Technical Data - Porsche 928 1980 Owner's Manual

Technical Data

Engine Μ 28.13/14
Number of cylinders
Bore
Stroke
Displacement
Compression ratio
SAE net-horsepower SAE J 245
SAE net-torque SAE J 245
Fuel octane rating
Max. permissible
Sparkplugs
Spark plug gap
Battery capacity
Alternator output
Firing order
Ignition timing
Ignition
Fan belts
Valve clearance
76
8
3.74 in/95.0 mm
3.11 in/78.9 mm
3
272.97 cu.in/4474 c m
9:1
220 hp/1165 kW at 5500 rpm
265 ft.lb/348 Nm at 4000 rpm
Unleaded fuel only 91 RON (87 CLC rating on fuel pumps in U.S.A.)
6300 rpm
Bosch WR 8 DS; Beru RS 35
0.028-0.032 in/0.7 + 0.1 mm
12 Volts, 66 Ah; optional 88 Ah
1260W/90AAC
1 - 3 - 7 - 2 - 6 - 5 - 4 - 8
23° before TDC at 3000 rpm with distributor vacuum disconnected
Transistorized ignition system with breakerless distributor
Alternator 9.5 x 875 LA; cooling fan and air pump 12.5 x 1050 LA-FD toothed belt;
Air conditioning pump 12.5 χ 1075 LA. Servo pump 12.5 x 975 LA
Self-adjusting hydraulically operated