🏷️ Basic Information Identification Make: Porsche Model: 944 Turbo Generation: Second Generation (G2) Model Codes: 944 Turbo (951) Applicable Years: 1987, 1988, 1989, 1990, 1991 👋 Introduction Market Position Segment: High-performance sports coupe, front-engine, rear-wheel-drive Competitive Analysis Competitors: Ferrari 328, Chevrolet Corvette, Nissan 300ZX (Z31), Toyota Supra (MkIII), BMW M3 (E30) Key Features Handling Bias: Excellent balance, renowned handling characteristics for its era Powertrain Configuration: Front-mounted turbocharged inline-four engine, transaxle design for weight distribution Design Philosophy: Blend of comfort, practicality, and potent performance, a departure from Porsche's rear-engined tradition 📋 Manual Details Coverage Areas Primary Coverage: Porsche 944 Turbo models from 1987 to 1991 Page Count Estimated Page Count: Variable (PDF document size will vary, but typically comprehensive factory manuals are several hundred to over a thousand pages). Manual Type Type: Repair Service Manual Language Language: English Format Format: PDF Digital Download 📖 Manual Coverage Systems Covered Engine: Engine mechanical (including turbocharging system), fuel injection, ignition, cooling, lubrication, exhaust Transmission: Manual transmission (G50 variant for some later models), clutch, driveline Brakes: Hydraulic brake system, ABS (Anti-lock Braking System) Suspension: Front and rear suspension, steering system Electrical: Complete electrical system, wiring diagrams, lighting, instrumentation, battery, charging system, starter Body And Chassis: Body panels, interior components, doors, windows, climate control, safety systems (airbags if applicable) Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, tune-ups Repair: Engine rebuild, transmission overhaul, brake component replacement, suspension repair, electrical diagnostics and repair Disassembly And Assembly: Detailed step-by-step instructions for component removal and installation Troubleshooting: Diagnostic procedures and fault finding for common and uncommon issues Technical Depth Depth: Comprehensive, suitable for professional technicians and advanced DIY enthusiasts with mechanical aptitude 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Full Printable Zoom Capability Zoom: Zoom IN/OUT functionality for detailed viewing Delivery Method Delivery: Instant Download Required Software Software: Adobe PDF Reader & WinZip Compatibility Operating Systems: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Code: M44/51 (Turbo) Configuration: Inline-4 cylinder, turbocharged, intercooled Displacement: 2.5 Liters (2479 cc) Performance Horsepower: 217-224 hp @ 5800-6000 rpm (varies slightly by market and year) Torque: 245-251 lb-ft (332-340 Nm) @ 3500-4000 rpm Fuel System Fuel Delivery: Bosch L-Jetronic fuel injection with turbocharging Recommended Fuel: Premium Unleaded Gasoline (91+ Octane) Turbocharging Turbocharger Model: Garrett AiResearch T03/04 (single turbo) Boost Pressure: Approximately 0.7 bar (10.1 psi) regulated 🔧 Transmission Standard Type: 5-speed Manual Optional Type: None for Turbo models Features Transaxle Design: Rear-mounted transaxle for optimized weight distribution (50/50 front/rear) 📐 Dimensions Exterior Length: Approximately 4216 mm (166.0 in) Width: Approximately 1715 mm (67.5 in) Height: Approximately 1280 mm (50.4 in) Wheelbase: Approximately 2450 mm (96.5 in) Weights Curb Weight: Approximately 1370 kg (3020 lbs) 🛡️ Safety Features Ratings Historical Ratings: While official crash test ratings from modern agencies are not directly applicable, Porsche vehicles of this era were built to rigorous safety standards for their time. Active Features ABS: Standard Anti-lock Braking System (ABS) Passive Features Rollover Protection: Integrated roll bar within the windshield frame Seatbelts: 3-point inertia reel seatbelts 💡 Technology Features Infotainment Audio System: Typically featured Blaupunkt or Porsche branded premium audio systems, often with cassette players and optional CD changers. Driver Assistance ABS: Standard ABS (as mentioned in safety) Connectivity Cruise Control: Optional cruise control system 🔧 Maintenance Service Intervals Oil Change: Typically every 5,000-7,500 miles or 1 year, whichever comes first, using high-quality synthetic oil. Timing Belt Replacement: Critical: Every 30,000-40,000 miles or 3-4 years due to potential for catastrophic engine damage if it breaks. Fluid Specifications Engine Oil Type: API SG or higher, viscosity typically 5W-40 or 10W-40 synthetic (consult manual for exact specification and capacity). Coolant Type: Porsche-specified coolant or equivalent OAT/HOAT coolant, mixed 50/50 with distilled water. Brake Fluid Type: DOT 4 or DOT 5.1 high-performance brake fluid. Transmission Fluid: API GL-5, SAE 75W-90 or 80W-90 gear oil (capacity approx. 2.2 liters for 5-speed). Known Issues Rear Main Seal: Leaking rear main seal (RMS) is a common issue, particularly on higher-mileage vehicles. Fuel Pressure Regulator: Failure of the fuel pressure regulator can lead to rich or lean conditions. Water Pump: Original water pumps were prone to failure; upgraded units are recommended. Throttle Body Housing: Cracking or degradation of the plastic throttle body housing can cause vacuum leaks. Alternator Bearings: Worn alternator bearings can lead to noise and eventual failure. 📚 Vehicle History Brand Heritage Heritage: Porsche's legacy of engineering excellence and motorsport success. Model Evolution 944 Introduction: The 944 was introduced as a successor to the 924, offering significantly improved performance and a more premium feel. 944 Turbo Introduction: The 944 Turbo (951) was launched in 1985, bringing turbocharged power and enhanced dynamics to the 944 line. Production Production Period: Porsche 944 Turbo produced from 1985 to 1991. Manufacturing Location: Stuttgart, Germany 🏆 Awards & Recognition Recognitions Performance Acclaim:...