BMW M3 Forum (E90 E92)

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


Go Back   M3Post - BMW M3 Forum > M3 (E90 / E92 / E93) > General M3 Forum (E90 + E92 + E93)
 
PYSPEED
Post Reply
 
Thread Tools Search this Thread
      03-15-2007, 12:24 AM   #1
swamp2
Lieutenant General
swamp2's Avatar
United_States
215
Rep
10,201
Posts

 
Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (1)

335i features I hope the M3 gets

Just read an article about some interesting innovations used in the 335i that insure as much of the engines power gets to the drivetrain as possible. I sure hope these (or more/better) are included in the M3. It sounds like there is quite a few hp to be had through these techniques.
  • Electric water pump (not belt driven)
  • Variable flow oil pump
  • Magnetic A/C clutch that fully disengages when not in use
  • Intelligent alternator that charges only when coasting/braking
Appreciate 0
      03-15-2007, 03:53 AM   #2
esquire
Colonel
esquire's Avatar
United_States
58
Rep
2,801
Posts

 
Drives: 2011.5 Dakar Yellow M3 Coupe
Join Date: Feb 2007
Location: Orange County, California

iTrader: (0)

swamp, do they explain the magnetic A/C clutch in any more detail in that article? i'm curious to read about it. if you could, please post a link to the article.
__________________

[ESS VT2-625] [Akrapovic Evolution Exhaust] [KW Clubsports] [OSS Angel Eyes] [Revinora r-CRT Lip]
[Vorsteiner Boot] [Challenge Race Diffuser] [See the Build Thread HERE]
Appreciate 0
      03-15-2007, 11:49 AM   #3
swamp2
Lieutenant General
swamp2's Avatar
United_States
215
Rep
10,201
Posts

 
Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (1)

There was little detail

Maybe one sentece, maybe two. No further explanaion. It was in one of the recent MT, C&D, R&T.
Appreciate 0
      03-17-2007, 10:24 AM   #4
ase2dais
//Mdicted
ase2dais's Avatar
United_States
127
Rep
9,875
Posts

 
Drives: a Cop Magnet
Join Date: Sep 2005
Location: 495 Ring

iTrader: (17)

Garage List
Quote:
Originally Posted by swamp2 View Post
Just read an article about some interesting innovations used in the 335i that insure as much of the engines power gets to the drivetrain as possible. I sure hope these (or more/better) are included in the M3. It sounds like there is quite a few hp to be had through these techniques.
  • Electric water pump (not belt driven)
  • Variable flow oil pump
  • Magnetic A/C clutch that fully disengages when not in use
  • Intelligent alternator that charges only when coasting/braking
the impression I got is that this will be the already existing M5 engine, just cut off the last extra 2-cyclinders. Eureka! /M3!
Appreciate 0
      03-17-2007, 10:48 AM   #5
T Bone
Brigadier General
T Bone's Avatar
145
Rep
4,021
Posts

 
Drives: 2008 335xi Coupe
Join Date: Feb 2007
Location: The land where we kill baby seals

iTrader: (0)

Quote:
Originally Posted by swamp2 View Post
Just read an article about some interesting innovations used in the 335i that insure as much of the engines power gets to the drivetrain as possible. I sure hope these (or more/better) are included in the M3. It sounds like there is quite a few hp to be had through these techniques.
  • Electric water pump (not belt driven)
  • Variable flow oil pump
  • Magnetic A/C clutch that fully disengages when not in use
  • Intelligent alternator that charges only when coasting/braking
If the M3 engine is based on the S85 V10, it will have many more goodies. At the end of the day, it is just about power output and the features you listed above are nice. There is a thread on the M5board where EVOsport is offering a smaller crank pulley, it dynos to add around 25 hp but this increase in HP has not reflected in trapspeeds or faster quartermile times.

The M3 engine should adopt the variable oil pump from the V10....but it will also have these other goodies that the N54 doesn't have:
  • Quasi-dry sump oil system
  • Heads and Block casted at the Landshut foundry facility which does the BMW F1 engines
  • Bedplate Crank for stiffness and lower inertia mass
The M3 engine is going to be killer.....
__________________
"Aerodynamics are for people who cannot build engines"......Enzo Ferrari
Appreciate 0
      03-17-2007, 11:07 AM   #6
E36325is
Second Lieutenant
Hong Kong
5
Rep
220
Posts

 
Drives: 1M coupe
Join Date: Dec 2006
Location: Hong Kong

iTrader: (0)

Hope it will have 4 pot brakes, too, still don't understand why Bimmer is extremely stubborn abt this? Just increasing the disc size with the ancient single fixed caliper, I'm gonna upgrade my 335i front brakes next month they can barely do the job in stock form.
Appreciate 0
      03-17-2007, 04:51 PM   #7
esquire
Colonel
esquire's Avatar
United_States
58
Rep
2,801
Posts

 
Drives: 2011.5 Dakar Yellow M3 Coupe
Join Date: Feb 2007
Location: Orange County, California

iTrader: (0)

Quote:
Originally Posted by E36325is View Post
Hope it will have 4 pot brakes, too, still don't understand why Bimmer is extremely stubborn abt this? Just increasing the disc size with the ancient single fixed caliper, I'm gonna upgrade my 335i front brakes next month they can barely do the job in stock form.
what kind of a "job" are you talking about? going from 100-0mph in 30 feet? the stock brakes on the 335 have been rated amongst the strongest stock brakes out there. you'll actually find a scanned article to that effect on the forum. they do the job more than aptly... unless of course you're looking to do some drifting near a cliff.
__________________

[ESS VT2-625] [Akrapovic Evolution Exhaust] [KW Clubsports] [OSS Angel Eyes] [Revinora r-CRT Lip]
[Vorsteiner Boot] [Challenge Race Diffuser] [See the Build Thread HERE]
Appreciate 0
      03-17-2007, 04:59 PM   #8
imolazhp_ci
Major
12
Rep
1,002
Posts

 
Drives: Z4 M Coupe
Join Date: Jan 2007
Location: orange county

iTrader: (0)

Quote:
Originally Posted by E36325is View Post
Hope it will have 4 pot brakes, too, still don't understand why Bimmer is extremely stubborn abt this? Just increasing the disc size with the ancient single fixed caliper, I'm gonna upgrade my 335i front brakes next month they can barely do the job in stock form.
BMW's single piston calipers stop your car faster thn 98% of cars on the road. so for everyday driving... they stop shorter than most porsches. the 330ci ZHP stops in 108 ft from 60. thats about 4 ft shorter than a 996 turbo.
Appreciate 0
      03-17-2007, 09:39 PM   #9
skierman64
Brigadier General
skierman64's Avatar
United_States
43
Rep
3,068
Posts

 
Drives: 2008 E92 Space Gray M3 & E36M3
Join Date: Dec 2006
Location: Greater St Louis Metro area

iTrader: (1)

Garage List
1998 M3 Coupe  [0.00]
2008 M3 Coupe  [0.00]
Send a message via Yahoo to skierman64
A front engine car stopping shorter than a rear engine car is quite an accomplishment. They must be doing something right in the brake department. For the guy upgrading the brakes, are you doing a lot of driving on the track?

A/C clutch -- I thought that every car had a magnetic A/C clutch that disengaged when not in use. Therefore when you're not using the A/C you are only turning a pulley but not the entire compressor. I'm pretty sure that's how all the cars I have ever owned have worked.

Last edited by skierman64; 03-17-2007 at 10:05 PM.
Appreciate 0
      03-17-2007, 09:58 PM   #10
T Bone
Brigadier General
T Bone's Avatar
145
Rep
4,021
Posts

 
Drives: 2008 335xi Coupe
Join Date: Feb 2007
Location: The land where we kill baby seals

iTrader: (0)

Quote:
Originally Posted by E36325is View Post
Hope it will have 4 pot brakes, too, still don't understand why Bimmer is extremely stubborn abt this? Just increasing the disc size with the ancient single fixed caliper, I'm gonna upgrade my 335i front brakes next month they can barely do the job in stock form.

The main reason is unsprung weight. Those 4 / 6 / 8 pot calipers come at a hefty weight penalty. Unsprung weight is the mortal enemy of handling.

This is a sore spot for me too. As a roadcar, floating calipers are fine but as a trackie, you really need at least 4 pot calipers or bigger for a car that is 3600+ pounds.

I remember once, I was following a Z28 SS (floating calipers like BMW) down a straightaway, I saw the brake lights but he ran right off the end of the track. We looked at his brakes and they taco'ed. The brake caliper instead of being a uniform "U" was a wide open "V". At full extension, the pads didn't even touch the rotors.....

So if you track your Bimmer, get some aftermarket brakes. For a road car, they are fine.
__________________
"Aerodynamics are for people who cannot build engines"......Enzo Ferrari
Appreciate 0
      03-21-2007, 01:20 PM   #11
goldminer
Lieutenant
Canada
7
Rep
453
Posts

 
Drives: 2011 SG E92 M3, 6MT
Join Date: Feb 2006
Location: Toronto, Ontario, Canada

iTrader: (0)

[quote=skierman64;779077 ...
A/C clutch -- I thought that every car had a magnetic A/C clutch that disengaged when not in use. Therefore when you're not using the A/C you are only turning a pulley but not the entire compressor. I'm pretty sure that's how all the cars I have ever owned have worked.[/QUOTE]


I don't know about every car but my old 1981 Ford F250 work vehicle had one. I hardly consider it leading edge technology.

Last edited by goldminer; 03-21-2007 at 04:34 PM.
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 -5. The time now is 06:11 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, 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