🏷️ Basic Information Identification Make: Porsche Model: 944 Turbo Model Code: 951 (Turbo) Years Covered: 1985, 1986, 1987, 1988, 1989, 1990, 1991 Generation Generation Name: Second Generation (G2) 👋 Introduction Market Position Market Segment: High-performance Grand Tourer (GT) Target Audience: Enthusiasts, performance drivers, automotive technicians, Porsche owners Competitive Analysis Key Competitors: Ferrari 308/328, Chevrolet Corvette (C4), Nissan 300ZX (Z31), Toyota Supra (Mk2/Mk3), BMW M635CSi Key Features Engine Layout: Front-engine, rear-wheel drive Transaxle Design: Rear-mounted transaxle for optimal weight distribution Aerodynamics: Sleek, aerodynamic bodywork for high-speed stability Performance Focus: Emphasis on balanced handling, braking, and acceleration 📋 Manual Details Coverage Areas Primary Coverage: Workshop Service and Repair Secondary Coverage: Maintenance, Diagnostics, Overhaul, Assembly, Disassembly Page Count Estimated Page Count: Extensive (specific count not provided, typical for Porsche workshop manuals) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, tuning, lubrication system, fuel system, ignition system, cooling system, air intake system Powertrain: Engine, transmission (manual and automatic), clutch, driveshafts, differentials Chassis: Suspension (front and rear), steering system, braking system (ABS included), wheels, tires Electrical: Complete electrical system, wiring diagrams, lighting, instrumentation, battery, starter, alternator, ECU, sensors Body: Body construction, interior trim, exterior panels, doors, windows, glass, seals, bumpers HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system Emissions: Emissions control systems, diagnosis and repair Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, belt inspections, tune-ups Diagnostic Procedures: Troubleshooting guides, symptom analysis, diagnostic trouble codes (DTCs), electrical system diagnosis Repair Procedures: Detailed step-by-step instructions for component removal, installation, and repair Overhaul Procedures: Complete engine and transmission rebuild procedures Assembly Disassembly: Detailed instructions for dismantling and reassembling all major vehicle components Technical Depth Depth Of Coverage: Comprehensive (suitable for professional technicians and experienced DIYers) Proprietary Component Instructions: Includes instructions for manufacturer-specific components Special Tool Identification: Identifies and illustrates Porsche special tools required for specific repairs 📊 Manual Specifications File Format File Format: PDF Searchability: Likely searchable text-based PDF (standard for modern digital manuals) Print Quality Printability: Yes Binding Type Binding Type: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-4 (M44/51) Displacement: 2.5 Liters (2479 cc) Aspiration: Turbocharged and Intercooled Performance Horsepower: 217-220 hp @ 6000 rpm (depending on market and specific year) Torque: 245 lb-ft (332 Nm) @ 3500 rpm (depending on market and specific year) Fuel System Fuel Delivery: Bosch L-Jetronic fuel injection Fuel Type: Unleaded Premium Gasoline Engine Construction Block Material: Aluminum Alloy Head Material: Aluminum Alloy Valvetrain: DOHC (Dual Overhead Camshafts), 16 valves 🔧 Transmission Standard Transmission Type: 5-speed Manual Transaxle Optional Transmission Type: 4-speed Automatic Transaxle (optional, typically less common on Turbo models) Features Transaxle Location: Rear-mounted Fluid Specifications Manual Transmission Fluid: GL-4 SAE 75W-90 (e.g., Mobil 1 Synthetic Gear Lube, Porsche part number 999.907.524.00 or equivalent) Automatic Transmission Fluid: Dexron II or equivalent (check specific year and model for exact specification) 📐 Dimensions Exterior Length: Approx. 4215 mm (165.9 in) Width: Approx. 1700 mm (66.9 in) Height: Approx. 1275 mm (50.2 in) Weights Curb Weight: Approx. 1350-1400 kg (2976-3086 lbs) Wheels Tires Wheel Bolt Pattern: 5x130mm Standard Wheel Size: 16-inch alloy (e.g., Fuchs or phone dial design) Standard Tire Size: 225/50VR16 (front), 245/45VR16 (rear) 🛡️ Safety Features Ratings Crash Test Performance: As per era standards; detailed official ratings may vary by region and year. Known for robust occupant protection for its time. Active Features ABS: Anti-lock Braking System (ABS) standard on Turbo models Braking System: Four-wheel disc brakes (ventilated front and rear) Passive Features Airbags: Driver's side airbag introduced in later years (check specific year) Seatbelts: Three-point inertia reel seatbelts 💡 Technology Features Infotainment Audio System: Factory-installed cassette or radio system (upgradable) Driver Assistance ABS: Standard ABS system Comfort Features Climate Control: Manual or optional automatic climate control Power Features: Power windows, power mirrors, power steering 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-10,000 miles or annually (refer to manual for exact specification and oil type) Timing Belt Replacement: Every 40,000-60,000 miles or 4-5 years (critical due to interference engine design) Fluid Specifications Engine Oil Type: API SG or higher, SAE 5W-40 or 10W-40 synthetic recommended (check manual for exact spec) Coolant Type: Glysantin G48 or equivalent ethylene glycol based antifreeze (50/50 mix with distilled water) Brake Fluid Type: DOT 4 (e.g., Castrol DOT 4, Ate DOT 4, Porsche part number 000.043.205.29 or equivalent) Known Issues Common Problem 1: Cracked dashboard (due to heat and age) Common Problem 2: Fuel line degradation (especially early models, requires replacement with modern materials) Common Problem 3: Power steering rack leaks Common Problem 4: Air conditioning system leaks and component failures Common Problem 5: Timing belt tensioner and roller failure (critical maintenance item) 📚 Vehicle History Brand Heritage Brand Legacy: Porsche, renowned for engineering...