330i_engineThe BMW M54 is a straight-6 DOHC piston engine which replaced the M52 and was produced from 2000-2006. Compared with its M52 predecessor, the M54 features electronic throttle control.The M54 uses an aluminium block and aluminium cylinder head with cast iron cylinder liners and like the technical updates variants of the M52, the M54 features variable valve timing for intake and exhaust valves.

The E46 M3 is powered by the S54 engine series, which is an evolution of the S50B32, itself being based on the M50. It still features an iron block as opposed to the aluminum M54.

Models

Engine Displacement Power Torque Redline Stroke Bore Comp.
M54B22 2,171 cc (132 cu in) 125 kW (168 hp) @ 6100 rpm 210 N·m (155 lb·ft) @ 3500 6500 72.0 mm (2.83 in) 80 mm (3.1 in) 10.8:1
M54B25 2,494 cc (152 cu in) 135 kW (181 hp) @ 6000 rpm 237 N·m (175 lb·ft) @ 3500 6500 75.0 mm (2.95 in) 84 mm (3.3 in) 10.5:1
M54B30 2,979 cc (182 cu in) 170 kW (228 hp) @ 5900 rpm 300 N·m (221 lb·ft) @ 3500 6500 89.6 mm (3.53 in) 84 mm (3.3 in) 10.2:1
S54B32 3,246 cc (198 cu in) 256 kW (343 hp) @ 7900 rpm 365 N·m (269 lb·ft) @ 4900 8000 91.0 mm (3.58 in) 87 mm (3.4 in) 11.5:1

M54B25

The M54B25 is a 2,494 cc (152 cu in) engine with an 84 mm (3.3 in) bore and 75 mm (3.0 in) stroke. Output is 135 kW (181 hp) at 6000 rpm and 237 N·m (175 lb·ft) of torque at 3500 rpm.

Applications:

M54B30

At 2,979 cc (182 cu in), the M54B30 is the largest M54 engine. The extra capacity is achieved using an increased stroke of 89.6 mm (3.5 in). Power is 170 kW (230 hp) at 5,900 rpm and torque is 300 newton metres (220 lb·ft) at 3,500 rpm. There was also a slightly more powerful version of the M54B30 that could be ordered as part of the M Performance package in Canada or the Performance package in the USA. This engine used different camshafts and reprogrammed engine management to develop 175 kW (235 hp) at 5,900 rpm and 301 newton metres (222 lb·ft) at 3500 rpm and have a slightly higher redline of 6800 RPM(although the Canadian cars still show the limiter at 6500 rpm on the tachometer)

The M54B30 was on the Ward’s 10 Best Engines list through 2001-2003.

Applications:

 

(Information from Wikipedia)