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BMW M54B30 Engine (Design, Specs, Reliability)

The BMW M54B30 engine is an inline six cylinder naturally aspirated petrol engine producing 231 hp and 300 nm of torque.


  • M54 - Engine Family

  • B - Gasoline

  • 30 - 3.0 Liter Displacement


It was developed in 2000 on the foundation of the M52TUB28 and was originally fitted in restyled BMW E46 and BMW E39 models.


The cylinder block, like that of the M52B28TU engine, is built of aluminium alloy, but with cast iron liners. BMW introduced the world to the N52 engine line in 2004, which gradually replaced the M54 line. The M54B30 engine was phased out of manufacturing in 2006.


However, in 2006, one of the most successful BMW N54 turbocharged engines was produced on the basis of the M54, and it was widely fitted in vehicles with the 35i index.


M54B30

Specs

  • Production years: 2000-2006 Munich Plant

  • Displacement: 2979 cc

  • Fuel system: injector

  • Power output: 231 hp

  • Torque output: 300 nm

  • Block: aluminum R6

  • Cylinder head: aluminum 24v

  • Bore: 84 mm

  • Stroke: 89.6 mm

  • Compression ratio: 10.2:1

  • Features: DISA

  • Hydraulic lifters: yes

  • Timing drive: chain

  • Phase regulator: double VANOS

  • Turbocharging: no

  • Recommended engine oil: 5W-30

  • Engine oil capacity: 6.5 litres

  • Fuel type: Petrol

  • Euro standards: EURO 3/4

  • Fuel consumption, L/100 km (for E60 530i): city 14, highway 7, combined 9.8

  • Engine lifespan: ~330 000 km

  • Engine weight: 130 kg


Problems & Reliability

Some issues present with these engines, such weak camshaft status sensors, weak threads for attaching the cylinder block, sensitivity to oil quality, and a short-lived thermostat are all concerns.


Nonetheless, the M54 outperforms the M52 in terms of dependability. As a result, the M54B30 is dependable and sturdy.


Excessive Oil Consumption

The reason behind this is because the piston rings are continually degrading. The solution to the issue is to completely replace them. M52TUB28 rings will suffice. You should also inspect the crankcase ventilation valve which may be another source of oil consumption.


Overheating

First and foremost, inspect the radiator for debris. Air might have also collected in the cooling system. The thermostat and pump may be inoperative. The radiator cap should be examined as well.


Misfiring

In the TU-modification, the breakdown is the same as on the M52. The cause is blocking of the hydraulic lifters. It is necessary to replace old ones with new ones.


Oil Warning Light

The reason is usually an oil pump.


Engine Applications

Model

Production Years

BMW 330i, 330xi, 330Ci (E46)

​2000-2006

BMW 530i (E39)

2000-2004

BMW Z3 3.0i (E36/7 )

2000-2002

​BMW 530i (E60)

2003-2005

BMW Z4 3.0i (E85)

2002-2005

BMW X3 3.0i (E83)

2003-2006

​BMW X5 3.0i (E53)

2000-2006

BMW 730i, 730Li (E65/E66)

2002–2005

Wiesmann MF 30

2000-2002


Images


BMW M54B30 engine

M54B30 engine swap

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