🏷️ Basic Information Identification Make: Porsche Model: 944 / 924S Product Name: Porsche 944 924S Models Dimension Tolerances Codes Chassis Codes: 944: 944, 944S, 944 Turbo, 944S2, 944 Turbo S; 924S: 924S 👋 Introduction Market Position Target Audience: Porsche 944 and 924S owners, restorers, technicians, and enthusiasts focused on precision and accuracy. Competitive Analysis Differentiation: Focus on precise dimensional data, distinguishing it from general repair manuals; direct access for immediate use. Key Features Value Proposition: Empowers users to ensure factory-correct assembly and diagnose subtle fitment issues, preventing costly errors and ensuring optimal performance. Expert Level Access: Provides access to the same detailed dimensional tolerances used by factory technicians and expert restorers. 📋 Manual Details Coverage Areas Primary Focus: Dimension Tolerances, Specifications, Measurements Page Count Estimated Count: Variable (downloadable, print only needed pages) Manual Type Type: Technical Specification Manual / Workshop Data Language Language: English (assumed based on product description) Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine Dimensions: Block, head, crankshaft, connecting rods, pistons, bore, stroke, clearances Transmission Dimensions: Gearbox housing, shaft clearances, bearing fits Chassis And Body: Frame dimensions, body panel fitment, suspension mounting points, alignment specifications Electrical Component Fitment: Dimensions and tolerances for mounting of key electrical components Procedures Included Measurement Techniques: Guidance on precision measurement for restoration and repair Component Alignment: Specifications for aligning critical mechanical components Part Verification: Ensuring components meet factory tolerances for fit and function Technical Depth Depth: High - Critical for precision assembly, restoration, and diagnosing fitment issues 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text (typical for professional PDFs) Print Quality Print Options: Printable pages as needed Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-4 Cylinder (transaxle layout) Displacement 944 Base: 2.5 Liters (2479 cc) Displacement 944S: 2.5 Liters (2479 cc), 16-valve cylinder head Displacement 944 Turbo: 2.5 Liters (2479 cc), Turbocharged, 8-valve cylinder head Displacement 944S2: 2.7 Liters (2681 cc), 16-valve cylinder head Displacement 924S: 2.5 Liters (2479 cc), derived from 944 engine Performance Hp 944 Base: 143 hp @ 5500 rpm Hp 944S: 187 hp @ 6000 rpm Hp 944 Turbo: 217 hp @ 5800 rpm Hp 944S2: 208 hp @ 6000 rpm Hp 924S: 147 hp @ 5500 rpm Fuel System Injection Type: Bosch L-Jetronic (later models with Motronic) Fuel Type: Unleaded Gasoline (Octane rating as per manual specification) Tolerances Piston To Wall Clearance: Specified in manual (e.g., 0.020-0.040 mm) Crankshaft Bearing Clearance: Specified in manual (e.g., 0.025-0.045 mm for main bearings) Cylinder Bore Out Of Round: Specified in manual (e.g., Max 0.010 mm) Valve Stem To Guide Clearance: Specified in manual (e.g., 0.050-0.080 mm for intake) 🔧 Transmission Standard Type: 5-speed Manual Transaxle (M46, M4S, G30) Optional Type: 3-speed Automatic Transaxle (e.g., 090, 098) Features Layout: Rear transaxle configuration (engine front, gearbox rear) Tolerances Gear Lash: Specified in manual for various gear sets Input Shaft Bearing Preload: Critical measurement for gearbox longevity 📐 Dimensions Exterior Length 944: Approx. 4250 mm Width 944: Approx. 1720 mm Height 944: Approx. 1280 mm Wheelbase 944: Approx. 2400 mm Weights Curb Weight 944 Base: Approx. 1250 kg Gross Vehicle Weight Rating: Specified by model variant Tolerances Body Panel Gap Specification: Precise tolerances for hood, doors, fenders, etc., detailed in manual Chassis Frame Straightness: Reference measurements for structural integrity 🛡️ Safety Features Ratings Crash Test Data: Historic data available, though not primary focus of this manual. Active Features Brakes: Four-wheel disc brakes (ABS optional/standard on later models) Passive Features Restraints: Seat belts, driver and passenger airbags (optional/standard on later models) Tolerances Brake Rotor Runout: Maximum allowable variation for proper brake function 💡 Technology Features Infotainment Features: Early models featured basic AM/FM radio and cassette players; later models offered more advanced systems. Driver Assistance Features: ABS (Anti-lock Braking System) became available and standard on later models. 🔧 Maintenance Service Intervals Oil Change: Refer to model-specific owner's manual; typically every 5,000-7,500 miles or annually. Timing Belt Replacement: Critical item; typically every 30,000-50,000 miles or 3-5 years. Manual will provide exact intervals and procedure checks. Fluid Specifications Engine Oil: Porsche A40 or API SN/SP (viscosity: 0W-40, 5W-40, or 5W-30 depending on climate and specific model; check manual for exact specs) Transmission Fluid Manual: Gear oil, API GL-4, viscosity typically SAE 75W-90 or 80W-90. Transmission Fluid Automatic: Dexron III or equivalent. Coolant: Porsche approved coolant or a high-quality ethylene glycol based antifreeze with corrosion inhibitors. Known Issues Timing Belt Failure: Catastrophic engine damage if not replaced on schedule. Manual provides inspection and replacement procedures. Fuel Injector Seals: Can degrade, leading to fuel leaks and poor running. Manual covers removal and replacement tolerances. Torsion Bar Seizure: Rear torsion bars can seize; manual will detail diagnostic and potential removal/installation tolerances. Tolerances Wheel Alignment Specifications: Camber, caster, toe angles for front...