🏷️ Basic Information Identification Make: Opel Model: 1900 Manta / TG Models Year: 1973 Codes Chassis Code: Manta A (1970-1975) 👋 Introduction Market Position Positioning: A comprehensive resource for owners and mechanics of the 1973 Opel 1900 Manta and TG models, aimed at enabling DIY maintenance and repairs. Competitive Analysis Value Proposition: Provides significant cost savings and empowers users with detailed, accurate information, surpassing generic repair guides. Key Features Content Quality: Easy-to-read text, top-quality diagrams and instructions. Benefit To Owner: Saves time and money, builds confidence in performing repairs and maintenance. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Page Count Estimated Page Count: Extensive (specific count not provided, but implied to be comprehensive for a factory service manual) Manual Type Type: Factory Original Service Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine overhaul, internal components, timing, cooling, lubrication Fuel System: Carburetor adjustment and overhaul, fuel pump, fuel lines Ignition System: Distributor, spark plugs, ignition timing, coil Electrical System: Wiring diagrams, starter, alternator, battery, lighting, instrumentation Transmission Manual: Clutch, gearbox overhaul, maintenance, shifting mechanisms Transmission Automatic: If TG models included automatic transmission, coverage is implied Drivetrain: Propeller shaft, universal joints, rear axle, differential service Suspension: Front and rear suspension components, springs, shock absorbers, bushings Steering: Steering gear, linkage, alignment specifications Brakes: Front and rear brake systems (disc/drum), hydraulic components, servicing Body And Chassis: Body panels, doors, latches, glass, bumpers, interior trim Accessories: Heater, ventilation, radio, wipers, lighting accessories Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication, tune-ups Diagnostics And Troubleshooting: Fault finding, symptom analysis, diagnostic charts Repair And Overhaul: Component disassembly, reassembly, and repair procedures Adjustment Procedures: Carburetor, ignition timing, clutch, brakes, suspension alignment Wiring Diagrams: Comprehensive electrical schematics Technical Depth Depth: Full Factory Workshop Manual - Covering basic maintenance to complete engine and transmission rebuilds 📊 Manual Specifications File Format Format: PDF Print Quality Printability: All pages printable Binding Type Binding: Not applicable (digital PDF) Paper Type Paper Type: Not applicable (digital PDF) Compatibility Operating Systems: Compatible with all versions of Windows & Mac Requirements Software Required: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Code: Kadett/Manta 1.9L OHV (likely a variant of the CIH family) Displacement: 1897 cc (1.9 Liters) Performance Horsepower: Approximately 90-100 PS (Gross DIN) depending on tuning and market Torque: Approximately 150-160 Nm (Gross DIN) Fuel System Carburetor: Likely a Solex 32/32 DIDTA twin-choke carburetor or similar Ignition System Ignition Type: Breaker point ignition with vacuum advance Cooling System Cooling Type: Water-cooled, pressurized system Engine Block Block Material: Cast Iron 🔧 Transmission Standard Transmission Type: 4-speed manual gearbox (standard on most Manta models) Optional Transmission Type: 3-speed automatic transmission (likely optional on TG models or specific Manta trims) Features Clutch Type: Dry single-plate diaphragm spring clutch Gear Ratios Manual 4 Speed: Specific ratios would be detailed in the manual, typically around 3.10:1 for 1st gear and 0.87:1 for 4th gear. 📐 Dimensions Exterior Length: Manta A: Approx. 4140 mm (163 in) Width: Manta A: Approx. 1630 mm (64.2 in) Height: Manta A: Approx. 1340 mm (52.8 in) Weights Curb Weight: Approx. 950-1050 kg (2090-2315 lbs) depending on specification Wheelbase Wheelbase: Manta A: Approx. 2430 mm (95.7 in) Wheels And Tires Bolt Pattern: 4 x 140 mm Standard Tire Size: 165 SR 14 or 175/70 SR 14 🛡️ Safety Features Ratings Crash Testing: No official NCAP ratings available for this era; safety features reflect 1970s standards. Active Features Braking System: Front discs, rear drums (standard); brake fluid type DOT 3 or DOT 4 Passive Features Seatbelts: Front seatbelts (likely lap belts or optional three-point belts) Steering Column: Collapsible steering column (standard safety feature of the era) 💡 Technology Features Infotainment Audio System: Factory fitted AM/FM radio with optional stereo. Aftermarket upgrades common. Driver Assistance Assist Features: None typically found in this era; features are purely mechanical. Connectivity Connectivity Options: None 🔧 Maintenance Service Intervals Oil Change: Typically every 5,000 km (3,000 miles) or 6 months Tune Up: Spark plug replacement, ignition timing adjustment, carburetor check every 10,000-15,000 km (6,000-9,000 miles) Fluid Specifications Engine Oil: API SF/CD, SAE 20W-50 or 10W-40 (depending on climate). Capacity approx. 4.5 liters with filter. Coolant: 50/50 mix of ethylene glycol antifreeze and distilled water Brake Fluid: DOT 3 or DOT 4 Transmission Fluid Manual: GL-4 Gear Oil, SAE 80W-90 Differential Fluid: GL-5 Gear Oil, SAE 80W-90 Known Issues Rust And Corrosion: Common issue on vintage Opels, particularly wheel arches, sills, and floor pans. Requires diligent inspection and repair. Carburetor Issues: Solex carburetors can be prone to wear and require meticulous adjustment for smooth running, especially the twin-choke setups. Electrical Gremlins: Aging wiring and connectors can lead to intermittent electrical faults. Manual's wiring diagrams are crucial. Suspension Bushings: Rubber suspension bushings degrade over time, leading to sloppy handling and...