Porsche 928 Workshop Manual page 36

General
928 S
a
Camshaft
Camshaft drive
Cylinder head
Valve arrangement
Valve timing
Timing (1 mm lift, zero valve
clearance)
Valve clearance
Engine Cooling
Engine Lubrication
Oil filter
Oil pressure at 5,000 rpm
Oil pressure indication
Oil consumption
Exhaust System
Emission Control
Heating
Fuel System
Fuel supply
l/1000 km
Cast steel, runs in camshaft housing
without bearing shells
Toothed belt
Light alloy
1 intake, 1 exhaust, overhead,
in-line
By overhead camshafts and hydraulic
cam followers
Intake opens 6" ATDC (1 lo ATDC)
Intake closes
54' ABDC (46O ABDC)
Exhaust opens 43" BBDC (25" BBDC)
Exhaust closes 4" BTDC (2" ATDC)
Automatic hydraulic adjustment
Closed cooling system, mechanical fan
with viscous coupling a
(additional series connected electric
fan and therm0 switch for cars
with air conditioner)
Pressure lubricating system with sickle
tvw
pump
Full flow
Approx. 5 bar at 80 to 100 "C/176 to
212 OF oil temperature
Indicator lamp and pressure gauge
up to 1.5
Twin pipes entire length; primary,
center and final mufflers
(twin pipes up to catalytic converter,
then single pipe in and out of center
a
muffler, twin pipes in final muffler)
(USA, oxygen sensor with 3-way
catalytic converter and secondary air
injection)
Warm water heater with heat
exchanger and blower
LH-Jetronic IL-Jetronic)
1 electric delivery pump
0.22
Technical Data
Printed in Germany