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      02-08-2016, 11:10 PM   #23
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m235 - F80 - f87

US [kg (lbs)] 1590 (3505) 1601 (3530) 1565 (3450)


The M2 weighs 55 lbs less than the M235

1M weight is 77 lb (35 kg) lighter than the standard E82 coupe.

The 1M is 1495 Kg - 3296 lbs
The M2 is 1565 Kg - 3450 lbs
a M235 is 1590 Kg - 3505 lbs
The M4 is 1601 Kg - 3530 lbs


The M235i is 132 lbs heavier than the 135 and the M2 is 154 lbs heavier than the 1M.

Last edited by M3 Adjuster; 02-09-2016 at 02:00 AM..
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      02-08-2016, 11:31 PM   #24
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Interesting how the M235 has a coefficient of drag at 0.33 and the M2 is *less* slippery at 0.35

Apparently all the M aero guys were where ?

Perhaps it's a good thing they didn't get a chance to add " M mirrors " and slow it down some more, to the tune of 1M Cd of 0.37.....
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      02-08-2016, 11:53 PM   #25
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Quote:
Originally Posted by ///MIKE M
So its actually going to have a 8000rpm display??

Every car I've seen so far has only had a 7000

I would assume this is the correct info. Interesting to see a last minute change.
Correct I'm confused? :S
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      02-09-2016, 12:03 AM   #26
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Quote:
Originally Posted by M3 Adjuster View Post
Interesting how the M235 has a coefficient of drag at 0.33 and the M2 is *less* slippery at 0.35

Apparently all the M aero guys were where ?

Perhaps it's a good thing they didn't get a chance to add " M mirrors " and slow it down some more, to the tune of 1M Cd of 0.37.....
Hussein Al-attar describes the design of the front bumper. They sacrificed lower drag for more airflow into the front of the car.
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      02-09-2016, 12:03 AM   #27
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Excited to see what this Engine will do at the Dyno WHP/WTQ and how much different it is from a M235 other than the hardware they mention.
Hoping for great tuning 450whp easy 500wtq without upgrading anything =D
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      02-09-2016, 12:17 AM   #28
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Quote:
Originally Posted by ROBNYC View Post
Excited to see what this Engine will do at the Dyno WHP/WTQ and how much different it is from a M235 other than the hardware they mention.
Hoping for great tuning 450whp easy 500wtq without upgrading anything =D
My guess for "stage 1" tuning would be somewhere between the M235i and M4, or about 400-420whp w/ 93oct.
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      02-09-2016, 12:26 AM   #29
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Quote:
Originally Posted by zenmaster
Quote:
Originally Posted by ROBNYC View Post
Excited to see what this Engine will do at the Dyno WHP/WTQ and how much different it is from a M235 other than the hardware they mention.
Hoping for great tuning 450whp easy 500wtq without upgrading anything =D
My guess for "stage 1" tuning would be somewhere between the M235i and M4, or about 400-420whp w/ 93oct.
Full Akra with down pipe + tune is what I'll be after. Here's hoping for m4 base HP
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      02-09-2016, 12:52 AM   #30
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Interesting document
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      02-09-2016, 02:07 AM   #31
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A blow-off valve without diaphragm from the N20 engine is used in the N55B30T0 engine

Interesting.. !

I wasn't able to find any info on what turbo is used...but looking at the dyno charts provided it looks like the changes to the head and pistons and oiling allowed them to get more rpms at the top end in order to build more power so there is a useable 7k available ... .

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      02-09-2016, 02:59 AM   #32
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Quote:
Originally Posted by zenmaster View Post
My guess for "stage 1" tuning would be somewhere between the M235i and M4, or about 400-420whp w/ 93oct.
It's an old article from Nov,but Manhart reckon 450bhp

http://www.torquenews.com/1084/2016-...umps-out-450hp
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      02-09-2016, 03:14 AM   #33
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I would be happy with 450HP
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      02-09-2016, 03:28 AM   #34
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Very interesting reading.
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      02-09-2016, 04:28 AM   #35
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I wonder what happens if one deletes the centre silencer ?
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      02-09-2016, 05:12 AM   #36
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This is great reading but I can't help but think there are a few " bloopers " with the info.It does make me wonder whether this can be relied upon,some that I've made a mental note of:

1/ wheels in the tyre section are quoted as being cast.
2/ 0-60 has shot up from a quoted 4.1 sec (for Auto) to 4.4 sec.
3/ No mention of engine having a closed deck design
4/ Already been noticed,but 8000rpm display ?


Last edited by Nine Lives; 02-09-2016 at 05:26 AM.. Reason: Addition
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      02-09-2016, 05:42 AM   #37
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I had a laugh about this new airbox design !! There are a few of us on the forum that have performed this mod aka the "hole" already !! cool design
Quote:
Originally Posted by Strongbark View Post
I wonder how much R&D went into making the new airbox?
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      02-09-2016, 06:03 AM   #38
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Quote:
Originally Posted by Nine Lives View Post
This is great reading but I can't help but think there are a few " bloopers " with the info.It does make me wonder whether this can be relied upon,some that I've made a mental note of:

1/ wheels in the tyre section are quoted as being cast.
2/ 0-60 has shot up from a quoted 4.1 sec (for Auto) to 4.4 sec.
3/ No mention of engine having a closed deck design
4/ Already been noticed,but 8000rpm display ?

Hasn't "shot up". The document was published last Oct. The 0-60 numbers were changed on BMW's website in Jan.
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      02-09-2016, 07:41 AM   #39
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Quote:
Originally Posted by zenmaster View Post
Here's the section:


So now, it appears the single turbos are branded "twinscroll" (accurate) and the true twins "twinpower".

Perhaps in view of that lawsuit/public feedback regarding people confusing "twinpower" for twin turbos...
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      02-09-2016, 07:43 AM   #40
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Quote:
Originally Posted by Nine Lives View Post
This is great reading but I can't help but think there are a few " bloopers " with the info.It does make me wonder whether this can be relied upon,some that I've made a mental note of:

1/ wheels in the tyre section are quoted as being cast.
2/ 0-60 has shot up from a quoted 4.1 sec (for Auto) to 4.4 sec.
3/ No mention of engine having a closed deck design
4/ Already been noticed,but 8000rpm display ?

Block layout is not an often-mentioned feature. I wouldn't read into it too much. Not a blooper at least.
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      02-09-2016, 07:44 AM   #41
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Quote:
Originally Posted by ROBNYC View Post
Excited to see what this Engine will do at the Dyno WHP/WTQ and how much different it is from a M235 other than the hardware they mention.
Hoping for great tuning 450whp easy 500wtq without upgrading anything =D
Quote:
Originally Posted by zenmaster View Post
My guess for "stage 1" tuning would be somewhere between the M235i and M4, or about 400-420whp w/ 93oct.
What are you basing this on? We don't know what turbo is in the car yet.

Hopes and dreams?
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      02-09-2016, 07:48 AM   #42
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Quote:
Originally Posted by zenmaster View Post
Hasn't "shot up". The document was published last Oct. The 0-60 numbers were changed on BMW's website in Jan.
That's right and considering it's a technical document then it should have been updated straight away,same goes for the other pointers mentioned,unless this is a beta version of course.
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      02-09-2016, 08:47 AM   #43
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Quote:
Originally Posted by PrematureApex View Post
What are you basing this on? We don't know what turbo is in the car yet.

Hopes and dreams?
Basing it on the published BHP for M235i, M2, and M4. And the JB4 results from M235i and M4. The published BHP for M2 is right between the two. Common sense says the turbo cfm (and fueling) should scale to target hp.
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      02-09-2016, 09:02 AM   #44
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RPM clusters

As already pointed out, the technical training shows by mistake two different rpm clusters:
  • page 60: 7500rpm + redlining from 7000rpm onwards + "t/min x 1000" indicated next to the redline zone;
  • page 63: 8500rpm + redlining from 7500rpm onwards + "t/min x 1000" indicated under the ///M logo.
It appears that the 8000rpm did not make it to the final cut for the base M2. Oh well, they may still dig that up for the purely hypothetical M2 CSL instrument cluster.

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Below: base M2 instrument cluster as seen during recent car shows (check also the fuel level meter: more subdivisions + fuel consumption meter indicates up to 30 l/100 km):

Daylight (white backlight):
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Dusk till dawn ("orange night-time illumination"):
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