Porsche 928 GTS 1994, Owner'S Manual

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Technical Data
Engine Data
Μ 28.49/50
Number of cylinders
Bore
Stroke
Displacement
Compression ratio
SAE net-horsepower SAE J 1349
SAE net-torque SAE J 1349
Max. permissible rpm
Fuel octane rating
Spark plugs
Spark plug gap
Alternator output
Firing order
Ignition system
Fuel system
Timing gear
Belts
3.94 in./100 mm
3.38 in./85.9 mm
329.3 cu. in./5397 cm
3
10.4 : 1
345 hp/257 kW at 5700 rpm
369 ft lb/500 Nm at 4250 rpm
6800
Your engine is designed to provide optimum performance and fuel economy using unleaded
premium fuel with an octane rating of 98
RON (93 CLC or AKI). Porsche therefore
recommends the use of these fuels in your vehicle.
Porsche also recognizes that these fuels may not always be available. Be assured that your
vehicle will operate properly on unleaded premium fuels with octane numbers of
at least
95 RON (90 CLC or AKI), since the engine's "Electronic Octane™ knock control" will adapt
the ignition timing, if necessary.
Bosch WR 7 DTC
0.031 ± 0.004 in./0.80 mm ± 0.1 mm
1610W/115AAC
1-3-7-2-6-5-4-8
Electronic map-controlled ignition with knock control
AFC (Air Flow Control)
Overhead camshafts, bucket tappets with hydraulic valve play compensation, 32 valves
Alternator: Polyrib Κ 6-872; air pump 12.5 χ 925-FO toothed belt;
air conditioning pump 12.5 χ 1080; servo pump 12.5 χ 1000
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