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      02-17-2006, 11:51 AM   #1
EnI
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Exclamation Official: N54 engine with Bi-Turbo 306HP, 400Nm ...

From BMW Press Club Site (German):

N54 Bi-Turbo engine with HPI direct injection.
306HP, 400Nm available in range 1500 to 5800rpm. Max 7000 rpm. With full alluminium crankshaft casing, Bi-VANOS, electric water pump. 70kg less weight than 4.0L V8 NA engine. No turbo lag.

Tested in E90:
80-120kmh in 6.3s (eg. 330i in 8.2s)
0-100kmh in 5.7s (eg. 330i in 6.3s)

Last edited by EnI; 02-17-2006 at 01:03 PM.
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      02-17-2006, 11:55 AM   #2
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Quote:
Originally Posted by GregA
... from N54 I6 3.0L VTT DI engine (Euro specs).

According to BMW sources.

.....or any other type of substantiation.
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      02-17-2006, 12:04 PM   #3
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.......

Quote:
Originally Posted by Tine, 1/31/2006
Just for comparison - Euro order specs for E92 in my country according to some BMW dealer birdie here:

323i = N52
325i = N52 & N53
330i = N52 & N53
330d = M57
335d = M57
335i = N54 (225kW = 306HP)

Production starts in June. (*)
Delivery for our country (in Europe) in September. (Mind that we get some models later than e.g. Germany).

No more "Ci" / "Cd", just "i", "si" or "d" for the Coupe & Cabrio. (*)

4 new coulours coming with a E92 - Ultramarine Blue among them. (*)

19" wheels an option. (*)

More info available for public after mid February. (*)

(*) - this dealer birdie info also confirmed by my primary BMW birdie.

Last edited by EnI; 02-17-2006 at 12:51 PM.
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      02-17-2006, 12:21 PM   #4
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Tine was spot on the 335i exterior styling, engine specs and badging. I wonder why he made up all that stuff about SpeedFreak. Anyway, that fruitless discussion should be for a seperate thread.

The 335i is only 25hp away from the e46 M3. That's pretty cool because it's probably going to cost a whole lot less.
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      02-17-2006, 12:47 PM   #5
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i still wish it would make a little more power than that though... isn't 306hp what the IS350 is making? But then again if it does make more, not a lot of poeple would go for the new M3
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      02-17-2006, 12:51 PM   #6
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[quote=bimmer4me]

The 335i is only 25hp away from the e46 M3. QUOTE]


and with a lot more torque, although less aggresive gearing
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      02-17-2006, 12:51 PM   #7
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Quote:
Originally Posted by GregA
From BMW Press Club Site (German):

N54 Bi-Turbo engine with HPI direct injection.
306HP, 400Nm available in range 1500 to 5800rpm. Max 7000 rpm. With full alluminium engine block, Bi-VANOS, electric water pump. 70kg less weight than 4.0L V8 NA engine. No turbo lag.

Tested in E90:
80-120kmh in 6.3s (eg. 330i in 8.2s)
0-100kmh in 5.7s (eg. 330i in 6.3s)
GOOD GOD MAN!!! WHAT COUTRIES GET THIS BAD BOY?!?!
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      02-17-2006, 12:52 PM   #8
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not real happy about the turbo part of it. It's like they just slapped it on because of the IS350. And no turbo lag. Ya right.
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      02-17-2006, 12:53 PM   #9
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I'm wondering if it's a sequential turbo setup or a traditional parellel turbo.... I'm guessing since the motor is a straight design with only one exhaust manifold, it'll be a sequential setup.

If it did turn out to be sequential turbo, I would be concerned about longterm reliability. Toyota and Mazda had sequential turbos back in the 90's and they both had issues with long-term reliabiltiy. There is too much plumbing and controls involved in making the two turbos (one smaller and one larger) play together nicely.

We shall see....
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      02-17-2006, 12:58 PM   #10
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Quote:
Originally Posted by Craigar
not real happy about the turbo part of it. It's like they just slapped it on because of the IS350. And no turbo lag. Ya right.
bi-turbo is really good at reducing turbo lag though, and seeing how BMW value so highly of engine response, i'm sure it won't feel too different from N/A engines.
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      02-17-2006, 01:00 PM   #11
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Official Bi-Turbo Petrol Engine pics

Here she is
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      02-17-2006, 01:03 PM   #12
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Can someone please give a BRIEF description of the difference between a "sequential turbo" and a "traditional parellel turbo" setup. Thanks.
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      02-17-2006, 01:03 PM   #13
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Another
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      02-17-2006, 01:09 PM   #14
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Quote:
Originally Posted by bimmer4me
Can someone please give a BRIEF description of the difference between a "sequential turbo" and a "traditional parellel turbo" setup. Thanks.
Sequential turbos is where they have a small and a larger turbo. The small turbo is set to spool up first (quickly) because of it's size. After a certain rpm, a valve actuates the larger turbo to take over the smaller turbos duties. This is good because it gives you the benefits of both worlds: low end torque and high end horsepower.
Parellel turbos are where two identical medium sized turbos are bolted to half of the engine (3 cylinders per turbo). This setup is good because the turbos don't need to be very large, thus making their spoolup time quicker. Parellel turbos are better because of their simplicity (relatively speaking) compared to sequetial.
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      02-17-2006, 01:11 PM   #15
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From the looks of those pics, it looks like it's a traditional parellel setup. Take a look at the exhaust manifold on the first pic... You can see that there are two sepperate manifolds and a turbo mounted on each.
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      02-17-2006, 01:11 PM   #16
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Quote:
Originally Posted by GregA
From BMW Press Club Site (German):

N54 Bi-Turbo engine with HPI direct injection.
306HP, 400Nm available in range 1500 to 5800rpm. Max 7000 rpm. With full alluminium crankshaft casing, Bi-VANOS, electric water pump. 70kg less weight than 4.0L V8 NA engine. No turbo lag.

Tested in E90:
80-120kmh in 6.3s (eg. 330i in 8.2s)
0-100kmh in 5.7s (eg. 330i in 6.3s)
Am I reading these stats correctly? The 335i is only a half second quicker than the 330i? Please confirm.
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      02-17-2006, 01:12 PM   #17
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HOLY SHIT! that engine looks intense, no clue what all the parts are but it looks fancy lol
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      02-17-2006, 01:14 PM   #18
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Quote:
Originally Posted by voltron1011
From the looks of those pics, it looks like it's a traditional parellel setup.
Indeed. It's classic Bi-Turbo.

Words from BMW press release:

"In place of one large loader two smaller loaders supply in each case three cylinders with compressed air. Substantial advantage of the small dimensioned loaders is their small moment of inertia."
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      02-17-2006, 01:15 PM   #19
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Quote:
Originally Posted by GregA
Indeed. It's classic Bi-Turbo.

Words from BMW press release:

"In place of one large loader two smaller loaders supply in each case three cylinders with compressed air. Substantial advantage of the small dimensioned loaders is their small moment of inertia."


Good move BMW... KISS

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      02-17-2006, 01:16 PM   #20
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Quote:
Originally Posted by voltron1011
From the looks of those pics, it looks like it's a traditional parellel setup. Take a look at the exhaust manifold on the first pic... You can see that there are two sepperate manifolds and a turbo mounted on each.
Thanks for your description of each of these setups.

I'm an engine novice. Where are the exchaust manifolds? Where are the mounted turbos on them? Thanks again, voltron1011.
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      02-17-2006, 01:16 PM   #21
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i know there was a thread on this a while back, but now that it is a little more clear what type of turbo it will be, i need to ask: what are the main benefits of this specific turbo engine versus an NA?
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      02-17-2006, 01:17 PM   #22
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Google translation of press release:

The result is readable in the values of 225 kW/306 HP as well as the maximum torque of 400 Newtonmeters and witnesses from an impressing and already thrust using at low numbers of revolutions. Which means this for the driving experience, the engine developers by the example of a sedan of the BMWS of 3series row calculated: In acceleration from zero on 100 km/h the Bi-turbo--variant would be therefore faster around more than a half second, the elasticity value (80 to 120 km/h in the second highest course) could itself from 8.2 seconds for the strongest suction engine variant, which BMW 330i, on 6.3 seconds to improve. While maintaining the suction engine concept a such increase in dynamics would have been realizable only by a substantial extension of the capacity, connected with an appropriate gewichtszunahme and the effects resulting from it on the vehicle balance. On the other hand proves the employment of the turbocharger technology in connection with the High Precision Injection as a particularly efficient method, in order to fulfill still higher requirements to the achievement and the torque of the engine. To the comparison: The new Reihensechszylinder Bi turbo weighs about 70 kilograms less than a similarly high performance eight-cylinder August engine with a capacity of 4,0 litres. Beyond that exhibits the engine equipped with High Precision Injection opposite a equivalent strong turbo engine with suction tube injection a consumption advantage of approximately ten per cent.

Apart from the small weight and the values consumed favorable for its performance class the new Bi-turbo--drive can offer a further quality criterion of the row six cylinder engines of BMW. It offers outstanding quiet running and thus exactly that virtue, with which the row six cylinder engines became propulsion technology, cultivated recognized world-wide, from BMW to the yardstick for. Already the cylinder arrangement gives a balanced character to the engine concerning the free mass forces - also at high numbers of revolutions the engine acts vibration-free. In addition had also the turbo-variant of the six-cylinder of the suction engine particularly light cam shafts, the variable cam shaft adjustment double VANOS admitted as well as over an electrically operated water pump, which works only according to the respective cooling need.

The turbo-hole is past. With the new engine variant engineers of BMW succeeded in eliminating the construction dependent disadvantages of earlier turbo-prop engines. Therefore the loaded six cylinder of BMW does not show also for turbo engines to today typical characteristics: The thrust only using with delay is just as strange to the new drive as the high fuel consumption of conventional turbo aggregates. For a clearly more spontaneous achievement development provides in particular the Bi-turbo--concept. In place of a large loader two smaller copies supply in each case three cylinders with compressed air. Substantial advantage of the small dimensioned loaders is their small moment of inertia. Already the easiestImpulse, which the driver with the accelerotor pedal produces, is answered with immediate pressure build-up. The turbo-hole - that moment, which passes, until the loader takes up its work-promoting effect -, so far typical with loaded engines, is not perceptible therefore any longer. In driving the rating of the new turbo-prop engine resembles therefore the force development of a clearly capacity-stronger suction engine. 3.0 available the litre aggregate makes its imposantes torque of 400 Newtonmeters without noticeable delay and over the broad number of revolutions breakdown from 1500 to 5,800 min-1 away. And thus not enough: The engine winds up strong into the range from 7,000 min-1. The driver particularly experiences one sovereigns form of the dynamics, which it him permitted to complete also brisk acceleration maneuvers eases.
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