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      09-16-2012, 02:31 PM   #23
Btdew
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True,


There are so many things that could happen. For all we know they might enhance the 3 cil to a certain point just for 125i, like they did for their new BMW i8 car. But i don't know how cost effective that would be.

Imo, i don't see the 125i getting the new 3 cilinder, i think thats pushing the power available in that engine (enhanced versions not included). It wouldn't compare good to the power the 125i now has unless i'm missing something...
The new 125i might get a stronger 4 cil or just stay the way it is.

It's probably gonna be equal, but i see more future in the petrol versions of the new engine than diesels if we look at performance they can give.

To make it look simple i think: all minis (except JCW versions), 114, 116, 316, 318 the new engine for sure.

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      09-16-2012, 03:59 PM   #24
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In 1992 the BMW 325i had similar power figures from a 6 cyl, and 28 MPG highway, so for this engine to get 56 MPG given the increase in electronics, safety, and ultimately weight of modern cars, is impressive.

but why no 6-speed?
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      09-16-2012, 05:54 PM   #25
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Originally Posted by fusion01 View Post
'New' inline six? The N55 will most likely run for quite some time and the M135i is a good indication of what is now available, with 320 HP stock (and probably more when actually strapped to a dyno). The M3 might run a newer iteration altogether but that is some ways down the line.

As to the article, and 500cm3 being optimal, it's ironic in my case insofar as recent cars owned:

Golf 5 GTI: 2 litre / 4 cylinder
BMW 135i: 3 litre / 6 cylinder
Ford Focus ST: 2.5 litre / 5 cylinder

... all 500cm3
I just meant BMW's next turbo inline six, whenever it may come out. I'm hoping it will launch with the F32 as is rumored. There is plenty of historical precedent for this, as far as I remember the 3 series sedan launches with old engines and then the coupe comes with a new engine the next year.
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      09-16-2012, 09:09 PM   #26
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Its sad to see BMWs being sold with only half an engine.

I'd take a 1990's 325i over this - mainly for the six cylinder sound.
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      09-17-2012, 07:51 AM   #27
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True, The new Six will be launched with the F32 in a repeat story as the 2006 launch of the E92 brought the first modern BMW Turbo engine - The N54.
so it seems then, that the 2 series, which i believe is to be launched a few months earlier than the f32, will be released with the n55. how long i wonder will it soldier on with the "old" engine before switching over to the new one?
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      09-17-2012, 08:16 AM   #28
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I doubt it that 2 serie would be launceh before F32 since we haven't even seen the test mules for it yet. F32 is already out testing. makes me wonder what happened to 2 series
i do remember reading that the release is supposed to be within a few months of the f32 but perhaps it was a few months later rather than sooner.
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      09-17-2012, 11:31 AM   #29
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so it seems then, that the 2 series, which i believe is to be launched a few months earlier than the f32, will be released with the n55. how long i wonder will it soldier on with the "old" engine before switching over to the new one?
it occurs to me that i ignored the possibility that the 2 series may not have 6cyl. engines at all given the previous chatter that even the m2 would be 4cyl.

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      09-17-2012, 12:02 PM   #30
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How can this 3 cylinder use a twin-scroll turbocharger? Don't you need an even number of cylinders for that to work?

I am remembering back to discussions of the F80 and people talking about whether it would be an I6 or V6 engine and what turbo arrangement it would have. Someone would speculate that it could be a "V6 with 2 twin-scroll turbochargers" or that it could be a "parallel twin turbo setup like the N54 but with twin-scroll turbos" and other people would quickly shoot down those ideas because "twin-scroll only works with an even number of cylinders".

Were the people shooting down the idea of having a twin-scroll turbo for each pair of 3 cylinders wrong? Or maybe were they were right but not because it would be working off an odd number of cylinders but because of some other problem with using 2 twin-scroll turbos with 6 cylinders?

I am really curious because the BMW press release definitely said that these new 1.5L I3 engines could come turbocharged, twin-scroll turbocharged, or twin turbocharged.

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      09-17-2012, 02:03 PM   #31
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it occurs to me that i ignored the possibility that the 2 series may not have 6cyl. engines at all given the previous chatter that even the m2 would be 4cyl.
I think the expectation is that the base will be the N20 4-cylinder with the N55 being the larger engine option. E.g.:

228i - N20 turbo I4
235i - N55 turbo I6
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      09-17-2012, 03:31 PM   #32
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I think the expectation is that the base will be the N20 4-cylinder with the N55 being the larger engine option. E.g.:

228i - N20 turbo I4
235i - N55 turbo I6
I have also read news on this site saying that all future 1 and 2 series models would use 4 cylinder engines at the largest. As in the M2 would also have some sort of I4 engine. This really isn't so surprising when you consider that journalists have already been test driving Mercedes's upcoming A45 AMG and CLA45 AMG which have turbo 2.0L I4 engines making 350 horsepower.

BMW could easily make that sort of number by starting with their N20, maybe boring it out a little, maybe upgrading to a twin turbo setup, and then just tuning it more aggressively.
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      09-17-2012, 04:11 PM   #33
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Originally Posted by tuna_hp View Post
How can this 3 cylinder use a twin-scroll turbocharger? Don't you need an even number of cylinders for that to work?

I am remembering back to discussions of the F80 and people talking about whether it would be an I6 or V6 engine and what turbo arrangement it would have. Someone would speculate that it could be a "V6 with 2 twin-scroll turbochargers" or that it could be a "parallel twin turbo setup like the N54 but with twin-scroll turbos" and other people would quickly shoot down those ideas because "twin-scroll only works with an even number of cylinders".

Were the people shooting down the idea of having a twin-scroll turbo for each pair of 3 cylinders wrong? Or maybe were they were right but not because it would be working off an odd number of cylinders but because of some other problem with using 2 twin-scroll turbos with 6 cylinders?

I am really curious because the BMW press release definitely said that these new 1.5L I3 engines could come turbocharged, twin-scroll turbocharged, or twin turbocharged.
There was an article on bimmerpost i think where it said it will have a mono scroll something seeing you can only go double from 4 cilinders and upwards. Its there somewhere...
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      09-17-2012, 04:12 PM   #34
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Originally Posted by tuna_hp View Post
I have also read news on this site saying that all future 1 and 2 series models would use 4 cylinder engines at the largest. As in the M2 would also have some sort of I4 engine. This really isn't so surprising when you consider that journalists have already been test driving Mercedes's upcoming A45 AMG and CLA45 AMG which have turbo 2.0L I4 engines making 350 horsepower.

BMW could easily make that sort of number by starting with their N20, maybe boring it out a little, maybe upgrading to a twin turbo setup, and then just tuning it more aggressively.
Then the 135i will be the only 6 cil engine then. Imo they should atleast ut a 6 cil in the M cars, even a future 1 or 2
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      09-17-2012, 06:25 PM   #35
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Then the 135i will be the only 6 cil engine then. Imo they should atleast ut a 6 cil in the M cars, even a future 1 or 2
Totally agree. I think the only reason BMW wouldn't do that is to encourage customers into buying a larger car such as the M3.
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      09-17-2012, 08:47 PM   #36
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Then the 135i will be the only 6 cil engine then. Imo they should atleast ut a 6 cil in the M cars, even a future 1 or 2
Maybe. You could also make reasonable argument that M cars are about performance, not smoothness (which is the argument that people were already starting to make when faced with a possible V6 M3) and that the E30 was an I4.

I think the point is that an I6 is an awkwardly long engine to accomodate, and with the general trend being towards 3 and 4 cylinder engines for cars of that weight class, why sacrifice optimization to a 4 cylinder engine just so that you can fit an I6?
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      09-22-2012, 12:46 AM   #37
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Originally Posted by tuna_hp View Post
I have also read news on this site saying that all future 1 and 2 series models would use 4 cylinder engines at the largest. As in the M2 would also have some sort of I4 engine. This really isn't so surprising when you consider that journalists have already been test driving Mercedes's upcoming A45 AMG and CLA45 AMG which have turbo 2.0L I4 engines making 350 horsepower.

BMW could easily make that sort of number by starting with their N20, maybe boring it out a little, maybe upgrading to a twin turbo setup, and then just tuning it more aggressively.
The only flaw in this logic is the existence of the M135i which is already on the market with an N55 six cylinder engine. There's no way the coupe will only have four cylinders if the hatchback has six.
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      09-22-2012, 01:50 AM   #38
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By the sounds of this BMW talk, it looks likely that this new 3 pot will replace the 4 pot in the 116i as the entry level motor with the 2 lt (125i) as the mid and the 135i as the top in the next release.

For those who say and want the in-line 6 to remain for many years. It's biggest issue is that BMW like all others may have to face increased impact ratings +10km on their DRS soon. A 10km increase doesn't sound much but it will make a hugh diffence on crumple zone design and length.

It is easier to increase a collision rate zone without increasing the front length of the car with a four or now a 3 pot or a V6 in the engine bay, as there is phisically more room in front of it and they can put crash rails on the fire wall to push down a short motor.
If BMW has to comply to more stringent regulations on crumple zone speeds they would be forced to either make the engine bays longer for any model with the 6 to incorporate the zones or build a V6 (two 3 pots in in V) I would not bank on the straight 6 being there forever if these new DRS come in.
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