Play Video
1
BMW 335 Valve Cleaning N54
BMW 335 Valve Cleaning N54
::2012/09/24::
Play Video
2
BMW N54 Turbo Rattle Clanking Noise Caused By Failure Turbo Chargers
BMW N54 Turbo Rattle Clanking Noise Caused By Failure Turbo Chargers
::2013/07/01::
Play Video
3
BMW N54 135i and 335i HPF CLUTCH INSTALLATION TECH VIDEO by HorsepowerFreaks
BMW N54 135i and 335i HPF CLUTCH INSTALLATION TECH VIDEO by HorsepowerFreaks
::2011/10/20::
Play Video
4
Bmw n54 walk around
Bmw n54 walk around
::2013/04/25::
Play Video
5
BMW E82 N54 & N55
BMW E82 N54 & N55
::2011/05/30::
Play Video
6
2007-2010 BMW 335i (E90/92/93) N54; P/N 54-11472 Intake Installation Video
2007-2010 BMW 335i (E90/92/93) N54; P/N 54-11472 Intake Installation Video
::2013/02/27::
Play Video
7
BMW N54 Engine Intake Valve Cleaning with Walnut Shell Blasting Equipment
BMW N54 Engine Intake Valve Cleaning with Walnut Shell Blasting Equipment
::2014/01/15::
Play Video
8
BMW Vanos Solenoid Replacement Intake and Exhaust N51, N52, N52K, N54 Faults 2A87 2A82 2A9A 2A98
BMW Vanos Solenoid Replacement Intake and Exhaust N51, N52, N52K, N54 Faults 2A87 2A82 2A9A 2A98
::2013/01/18::
Play Video
9
BMW Injector Recall 1 & 3 series N54 Engine How to DIY: BMTroubleU
BMW Injector Recall 1 & 3 series N54 Engine How to DIY: BMTroubleU
::2012/04/09::
Play Video
10
BMW N54 335i Alpina Flash Review / Launch 0-100 km/h 0-60 MPH
BMW N54 335i Alpina Flash Review / Launch 0-100 km/h 0-60 MPH
::2013/11/28::
Play Video
11
BMW Oil Service Procedure 3, 5, X3, X5 N51, N52, N54 Engine
BMW Oil Service Procedure 3, 5, X3, X5 N51, N52, N54 Engine
::2011/11/23::
Play Video
12
DIY BMW N54 Injector Coding via INPA
DIY BMW N54 Injector Coding via INPA
::2012/01/22::
Play Video
13
400HP BMW N54 335xi - Onboard Drive & Exhaust Sound
400HP BMW N54 335xi - Onboard Drive & Exhaust Sound
::2014/03/09::
Play Video
14
COBB Tuning - AskCOBB Episode 2 - BMW Misfire Diagnosis and Repair
COBB Tuning - AskCOBB Episode 2 - BMW Misfire Diagnosis and Repair
::2012/02/06::
Play Video
15
Proven Power BMW single turbo N54 335i
Proven Power BMW single turbo N54 335i
::2013/04/25::
Play Video
16
Aftermarket bov on stock bmw n54 charge pipe info
Aftermarket bov on stock bmw n54 charge pipe info
::2013/04/30::
Play Video
17
BMW 335i N54 Catless downpipes
BMW 335i N54 Catless downpipes
::2013/06/30::
Play Video
18
Kind of a N54 Valve Cover DIY
Kind of a N54 Valve Cover DIY
::2012/10/18::
Play Video
19
335i (N54) BMW Performance Exhaust
335i (N54) BMW Performance Exhaust
::2013/11/27::
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20
BMW 335i xDrive E92 N54 Msport original exhaust sound
BMW 335i xDrive E92 N54 Msport original exhaust sound
::2012/07/21::
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21
BMW N54 335 135 Boost Line DIY
BMW N54 335 135 Boost Line DIY
::2011/04/26::
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22
Cleaning carbon from intake ports and valves on BMW and MINI turbo engines N54 N55
Cleaning carbon from intake ports and valves on BMW and MINI turbo engines N54 N55
::2014/07/02::
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23
Bmw f82 M4 vs bmw e82 135i n54 PTF
Bmw f82 M4 vs bmw e82 135i n54 PTF
::2014/08/22::
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24
BMW 335i N54 Performance Exhaust WOT
BMW 335i N54 Performance Exhaust WOT
::2013/02/16::
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25
335i e92 N54 BMW Performance Exhaust - Acceleration
335i e92 N54 BMW Performance Exhaust - Acceleration
::2012/11/17::
Play Video
26
BMW 335i N54 Coldstart with Catless downpipes & performance silencer
BMW 335i N54 Coldstart with Catless downpipes & performance silencer
::2013/06/30::
Play Video
27
400HP BMW N54 335xi 0-240 km/h (0-150 MPH)
400HP BMW N54 335xi 0-240 km/h (0-150 MPH)
::2013/09/13::
Play Video
28
425HP BMW N54 335xi 3rd Gear Pull
425HP BMW N54 335xi 3rd Gear Pull
::2014/10/04::
Play Video
29
BMW N54 335xi DS-mode VS M-mode / Top Speed 240 km/h (150 MPH)
BMW N54 335xi DS-mode VS M-mode / Top Speed 240 km/h (150 MPH)
::2013/12/16::
Play Video
30
Sonido Kit valvula descarga BOV TUrbosmart BMW N54 twin turbo www.turbosmart.es
Sonido Kit valvula descarga BOV TUrbosmart BMW N54 twin turbo www.turbosmart.es
::2013/08/14::
Play Video
31
BMW N54 335i (23psi) vs 2015 BMW F80 M3 JB4 500+whp
BMW N54 335i (23psi) vs 2015 BMW F80 M3 JB4 500+whp
::2014/10/26::
Play Video
32
BMW 135i Performance ESD Sound N54 (HD)
BMW 135i Performance ESD Sound N54 (HD)
::2011/04/29::
Play Video
33
BMW 335i N54 - Coldstart - Full Performance Exhaust
BMW 335i N54 - Coldstart - Full Performance Exhaust
::2013/03/29::
Play Video
34
705whp & 622wt BMW n54 335i auto transmission
705whp & 622wt BMW n54 335i auto transmission
::2014/09/26::
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35
E92 BMW 335i  - Twin-Turbo N54 exhaust note
E92 BMW 335i - Twin-Turbo N54 exhaust note
::2012/08/20::
Play Video
36
BMW 135i N54 vs. N55 Cold Start
BMW 135i N54 vs. N55 Cold Start
::2010/05/16::
Play Video
37
BMW N54 335xi 425HP Pulls and Launches
BMW N54 335xi 425HP Pulls and Launches
::2014/10/23::
Play Video
38
BMW N54 Boost Solenoid / Wastegate Vacuum Test
BMW N54 Boost Solenoid / Wastegate Vacuum Test
::2012/07/23::
Play Video
39
2007 BMW 335i N54 twin Turbo RB turbos JB4 stage 3 cruisin to Bullet Train by Stephen Swartz
2007 BMW 335i N54 twin Turbo RB turbos JB4 stage 3 cruisin to Bullet Train by Stephen Swartz
::2014/04/07::
Play Video
40
400HP BMW N54 335xi - Drive in the City - Onboard View (1080p HD)
400HP BMW N54 335xi - Drive in the City - Onboard View (1080p HD)
::2014/07/07::
Play Video
41
BMW 335i E92 N54 vs Ferrari California
BMW 335i E92 N54 vs Ferrari California
::2013/10/07::
Play Video
42
BMW N54 335i Sweeps Gauges
BMW N54 335i Sweeps Gauges
::2014/07/07::
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43
BMW Performance Exhaust for 335i E92 N54
BMW Performance Exhaust for 335i E92 N54
::2013/11/23::
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44
BMW N54 335i vs Corvette Z06 640whp  (Iphone Vide )
BMW N54 335i vs Corvette Z06 640whp (Iphone Vide )
::2014/10/26::
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45
How to Change Your Oil - BMW 335i 2007-2010 e90 e91 e92 N54
How to Change Your Oil - BMW 335i 2007-2010 e90 e91 e92 N54
::2014/05/12::
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46
Helix Motorsport | N54 Blow Off Valve Install video
Helix Motorsport | N54 Blow Off Valve Install video
::2010/11/04::
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47
BMW N54 335i Exhaust Flap Rattle / Cold Start
BMW N54 335i Exhaust Flap Rattle / Cold Start
::2013/06/19::
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48
BMW AG N54 motor model
BMW AG N54 motor model
::2010/10/01::
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49
BMW 135i N54 straight pipe
BMW 135i N54 straight pipe
::2014/04/20::
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50
BMW 335i e92 n54 vacuum line wastegate rattle
BMW 335i e92 n54 vacuum line wastegate rattle
::2014/02/26::
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From Wikipedia, the free encyclopedia
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BMW N54 engine
JK N54B30.jpg
Overview
Manufacturer BMW, Bayerische Motoren Werke AG
Production 2006–2008
Combustion chamber
Configuration Straight-6
Chronology
Predecessor BMW M54, BMW N52
Successor BMW N55

The N54 is a direct injection twin-turbocharged straight-6 automobile engine from BMW.[1] It debuted at the 2006 Geneva Motor Show and was launched in late 2006 as a high-performance option for the BMW 3-Series, first to be released along with the new 3-series E92 Coupé, to be followed closely by other existing 3-series models, then with other BMW series as well. The N54 has won five straight International Engine of the Year awards,[2] and three straight Ward's 10 Best Engines awards.[3]

The use of two small turbochargers plus direct fuel injection allows for a broader power band and less turbo lag than previous turbocharged gasoline engines. Despite its relatively small-displacement, the N54B30 provides the midrange torque of a mid-displacement V8 engine more efficiently and at less weight.[4]

Specifications[edit]

Models
Engine Displacement Power Torque Redline Bore Stroke Compression ratio Year
N54B30 2,979 cc (3.0 L; 181.8 cu in) 225 kW (306 hp) @ 5800 400 N·m (295 lb·ft) @ 1400-5000 7000 rpm 84.0 89.6 10.2:1 2007
N54B30 2,979 cc (3.0 L; 181.8 cu in) 243 kW (326 hp) @ 5800 450 N·m (332 lb·ft) @ 1500-4500 7000 rpm 84.0 89.6 10.2:1 2008-2009
N54B30 2,979 cc (3.0 L; 181.8 cu in) 250 kW (335 hp) @ 5900 450 N·m (332 lb·ft) @ 1500-4500 7000 rpm 84.0 89.6 10.2:1 2010

The N54B30 does not use the second generation Valvetronic technology found in the naturally aspirated N52 and the newer (single) twin-scroll turbocharged straight-6 N55. The engine block of the N54 is derived from the older generation BMW M54B30 engine - all aluminum with cast iron cylinder liners. This is because the newer N52 aluminum-magnesium engine block was not deemed as suitable for turbo-charging with the above-mentioned engineering goals. The N54's block size is identical to the older M54B30 at 2979 cc/181 in³ instead of the 2996 cc/182 in³ of the new N52B30 3.0L engine, while the N54 is physically heavier (195 kg (430 lb)) than the very light (161 kg (355 lb)) N52 engine. There are some differences between the M54 and N54; the M54 is a single-piece block, with the water pump housing cast into the block, and is a closed-deck design, compared to the N54's two-piece block with a separate bedplate, electric water pump, and open deck. [5]

The engine uses two small low-pressure turbochargers to remove turbo lag at low elevations. For this reason, the turbo pressure is only 8.8 psi as the engineering goal was to offer the same driving feel as with naturally aspirated engines.[6] BMW's brand for turbocharging is "TwinPower Turbo".[7]

The engine's gasoline direct injection system uses high-priced piezo injectors, also used in the naturally-aspirated N53 (mostly European markets only). However it was found that the piezo injectors were very expensive and not reaching their full potential when used in North America, in contrast to Europe which they could perform lean burn. The succeeding N55's direct injection uses cheaper Bosch solenoid-type injectors.[8] BMW's trademark for direct injection, regardless of type, is known as "High Precision Injection".[9]

According to BMW, the N54B30 produces 306 hp (228 kW) and 295 lb·ft/400 N·m.[10] Third party testing has revealed the engine is significantly underrated, producing 332 hp (248 kW) and 311 lb·ft/422 N·m in one test.[11]

N54B30 (225 kW version)[edit]

For the BMW 3 Series, the N54 engine powered the 335i high-end configuration from the 2007 model year onwards, replacing the 330i and its 3.0L naturally aspirated straight-6 as the performance trim (ranking below the new 4.0L V8-powered BMW M3).

For the BMW 5 Series, the N54 engine powered the 535i midrange configuration from the 2008 model year onwards, replacing the 530i and its 3.0L naturally aspirated straight-6 in that trim level.

BMW has rated this engine at 225 kW and 400 N·m.[12] However, independent testing has revealed the engine is significantly underrated, producing 332 hp (248 kW) and 311 lb·ft/422 N·m in one test.[11]

Applications:

N54B30 (240 kW version)[edit]

A variant of the N54B30 with higher power and torque but across a narrower peak torque band is used in the 2009 740i[13] and 2011 335is.[14]

Applications:

N54B30TO (250 kW version)[edit]

The most powerful version of the N54 is found in the 1 Series M Coupe.[15][16] and 2010 onwards Z4 sDrive35is.

Applications:

Performance[edit]

Comparison with 6-cylinder engines[edit]

The N54 has considerably higher horsepower and torque, compared to BMW's recent straight-6 engines which were all naturally aspirated such as the high output versions of the N52B30 (which has the same displacement as the N54), with the N54 having an additional 45 horsepower and 80 pound-feet of torque over the N52B30.[17] In the USA, the N54 was the upgrade engine in the 3 Series and 5 Series, above the N52 naturally-aspirated base powerplant.

BMW's newer N55 3.0L turbo inline-6 uses a single turbocharger but with twin scroll technology, and its 300 lb-ft of torque comes at 1200 rpm which is 200 revs earlier than the N54’s identical output.[18] The N55 is also more fuel-efficient and has less emissions than the N54. However, the N54 engine has more output potential and a variant of the N54B30 with higher power and torque but across a narrower peak torque band is used in the F01 2009 BMW 740i.[19][13] A comparison test saw the 2011 BMW 740i accelerate quicker than the 2011 BMW 535i (equipped with the N55), even though the 535i weighs 300 pounds less.[20] It was not until 2012 (for the 2013 model year) that a high-output version of the N55 engine debuted which will replace the last variants of the N54.[21]

Comparison with V8 engines[edit]

The torque characteristic of the N54 engine combined with the relative lack of turbo lag provides a similar feel to a small V8, according to a journalist.[4] The advantage of the N54B30 engine is that compared to similar power output 225 kW (302 hp) 290 lb·ft (390 N·m) V8 4.0L N62B40 it weighs 70 kg less than the V8, which is massive at 265 kg (584 lb). Additionally, the N54 has higher low-end torque than the N62B40. In the 5 Series (E60), the N54 in the 2008 BMW 535i gives it almost equivalent acceleration to the BMW 550i, with a V8 engine (4.8L N62B48) which costs an additional $10,000 USD in MSRP and makes the front 200 pounds heavier (which affects vehicle handling).[22]

In the 2011 BMW 740i, the N54 is down 85 hp (63 kW) and 120 lb·ft (160 N·m) compared to the BMW 750i’s N63 4.4L twin-turbo V8, however the 740i weighs about 215 pounds (98 kg) less, which considerably improves handling dynamics.[23] The 740i also retains respectable straight-line acceleration in a comparison test as it could make the 0 to 60 mph (97 km/h) run in 5.1 seconds compared to the 750i's 5.2, and the 750i only catches up at 70 mph (110 km/h), with the N54 having less turbo lag, smoother acceleration, and smoother power delivery than the N63.[24] Fuel economy of the 740i is 17 mpg city and 25 highway, compared with the 750i’s 15/22 and the ActiveHybrid 7's 17/26, considering that the 740i has an MSRP of $71,025 USD while the ActiveHybrid 7 (which shares the N63 V8 with the 750i but mated to an electric motor) starts at $103,125 USD.[25]

HPFP Problems[edit]

In at least the US market, the N54 engine has been characterized by a very large number of High Pressure Fuel Pump (HPFP) failures,[26]

On 26 October 2010, following an ABC News story about HPFP failures,[27] BMW announced a recall of vehicles with the pump in question from manufacturing years 2007-2010.[28] A class action suit has been filed against BMW regarding these problems.[29]

See also[edit]

References[edit]

  1. ^ Finlay, Steve (2007-04-01). "Direct Injection, Turbo Pay Off For BMW | News & Analysis content from WardsAuto". Wardsautoworld.com. Retrieved 2012-07-27. 
  2. ^ "BMW takes home 4 awards from International Engine of the Year competition - N54 and S65 continue dominance". bimmerboost.com. Retrieved 2012-10-06. 
  3. ^ "BMW's Newest I-6 Better, Not Bigge". wardsauto.com. Retrieved 2012-10-06. 
  4. ^ a b "2007 BMW 335i Coupe - Road Test - Car Reviews". Car and Driver. 2012-07-22. Retrieved 2012-07-27. 
  5. ^ "Motor Engine: BMW N54 inline 6 twin turbo". Motorengine.blogspot.com.au. 2008-11-30. Retrieved 2012-05-30. 
  6. ^ Mark Wan. "BMW Page". Autozine.org. Retrieved 2010-09-13. 
  7. ^ [1]
  8. ^ [2]
  9. ^ [3]
  10. ^ [4]
  11. ^ a b "Available now at all 150 Dinan dealers" (PDF). Archived from the original on 20 September 2010. Retrieved 2010-09-13. 
  12. ^ "The latest BMW engine: N55 - found in the BMW 5 Series GT". Bmwblog.com. Retrieved 2012-05-30. 
  13. ^ a b "2011 BMW 740i / 740Li - First Drive Review - Auto Reviews". Car and Driver. Archived from the original on 16 September 2010. Retrieved 2010-09-13. 
  14. ^ "2011 BMW 335is First Drive". Insideline.com. 2010-01-27. Archived from the original on 21 September 2010. Retrieved 2010-09-13. 
  15. ^ CarAdvice.com.au (2012-02-13). "BMW 1-Series M Coupe Review". Car Advice. Retrieved 2012-05-30. 
  16. ^ Kavanagh, Jason (2011-05-25). "Dyno-Tested: 2011 BMW 1 Series M Coupe". Blogs.insideline.com. Retrieved 2012-05-30. 
  17. ^ May 2007 BY JARED GALL. "2008 BMW 5-series - First Drive Review - Car Reviews". Car and Driver. Retrieved 2012-07-27. 
  18. ^ "2011 BMW 335i Sedan - First Drive Review - Car Reviews". Car and Driver. 2012-07-22. Retrieved 2012-07-27. 
  19. ^ Paul Tan (July 5, 2008). "New BMW 7-Series F01 Specifications and Photos". Paul Tan's Automotive News. Archived from the original on 8 July 2008. Retrieved July 8, 2008. 
  20. ^ "InsideLine: 2011 BMW 740i Full Test". Bmwblog.com. 2011-02-25. Retrieved 2012-07-27. 
  21. ^ [5]
  22. ^ May 2007 BY JARED GALL. "V-8 with Extra Weight". Caranddriver.com. Retrieved 2012-07-27. 
  23. ^ Elsinore, Bradford (2010-06-25). "2011 BMW 740i First Drive". Insideline.com. Retrieved 2012-07-27. 
  24. ^ You must be logged in to post (2011-12-20). "2012 BMW 740i Sedan - Editors' Notebook - Automobile Magazine". Automobilemag.com. Retrieved 2012-07-27. 
  25. ^ "BMW 7-series Review: 2011 BMW 740i Test – Car and Driver". Caranddriver.com. Archived from the original on 28 August 2010. Retrieved 2010-09-21. 
  26. ^ "Kershaw, Cutter & Ratinoff takes on BMW in class action suit regarding defective HPFP BMW News at". Bimmerfest.com. Retrieved 2012-07-27. 
  27. ^ By  Zach Bowman RSS feed. "ABC News airs big exposé on BMW N54 engine problems, lawsuits [w/video] [UPDATE]". Autoblog.com. Retrieved 2012-07-27. 
  28. ^ Consumerist: BMW Recalls 150,000 Cars Over Fuel Pump Failures
  29. ^ "Bmw Law Suit Hpfp". Scribd.com. 2010-09-29. Retrieved 2012-07-27. 
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