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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SEE MORE:
G30 WiFi hotspot
The BMW Internet optional equipment (OE 6AR) is no longer offered in the G30.
The WiFi hotspot (OE 6WD) provides the capability of using the internet in the
vehicle.
The hotspot in the vehicle can be used for a fee once registered. The WiFi
antenna is installed in the
TCB2.
Pro
Warning
Loose objects or devices with a cable connection
to the vehicle, for instance mobile phones,
can be thrown into the car's interior while driving,
for instance in the event of an accident or
during braking and evasive maneuvers. There is
a risk of injury. Secure loose objects or devices
with