Porsche 928 Workshop Manual page 96

928
Engine/Crankcase
10
l
ENGINE TORQUE SPECIFICATIONS
Location
Main bearing
Crankcase with "X" next
to case number and all
crankcases with closed
main bearing bushing,
bearing 1
Main bearing
Crankcase with "X" next
to case number and all
crankcases with closed
main bearing bushing,
bearing 1
Oil pump
Conrad nut with smooth
bearing surface
Conrod nut with ribbed
bearing surface
Cylinder head
Tightening Specifications
3 steps: 1st step
2nd step
3rd step
2 step5: 1st step
2nd step
2 steps: 1st step
2nd step
A) Pre-loading cylinder
head gasket
1st Step
2nd step
3rd step
6) Gasket left in preloaded
condition 30 minutes
C) Final tightening:
Nuts unscrewed one
after the other by
l/4 turn and then
tightened, See note
onpage15.7
New tightening instructions
for changed cylinder head
gasket:
Part No. 928.104.361.02
Cyl. 1 - 4
Part No. 928.104.362.02
Cyl. 5 - 8
Part No. 928.104.371.09
Cyl. 1 - 4
Torque
Nm Iftlb)
20 (141
40 (29)
60 + 5 (43 + 3.6)
75 + 5 (54 + 3.6)
20 (14)
40 + 5 (29 + 3.61
50 + 5 136 + 3.61
15 111)
20 (14)
58 + 5 (42 + 3.61
75 (541
20 (14)
50 (361
85 161)
85 (611
Threads
M 12 x 1.5
M 10
M8
M 10 x 1.25
M 10 x 1.25
M 12x 1.5
Printed in Germany
XII,
1986
Engine Torque Specifications 10-03