Porsche 928 Workshop Manual page 249

15
Engine/Cylinder Head, Valve Drive 928
Camshaft USA, Canada and
Installation
Japan
Australia, Swit-
zerland, Austria
and West Germany
Worldwide
Engine type 928 S
85/86/87 models
(32-valve engines)
M 28.43
M 28.45
M 28.41
M 28.44 M 28.46
M 28.42
Right-hand camshaft
Cylinder bank l-4
Intake shaft
Exhaust shaft
928.105.291.04 928.105.291.04
928.105.291.09
928.105.293.04
928.105.293.04
928.105.293.09
Identification
code on rear end
face
291.04
293.04
291.04
293.04
291.09
293.09
Left-hand camshaft
Cylinder bank 5-8
Intake shaft
Exhaust shaft
928.105.292.04
928.105.292.04 928.105.292.09
928.105.294.02
928.105.294.02 294.08
Identification
code on rear end
face
292.04 292.04
292.09
294.02 294.02 294.08
Valve timing,
1
nnn lift, zero
play
Intake opens "CS 11"
after TDC
11"
after TDC
11"
after TDC
Intake closes "CS 50" after BDC 50" after BDC
36" after BDC
Exhaust opens "CS 30" before 8DC 30" before BDC
17' before BDC
Exhaust closes"CS 5" before TDC
5" before TDC 2" before TDC
a
15 - 124 Camshaft Installation XIII, 1986
- Printed in Germany
Overview