Porsche 928 Workshop Manual page 21

General
928
Camshaft Cast steel, runs in camshait housing without
bearing shells
Camshaft drive
Cylinder head
va1vc arrangement
Valve train
Toothcd belt and tensioning roller
Aluminum
I intake, 1 exhaust. overhead, in-line
By overhead camshaft qd hydraulic cam
followers
Timing (1 mm lift, zero
valve clearance)
1nt. opens
1nt.
closes
Exh. opens
Exh. closes
8' ATDC
55O ABDC
3x0 XBDC
Z" BTDC
Valve clearance Automatic hydraulic adjustment
Engine Cooling Closed cooling system. mechanical
fan with viscous coupling (electric
fan and thermo switch for air
conditioning)
Engine Lubrication
Oil filter
Oil pressure at 5000 rpm
Oil pressure indication
Indicator lamp and pressurr gage
Oil consumption
l/1000 km
Q/800 mi.
Approx. 1.5
Exhaust System
Emission control
Heating
Fuel System
Fuel supply
Pressure lubricating system with sickle
type pump
Full flax
Approx. 5 bar at 80 to 100' C/I% to 212O F
oil temperatuie
Double pipes up to catalytic converter.
intermediate aud main mufflers
EGR. air pump
Warm water heater with heat exchanger
and blower
CIS (continuous) fuel injection
2 elec. delivery pumps. connected in
series
0.4 Technical Data. General
Printed in Germany