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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Concept
The shift paddles on the steering wheel allow
you to shift gears quickly while keeping both
hands on the steering wheel.
General information
Shifting
The vehicle only shifts at suitable engine and
road speeds.
Short-term manual mode
In selector lever position D, actuating a shift paddle
swit
General information
Moving parts need to begin working together
smoothly.
The following instructions will help you to achieve
a long vehicle life and good efficiency.
During break-in, do not use the Launch Control.
Safety information
Warning
Due to new parts and components, safety and
driver assis