997.1 GT3 Engine Issues · Ensure the clutch biting point is not high - if so the clutch may need replacing · Check the brake discs for cracks - ...