BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW M2 Forum > BMW M2 Discussions > Undercarriage Pics: M2 vs M235i vs M4

Post Reply
 
Thread Tools Search this Thread
      07-13-2015, 12:52 PM   #1
Celestion
First Lieutenant
164
Rep
388
Posts

Drives: '15 M235i (8AT) & '16 M3 (6MT)
Join Date: Aug 2014
Location: United States

iTrader: (0)

Undercarriage Pics: M2 vs M235i vs M4

To me, it looks like the M2's rear axle subframe bolts directly to the chassis, just like in the M4.

M4:
Name:  1a.jpg
Views: 16621
Size:  252.8 KB

Name:  1b.jpg
Views: 5696
Size:  251.8 KB

M2 test-mule:
Name:  1c.jpg
Views: 4707
Size:  601.5 KB

M235i:
Name:  1d.jpg
Views: 4368
Size:  108.3 KB
Appreciate 2
      07-13-2015, 01:27 PM   #2
twboy1999
Captain
251
Rep
863
Posts

Drives: 1994 honda accord
Join Date: Mar 2010
Location: toronto

iTrader: (2)

single exhaust pipe to the muffler

I guess this confirm the engine wont be s55 retuned
__________________
2019 M2 HS 10000km and counting
Appreciate 0
      07-13-2015, 01:41 PM   #3
Celestion
First Lieutenant
164
Rep
388
Posts

Drives: '15 M235i (8AT) & '16 M3 (6MT)
Join Date: Aug 2014
Location: United States

iTrader: (0)

Quote:
Originally Posted by twboy1999 View Post
single exhaust pipe to the muffler

I guess this confirm the engine wont be s55 retuned
Indeed. I actually prefer it this way though. I've test driven the M3 and I found the N55 acceleration curve to be a little less clinical feeling in comparison, despite being slower. The N55 exhaust note is more entertaining too.
Appreciate 0
      07-13-2015, 02:11 PM   #4
Haslamhazza
Private
67
Rep
99
Posts

Drives: Just got M2
Join Date: Nov 2013
Location: UK

iTrader: (0)

U can really see the cut outs in the sides of the bumper. I like😀
Appreciate 0
      07-13-2015, 02:12 PM   #5
IS3andME
Major
444
Rep
1,159
Posts

Drives: Lexus IS300
Join Date: May 2010
Location: Maryland

iTrader: (0)

Notice the M4's dual exhaust from front to back, and the M2 and M235i there is a single exhaust pipe from the "collector" on down?
Appreciate 0
      07-13-2015, 02:15 PM   #6
PackPride85
Major
United_States
777
Rep
1,241
Posts

Drives: M2
Join Date: Sep 2014
Location: NC

iTrader: (0)

The M diff is staring at us on the M2 pic.
Appreciate 0
      07-13-2015, 02:19 PM   #7
Celestion
First Lieutenant
164
Rep
388
Posts

Drives: '15 M235i (8AT) & '16 M3 (6MT)
Join Date: Aug 2014
Location: United States

iTrader: (0)

Quote:
Originally Posted by IS3andME View Post
Notice the M4's dual exhaust from front to back, and the M2 and M235i there is a single exhaust pipe from the "collector" on down?
Right. I presume that is because the M4 is twin-turbo and thus uses a separate exhaust pulse for each turbo. The N55 uses a single downpipe because it uses one turbo.
Appreciate 0
      07-13-2015, 02:28 PM   #8
IS3andME
Major
444
Rep
1,159
Posts

Drives: Lexus IS300
Join Date: May 2010
Location: Maryland

iTrader: (0)

Quote:
Originally Posted by Celestion View Post
Right. I presume that is because the M4 is twin-turbo and thus uses a separate exhaust pulse for each turbo. The N55 uses a single downpipe because it uses one turbo.
That's what I thought as well.
Appreciate 0
      07-13-2015, 02:46 PM   #9
tke743
Major
tke743's Avatar
United_States
699
Rep
1,035
Posts

Drives: MW ZCP M3
Join Date: Aug 2014
Location: Massachusetts

iTrader: (2)

Quote:
Originally Posted by PackPride85 View Post
The M diff is staring at us on the M2 pic.
Yes, cooling fins give that away. I like seeing the lighter, and stiffer, suspension members too.

Last edited by tke743; 07-14-2015 at 02:50 PM..
Appreciate 0
      07-13-2015, 02:52 PM   #10
MiguelY
Private First Class
MiguelY's Avatar
Canada
16
Rep
102
Posts

Drives: E92 M3/ '13 F800GS
Join Date: Apr 2015
Location: Winnipeg

iTrader: (0)

Mmmm Pretty cast pieces verses stamped ones.
Appreciate 0
      07-14-2015, 05:28 AM   #11
Reid
Lieutenant
Reid's Avatar
248
Rep
548
Posts

Drives: white cars
Join Date: May 2008
Location: HI

iTrader: (1)

Quote:
Originally Posted by Celestion View Post
To me, it looks like the M2's rear axle subframe bolts directly to the chassis, just like in the M4.
Those pictures don't show you the mating surface where the rear subframe meets the chassis.



Pc #4 in this diagram are bolts that fasten the rear subframe to the chassis.

However in the picture of the M2 above, it appears that the car has the M4's rear subframe. The difference between the 235 and M2/4 can be spotted in the additional holes inboard of the mounting points for the camber control arms. Also, the control arms on the M2/4 are aluminum compared to the stamped steel of the 235.

Last edited by Reid; 07-14-2015 at 07:28 AM..
Appreciate 1
      07-14-2015, 05:44 AM   #12
Railgun
Brigadier General
Railgun's Avatar
United Kingdom
976
Rep
3,086
Posts

Drives: FD, CBR600RR, F82
Join Date: Mar 2007
Location: 60606 --> SE3 --> ME14

iTrader: (2)

Garage List
2016 SMB M4  [0.00]
1993 Mazda RX-7  [0.00]
2007 Honda CBR600RR  [0.00]
Quote:
Originally Posted by Celestion View Post
Right. I presume that is because the M4 is twin-turbo and thus uses a separate exhaust pulse for each turbo. The N55 uses a single downpipe because it uses one turbo.
That doesn't actually matter. You could have a single pipe from a twin setup easily.

The pulses you refer to are all dealt with at the manifold, pre-turbo. Other than size for proper flow, how the exhaust is setup post turbo is somewhat irrelevant.

And you don't have a separate pulse per turbo else you'd have six of em. Manifold design is extra important when feeding a turbo (ideally runners that deliver even pulses at the turbo).

In the case of a twin exhaust setup, it may be packaging, but two pipes will flow more than a slightly larger single pipe.

That said, it's less expensive and lighter to have a single exhaust. If sized well for the application, more than likely a better solution than a twin exhaust.
Appreciate 1
      07-14-2015, 05:44 AM   #13
Aust350z
Captain
Aust350z's Avatar
Australia
218
Rep
696
Posts

Drives: F87 M2
Join Date: Oct 2013
Location: Australia

iTrader: (0)

Quote:
Originally Posted by Haslamhazza View Post
U can really see the cut outs in the sides of the bumper. I like😀
Yup thats what I noticed too. I like
Appreciate 0
      07-14-2015, 06:29 PM   #14
Bemo
Major
Bemo's Avatar
United_States
952
Rep
1,041
Posts

Drives: 911.1 GTS | E92M3 LRP Edition
Join Date: Feb 2012
Location: Connecticut

iTrader: (0)

A single exhaust pipe with a quad exhaust!
Munich is gunning for the murdered out 328-with-fake-quads, look! Lame.

Yeah I'm bitching, bite me.
I wanted this car to be everything it could be, patience be damned!! :
Appreciate 0
      07-14-2015, 08:34 PM   #15
W///
Lieutenant General
W///'s Avatar
4363
Rep
10,965
Posts

Drives: 08 E92 M3 /07 Z4MR / 99 E36 M3
Join Date: Sep 2011
Location: SC

iTrader: (13)

Quote:
Originally Posted by Bemo View Post
A single exhaust pipe with a quad exhaust!
Munich is gunning for the murdered out 328-with-fake-quads, look! Lame.

Yeah I'm bitching, bite me.
I wanted this car to be everything it could be, patience be damned!! :
Just really curious what you expected it to be? This is actually quite the norm as the 1M and E46 M3 have the exact same thing.
__________________
Current: E92 M3 Sparkling Graphite/Bamboo Beige/6MT. E36 M3 Techno Violet/Dove/5MT. E85 Z4MR Alpine White/Imola Red/6MT
Appreciate 0
      07-14-2015, 08:48 PM   #16
Bemo
Major
Bemo's Avatar
United_States
952
Rep
1,041
Posts

Drives: 911.1 GTS | E92M3 LRP Edition
Join Date: Feb 2012
Location: Connecticut

iTrader: (0)

Quote:
Originally Posted by W///
Quote:
Originally Posted by Bemo View Post
A single exhaust pipe with a quad exhaust!
Munich is gunning for the murdered out 328-with-fake-quads, look! Lame.

Yeah I'm bitching, bite me.
I wanted this car to be everything it could be, patience be damned!! :
Just really curious what you expected it to be? This is actually quite the norm as the 1M and E46 M3 have the exact same thing.
I expected more passion and a more hardcore approach, out of the gate! We'll have to wait until the CSL or next gen. Sigh. From a marketing and a model evolution strategy, a watered down initial version makes perfect sense though, I "get it!"
Appreciate 0
      07-14-2015, 09:17 PM   #17
GoSlow2GoFast
Private First Class
53
Rep
146
Posts

Drives: 2004 E46 M3
Join Date: Mar 2008
Location: RI

iTrader: (0)

Quote:
Originally Posted by W/// View Post
Just really curious what you expected it to be? This is actually quite the norm as the 1M and E46 M3 have the exact same thing.
Actually the E46 M3 has 2 pipes back, each handling 3 cylinders.

~gs2gf
__________________
Appreciate 0
      07-14-2015, 09:18 PM   #18
Artemis
Moderator
Artemis's Avatar
Belgium
12254
Rep
10,282
Posts

Drives: BMW M2C (BSM)
Join Date: Jun 2011
Location: Belgium

iTrader: (0)

Quote:
Originally Posted by Bemo View Post
I expected more passion and a more hardcore approach, out of the gate! We'll have to wait until the CSL or next gen. Sigh. From a marketing and a model evolution strategy, a watered down initial version makes perfect sense though, I "get it!"
Hm, let's talk again after the reveal. Maybe you're gonna be surprised.
__________________
///M is art Artemis
Appreciate 0
      07-14-2015, 09:20 PM   #19
W///
Lieutenant General
W///'s Avatar
4363
Rep
10,965
Posts

Drives: 08 E92 M3 /07 Z4MR / 99 E36 M3
Join Date: Sep 2011
Location: SC

iTrader: (13)

Quote:
Originally Posted by GoSlow2GoFast View Post
Actually the E46 M3 has 2 pipes back, each handling 3 cylinders.

~gs2gf
Ah, you're right. I stand corrected
Appreciate 0
      07-14-2015, 09:29 PM   #20
Bemo
Major
Bemo's Avatar
United_States
952
Rep
1,041
Posts

Drives: 911.1 GTS | E92M3 LRP Edition
Join Date: Feb 2012
Location: Connecticut

iTrader: (0)

Quote:
Originally Posted by Artemis View Post
Hm, let's talk again after the reveal. Maybe you're gonna be surprised.
Ahh, I expected you to chime in, "The Belgique BMW Geek"
Let me know about next year's gathering at the Dolomites, let's get our priorities straight.

And I hope you're right but let's not kid ourselves about a ton of compromises that will have to be accepted, along with the 1st generation M2. I wonder if this is some Cayman-like evolution whereby we get an "S" down the road, a GTS and then a GT4-like M2. Frankly, this couldn't happen soon enough. In the meantime folks like us will have to accept the current M2 or "settle" for an M3/4 or look elsewhere. Yes, all good problems, just a relative discussion here...that's all.

P.S. I'm not budging on wanting twin exhaust pipes...connected to proper twin-turbo motor!
Appreciate 0
      07-14-2015, 10:49 PM   #21
PackPride85
Major
United_States
777
Rep
1,241
Posts

Drives: M2
Join Date: Sep 2014
Location: NC

iTrader: (0)

Theres zero reason to split the pipes coming from a single turbo exhaust housing.
Appreciate 0
      07-15-2015, 04:44 AM   #22
Alpine*
Brigadier General
Alpine*'s Avatar
Australia
258
Rep
3,559
Posts

Drives: Changes pretty often
Join Date: May 2008
Location: Australia

iTrader: (0)

And the 1M had twin turbos with a single pipe through to the muff. The sound is what matters, besides I will likely look for an Akra anyway.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 11:07 AM.




m2
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST