Positioning:
The definitive guide for owners and technicians working on the iconic 1980 Porsche 911, a benchmark sports car of its era.
Alternatives:
While other aftermarket manuals may exist, this factory-issued document provides the most accurate and complete information directly from the manufacturer.
Ease Of Use:
Designed for both professional mechanics and dedicated DIY enthusiasts with clear, sequential instructions and diagrams.
Completeness:
Covers every system and procedure necessary for maintaining and repairing the 1980 911.
Visuals:
Typically includes detailed line drawings, exploded views, and schematic diagrams.
Engine:
3.0L Flat-6 (Naturally Aspirated and Turbocharged), Fuel Injection (K-Jetronic), Ignition System, Cooling System, Lubrication System, Exhaust System
Transmission:
915 5-Speed Manual Transmission, Clutch Assembly, Drivetrain, Limited Slip Differential (Optional)
Brakes:
Disc Brakes (Front and Rear), Parking Brake, Brake Fluid Specifications
Suspension:
Front Torsion Bar Suspension, Rear Torsion Bar Suspension, Shock Absorbers, Anti-Roll Bars, Bushings, Wheel Alignment Specifications
Steering:
Rack and Pinion Steering System, Steering Column, Steering Wheel
Electrical:
12V Electrical System, Battery, Alternator, Starter Motor, Lighting System, Gauges and Instruments, Wiper System, Horn, Radio Wiring, Fuses and Relays
Body:
Body Structure, Doors, Hood, Trunk, Bumpers, Fenders, Glass, Seals, Exterior Trim, Interior Trim, Seats, Seat Belts
Heating And Air Conditioning:
HVAC System Operation, Components, and Service (if equipped)
Maintenance:
Oil Changes, Filter Replacements, Spark Plug Service, Ignition Timing Adjustment, Fuel Filter Replacement, Air Filter Service, Brake Pad Replacement, Tire Rotation
Repair:
Engine Overhaul, Transmission Rebuild, Clutch Replacement, Brake System Repair, Suspension Component Replacement, Steering System Overhaul, Electrical Component Diagnosis and Repair, Body Panel Repair and Replacement
Disassembly And Assembly:
Detailed procedures for component removal, disassembly, cleaning, inspection, assembly, and reinstallation
Troubleshooting:
Diagnostic flowcharts, symptom-based troubleshooting guides, and common problem solutions
Depth:
Comprehensive from basic checks to full engine and transmission rebuilds, including torque specifications, clearances, and wear limits
Displacement:
3.0 Liters (2994 cc)
Configuration:
Naturally Aspirated Flat-6 (Boxer)
Bore X Stroke:
95.0 mm x 70.4 mm
Compression Ratio:
8.5:1 (Carrera), 7.5:1 (Turbo)
Valvetrain:
SOHC, 2 Valves per Cylinder
Horsepower Carrerra:
200 hp @ 5900 rpm
Torque Carrerra:
188 lb-ft @ 4000 rpm
Horsepower Turbo:
300 hp @ 5500 rpm
Torque Turbo:
305 lb-ft @ 3600 rpm
Induction System:
Bosch K-Jetronic Continuous Fuel Injection
Fuel Type:
Unleaded Gasoline, Minimum 91 Octane (RON+MON)/2 (e.g., 87 AKI)
Turbocharger:
Garrett AiResearch AiR-26 Turbocharger (Turbo Model)
Intercooler:
Air-to-Air Intercooler (Turbo Model)
Crash Test Data:
Limited official crash test data available for this era, but known for robust construction.
Brakes:
Four-wheel disc brakes, vented front rotors, solid rear rotors.
Seat Belts:
Three-point inertia-reel seat belts
Body Structure:
Integrated roll bar and reinforced chassis structure.
Fuel Tank:
Protective fuel tank enclosure.
Oil Change:
Every 3,000-5,000 miles or annually, whichever comes first (depending on usage and oil type)
Major Service:
Typically recommended at 30,000-60,000 mile intervals for comprehensive checks and adjustments.
Engine Oil:
API SF/SG or higher, viscosity typically 20W-50 or 10W-40 depending on climate (refer to manual for specifics)
Brake Fluid:
DOT 3 or DOT 4
Coolant:
Proprietary Porsche coolant or an equivalent with ethylene glycol and corrosion inhibitors.
Fuel System:
K-Jetronic system can require precise adjustment; injector seals and air flow meter can be sources of issues.
Engine Seals:
Age-related degradation of engine seals (e.g., crankshaft seals, valve cover gaskets) can lead to oil leaks.
Transmission Synchros:
Wear in the 915 transmission's synchros can lead to difficulty shifting, particularly into second gear.
Fuel Pump:
Early fuel pumps can be a failure point, especially with age.
Legacy:
Porsche's unwavering commitment to performance, engineering excellence, and motorsport heritage.
Era:
The 1980 911 represents the G-Series evolution, characterized by improved safety features and the introduction of the potent 930 Turbo model.
Design Language:
The iconic 'long hood, short deck' silhouette refined for aerodynamic efficiency and safety regulations.
Manufacturing Location:
Stuttgart-Zuffenhausen, Germany
Production Years:
G-Series: 1974-1989 (1980 falls within this period)
