🏷️ Basic Information Identification Make: Ford Model: Sierra RS Cosworth / Escort RS Cosworth Applicable Years: 1987-1992 👋 Introduction Market Position Target Audience: Owners of 1987-1992 Ford Sierra RS Cosworth and Escort RS Cosworth seeking to perform maintenance and repairs. Competitive Analysis Manual Superiority: Offers comprehensive factory-level detail with easy-to-read text and high-quality diagrams, catering to a wide range of user expertise. Key Features Completeness: Covers every single detail on the machine, based on complete disassembly, ensuring thorough repair guidance. Instruction Style: Step-by-step instructions with highly detailed exploded pictures and diagrams for correct and efficient job completion. 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Workshop Manual Language: English Format: PDF Compatibility: All Versions of Windows & Mac Download Type: Instant Download 📖 Manual Coverage Systems Covered Engine Management: Comprehensive coverage of ignition timing, fuel injection systems (Bosch Motronic), engine diagnostics, and emissions control. Powertrain: Detailed repair procedures for the Cosworth YB engine, clutch assembly, and manual transmissions (e.g., Ford MT75). Cooling System: Maintenance and repair of radiator, water pump, thermostat, hoses, and coolant specifications. Fuel System: Information on fuel tank, fuel pump, fuel lines, injectors, fuel pressure regulator, and exhaust system components. Electrical System: Detailed wiring diagrams, starter motor, alternator, battery, lighting, instrumentation, and ancillary electrical components. Brakes: Front and rear brake assembly, ABS (if equipped), brake fluid specifications, and hydraulic system repairs. Suspension Steering: Front and rear suspension components (e.g., MacPherson struts, multi-link rear for Sierra), steering rack, power steering system. Body Chassis: Body panel repair, door mechanisms, glass replacement, chassis specifications, and structural components. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, fluid level checks, and general servicing. Engine Rebuild: Detailed instructions for engine disassembly, component inspection, reassembly, and torque specifications. Transmission Repair: Step-by-step guide for transmission removal, internal component repair, and reinstallation. Brake System Service: Replacement of brake pads, rotors, calipers, master cylinder, and bleeding procedures. Electrical Troubleshooting: Diagnosis of electrical faults using wiring diagrams, testing components, and repairing circuits. Suspension Alignment: Adjustments for wheel alignment, suspension component replacement, and steering system diagnostics. Technical Depth Diagnostic Capabilities: Includes fault finding and troubleshooting sections for identifying common and complex vehicle issues. Repair Complexity: Suitable for both do-it-yourselfers and experienced mechanics due to step-by-step instructions and detailed diagrams. Diagrams Illustrations: Features top-quality diagrams and exploded views for clear visual guidance on repair procedures. 📊 Manual Specifications File Characteristics File Format: PDF Printability: All pages are printable for convenient workshop use. Searchability: Implied to be searchable text within the PDF for efficient information retrieval. Physical Attributes Binding Type: Digital (PDF) - Not applicable for physical binding. Paper Type: Not applicable for digital format. Focus is on digital quality. Cost Effectiveness Value Proposition: Inexpensive way to keep vehicles working properly, saving on postage and packaging compared to physical manuals. ⚙️ Engine Specifications Primary Engine Engine Code: Cosworth YB Engine Type: 2.0L 16-valve DOHC Turbocharged Inline-4 Performance Horsepower Range: Approximately 204-230 PS (150-169 kW) depending on specific model and market. Torque Range: Approximately 275-290 Nm (203-214 lb-ft) depending on specific model and market. Fuel System Fuel Delivery: Bosch Motronic fuel injection system, often with Garrett turbochargers. Technical Details Bore X Stroke: 87.6 mm x 86.0 mm (typical for YB engine) Compression Ratio: Typically 8.0:1 or 8.2:1 🔧 Transmission Standard Transmission Type: 5-speed manual Common Gearbox: Ford MT75 Optional Transmission Type: Not typically offered with automatic transmissions on RS models. Features Drive Layout: Rear-wheel drive (Sierra RS Cosworth) and All-wheel drive (Escort RS Cosworth, some Sierra variants). 📐 Dimensions Exterior Sierra Length: Approx. 4414 mm (Sierra RS Cosworth) Width: Approx. 1700 mm (Sierra RS Cosworth) Wheelbase: Approx. 2600 mm (Sierra RS Cosworth) Exterior Escort Length: Approx. 4110 mm (Escort RS Cosworth) Width: Approx. 1710 mm (Escort RS Cosworth) Wheelbase: Approx. 2550 mm (Escort RS Cosworth) Weights Curb Weight: Approx. 1200-1400 kg depending on model and configuration. 🛡️ Safety Features Ratings Historical Ratings: Modern safety rating systems were less prevalent during this era. Focus on structural integrity and driver-controlled safety features. Active Features Braking System: Performance-oriented brakes, often with ventilated front discs. ABS was an option on later models. Passive Features Body Structure: Reinforced chassis and body structure designed to withstand performance driving stresses. 💡 Technology Features Infotainment Audio System: Basic Ford radio/cassette players, often with upgraded speaker systems for performance models. Driver Assistance ABS: Anti-lock Braking System was an optional feature on many variants during this period. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 6,000-10,000 miles (9,600-16,000 km) or 6-12 months, with high-performance use recommending more frequent changes. Timing Belt Replacement: Crucial: Typically every 30,000-50,000 miles (48,000-80,000 km) due to interference engine design. Fluid Specifications Engine Oil: API SG/SH or ACEA A2/A3, typically 5W-30 or 10W-40 synthetic or semi-synthetic oil. Coolant: Ethylene glycol-based coolant, typically a 50/50 mix with distilled water, meeting Ford specifications. Brake...