Strasse Forged
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Forum > BMW M3 (F80) and BMW M4 (F82) General Forum

Post Reply
 
Thread Tools Search this Thread
      07-18-2014, 06:17 PM   #1
Ilia@IND
BimmerPost Supporting Vendor
Ilia@IND's Avatar
537
Rep
2,456
Posts


Drives: F82 M4
Join Date: Oct 2006
Location: Chicago

iTrader: (3)

Post F80 M3 / F82 M4 ETK parts diagrams in detail: a quick analysis

BIMMERPOST
     Featured on BIMMERPOST.com
Whenever BMW releases a new chassis and a new M car in particular, we watch for new information with anticipatory glee. All of us at IND have been working to gather info on the F8x M3/M4 daily, and today are happy to inform the BIMMERPOST community of that one of the biggest influxes of information in a chassis history is up and available for public viewing: all original BMW F8x M3/M4 parts diagrams are now live on RealOEM.com.

We'll take this opportunity to review some interesting parts diagrams, and comment on some of the unique aspects of the amazing F8x cars. The level of detail available in BMW's diagrams is uncanny, and F8x owners can discover the amazing engineering details that make their M cars special. While some of my notes on these components will be relatively pedestrian, I'm still excited at the opportunity to review these parts individually, piece by piece, before we really begin to tear in to our own M3 and M4 project cars.

Also see:

BMW M3 and BMW M4 Inside (part 1): The new M Servotronic.
BMW M3 and BMW M4 Inside (part 2): The Brake Systems.
BMW M3 and BMW M4 Inside (part 3): The new engine.
BMW M3 and BMW M4 Inside (part 4): Sound and Exhuast System.
BMW M3 and BMW M4 Inside (part 5): smartly light, rigid, precise.
BMW M3 and BMW M4 Inside (part 6): The new chassis.




Name:  f80m3-f82m4-parts-1.jpg
Views: 13350
Size:  99.2 KB

The M3/M4 has two airboxes with two air filters, providing ample air flow to the S55's two turbos.

Name:  f80m3-f82m4-parts-2.jpg
Views: 13018
Size:  53.6 KB

Name:  f80m3-f82m4-parts-3.jpg
Views: 15156
Size:  100.7 KB

Charged air travels through the very short intercooler piping and to the air to water intercooler. As most of you have read in the BMW press releases, BMW's focus was to keep the charge piping as short as possible to improve response. Note that each turbocharger has its own unique flow path to the intercooler, and the intercooler merges the pressurized intake flow before it enters the manifold.

Name:  f80m3-f82m4-parts-4.jpg
Views: 15942
Size:  81.0 KB

Name:  f80m3-f82m4-parts-5.jpg
Views: 12752
Size:  65.4 KB


The water cooling system includes a heat exchanger for the engine's water, which removes heat from the block, along with an additional heat exchanger to cool the liquid for the air to water intercooler, and two auxiliary coolers. The hose diagram illustrates how piping is run directly from the air to water intercooler to the front mounted heat exchanger. This exposes cooling liquid to direct airflow, while keeping charge air contained in the top mounted intercooler for extremely short charge piping and excellent turbo response.


Name:  f80m3-f82m4-parts-6.jpg
Views: 12240
Size:  78.9 KB

Name:  f80m3-f82m4-parts-7.jpg
Views: 12761
Size:  69.6 KB

Two major oil coolers are also found at the front of the car- a flat mounted engine oil cooler, and a DCT transmission oil cooler for DCT equipped cars.

Name:  f80m3-f82m4-parts-8.jpg
Views: 12092
Size:  73.9 KB

Name:  f80m3-f82m4-parts-9.jpg
Views: 13094
Size:  82.1 KB

Finally, two water pumps carefully regulate coolant flow- one mechanical pump responsible for coolant flow through the engine block, and one electric pump responsible for coolant flow through the turbochargers. The electric water pump can operate independently of the engine even when the car is not running, cooling the turbos once you've deactivated the car to prevent coking of engine oil inside the hot turbos- a major improvement in reliability over older turbo charged cars.

Name:  f80m3-f82m4-parts-10.jpg
Views: 12519
Size:  76.2 KB

Name:  f80m3-f82m4-parts-11.jpg
Views: 14754
Size:  96.8 KB

Name:  f80m3-f82m4-parts-12.jpg
Views: 12147
Size:  67.7 KB

BMW installed a host of chassis bracing on the new F8x cars to maximize chassis rigidity. A rigid body shell allows for the suspension arms only to control geometry change as the car navigates terrain, forcing the suspension arms to operate as intended.

Name:  f80m3-f82m4-parts-13.jpg
Views: 14379
Size:  88.4 KB

Name:  f80m3-f82m4-parts-14.jpg
Views: 16131
Size:  76.8 KB

The front and rear subframes are both extremely rigid fabricated pieces, with the rear being an especially impressive piece. Note the lack of space available for subframe bushings in the rear subframe- evidence of the rigid mounting that BMW has been promoting in their own literature. The rear subframe looks like something we are more accustomed to seeing in well engineered race cars than road going sedans! Additionally, the front skid plate acts as a chassis brace and is a stressed member, furthering the excellent rigidity of this car.


Name:  f80m3-f82m4-parts-15.jpg
Views: 20197
Size:  98.1 KB

Name:  f80m3-f82m4-parts-16.jpg
Views: 11623
Size:  59.1 KB

Name:  f80m3-f82m4-parts-17.jpg
Views: 13227
Size:  67.4 KB

BMW's new front and rear uprights are also very impressive designs- both feature bolt-on wheel bearings for easy service, large diameter high strength hardware for wheel lugs, and a very rigid design. A rigid yet lightweight upright is critical for great performance as the upright locates the wheel bearing and therefore is directly in control of the wheel's position relative to the car.

Name:  f80m3-f82m4-parts-18.jpg
Views: 11670
Size:  64.5 KB

BMW's shift consoles have always isolated noise and vibration well, but the bushing design leaves a bit to be desired with respect to shift feel. The bushings at the front of the console (part number 2 in the diagram) and the rear bushing (part number 15) allow for the console that supports the shifter to move slightly, pivoting the shifter as the driver moves the car through its gears. Fortunately many manufacturers produce short shift solutions for BMWs, and changing these bushings to more rigid pieces is one of the most important gains of these kits (more so than the reduced throw, in my opinion).

Name:  f80m3-f82m4-parts-19.jpg
Views: 11752
Size:  49.8 KB

There has been much ado about the new carbon driveshaft found in the F8x cars. This excellent piece will reduce rotating mass and improve engine response even further. As you can see BMW spared little expense in optimizing this car! Interestingly, the tail end of the driveshaft does not have a bolt flange like most older BMWs- here BMW M opts for a direct splined connection to the differential, allowing for the driveshaft to slip over the differential's input shaft splines. This driveshaft is of course also constructed from a single piece as opposed to the two piece construction of most BMW cars, eliminating the need for a center support bearing.


Name:  f80m3-f82m4-parts-20.jpg
Views: 12281
Size:  84.8 KB

Name:  f80m3-f82m4-parts-21.jpg
Views: 11838
Size:  74.1 KB

Name:  f80m3-f82m4-parts-22.jpg
Views: 11461
Size:  64.6 KB

Finally, we reach the famous M differential with its servo controlled locking mechanism. The servo can be clearly seen at the top of the differential case, toward the rear. You'll note that the lower differential pan has an array of cooling fins like most M differentials, but the arrangement has been improved a bit when compared to older M cars. Fins have been placed along the length of the lower cover, allowing for more cooling surface area while also giving the bottom of the differential a far lower profile than the previous M3, preventing expensive damage to the differential cover. This was not possible on previous M cars as the differential housing was a large one piece cast unit, as opposed to this F8x version which has a bolt on lower cover.

One other item of interest is the nose mount of the differential- the differential interfaces with its nose mount with some bushings, and the nose mount itself bolts to the subframe with more bushings. This is BMW's way of controlling noise, vibration, and harshness from the differential now that the subframe is solid mounted to the car.

I hope you’ve had as much fun looking at these images as I have. The new F8x M3/M4 is truly an incredible car. I'm honored to be at IND at a time when we can study and dissect this work of M engineering art, and I am excited to keep the BIMMERPOST community updated as we continue with technical analysis, data gathering, and general obsession over the new M!
__________________
Appreciate 0
      07-18-2014, 06:24 PM   #2
Money2536
Colonel
Money2536's Avatar
United_States
492
Rep
2,018
Posts

Drives: ' 15 M3 | '14 GT3
Join Date: Feb 2010
Location: The Villages, FL

iTrader: (1)

Thanks Ilia!
Appreciate 0
      07-18-2014, 06:31 PM   #3
Boostin FD
Lieutenant Colonel
Boostin FD's Avatar
United_States
57
Rep
1,671
Posts

Drives: R8 v10
Join Date: Jan 2010
Location: St. Louis

iTrader: (2)

Where's the blow off valve so I can vent it outside and make a swooooshhhh sound ;-). Ha!
__________________
2010 Audi R8
Appreciate 0
      07-18-2014, 10:37 PM   #4
mic_crispy
First Lieutenant
54
Rep
331
Posts

Drives: AW F80 \ s2k
Join Date: Mar 2013
Location: Orlando

iTrader: (0)

Quote:
Originally Posted by Boostin FD View Post
Where's the blow off valve so I can vent it outside and make a swooooshhhh sound ;-). Ha!
I know youre probably joking but i believe in sport+ it is meant to remain closed to stay in boost.
In other modes it isnt. I know if i put mine in comfort i can hear a blow off.
__________________
Appreciate 0
      07-18-2014, 11:55 PM   #5
Caelric
Banned
1
Rep
103
Posts

Drives: n/a
Join Date: Mar 2014
Location: San Diego/AFG

iTrader: (0)

Thanks for the parts diagrams. Good to know that the electric water pump continues after engine shut off, to cool down the turbos.

Also, wondering how much the intake airflow piping can be improved. Not much, it looks like from the pictures.
Appreciate 0
      07-19-2014, 12:23 AM   #6
kitw
Colonel
kitw's Avatar
197
Rep
2,955
Posts

Drives: 2015 M4, Sakhir Orange
Join Date: Jun 2007
Location: Bay Area, CA

iTrader: (19)

Awesome, thanks for sharing! The exposed bracing is beefy but man, the rest of that bracing is seriously beefcake!
__________________

DSC_3369 by Kit W, on Flickr
Appreciate 0
      07-19-2014, 11:46 AM   #7
GOLFFRR
BimmerPost Supporting Vendor
GOLFFRR's Avatar
1808
Rep
20,745
Posts


Drives: Golf Cart
Join Date: Mar 2009
Location: Solvang, CA/Camarillo, CA

iTrader: (4)

__________________

BEFORE YOU BUY YOUR NEXT BMW, PM ME FIRST WE CAN HOOK YOU UP!
David Aviles: bmwdavid@icloud.com - Cell:202-262-2900
If you have any issues getting a hold of David PLEASE PM me, I'm available everyday till 645pm!
Appreciate 0
      07-19-2014, 12:28 PM   #8
GregD
Captain
Belgium
43
Rep
726
Posts

Drives: all day long..
Join Date: Jan 2012
Location: Antwerp

iTrader: (0)

Thanks for the info and write-up!
Appreciate 0
      07-20-2014, 03:29 AM   #9
metrickid
Dinosaur supervisor
metrickid's Avatar
Sweden
1097
Rep
3,293
Posts

Drives: M˛
Join Date: Feb 2007
Location: Isla Nublar

iTrader: (0)

Nice info.
Appreciate 0
      07-20-2014, 06:03 AM   #10
rubber_ducky
Colonel
rubber_ducky's Avatar
190
Rep
2,764
Posts

Drives: roach coach
Join Date: Feb 2007
Location: boston-ish

iTrader: (20)

Great stuff. Thanks for posting
Appreciate 0
      07-20-2014, 12:11 PM   #11
unitz
Private First Class
unitz's Avatar
5
Rep
179
Posts

Drives: Audi
Join Date: May 2014
Location: FL

iTrader: (0)

Any carbon fiber cold air intakes in our future? lol
__________________
2015 M3 - Alpine White/Sahkir Orange DCT
2013 Audi A4 - [Gone]
Appreciate 0
      07-20-2014, 02:13 PM   #12
Suave
Major
Suave's Avatar
United_States
111
Rep
1,438
Posts

Drives: GT4 and M2 in progress
Join Date: Aug 2013
Location: Philadelphia, PA

iTrader: (0)

Awesome information, Thanks!
__________________
201X ???? Coming soon
2015 F80 M3 AW/SO - Going Going Gone!
Appreciate 0
      07-20-2014, 02:42 PM   #13
Boostin FD
Lieutenant Colonel
Boostin FD's Avatar
United_States
57
Rep
1,671
Posts

Drives: R8 v10
Join Date: Jan 2010
Location: St. Louis

iTrader: (2)

Quote:
Originally Posted by mic_crispy
Quote:
Originally Posted by Boostin FD View Post
Where's the blow off valve so I can vent it outside and make a swooooshhhh sound ;-). Ha!
I know youre probably joking but i believe in sport+ it is meant to remain closed to stay in boost.
In other modes it isnt. I know if i put mine in comfort i can hear a blow off.
But where is it? I didn't see it in the diagram nor was I able to locate it by quickly looking at the engine bay at the dealer.
__________________
2010 Audi R8
Appreciate 0
      07-20-2014, 03:38 PM   #14
CanAutM3
Major General
CanAutM3's Avatar
Canada
1912
Rep
9,125
Posts

Drives: 2015 M4 DCT
Join Date: Jan 2012
Location: Montreal

iTrader: (0)

Garage List
2015 BMW M4  [4.29]
2006 Audi S4  [0.00]
Thanks, that was an enjoyable read
Appreciate 0
      07-20-2014, 05:34 PM   #15
0-60Motorsports
Lieutenant Colonel
0-60Motorsports's Avatar
Bahrain
66
Rep
1,605
Posts

Drives: BMW M3 JB 04 Coupe
Join Date: Aug 2007
Location: Kingdom of Bahrain

iTrader: (1)

Send a message via AIM to 0-60Motorsports Send a message via MSN to 0-60Motorsports Send a message via Yahoo to 0-60Motorsports
Very Interesting. Thanks for posting this Ilia.
__________________
Current Mods: GC DA's, Eibach Sways, PF RTABs, RE RCAs, INTRAVEE II + Alpine KCA-420i, ///MFEST Badges, Screen protector for OEM 16:9 display, VCSL Bumper + Race Lip + CF Boot + CF Rear Diffusor, DIETZ TV in Motion, SuperSprint V1 Headers + Catless S-pipes + Res Sec 2 + Race Exhaust, Z8 Starter Button, Lamin-X, OEM CSL Steering, OEM CSL Interior, OEM CSL Intake, OEM CSL Roof, OEM CSL DME + TTFS Tune, BBS CH's, LIGHTWERKZ.... IG: @060Motorsports
Appreciate 0
      07-20-2014, 06:18 PM   #16
Park2670
General
Park2670's Avatar
United_States
210
Rep
18,166
Posts

Drives: I(R)
Join Date: Jan 2006
Location: UTAH

iTrader: (8)

Very cool stuff to look over. I am glad I am not the only one spending too much time on that site!
__________________
Appreciate 0
      07-21-2014, 05:11 PM   #17
Blipit_
Major
103
Rep
1,353
Posts

Drives: M
Join Date: Nov 2011
Location: bmw

iTrader: (0)

This info has been up on realoem for awhile.
Appreciate 0
      07-21-2014, 05:15 PM   #18
Sean@PSI
BimmerPost Supporting Vendor
135
Rep
4,677
Posts


Drives: 2016 Long Beach Blue X5 M
Join Date: Feb 2009
Location: Winter Park, FL

iTrader: (0)

Great post.

www.Realoem.com is a great resource for any BMW owner looking for Part #s and information on their BMW.
__________________

Sean | Precision Sport Industries (PSI) | Sean@precision-sport.com | www.precision-sport.com | FACEBOOK | 407.617.0372
Appreciate 0
      07-21-2014, 05:21 PM   #19
Evan@Tischer
BimmerPost Supporting Vendor
Evan@Tischer's Avatar
United_States
675
Rep
8,168
Posts


Drives: Honda Ridgeline
Join Date: Jul 2007
Location: Silver Spring, MD

iTrader: (45)

Send a message via AIM to Evan@Tischer
Appreciate 0
      07-21-2014, 05:26 PM   #20
Dackelone
European Editor
Dackelone's Avatar
Germany
2934
Rep
19,618
Posts

Drives: N54 e82
Join Date: Feb 2010
Location: Bayern, Germany

iTrader: (1)

Very nice job from the IND crew!
Appreciate 0
      07-21-2014, 05:28 PM   #21
Maz335i
BMW 4 Life...
Maz335i's Avatar
Canada
86
Rep
3,355
Posts

Drives: 2015 SO M3 (on order)
Join Date: Feb 2012
Location: Mississauga, Ontario

iTrader: (0)

Great info!
__________________
MODS: *** / M Sport + Performance / Meisterschaft / Challenge / MORR / more to come! ***
Appreciate 0
      07-21-2014, 05:32 PM   #22
W///
Major General
W///'s Avatar
1940
Rep
9,524
Posts

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

iTrader: (13)

Great post Ilia!
__________________
Current: 2008 BMW M3 Sparkling Graphite/Bamboo Beige/6MT. 1999 BMW M3 Techno Violet/Dove/5MT. Next: 2017 BMW M3
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
Forum Jump


All times are GMT -4. The time now is 07:14 PM.




f80post
f80post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
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