Porsche 928 Workshop Manual page 133

928
Englne, Crankshaft, Pistons
13
Assembly note
On crankcases that have an "X" embossed
next to the housing number and on crank-
cases with a closed main-bearing bushing
(bearing l), the specfied tightening torque of
the studs has been modified.
As of Model Year '85, the matching number
was extended to four digits, and the "X
embossed ahead of the number was there-
fore deleted.
Tlghtenlng sequence - tlghtenlng torque
lQ\
,
?
Number l...lO in 3 steps:
M 12 x 1.5 thread
1st step 30 Nm (22 Alb.)
2nd step 55 Nm (41 ftlb.)
3rd step 75 + 5 Nm (55 + 4 ftlb.)
Number ii -22 in 2 steps:
M 10 thread
1st step 20 Nm (15 ftlb.)
2nd step 50 + 5 Nm (37 + 4 ftlb.)
Note
As of Model Year '92, hexagon head bolts are
used to assemble the two crankcase sections,
Assembling upper and lower crankcase sectlons
Printed in Germany - XXXI, 1993
13-10a