Segment:
High-performance luxury sports car.
Competitors Era:
Competed with other iconic sports cars of the late 1980s and early 1990s such as Ferrari 348, Chevrolet Corvette C4, and Nissan 300ZX.
Powertrain Layout:
Rear-engine, all-wheel-drive (Carrera 4) configuration.
Design Philosophy:
Evolutionary design from the original 911, incorporating modern aerodynamics and technology while retaining classic styling cues.
Carrera 4 Distinction:
The Carrera 4 variant introduced a sophisticated all-wheel-drive system to the 911 lineage, enhancing traction and stability.
Engine:
Detailed coverage of the 3.6L flat-six engine, including lubrication, cooling, fuel injection, ignition, and emissions systems.
Powertrain:
Comprehensive coverage of the all-wheel-drive system (Carrera 4), including front axle, transfer case, and power distribution.
Transmission:
Detailed procedures for the G50 manual transmission, including clutch, synchronizers, and shifting mechanisms. Coverage may extend to Tiptronic if applicable to the specific model year range and market.
Suspension:
In-depth information on the front and rear suspension systems, including McPherson struts, control arms, coil springs, shock absorbers, and anti-roll bars.
Brakes:
Complete brake system diagnostics and repair, including ABS (Anti-lock Braking System) if equipped, brake fluid, calipers, rotors, pads, lines, and master cylinder.
Steering:
Coverage of the power steering system, including the pump, reservoir, hoses, and steering rack.
Electrical System:
Extensive coverage of the vehicle's electrical system, including battery, charging system, starter, lighting, ignition switch, wiring diagrams, fuses, relays, and electronic control units (ECUs).
Bodywork:
Information on body panel removal and installation, door mechanisms, glass, seals, and collision repair basics.
HVAC:
Details on the heating, ventilation, and air conditioning (HVAC) system, including refrigerant, compressor, condenser, evaporator, and climate controls.
Interior:
Procedures for interior trim removal, seat adjustments, dashboard components, and interior lighting.
Maintenance:
Detailed periodic maintenance procedures, fluid changes, filter replacements, and lubrication schedules.
Troubleshooting:
Comprehensive diagnostic flowcharts, common problem identification, and step-by-step troubleshooting guides for various systems.
Repair:
Step-by-step instructions for removing, disassembling, repairing, assembling, and installing major components and sub-assemblies.
Adjustments:
Procedures for adjusting ignition timing, fuel mixture, valve clearances (if applicable to the specific engine variant), clutch, and parking brake.
Diagnostics:
Information on diagnostic tools, fault code reading (if applicable), and system testing procedures.
Wiring Diagrams:
Detailed electrical schematics and wiring diagrams for all vehicle systems.
Special Tools:
Identification and usage instructions for specialized tools required for specific repair and maintenance tasks.
Depth:
Comprehensive 'bumper-to-bumper' coverage suitable for both professional mechanics and advanced DIY enthusiasts.
Detail Level:
Includes detailed explanations, step-by-step procedures, and pictorial diagrams (illustrations, exploded views, photos).
Data Accuracy:
Provides service data, specifications, tightening torques, wear limits, and allowable tolerances based on factory information.
Engine Type:
Naturally aspirated, air-cooled flat-six (Boxer)
Displacement:
3.6 liters (3600 cc)
Bore X Stroke:
100.0 mm x 76.4 mm (approximate)
Compression Ratio:
10.3:1 (typical for this generation)
Horsepower:
250 PS (184 kW; 247 hp) at 6100 rpm (approximate, may vary slightly by year)
Torque:
315 Nm (232 lb-ft) at 4800 rpm (approximate, may vary slightly by year)
Fuel Delivery:
Bosch Motronic electronic fuel injection (EFI) with individual spark plugs for each cylinder.
Fuel Type:
Unleaded gasoline, typically 91 octane or higher.
Cooling Type:
Air-cooled, with oil cooling for the engine block and an oil cooler in the front bumper.
Oil Change Interval:
Typically every 7,500 miles or annually. Refer to manual for exact Porsche recommendations based on driving conditions.
Major Service:
Major services usually recommended at intervals like 30,000 miles or 4 years, involving more comprehensive inspections and part replacements.
Engine Oil:
Typically a high-quality synthetic oil, e.g., Mobil 1 0W-40 or equivalent. Check manual for specific viscosity and API ratings.
Transmission Fluid:
Specific gear oil for the G50 transmission. Consult manual for Porsche-approved specifications (e.g., Mobilube PTX or equivalent).
Brake Fluid:
DOT 4 brake fluid (e.g., Porsche Tequipment Brake Fluid). Must be replaced periodically to prevent moisture absorption.
Coolant:
N/A (Air-cooled engine, but coolant for HVAC or auxiliary systems may be specified).
Engine Housing Cracks:
Potential for cracks in the magnesium engine housings, especially with early models. Regular inspection recommended.
Rear Main Seal Leaks:
Common leak point at the crankshaft rear main seal, often requiring transmission removal for repair.
Valve Stem Seals:
Wear can lead to oil consumption and blue smoke on startup.
Air Conditioning System:
HVAC systems from this era can be prone to leaks and component failures; serviceability requires specialized knowledge.
Clutch Wear:
Clutch wear is dependent on driving style, but is a serviceable item.
Porsche Legacy:
Continuation of the iconic Porsche 911 lineage, known for its engineering excellence, performance, and driver engagement.
964 Generation Introduction:
The 964 generation (1989-1994) was a significant update to the 911, featuring over 80% new or revised components, including a new engine, transmission, and chassis.
Carrera 4 Introduction:
The Carrera 4 model was introduced at the start of the 964 generation, marking the first time all-wheel drive was offered on a production 911.
Production Period:
1989-1994
Manufacturing Location:
Stuttgart, Germany
