10-02-2014, 12:04 PM | #1 |
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N55B30T0 vs. N55B30O0 - what will be the differences?
So, as the title states, I am wondering what you all think about what the N55B30T0 (M2 engine code) will contain vs. N55B30O0 (M235 engine code).
According to the naming designation chart imbedded below, the only difference in the designation relates to "output". We have been told that the M2 will push around 360-370 BHP. We have also seen some respectable opinions that the M235 N55 cannot push beyond 360 BHP reliably. http://www.2addicts.com/forums/showt...ckelone&page=6 So what gives, in your opinion? What will BMW do to the N55 to hit that mark?
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10-02-2014, 12:19 PM | #2 |
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Make the N55 breathe more..
The M2's engine will be about headers & intake. The n55 is a strong engine, but it needs some throttle control and more legs. Allowing for a slightly larger twin-scroll offset... & all forged internals for durability & strength. |
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10-02-2014, 12:28 PM | #4 |
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I hope the notion that this engine starts with an "N" and not an "S" does not mean that they won't change the engine internals! I think less than 360-370hp would be a disappointment given where the market will be in 2016.
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10-02-2014, 12:51 PM | #5 | |
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Hence why the S55 went back to two turbos, ala N54??? I was hoping we could get a little further than that.
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10-02-2014, 12:56 PM | #6 | |
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And we have heard that's in the range of what the M2 will produce... So...we could be getting an M235 N55 that has been dialed up with more boost and maybe better cooling. Aka - not that special. But if they spend considerable time making the squishy suspension better, that will go a long way in my mind.
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10-02-2014, 01:01 PM | #7 | |
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10-03-2014, 01:57 AM | #8 | ||
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It might stand for larger turbo. |
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10-03-2014, 02:20 AM | #9 |
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I suppose one way to reliably predict the increased estimated output difference from the M235 and the M2 is to establish an average ratio of differences between past "O" (Upper Output) engines and "T" (Top Output) engines of the same class (e.g., 335 vs. M3, 135 vs. 1M, 550 vs. m5, etc.).
This is assuming BMW will follow suit with this average "O" to "T" increase. Has anyone done this before?
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10-03-2014, 08:37 AM | #11 | |
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I know I don't have that info, maybe a little weekend homework.
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10-03-2014, 08:39 AM | #12 | |
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Would also likely mean that there would be more power on tap for those willing to look for it.
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10-03-2014, 08:45 AM | #13 |
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Claimed 360-370 crank hp will probably mean 360-370 whp, considering all BMW turbo engines are underrated. That is plenty IMO.
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10-03-2014, 10:39 AM | #14 | |
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The gasoline N54 has O0, O1, and T0 variants. The T0 was used in the 1M and Z4 is. Wikipedia (could be accurate ) shows these specifications for the N54: http://en.wikipedia.org/wiki/BMW_N54#Specifications Not much of a spread in power between the O1 and T0. Last edited by bimmerbuff; 10-03-2014 at 08:36 PM.. Reason: O for 0 |
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10-03-2014, 12:45 PM | #15 |
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Glad this point has been brought up before - definitely one worth investigating. I too may look further into this.
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10-07-2014, 11:05 AM | #16 | |
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What if we were to somehow get the N54B30T0? That's the engine in the 1M, 335is, and Z4is. 335 BHP, up to 370 ft. pounds with over-boost function. Think of what an awesome car THAT would be - Better looking than 1M (and that's saying something); New M3/4 suspension and brakes (booyah); Things you can't get on M235 - HUD, LED lights, CF roof, etc. Updated interior (maybe some special stitching?) HUGE tuning potential. My god, what a car that would be... BMW are you listening ????
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10-09-2014, 02:00 AM | #19 |
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To stay optimistic about the currently believed motor that'll be going into the M2...
1.) It has indefinitely and forever put the 4 cyl rumors to rest 2.) Who knows, this motor could be as punchy with an even greater tendency for reliability?
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10-09-2014, 08:37 AM | #20 |
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So our cars don't have direct injection according to this chart? because i am pretty sure they have both valvetronic and DI...
Should the engine be called N58? also the N54 had valvetronic just not second generation form what i understand? Is this chart still accurate? |
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10-09-2014, 09:03 AM | #21 | |
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In terms of the N55B30T0, the engine in the 1M was also only designated as "0T0" in terms of differences to the original N54. By analogy, if the "0T0" version of the N55 is that much better than the one we have in the M235, perhaps the M2 will be very good. I am still not holding my breath...
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10-09-2014, 09:08 AM | #22 | |
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Due to the strengthened internals mostly, only on the M performance models. Are the engines stamped with their code? Has anyone checked? Also from what i have read it was only 10 kW difference in output 0o0 to 0T0 |
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