BMW M54
| BMW M54 engine | |
|---|---|
 M54B25 in a E39 525i | |
| Overview | |
| Production | 2000–2006 |
| Layout | |
| Configuration | Straight-6 |
| Displacement | 2,171cc(132cu in) 2,494cc(152cu in) 2,979cc(182cu in) |
| Cylinder bore | 80 mm (3.1 in) 84 mm (3.3 in) |
| Piston stroke | 72 mm (2.8 in) 75 mm (3.0 in) 89.6 mm (3.53 in) |
| Cylinder blockmaterial | Aluminium |
| Cylinder headmaterial | Aluminium |
| Valvetrain | DOHCw/VVT |
| Combustion | |
| Fuel type | Petrol |
| Chronology | |
| Predecessor | BMW M52 |
| Successor | BMW N52 |
TheBMWM54is anaturally aspiratedstraight-6DOHCpetrol engine produced from 2000 to 2006. It was released in theE53 X5[1]and is the replacement for theM52engine. TheS54is the equivalent high performance engine, used in theE46 M3,theZ3 M Coupé/Roadsterand theE85/E86 Z4 M.TheBMW M56SULEV engine (sold in several states of the United States) is based on the M54.
The M54 was phased out following the introduction of theBMW N52engine in 2004. From 2001 to 2003, the M54 was included on theWard's 10 Best Engineslist.
Design
[edit]Compared with the final versions of itsM52predecessor (called the 'M52TÜ'), the M54 has a non-return fuel system, a fully electronic throttle (without mechanical backup),[1][2]Siemens MS 43engine management,[3]and a revisedintake manifold.[4]Thedisplacementof the largest variant increased from 2.8 L to 3.0 L (2,979 cc), due to an increase in stroke to 89.6 mm (3.53 in).
As per the M52TÜ, the M54 uses an aluminium block and aluminium cylinder head with cast ironcylinder liners.Variable valve timingis fitted to both camshafts[5](called "double-VANOS"), adual length intake manifold(called "DISA" ) is used and the thermostat is electronically controlled. The redline remains at 6,500 rpm.
There was no "technical update" (TÜ) version of the M54 produced, therefore the engine specifications remained the same throughout its seven-year production run.
Versions
[edit]| Version | Displacement | Power | Torque | Years |
|---|---|---|---|---|
| M54B22 | 2.2 L (2,171 cc) | 125 kW (168 hp) at 6,100 rpm |
210 N⋅m (155 lb⋅ft) at 3,500 rpm |
2000–2006 |
| M54B25 | 2.5 L (2,494 cc) | 141 kW (189 hp) at 6,000 rpm |
245 N⋅m (181 lb⋅ft) at 3,500 rpm |
2000–2006 |
| M54B30 | 3.0 L (2,979 cc) | 170 kW (228 hp) at 5,900 rpm |
300 N⋅m (221 lb⋅ft) at 3,500 rpm |
2000–2006 |
| S54B32 | 3.2 L (3,246 cc) | 252 kW (338 hp) at 7,900 rpm |
365 N⋅m (269 lb⋅ft) at 4,900 rpm |
2000–2008 |
M54B22
[edit]The 2,171 cc (132.5 cu in) M54B22 produces 125 kW (168 hp) at 6,100 rpm and 210 N⋅m (155 lb⋅ft) at 3,500 rpm.[6]Boreis 80 mm (3.1 in),strokeis 72 mm (2.8 in) and thecompression ratiois 10.8:1.
- Applications
- 2000–2006E46320i, 320Ci
- 2000–2003E39520i
- 2000–2002E36/7Z3 2.2i
- 2003–2005E85Z4 2.2i
- 2003–2005E60/E61520i
M54B25
[edit]The 2,494 cc (152.2 cu in) M54B25 produces 141 kW (189 hp) at 6,000 rpm and 245 N⋅m (181 lb⋅ft) at 3,500 rpm.[6]Bore is 84 mm (3.3 in), stroke is 75 mm (3.0 in) and the compression ratio is 10.5:1.
- Applications
- 2000–2002E36/7Z3 2.5i
- 2000–2006E46325i, 325xi, 325Ci
- 2000–2004E46/5325ti
- 2000–2004E39525i
- 2003–2005E60/E61525i, 525xi
- 2003–2006E83X3 2.5i
- 2002–2005E85Z4 2.5i
M54B30
[edit]The 2,979 cc (181.8 cu in) M54B30 is the largest M54 variant and produces 170 kW (228 hp) at 5,900 rpm and 300 N⋅m (221 lb⋅ft) at 3,500 rpm.[6]Bore is 84 mm (3.3 in), stroke is 89.6 mm (3.5 in) and the compression ratio is 10.2:1.[7]
In the United States and Canada, a "ZHP" version of the M54B30 used different camshafts and reprogrammed engine management to develop 175 kW (235 hp) at 5,900 rpm and 301 N⋅m (222 lb⋅ft) at 3,500 rpm and have a slightly higher redline of 6,800 rpm (although the Canadian cars still show the limiter at 6,500 rpm on the tachometer).[8][9]
The M54B30 was on theWard's 10 Best Engineslist through 2001–2003.[10]
- Applications
- 2000–2006E46330i, 330xi, 330Ci
- 2000–2004E39530i
- 2000–2002E36/7Z3 3.0i
- 2003–2005E60530i
- 2002–2005E85Z4 3.0i
- 2003–2006E83X3 3.0i
- 2000–2006E53X5 3.0i
- 2002–2005E65/E66730i, 730Li
- 2000–2002Wiesmann MF 30
S54
[edit]| BMW S54 engine | |
|---|---|
 S54B32 in a E86 Z4 M Coupé | |
| Overview | |
| Production | 2000–2008 |
| Layout | |
| Configuration | straight-6 |
| Displacement | 3.2 L (3,246 cc) |
| Cylinder bore | 87 mm (3.4 in) |
| Piston stroke | 91 mm (3.6 in) |
| Cylinder blockmaterial | Cast iron |
| Cylinder headmaterial | Aluminium |
| Valvetrain | DOHCw/VVT |
| Combustion | |
| Fuel type | Gasoline |
| Chronology | |
| Predecessor | BMW S50 |
| Successor | BMW S55 |
The S54 was marketed as the high performance equivalent to the M54, however it is actually more an evolution of theBMW S50and shares few parts with the M54.[11]As per the S50, the engine block is made of cast iron, unlike the aluminium engine block used by the M54.[12]Redlineis 8,000 rpm.
Compared with the S50, the S54 features:[11][13][14]
- Boreincreased to 87 mm (3.43 in), resulting in adisplacementof 3,246 cc (198.1 cu in)
- Revisedcamshafts
- Finger follower valve actuation instead of bucket-style tappets
- Compression ratioincreased from 11.3:1 to 11.5:1
- SiemensMSS54engine control unit(MSS70 in the later Z4 M)
- Electronic throttle control
- Scavengingoil pumpto avoid oil starvation during cornering (this was also present on the S50B30 of the E36 M3 GT and the S50B32, but not the regular S50B30)
There is no direct successor to the S54, since the following generationE90/E92/E93 M3was powered by the V8BMW S65engine.
In 2014, the S65 engine was replaced with a turbocharged inline-6 engine called theBMW S55.Returning to the I6 configuration, it is considered by some to be the spiritual successor of the S54, though the two have no real engineering connection. This engine was first used in theBMW M3 F80andBMW M4 F82then later in theBMW M2 Competition F87.
S54B32
[edit]Variations in power and torque outputs are often due to country-specific emissions regulations, or space constraints of a chassis affecting the layout of the intake/exhaust system.
- Applications
- 2000–2006E46 M3— produces 252 kW (343 PS; 338 hp) at 7,900 rpm and 365 N⋅m (269 lb⋅ft) at 4,900 rpm. Models for the United States and Canada produce 248 kW (333 hp) and 355 N⋅m (262 lb⋅ft).
- 2000–2002E36/7 Z3 M Roadster,E36/8 M Coupé— produces 239 kW (325 PS; 321 hp) and 354 N⋅m (261 lb⋅ft). Models for the United States and Canada produce 235 kW (315 hp) and 341 N⋅m (252 lb⋅ft).
- 2002–2011Wiesmann MF 3 Roadster— produces 252 kW (343 PS; 338 hp) and 365 N⋅m (269 lb⋅ft).[15][16]
- 2006–2008E85 Z4 M Roadster,E86 Z4 M Coupé— produces 252 kW (343 PS; 338 hp) and 365 N⋅m (269 lb⋅ft) - Engine code 326S4. Models for the United States and Canada produce 246 kW (330 hp) and 355 N⋅m (262 lb⋅ft). The Z4 M's engine uses a Siemens MSS70 control unit.[17]
S54B32HP
[edit]
An upgraded version of the S54 engine was used in theE46 M3 CSL.This engine is designated S54B32HP and the changes include a revised intake made fromcarbon fiber,revised camshafts, a MAP sensor (instead of the MAF sensor used in the regular S54),[3]a lightweight exhaust manifold with a straighter air path (which later became standard on the regular S54) and a straightened intake manifold.[18]
- Applications
- 2003E46 M3 CSL265 kW (360 hp), 370 N⋅m (273 lb⋅ft)[19]
- 2009 Wiesmann MF 3 Roadster "20th Anniversary Edition" — produces 265 kW (360 hp), 370 N⋅m (273 lb⋅ft)
See also
[edit]
References
[edit]- ^ab"Bmw m54 Engine".www.scribd.com.Retrieved17 June2016.
- ^Burns, John G."The UnixNerd's Domain - BMW M50 M52 M54 Engines".www.unixnerd.demon.co.uk.Archived fromthe originalon 2018-09-27.Retrieved2016-07-17.
- ^ab"BMW World - M54 Engine".www.usautoparts.net.Archived fromthe originalon 15 November 2013.Retrieved17 October2017.
- ^"BMW M54 and S54 engines".www.australiancar.reviews.Archived fromthe originalon 26 December 2019.Retrieved10 October2017.
- ^"The BMW Six Cylinder Guide".www.autospeed.com.Archived fromthe originalon 29 March 2012.Retrieved22 November2012.
- ^abc"Information on M54 engines".www.engine-specs.net.RetrievedJun 29,2023.
- ^"BMW M54B30 Engine".www.mywikimotors.com.Archived fromthe originalon 27 October 2017.Retrieved17 October2017.
- ^"BMW 330i with Performance Package - Road Test - Car Reviews".www.caranddriver.com.Retrieved17 July2016.
- ^"Frequently Asked Questions (FAQ) About the BMW E46 330 ZHP Performance Package Option".www.zhpmafia.com.Retrieved17 July2016.
- ^"10 Best Engines".www.wardsauto.com.Archived fromthe originalon 6 October 2015.Retrieved17 July2016.
- ^ab"FAQ E46 M3".www.bmwmregistry.com.Retrieved19 October2017.
- ^"BMW S54 Engine".www.mywikimotors.com.Archived fromthe originalon 12 October 2017.Retrieved19 October2017.
- ^"Jalopnik: 'Dear BMW, Why Did You Retire the S54B32 Engine?'".www.bmwblog.com.Retrieved19 October2017.
- ^"BMW YouTube channel - The BMW M3 (E46) film. Everything about the third generation BMW M3".www.youtube.com.Retrieved19 October2017.
- ^"Wiesmann MF3".Wiesmann. Archived fromthe originalon 2021-01-21.
- ^Adams, Lawrence."Official: Wiesmann Roadster MF3 Final Edition by Sieger".www.gtspirit.com.Retrieved17 July2016.
- ^"Z4 E85 M3.2 Basic control unit DME / MSS70".RealOEM.RetrievedMay 15,2023.
- ^"BMW M3 CSL Performance".www.automobilemag.com.Archivedfrom the original on 4 June 2009.Retrieved10 July2009.
- ^"2003 BMW M3 CSL E46 specifications".www.carfolio.com.Retrieved18 July2021.