1987 Porsche 911 Repair Manual

The 1987 Porsche 911 is a classic air-cooled sports car featuring a 3.2-liter flat-six engine, rear-wheel drive, and iconic 911 styling. This repair manual covers essential maintenance, troubleshooting, and repair procedures for the 1987 model year, including engine systems, transmission, brakes, suspension, electrical systems, and bodywork. Below are key sections for specifications, maintenance schedules, repair procedures, troubleshooting, and technical data.

Vehicle Specifications

Key specifications for the 1987 Porsche 911.

Specification	Description
Engine Type	3.2L Air-cooled flat-six
Horsepower	217 hp @ 5900 rpm
Torque	195 lb-ft @ 4800 rpm
Transmission	5-speed manual (G50)
Brakes	Ventilated discs front and rear
Suspension	Independent front and rear
Fuel System	Bosch K-Jetronic fuel injection
Weight	1215 kg (2680 lbs)
Top Speed	149 mph
0-60 mph	5.4 seconds

Maintenance Schedule

Recommended maintenance intervals for optimal performance.

1. Oil Change: Every 7,500 miles or 12 months
2. Spark Plugs: Replace every 15,000 miles
3. Air Filter: Inspect every 15,000 miles, replace as needed
4. Brake Fluid: Change every 2 years
5. Timing Belt: Replace every 60,000 miles
6. Valve Adjustment: Every 15,000 miles

WARNING! Use only Porsche-approved fluids and parts. Follow torque specifications precisely.

Engine Repair

Procedures for engine maintenance and repair.

1. Oil Change: Drain oil, replace filter, refill with 10W-40 synthetic
2. Spark Plug Replacement: Remove old plugs, gap new plugs to 0.7mm
3. Valve Adjustment: Set clearance to 0.10mm intake, 0.15mm exhaust
4. Fuel Injection Service: Clean injectors, check fuel pressure
5. Compression Test: Should read 150-175 psi across all cylinders

CAUTION! Engine components are hot after operation. Allow to cool before servicing.

Transmission & Drivetrain

• Transmission Fluid: Change every 30,000 miles
• Clutch Adjustment: Check free play regularly
• CV Joints: Inspect for wear and tear
• Differential: Check fluid level during service
• Shift Linkage: Lubricate periodically

Brake System

Brake maintenance and repair procedures.

Front Brakes: Pad replacement, rotor inspection, caliper service

Rear Brakes: Pad replacement, parking brake adjustment

Brake Bleeding: Use pressure bleeder, follow proper sequence

Master Cylinder: Check for leaks, replace if necessary

Suspension & Steering

Suspension components and steering system maintenance.

1. Strut Replacement: Remove old struts, install new with proper alignment
2. Bushings: Inspect and replace worn bushings
3. Ball Joints: Check for play, replace if loose
4. Alignment: Set to factory specifications
5. Power Steering: Check fluid level, inspect for leaks

Tip: Always perform wheel alignment after suspension work.

Electrical System

Electrical system diagnosis and repair.

1. Battery: Check voltage, clean terminals
2. Alternator: Test output, replace if below specification
3. Starter: Check engagement, replace if faulty
4. Lights: Inspect all exterior and interior lights
5. Fuses: Check and replace blown fuses
6. Wiring: Inspect for damage or corrosion

WARNING! Disconnect battery before working on electrical system.

Body & Interior

Bodywork and interior maintenance procedures.

Paint Care: Wash regularly, wax every 3 months

Rust Prevention: Inspect undercarriage, treat rust spots

Upholstery: Clean leather with approved products

Glass: Replace windshield if cracked

Trim: Secure loose trim pieces

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Battery, starter, fuel system	Check battery voltage, fuel pressure, spark
Poor performance	Fuel filter, spark plugs	Replace fuel filter, check spark plugs
Brake vibration	Warped rotors	Resurface or replace brake rotors
Electrical issues	Bad ground, alternator	Check ground connections, test alternator
Transmission noise	Low fluid, worn gears	Check fluid level, inspect transmission

Technical Data

Technical specifications and torque values.

• Engine Oil Capacity: 10.5 quarts
• Coolant Capacity: Air-cooled (no coolant)
• Spark Plug Gap: 0.7 mm
• Wheel Torque: 90 ft-lbs
• Tire Pressure: 29 psi front, 36 psi rear
• Fuel Tank Capacity: 21.1 gallons

Wiring Diagrams

Complete electrical wiring diagrams for all systems.

Engine Management: Bosch K-Jetronic system wiring

Lighting: Headlight, taillight, and signal circuits

Instrument Cluster: Gauge and warning light wiring

Accessories: Power windows, sunroof, audio system

Service: For technical support contact Porsche Classic Center