Technical data (BMW 3 Series E46)

General information

Engine codes:

• Engine 2171 cm³ — M54 B22
• Engine 2494 cm³ — M52TU B25
• Engine 2494 cm³ — M54 B25
• Engine 2793 cm³ — M52TU B28
• Engine 2979 cm³ — M54 B30

Cylinder diameter:

• Engine M54 822 - 80.00 mm
• Other engines - 84.00 mm

Piston stroke:

• Engine M54 B22 - 72.00 mm
• Engine M52TU B25 - 75.00 mm
• Engine M54 B25 - 75.00 mm
• Engine M52TU B28 - 84.00 mm
• Engine M54 B30 - 89.60 mm

Maximum engine power:

• Engine M54 B22 - 125 kW at 6100 rpm
• Engine M52TU B25 - 125 kW at 5500 rpm
• Engine M54 B25 - 141 kW at 6000 rpm
• Engine M52TU B28 - 142 kW at 5500 rpm
• Engine M54 B30 - 170 kW at 5900 rpm

Maximum engine torque:

• Engine M54 B22 - 210 Nm at 3500 rpm
• Engine M52TU B25 - 245 Nm at 3500 rpm
• Engine M54 B25 - 245 Nm at 3500 rpm
• Engine M52TU B28 - 280 Nm at 3500 rpm
• Engine M54 B30 - 300 Nm at 3500 rpm

Direction of rotation of the engine - Clockwise (if you look at the engine from the front)

Position of cylinder #1 - From the camshaft drive chain side

The firing order of the cylinders is 1-5-3-6-2-4

Compression ratio:

• Engine M54 B22 - 10.8
• Engine M52TU B25 - 10.5
• Engine M54 B25 - 10.5
• Engine M52TU B28 - 10.2
• Engine M54 B30 - 10.2

Minimum compression pressure - 10.0-11.0 bar

Camshafts

Axial clearance - 0.150...0.330 mm

Lubrication system

Minimum idle pressure - 0.5 bar

Setting of the pressure reducing valve - 4.0 bar

Oil pump clearances:

• Between the pump body and the outer rotor - 0.100-0.176 mm
• Axial clearance of the inner rotor - 0.040-0.090 mm
• Axial clearance of the outer rotor - 0.040-0.090 mm

You can read the original on the website: BMWman.ru