🏷️ Basic Information Identification Make: Opel Model: Manta / GT 1900 Model Variant: Manta GT 1900, GT 1900 Codes Chassis Code Manta: 1970-1975: Opel 148 (A-Body) Chassis Code Gt: 1970-1973: Opel 185 (Rear-wheel drive GT/E, GT/J) 👋 Introduction Market Position Market Position: The Opel Manta and GT were positioned as sporty, stylish, and accessible European coupes and fastbacks, competing with models like the Ford Capri and Volkswagen Scirocco. They offered a blend of German engineering with a focus on driving dynamics and everyday usability. Competitive Analysis Competitive Analysis: Competed directly with the Ford Capri, which offered a similar sporty coupe profile. The Manta was often seen as a more refined and robust alternative, while the GT offered a unique compact sports car experience. Both appealed to drivers seeking performance and style at a reasonable price point. Key Features Key Features: Rear-wheel drive, robust German engineering, stylish coupe/fastback design, emphasis on driving engagement, availability of sporty trims (e.g., GT/E, GT/J), reliable 1.9L engine. 📋 Manual Details Coverage Areas Coverage Areas: Electrical, Frame and Bumpers, Suspension and Steering, Rear Axle, Brakes, Engine, Transmission, Chassis Sheet Metal, Accessories Page Count Page Count: Not specified in product information, but described as 'very comprehensive' Manual Type Manual Type: Factory Service Repair Manual / Workshop Manual Language Language: Likely English (based on product description language) Format Format: Not explicitly stated, but typically digital (PDF) or printed for this era of manual. 📖 Manual Coverage Systems Covered Systems Covered: Engine overhaul and repair (1.9L), ignition system, charging system, starting system, lighting, fuel system, cooling system, exhaust system, clutch, gearbox, driveshaft, rear axle differential, braking system (hydraulic, drum/disc), steering linkage, front and rear suspension, chassis structure, body panel repair, interior trim, accessories operation and repair. Procedures Included Procedures Included: Routine maintenance, scheduled servicing, troubleshooting diagnostic charts, component removal and installation, adjustment procedures, overhaul instructions, torque specifications, electrical wiring diagrams, component testing, repair methods, lubrication specifications. Technical Depth Technical Depth: Comprehensive factory-level detail suitable for professional technicians, covering everything from basic fluid changes to complete engine and transmission rebuilds, electrical system diagnostics, and body repair. 📊 Manual Specifications File Format File Format: Assumed PDF for digital versions, original print for physical. Quality of digital reproduction can vary. Print Quality Print Quality: Original factory print quality. Digital reproductions aim to match or exceed this clarity. Binding Type Binding Type: Typically a sturdy perfect-bound or spiral-bound format for ease of use in a workshop. Paper Type Paper Type: Original manuals often printed on durable, sometimes coated paper to withstand workshop environments. ⚙️ Engine Specifications Primary Engine Primary Engine: Opel CIH (Cam in Head) Inline-4, 1.9 Liters (1897 cc) Performance Engine Performance 1.9L: Approximately 90-100 HP (DIN) and 150-155 Nm (110-114 lb-ft) of torque, depending on specific carburetion and tuning (e.g., single or twin Zenith carburetors, or Bosch L-Jetronic fuel injection on GT/E variants). Fuel System Fuel System 1.9L: Carbureted (single or twin Zenith 36/40 INAT or similar) or Bosch L-Jetronic fuel injection on performance variants. Bore Stroke Bore Stroke 1.9L: Bore: 84.8 mm (3.34 in), Stroke: 85.0 mm (3.35 in) Compression Ratio Compression Ratio 1.9L: Typically 8.5:1 or 9.2:1 for standard and higher-performance versions, respectively. Engine Oil Type Engine Oil Type: API SF or SG rated, SAE 10W-30 or 10W-40 (refer to manual for precise OEM specifications). Engine Oil Capacity Engine Oil Capacity: Approximately 4.5 liters (4.8 US quarts) with filter change. 🔧 Transmission Standard Standard Transmission: 4-speed manual transmission. Optional Optional Transmission: 3-speed automatic transmission (e.g., GM's Turbo Hydra-Matic 350 or similar variant). Features Transmission Features: Rear-wheel drive layout, robust construction for its era. Transmission Fluid Type Transmission Fluid Type: Manual: GL-4 Hypoid gear oil, SAE 80W/90. Automatic: DEXRON®-II or equivalent. Transmission Fluid Capacity Transmission Fluid Capacity: Manual: ~1.2 liters. Automatic: ~3.0 liters (fill) 📐 Dimensions Exterior Wheelbase: Manta: ~2,440 mm (96.1 in). GT: ~2,020 mm (79.5 in) Length: Manta: ~4,070 mm (160.2 in). GT: ~3,800 mm (149.6 in) Width: Manta: ~1,620 mm (63.8 in). GT: ~1,590 mm (62.6 in) Height: Manta: ~1,350 mm (53.1 in). GT: ~1,220 mm (48.0 in) Weights Curb Weight: Manta: ~1000-1150 kg (2200-2535 lbs). GT: ~850-950 kg (1870-2095 lbs) Gross Vehicle Weight Rating: Not specified, but typically around 1400-1500 kg for Manta. Fuel Tank Capacity: Approximately 46 liters (12.2 US gallons). 🛡️ Safety Features Ratings Safety Ratings: No formal crash test ratings from modern agencies exist for these vehicles. Safety features were basic by today's standards. Active Features Active Features: Front disc brakes, rear drum brakes, optional power-assisted brakes on some models. Passive Features Passive Features: Seat belts (lap belts standard, optional inertia reel), reinforced passenger cell (for its era), padded dashboard. Braking System Specs Front Brakes: Ventilated discs (e.g., 256 mm) on most 1.9L models. GT models often had larger discs. Rear Brakes: Drum brakes. Steering Type Steering Type: Recirculating ball steering. Optional power...