Porsche 928 Workshop Manual page 93

928
Engine / Crankcase
10
a
TOLERANCES. AND WEAR LlMITS
Cooling System
Coolanr thermostat
Radiaror Cap
High pressure valve
LOW pressure valve
Oil Circuit
Oil consumprion
Oil pressure at 80' C oil
temperarue and at 5000 rpm
Oil dipstick
Upper mark
Lower mark
Oil pump
Clearance
Valve Timing
Camshaft bore
Inside dia.
Camshaft
Bucket rappet bore
Bucket tappet
Camshaft
Opening temperarure
Opening pressure
Opening pressure
ltr/lOOO km
Oil volume
Oil volume
Axial play
Radial play
Diamerer
Axial play
Inside dia.
Diameter
Runour
Cylinder Head and Valves
Bearing surface
Valve sear:
Intake
Exhausr
Make
Exhaust
Ourer correcrion angle
Inner correction angle
Valve guides:
Intake and exhaust
Valve stem:
lnrake
Exhaurt
Disrorrion
,Widrh
Width
seat angle
seat angle
lnside dia.
Diameter
Diameter
When Installed
(new)
81 - &so c
0.9 - 1.15 bar
0. 07 - 0.12 bar
5 bar
1. 5 1tr
6. 0 111
0.080 - 0.120
0.060 0.088
60. 5
+ 0.03
-0
60.5 - '. O3
- 0.045
0.10 - 0.18
38
+ 0.010
+ 0. 038
38 - 0.018
- 0.034
0.02
1.1
2. 0
450
4s"
300
600
9 + 0.015
8.97 0.012
8.95 - 0.012
Wear Limit
ca. 1. 5
max. 0.08
Printed inGerma"y - II. 1916
Tolerances
and Wear
Limits 10 - 01