Introduction
This Owner's Workshop Manual provides comprehensive information for the maintenance, service, and repair of Porsche 911 models produced between 1965 and 1985, covering 2.0, 2.2, 2.4, 2.7, 3.0, and 3.2 litre engines, including both Coupé and Targa body styles. It is designed to assist both the professional mechanic and the do-it-yourself enthusiast in understanding and servicing their vehicle.
The manual contains detailed step-by-step procedures, accompanied by numerous illustrations and diagrams, to guide users through various tasks from routine maintenance to complex repairs. Adherence to the instructions within this manual will help ensure the longevity and optimal performance of your Porsche 911.
General Information and Safety
Before commencing any work on your vehicle, it is crucial to read and understand all safety warnings and precautions outlined in this manual. Always use appropriate personal protective equipment (PPE) such as safety glasses, gloves, and protective clothing. Ensure the vehicle is securely supported on jack stands before working underneath it. Disconnect the battery before working on electrical components.
Familiarize yourself with the vehicle's systems and components before attempting repairs. If you are unsure about any procedure, it is recommended to consult a qualified Porsche specialist.
Setup and Preparation
Proper preparation is key to successful maintenance and repair. This section covers essential steps before starting any work.
Vehicle Lifting and Support
Always lift the vehicle using designated jacking points. Once lifted, support the vehicle securely on sturdy jack stands. Never rely solely on a jack for support.
Tool Requirements
Ensure you have the correct tools for the job. This includes a comprehensive set of metric wrenches, sockets, screwdrivers, torque wrenches, and specialized tools as required for specific tasks. Refer to individual section requirements for detailed tool lists.
Fluid and Material Preparation
Have all necessary fluids (engine oil, transmission fluid, brake fluid, coolant) and replacement parts (filters, gaskets, spark plugs) on hand before beginning work. Use only fluids and parts that meet Porsche specifications.
Operating Principles (Engine & Transmission)
Understanding the basic operating principles of the Porsche 911's engine and transmission systems is fundamental for effective troubleshooting and maintenance.
Engine Overview
The Porsche 911 models covered in this manual feature air-cooled, flat-six (boxer) engines. These engines are known for their unique sound, compact design, and robust performance. Key components include the crankshaft, pistons, cylinders, cylinder heads, camshafts, and valve train. Fuel delivery systems vary by year and model, including carburetors, mechanical fuel injection (MFI), and later, Bosch K-Jetronic (CIS) fuel injection.
Transmission Overview
Various manual transmissions were fitted to the Porsche 911 during this period, including 4-speed, 5-speed, and later, the 915 and G50 gearboxes. These transmissions are designed for precise gear changes and efficient power transfer to the rear wheels.
Maintenance Schedule
Regular maintenance is essential for the longevity and reliability of your Porsche 911. Adhere to the recommended service intervals.
| Service Item | Interval (Miles/Kilometers) | Interval (Time) |
|---|---|---|
| Engine Oil & Filter Change | 3,000 miles / 5,000 km | Every 6 months |
| Valve Adjustment | 15,000 miles / 25,000 km | Every 2 years |
| Spark Plug Replacement | 15,000 miles / 25,000 km | Every 2 years |
| Brake Fluid Flush | N/A | Every 2 years |
| Transmission Fluid Check/Change | 30,000 miles / 50,000 km | Every 4 years |
Note: These intervals are general guidelines. Refer to the specific chapter for your model year for precise recommendations.
Troubleshooting Common Issues
This section provides guidance on diagnosing and resolving common problems encountered with Porsche 911 models.
Engine Starting Problems
- Engine cranks but won't start: Check fuel supply (pump, filter, injectors), ignition system (spark plugs, distributor, coil), and compression.
- Engine starts then stalls: Inspect idle control valve, vacuum leaks, or fuel mixture issues.
Brake System Issues
- Spongy brake pedal: Bleed the brake system to remove air, check for fluid leaks, or inspect master cylinder.
- Brakes squeal or grind: Inspect brake pads for wear, check rotors for scoring, or ensure proper caliper function.
Electrical System Faults
- Lights not working: Check bulbs, fuses, and wiring connections.
- Battery not holding charge: Test battery, alternator, and check for parasitic drains.
Technical Specifications
This section provides key technical specifications for the Porsche 911 models covered by this manual. Specific values may vary slightly by model year and engine variant.
| Category | Specification |
|---|---|
| Engine Type | Air-cooled Flat-Six (Boxer) |
| Displacement Range | 2.0L to 3.2L |
| Fuel Type | Unleaded Gasoline (Premium Recommended) |
| Transmission | Manual (4-speed, 5-speed) |
| Brake System | Disc brakes all around |
| Electrical System | 12-volt, negative ground |
For detailed torque specifications, fluid capacities, and component dimensions, refer to the relevant chapters within the manual.
Visual Aids and Examples
This section provides visual references to assist with identification and understanding of components and procedures.
Figure 1.1: Front cover of the Porsche 911 Owner's Workshop Manual. This image displays the title, covered models (2.0, 2.2, 2.4, 2.7, 3.0 & 3.2 litre), years (1965 to 1985), and body types (Coupé & Targa). A detailed cutaway illustration of a Porsche 911 is prominently featured, highlighting internal components.
Figure 1.2: Example pages from a Haynes manual. This image illustrates the publisher's approach to providing DIY-friendly techniques, including step-by-step instructions with clear photographs. It also highlights the inclusion of fault-finding sections to assist in diagnosing issues.
Warranty and Support
This manual is a publication by Haynes Publishing Group. For inquiries regarding the content of this manual or for technical support related to the publication itself, please refer to the publisher's contact information typically found on the inside cover or their official website.
As this is a workshop manual, it does not come with a product warranty for the vehicle itself. Vehicle-specific warranty information should be obtained from Porsche or an authorized Porsche dealership.
For additional resources and community support, consider joining Porsche owner forums or local enthusiast groups. These communities often provide valuable insights and assistance for maintaining classic Porsche 911 models.
