BMW M54#S54
{{Infobox automobile engine
| name = BMW M54 engine
| production = 2000–2006
| configuration = Straight-6
| block = Aluminium
| head = Aluminium
| image = BMW M54B25 001.jpg
| caption = M54B25 in a E39 525i
| fueltype = Petrol
| predecessor = BMW M52
| successor = BMW N52
| manufacturer =
| displacement = {{convert|2171|cc|cuin|0|abbr=on|lk=on}}
{{convert|2494|cc|cuin|0|abbr=on|lk=on}}
{{convert|2979|cc|cuin|0|abbr=on|lk=on}}
| bore = {{convert|80|mm|abbr=on}}
{{convert|84|mm|abbr=on}}
| stroke = {{convert|72|mm|abbr=on}}
{{convert|75|mm|abbr=on}}
{{convert|89.6|mm|abbr=on}}
}}
The BMW M54 is a naturally aspirated straight-6 DOHC petrol engine produced from 2000 to 2006. It was released in the E53 X5 and is the replacement for the M52 engine. The S54 is the equivalent high-performance engine, used in the E46 M3, the Z3 M Coupé/Roadster and the E85/E86 Z4 M. The BMW M56 SULEV engine (sold in several states of the United States) is based on the M54.
The M54 was phased out following the introduction of the BMW N52 engine in 2004. From 2001 to 2003, the M54 was included on the Ward's 10 Best Engines.
Design
Compared with the final versions of its M52 predecessor (called the 'M52TÜ'), the M54 has a non-return fuel system, a fully electronic throttle (without mechanical backup),{{cite web |url=https://www.scribd.com/doc/79004025/Bmw-m54-Engine |title=Bmw m54 Engine |website= www.scribd.com |access-date=17 June 2016}}{{cite web | first = John G. | last = Burns | url = http://www.unixnerd.demon.co.uk/m50.html | title = The UnixNerd's Domain - BMW M50 M52 M54 Engines | website = www.unixnerd.demon.co.uk | access-date = 2016-07-17 | archive-date = 2018-09-27 | archive-url = https://web.archive.org/web/20180927162926/http://www.unixnerd.demon.co.uk/m50.html | url-status = dead }} Siemens MS 43 engine management,{{cite web|title=BMW World - M54 Engine| url= https://www.usautoparts.net/bmw/engines/m54.htm|website= www.usautoparts.net|access-date= 17 October 2017| archive-url= https://web.archive.org/web/20131115023420/http://www.usautoparts.net/bmw/engines/m54.htm|archive-date=15 November 2013|url-status=dead}} and a revised intake manifold.{{cite web |title=BMW M54 and S54 engines |url=https://australiancar.reviews/bmw_M54-S54.php |website=www.australiancar.reviews |access-date=10 October 2017 |archive-date=26 December 2019 |archive-url=https://web.archive.org/web/20191226104652/http://australiancar.reviews/bmw_M54-S54.php |url-status=dead }} The displacement of the largest variant increased from 2.8 L to {{convert|2979|cc|L|1|abbr=on|order=flip}}, due to an increase in stroke to {{convert|89.6|mm|in|2|abbr=on}}.
As per the M52TÜ, the M54 uses an aluminium block and aluminium cylinder head with cast iron cylinder liners. Variable valve timing is fitted to both camshafts{{cite web |url=http://autospeed.com/cms/title_The-BMW-Six-Cylinder-Guide/A_2948/article.html |title=The BMW Six Cylinder Guide |website=www.autospeed.com |access-date=22 November 2012 |archive-url=https://web.archive.org/web/20120329195446/http://autospeed.com/cms/title_The-BMW-Six-Cylinder-Guide/A_2948/article.html |archive-date=29 March 2012 |url-status=dead }} (called "double-VANOS"), a dual 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
| class="wikitable sortable" | ||||
| Version | Displacement | Power | Torque | Years |
|---|---|---|---|---|
| M54B22
|{{cvt|2171|cc|L|1|disp=flip}}|| {{convert|125|kW|hp|0|abbr=on}} | ||||
| M54B25
|{{cvt|2494|cc|L|1|disp=flip}}|| {{convert|141|kW|abbr=on|0}} | ||||
| M54B30
|{{cvt|2979|cc|L|1|disp=flip}}|| {{convert|170|kW|abbr=on|0}} | ||||
| S54B32
|{{cvt|3246|cc|L|1|disp=flip}}|| {{convert|252|kW|abbr=on|0}} |
=M54B22=
The {{convert|2171|cc|cuin|abbr=on|1}} M54B22 produces {{convert|125|kW|hp|0|abbr=on}} at 6,100 rpm and {{convert|210|Nm|lbft|0|abbr=on}} at 3,500 rpm.{{cite web |title=Information on M54 engines |url=https://www.engine-specs.net/bmw/m54b25.html |access-date=Jun 29, 2023 |website=www.engine-specs.net}} Bore is {{convert|80|mm|in|1|abbr=on}}, stroke is {{convert|72|mm|in|1|abbr=on}} and the compression ratio is 10.8:1.
;Applications
=M54B25=
=M54B30=
The {{convert|2979|cc|cuin|abbr=on|1}} M54B30 is the largest M54 variant and produces {{convert|170|kW|hp|abbr=on|0}} at 5,900 rpm and {{convert|300|Nm|lbft|abbr=on|0}} at 3,500 rpm. Bore is {{convert|84|mm|in|1|abbr=on}}, stroke is {{convert|89.6|mm|in|1|abbr=on}} and the compression ratio is 10.2:1.{{cite web|title=BMW M54B30 Engine|url=https://mywikimotors.com/m54b30/|website=www.mywikimotors.com|access-date=17 October 2017|archive-url=https://web.archive.org/web/20171027220418/http://mywikimotors.com/m54b30/|archive-date=27 October 2017|url-status=dead}}
In the United States and Canada, a "ZHP" version of the M54B30 used different camshafts and reprogrammed engine management to develop {{convert|175|kW|hp|0|abbr=on}} at 5,900 rpm and {{convert|301|Nm|lbft|0|abbr=on}} 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).{{cite web |url= http://www.caranddriver.com/reviews/bmw-330i-with-performance-package-road-test |title=BMW 330i with Performance Package - Road Test - Car Reviews |website= www.caranddriver.com |access-date=17 July 2016}}{{cite web| url= http://www.zhpmafia.com/forums/content.php?30-Frequently-Asked-Questions-(FAQ)-About-the-BMW-E46-330-ZHP-Performance-Package-Option |title= Frequently Asked Questions (FAQ) About the BMW E46 330 ZHP Performance Package Option |website= www.zhpmafia.com |access-date=17 July 2016}}
The M54B30 was on the Ward's 10 Best Engines list through 2001–2003.{{cite web|url=http://wardsauto.com/news-amp-analysis/10-best-engines-2|title=10 Best Engines|website=www.wardsauto.com|access-date=17 July 2016|archive-date=6 October 2015|archive-url=https://web.archive.org/web/20151006194813/http://wardsauto.com/news-amp-analysis/10-best-engines-2|url-status=dead}}
;Applications
S54
{{Infobox automobile engine
| name = BMW S54 engine
| image = BMW S54B32 Engine.JPG
| caption = S54B32 in a E86 Z4 M Coupé
| production = 2000–2008
| configuration = straight-6
| block = Cast iron
| head = Aluminium
| predecessor = BMW S50
| successor = BMW S55
| manufacturer =
| displacement = {{cvt|3246|cc|L|1|disp=flip}}
| bore = {{convert|87|mm|abbr=on}}
| stroke = {{convert|91|mm|abbr=on}}
| fueltype = Gasoline
}}
The S54 was marketed as the high performance equivalent to the M54, however it is actually more an evolution of the BMW S50 and shares few parts with the M54.{{cite web|title=FAQ E46 M3 |url=https://www.bmwmregistry.com/model_faq.php?id=19|website= www.bmwmregistry.com| access-date= 19 October 2017}} As per the S50, the engine block is made of cast iron, unlike the aluminium engine block used by the M54.{{cite web| title= BMW S54 Engine| url= https://mywikimotors.com/bmw-s54/| website= www.mywikimotors.com| access-date= 19 October 2017| archive-url= https://web.archive.org/web/20171012102513/http://mywikimotors.com/bmw-s54/| archive-date= 12 October 2017| url-status= dead}} Redline is 8,000 rpm.
Compared with the S50, the S54 features:{{cite web|title=Jalopnik: 'Dear BMW, Why Did You Retire the S54B32 Engine?' |url= https://www.bmwblog.com/2010/08/26/jalopnik-dear-bmw-why-did-you-retire-the-s54b32-engine/| website= www.bmwblog.com| access-date=19 October 2017}}{{cite web| title= BMW YouTube channel - The BMW M3 (E46) film. Everything about the third generation BMW M3| url= https://www.youtube.com/watch?v=rJvN8zva4jg| website= www.youtube.com| access-date=19 October 2017}}
- Bore increased to {{convert|87|mm|2|abbr=on}}, resulting in a displacement of {{convert|3246|cc|cuin|1|abbr=on}}
- Revised camshafts
- Finger follower valve actuation instead of bucket-style tappets
- Compression ratio increased from 11.3:1 to 11.5:1
- Siemens MSS54 engine control unit (MSS70 in the later Z4 M)
- Electronic throttle control
- Scavenging oil pump to 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 generation E90/E92/E93 M3 was powered by the V8 BMW S65 engine.
=S54B32=
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
- 2000–2006 E46 M3 — produces {{cvt|252|kW|PS hp|0}} at 7,900 rpm and {{convert|365|Nm|lbft|0|abbr=on}} at 4,900 rpm. Models for the United States and Canada produce {{convert|248|kW|hp|0|abbr=on}} and {{convert|355|Nm|lbft|0|abbr=on}}.
- 2000–2002 E36/7 Z3 M Roadster, E36/8 M Coupé — produces {{cvt|239|kW|PS hp|0}} and {{convert|354|Nm|lbft|0|abbr=on}}. Models for the United States and Canada produce {{convert|235|kW|hp|0|abbr=on}} and {{convert|341|Nm|lbft|0|abbr=on}}.
- 2002–2011 Wiesmann MF 3 Roadster — produces {{cvt|343|PS|kW PS hp|0|order=out}} and {{convert|365|Nm|lbft|0|abbr=on}}.{{cite web | url = https://wiesmann.com/pages/mf3 | title = Wiesmann MF3 | publisher = Wiesmann | archive-url = https://web.archive.org/web/20210121203143/https://wiesmann.com/pages/mf3 | archive-date = 2021-01-21 }}{{cite web |last= Adams |first=Lawrence |url=http://www.gtspirit.com/2011/08/31/official-wiesmann-roadster-mf3-final-edition-by-sieger/ |title=Official: Wiesmann Roadster MF3 Final Edition by Sieger |website=www.gtspirit.com |access-date=17 July 2016}}
- 2006–2008 E85 Z4 M Roadster, E86 Z4 M Coupé — produces {{cvt|252|kW|PS hp|0}} and {{convert|365|Nm|lbft|0|abbr=on}} - Engine code 326S4. Models for the United States and Canada produce {{convert|246|kW|hp|0|abbr=on}} and {{convert|355|Nm|lbft|0|abbr=on}}. The Z4 M's engine uses a Siemens MSS70 control unit.{{Cite web |title=Z4 E85 M3.2 Basic control unit DME / MSS70 |url=https://www.realoem.com/bmw/enUS/showparts?id=BT93-USA-07-2007-E85-BMW-Z4_M32&diagId=12_1386 |access-date=May 15, 2023 |website=RealOEM}}
=S54B32HP=
File:BMW_S54_B32HP_engine_in_BMW-Museum_in_Munich%2C_Bayern.JPG
An upgraded version of the S54 engine was used in the E46 M3 CSL. This engine is designated S54B32HP and the changes include a revised intake made from carbon fiber, revised camshafts, a MAP sensor (instead of the MAF sensor used in the regular S54), a lightweight exhaust manifold with a straighter air path (which later became standard on the regular S54) and a straightened intake manifold.{{cite web| url= http://www.automobilemag.com/reviews/coupes/0210_bmw_m3_csl/performance.html|title=BMW M3 CSL Performance|website=www.automobilemag.com |access-date=10 July 2009 |archive-url= https://web.archive.org/web/20090604133926/http://www.automobilemag.com/reviews/coupes/0210_bmw_m3_csl/performance.html| archive-date= 4 June 2009 | url-status= live}}
;Applications
- 2003 E46 M3 CSL {{cvt|265|kW|hp-metric|0}}, {{convert|370|Nm|lbft|0|abbr=on}}{{cite web |title=2003 BMW M3 CSL E46 specifications |url=https://www.carfolio.com/bmw-m3-csl-107635 |website=www.carfolio.com |access-date=18 July 2021}}
- 2009 Wiesmann MF 3 Roadster "20th Anniversary Edition" — produces {{cvt|265|kW|hp-metric|0}}, {{convert|370|Nm|lbft|0|abbr=on}}
{{clear right}}
See also
References
{{reflist|30em}}
External links
{{Commonscatinline}}
{{BMW automotive petrol engines: 1980s to 2000s}}