DOHC, 4 Valves per Cylinder, Hydraulic Valve Adjusters
🔧 Transmission
Standard
Type:
6-Speed Manual Transaxle (G96/80)
Optional
Type:
None (GT3 was manual-only)
Features
Differential:
Limited Slip Differential (30% Lock-up)
Fluid Requirements
Gearbox Oil Spec:
Mobil Mobilube SHC 75W-90 (or equivalent GL-4/GL-5)
Gearbox Oil Capacity:
Approx. 2.5 Liters
📐 Dimensions
Exterior
Length:
Approx. 4435 mm
Width:
Approx. 1770 mm
Height:
Approx. 1310 mm
Weights
Curb Weight:
Approx. 1370 kg (3020 lbs)
Gross Weight:
Approx. 1770 kg
🛡️ Safety Features
Ratings
Crash Safety:
N/A (Homologation vehicle, specific consumer ratings not typically assigned)
Active Features
ABS:
Yes (ABS 5.3)
Traction Control:
Yes (ASR - Acceleration Slip Regulation)
Passive Features
Airbags:
Driver, Passenger
Seat Belts:
3-point inertia reel with belt tensioners and force limiters
💡 Technology Features
Infotainment
Head Unit:
Optional CDR-22, PCM (Porsche Communication Management) - Basic for the era
Driver Assistance
ABS Esp:
ABS standard, stability control (PSM - Porsche Stability Management) was optional/deactivated in GT3 variants for track use.
Connectivity
Connectivity Features:
Limited by era, typically CD player, optional navigation.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically 12,000 miles or 1 year (check specific manual recommendations)
Major Service Interval:
Significant maintenance items often recommended at 30,000 - 60,000 miles (e.g., spark plugs, belt inspection).
Fluid Specifications
Engine Oil Specification:
Porsche A40 Approved (e.g., Mobil 1 0W-40 or 5W-40 synthetic)
Brake Fluid Specification:
Porsche DOT 4 Plus (or compatible high-performance DOT 4)
Coolant Specification:
Porsche G48 (ethylene glycol based, pink color)
Known Issues
Engine Reliability:
Generally robust, but IMS bearing failure on some 996 models (though GT3 engines typically used different, more robust IMS solutions or were dry-sump, reducing risk).
Suspension Wear:
Bushings and control arms can wear with hard use, common in performance vehicles.
Clutch Wear:
Wear is dependent on driving style, particularly track use.
Parts Replacement Strategy
Strategy:
Utilize OEM part numbers for guaranteed fitment and quality.
📚 Vehicle History
Brand Heritage
Porsche Racing Legacy:
Direct lineage from Porsche's motorsport successes, especially GT racing.
Model Evolution
Gt3 Origin:
First generation of the dedicated GT3 model, built to homologate racing components for the FIA GT championship.
Production
Manufacturing Plant:
Zuffenhausen, Stuttgart, Germany
Production Years For 996 Gt3:
1999-2005 (including GT3 RS variants)
🏆 Awards & Recognition
Recognitions
Performance Awards:
Consistently lauded by automotive press for track performance and driver engagement.
Ratings
Enthusiast Ratings:
Highly regarded by enthusiasts as a pure driving machine.
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