BMW 5 Series: Crankcase
Honing process

Honing process "old/new"
- Previous manufacturing process of internal cylindrical honing
- New manufacturing process of form honing
The cylindrical bore hole of a combustion engine becomes deformed during the
operating condition
by thermal loads. Form honing allows this deformation to be achieved in
production, so that there is an
almost cylindrical shape in the operating condition. This has a positive effect
on the emissions quality,
oil and fuel consumption, as well as output and wear.
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Features:
Chain drive at the side of the engine emitting the forces
Single-part chain drive for driving the camshafts
Single sleeve-type chain 8 mm
Electric motor of the combined oil-vacuum
Comparison between chain track of B58 engine and B58TU engine
Chain track, two-part timing chain drive B58 engine
Chain track, single-part timing chain drive B58TU engine
6-cylinder engine
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Safety information
Warning
Unsuitable containers in the cup holders may
damage the cup holders or be thrown about
the car's interior in the event of an accident, an
evasive maneuver, or forceful braking. Spilled
liquids can distract from the traffic conditions
and lead to an accident. Hot drinks can
General information
You can switch between calls or connect two
calls to a single conference call. These functions
must be supported by the mobile phone and
service provider.
Accepting a call while speaking to
another party
If a second call comes in during an ongoing call,
a call waiting signal soun