BMW S58 Owner's Handbook Manual page 12

S58￿Engine
1.￿Introduction
Index

5

6
7
8
1.2.2.￿Comparison￿of￿S58￿engine￿and￿B58TU￿engine
Engine￿mechanics
Component
Cylinder￿head￿cover
Cylinder￿head
Cylinder￿head
gasket
Crankcase
Crankshaft￿with
bearings
Connecting￿rod
6
Explanation
Crankshaft￿drive
Sump￿gasket
Oil￿supply
Oil￿sump
1
New






Comment
2
Same
Adapted￿to￿two￿high￿pressure￿pumps
Adapted￿crankcase￿ventilation
Mounting￿for￿the￿two￿high￿pressure
pumps
B58￿split-cooling￿concept￿discontinued
Water￿chamber￿cross-sections￿enlarged
Crankcase￿ventilation￿gas￿ducting
Revised￿cylinder￿head￿gasket￿due￿to
higher￿combustion￿pressure￿of￿S58
engine
Adapted￿for￿bi-turbo
No￿attachment￿for￿heat￿management
module
Additional￿oil￿ducts￿for￿switchable￿piston
cooling
Additional￿oil￿ducts
Stroke￿increased￿to￿90 mm
Adaptation￿to￿the￿high-speed￿concept￿of
main￿bearings￿and￿crankshaft
Connecting￿rod￿bore￿hole￿in￿small
connecting￿rod￿eye
Lead-free￿connecting￿rod￿bearing￿shells
Adopted￿from￿S63B44T4￿engine