BMW 3: Connecting rod - Crankshaft drive
Connecting rod
- Piston
- Area transferring the force
- Wrist pin
- Connecting rod bearing with shaped bore hole
- Connecting rod
- Connecting rod bearing (B46TU only)
- Small connecting rod eye (trapezoidal shape)
- Large connecting rod eye (cracked)
- Connecting rod bolts of the connecting rod bearing cap
- Connecting rod bearing shell of the connecting rod bearing cap
- Connecting rod bearing shell of the connecting rod (IROX-coated)
The drop-forged cracked connecting rods with IROX coating are known from the
B38/B46 engines.
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Detailed magnification of the IROX coating
IROX-coated bearing shell
Oil film
IROX coating
Bearing shell
Binding resin
Hard particle
Solid lubricant
The IROX coating is applied to a conventi
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-vacu
Chain tensioner
Tensioning rail
Sealing sleeve
Chain tensioner with screw thread
Due to the cylinder head manufacturing process, the chain tensioner now has a
sealing sleeve with a
height of 12
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General information
The technical data and specifications in the
Owner's Manual are used as guidance values.
The vehicle-specific data can deviate from this,
for instance due to the selected special equipment,
country version or country-specific measurement
method. Detailed values can be found in
t
Countries in which ConnectedDrive is not available:
The name that was assigned when the driver
profile was set up can be changed via iDrive:
1. "CAR".
2. "Driver profiles".
As an alternative for Steps 1 and 2, the profile
image can be tapped in the top status bar.
3. Select driver profile.
4. "S