2005 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 2005 Porsche 911 gt3 problems

Based on the information from the sources provided, here are common problems with the Porsche 911 GT3 2005 based on complaints from owners:

Suspension Issues:
- Description: The suspension on the Porsche 911 GT3 2005 can exhibit premature noise due to strut mount problems.
- Resolution: Replacing the strut mounts with a different setup, like Olin's full suspension, can address this issue effectively.
Brake Disc Corrosion:
- Description: Brake discs can corrode on the inside if the car is not used regularly.
- Resolution: Regular inspection by an independent specialist is recommended to detect and address this issue early on.
Interior HVAC Box Foam Issues:
- Description: The HVAC box in the interior can throw foam, leading to potential expensive repairs.
- Resolution: Addressing this issue may involve costly repairs due to age-related wear and tear.
Second Gear Popping Out:
- Description: Second gear may pop out if the car has been heavily abused, indicating synchronizer issues.
- Resolution: Repairing or replacing the synchronizers may be necessary, especially if the car has been subjected to heavy track use.
Coolant Pipe Problems:
- Description: Coolant pipes in the Porsche 911 GT3 2005 are prone to coming loose over time, leading to cooling issues.
- Resolution: Welding or pinning the coolant pipes is recommended to prevent coolant leaks and potential engine damage.

These common problems highlight areas where Porsche 911 GT3 2005 owners may encounter issues and the recommended resolutions to address them effectively.

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.

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.

What is the maintenance of Porsche 911 GT3?

Major maintenance intervals on the 911 GT3 991 versions were planned for 24K miles or 4 years. There are however, additional service items required at 2 and 6 year intervals. In addition, we recommend a PDK clutch fluid replacement at 48K miles or 4 years.

What is the main problem that Porsche has to deal with?

Oil leaks can be a significant concern for any car, including Porsches. If left unaddressed, they can lead to extensive damage. The rear main seal, located between the engine and the transmission, is a common source of oil leaks.

2005 Porsche 911 gt3 complaints

The NHTSA has received 0 complaints about various vehicle components related to the 2005 Porsche 911 gt3.

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

Additional sources

More sources of information about 2005 Porsche 911 gt3 problems:

Are 911's really that reliable? : r/cars

https://www.reddit.com/r/cars/comments/s0xoom/are_911s_really_that_reliable/

Jan 10, 2022 ... I recently read a JD Power article about brand reliability and it said that Porsche ranked second or third I think. I've always wanted a 911 ...

Which model GT3 is most reliable..... - 6SpeedOnline - Porsche ...

https://www.6speedonline.com/forums/gt3-gt2/408008-model-gt3-most-reliable.html

Jun 2, 2017 ... ... 997, current 991 and the new gen 2 991 coming out this year. Seeing as the 991's have engine reliability concerns, "finger follower" issues ...

Mileage of 991.1 GT3 engine failures? - Rennlist - Porsche ...

https://rennlist.com/forums/991-gt3-gt3rs-gt2rs-and-911r/1235707-mileage-of-991-1-gt3-engine-failures.html

Feb 7, 2021 ... 991 GT3, GT3RS, GT2RS and 911R. Mileage of ... transmission problems that ultimately required replacements. ... Sep 2005. Posts: 16,303. Likes: 0.

997 Gt3 /RS owner beware of coolant issues | Porsche 911 UK ...

https://911uk.com/threads/997-gt3-rs-owner-beware-of-coolant-issues.34884/

Oct 2, 2010 ... Has any one in the U.K come across this or had it happen to them? Taken from rennlist There is an aluminum press fitting that goes into the ...