E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > LSD - Limited Slip Differential for e90



Reply
 
Thread Tools Search this Thread
      03-08-2006, 03:20 PM   #1
Thavee
Private
4
Rep
85
Posts

 
Drives: E90
Join Date: Sep 2005
Location: BKK.TH

iTrader: (0)

Garage List
2005 e90  [0.00]
LSD - Limited Slip Differential for e90

Hello,

Does e90 come with LSD? If not, is it available in the market right now?

Thanks
Appreciate 0
      03-08-2006, 03:35 PM   #2
HRC
MAUI BUILT
HRC's Avatar
United_States
140
Rep
7,779
Posts

 
Drives: 2006 330i MT
Join Date: Jun 2005
Location: NORCAL

iTrader: (10)

Garage List
2006 330i  [0.00]
Send a message via AIM to HRC
No OEM LSD

I have not seen any aftermarket ones yet.

Danny
__________________
Arctic/Blk Leather/Alum.Trim/MT/ZSP/Sunshades/Blk Lines/M3 Illuminated Knob/Alcantara Performance Wheel/M-E-Brake Handle/Euro Fog Switch/Koni Yellows/H&R Sport Springs/19" VMR V718's w/PS2 Tires/M-Tech Body Kit/Carbon Fiber Spoiler/Bimmian Interior Bulbs/OEM Eye Glass Tray/SSK/Alcantara Boot/Split Armrest/OEM Dual Rear Power Outlets/Rear Ashtray Delete/OEM Alum. Pedals/Osram 6000K/Brex Rings/LED Side Markers/BMS Power Box
Appreciate 0
      03-08-2006, 03:46 PM   #3
Oz
Lieutenant Colonel
Oz's Avatar
United_States
18
Rep
1,770
Posts

 
Drives: 2006 330i, 2004 X5
Join Date: Aug 2005
Location: Wayne, NJ

iTrader: (1)

Garage List
2006 330i  [0.00]
Send a message via AIM to Oz Send a message via MSN to Oz
What does LSD do?
__________________
2006 330i Steptronic/Alpine White/Black Leather/Burl Walnut Trim/Premium Package/iDrive/Heated Seats/Winter: STYLE 159 Blizzak LM-22 RFT/Summer: TBD
2004 X5 Steptronic/Alpine White/Grey Leather/Poplar Trim/Premium Package/Heated Seats/iPod Adapter
Appreciate 0
      03-08-2006, 04:08 PM   #4
Thavee
Private
4
Rep
85
Posts

 
Drives: E90
Join Date: Sep 2005
Location: BKK.TH

iTrader: (0)

Garage List
2005 e90  [0.00]
LSD does several things for serveral type of roads. Actually, it just makes sure both of your rear wheels spin equally.

If you get in to a right hard turn (high speed), you car starts to roll outward. Your left wheels take most of the weight tranfer. Your right wheels have lesser force to be pressed on the road (due to the weight transfer), and then the rear wheel (inside) starts to spin freely. Car slows down.

I just focus on the rear wheels only. Limited slip diff. helps you get out of the turn faster. That is for race purpose.

For rallying or drag racing, they work quite the same.

Thavee
Appreciate 0
      03-08-2006, 04:08 PM   #5
Squawks
One of my two dachshunds:
Squawks's Avatar
United_States
15
Rep
663
Posts

 
Drives: B6 A4 3.0 Quattro
Join Date: Aug 2005
Location: Ithaca, NY

iTrader: (0)

Send a message via AIM to Squawks
http://www.club4ag.com/faq%20and%20t...ential_101.htm

http://www.howstuffworks.com/differential.htm

A little too much for me to write in a post - plus figures help you learn.

EDIT: Let me attempt to be concise:

The differential is just a device to convert the engine's torque into two outputs so that it can be delivered to the two wheels (in the E90's case, the two rear wheels).

Open differentials are standard. Torque is split evenly between the two wheels.

However, during offroading conditions (or aggressive conditions), one of the drive wheels may slip whether that's due to being stuck in the air, slipping on water/ice/dirt, or cornering extremely fast. When you corner very fast, the outer wheel travels a longer distance and has to spin more.

The LSD solves this problem. If a wheel slips, it will transfer torque from the slipping wheel to the other wheel so that torque is not wasted in the slipping wheel. The LSD is perhaps best felt for offroaders or heavy auto x'ers.
__________________
I'm sorry about my outlandish behavior - there's too much blood in my alcohol system.
Appreciate 0
      03-08-2006, 04:14 PM   #6
M3ti Compact
Private First Class
M3ti Compact's Avatar
5
Rep
106
Posts

 
Drives: E36 318ti, E90 325i
Join Date: Feb 2006
Location: Toronto

iTrader: (0)

Garage List
1995 BMW 318ti  [0.00]
2006 BMW 325  [0.00]
LSD is a mechanical form of traction control in the diff. When one wheel is spinning faster than the other, it will direct power to the slower wheel.

You will not notice the difference between LSD and non-LSD unless your really pushing it into corners, or if your producing a crazy amount of HP.

When you do push a non-LSD car into a hard corner, you might unweight the inside rear wheel and all the power will be sent to that wheel- spinning it like crazy but not propelling the car forward. LSD prevents this.

Same story if you got too much power- by the way that car torques under accell, or just uneven road surface, rain, snow etc, you might start spinning one wheel, and once this happens on a non LSD car, all the power goes to that spinning wheel- wasting power- LSD prevents this too.

BMW's stopped equipping their cars with LSD's because they got the electronic traction control to take it's place instead- which isn't as good because it overheats brakes and cuts engine power- but LSD diffs cost at least 5x more than regular non-LSD diffs.
Appreciate 0
      03-08-2006, 04:16 PM   #7
shimshimhada
Brigadier General
shimshimhada's Avatar
United_States
87
Rep
4,839
Posts

 
Drives: Portal
Join Date: Jul 2005
Location: Portal

iTrader: (2)

Quote:
Originally Posted by Thavee
LSD does several things for serveral type of roads. Actually, it just makes sure both of your rear wheels spin equally.

If you get in to a right hard turn (high speed), you car starts to roll outward. Your left wheels take most of the weight tranfer. Your right wheels have lesser force to be pressed on the road (due to the weight transfer), and then the rear wheel (inside) starts to spin freely. Car slows down.

I just focus on the rear wheels only. Limited slip diff. helps you get out of the turn faster. That is for race purpose.

For rallying or drag racing, they work quite the same.

Thavee
Don't forget about drifting.
Appreciate 0
      03-08-2006, 04:45 PM   #8
timzerofive
there is no spoon
timzerofive's Avatar
38
Rep
866
Posts

 
Drives: 330i manual
Join Date: May 2005
Location: Irvine

iTrader: (0)

Garage List
2006 330i  [0.00]
I hope quaife makes one soon. I know they do custom orders if they have similar production models. But it seems like they don't have applications for E46 even. So let's say E30 or E36 has similar differential then E90, and all they need is to alter a few small components, we might be able to get them to do one small production run for us. On my old car we had them did one run of 25 LSD's for us on the 3G eclipse. They were willing to do it because it had the same differential as the 2G, and all they had to do was reverse the parts (since 2G has transversed motor while 3G didn't). We got enough people together and dropped deposits and go it done. Perhaps we can get people here too.
__________________
Appreciate 0
      03-08-2006, 04:45 PM   #9
bimmer4me
Captain
bimmer4me's Avatar
United_States
16
Rep
997
Posts

 
Drives: 2006 330i
Join Date: Apr 2005
Location: Northern Virginia

iTrader: (0)

Garage List
2006 330i  [0.00]
So do xDrive equipped e90s essentially have LSD capabilities then?
__________________

2006 330i Monaco Blue | Grey | Walnut
...Manual | Sports | Premium | Cold | Nav | Comfort Access | PDC | Sirius | Sunshade
...M-Tec Steering Wheel | M-Tec Shifter | TLC
...Performance Center Delivery | Oct 14, 2005
Appreciate 0
      03-08-2006, 05:00 PM   #10
Robin_NL
S0THPAW
Robin_NL's Avatar
Netherlands
82
Rep
4,696
Posts

 
Drives: AW 1M , Assetto Corsa
Join Date: Apr 2005
Location: The Netherlands, Europe

iTrader: (0)

www.drexler-motorsport.com have one (up to 100% locking just like the current M3), one of my friends has a 130i with this limited slip diff. Great sliding and perpetual sideways motion(AND you have TRACTION)

BUT the 130i's gearing and differential differs a bit from the 330i's gearing and diff.

Prices vary but for about 1,900 EUROS you get your LSD
and then they'll take your 'old' open diff back.
Appreciate 0
      03-08-2006, 05:03 PM   #11
Robin_NL
S0THPAW
Robin_NL's Avatar
Netherlands
82
Rep
4,696
Posts

 
Drives: AW 1M , Assetto Corsa
Join Date: Apr 2005
Location: The Netherlands, Europe

iTrader: (0)

Quote:
Originally Posted by bimmer4me
So do xDrive equipped e90s essentially have LSD capabilities then?
Those are electronically locking diffs, our normal 330i rwd has also a electronically locking diff(or better say, that's the DSC/DTC you feel kicking in, just by stopping the wheels from spinning etc) but that's not what we want, we want the inner wheel not to spin anymore and bring its energy/power to the outside wheel(and vice versa) for more traction and more fun.
Appreciate 0
      03-08-2006, 05:05 PM   #12
F32Fleet
BMWCCA since '03
F32Fleet's Avatar
United_States
69
Rep
5,331
Posts

 
Drives: 2015 435i
Join Date: May 2005
Location: Atlanta (Vinings)

iTrader: (0)

I believe the E30 was the last 3-er to be sold with LSD. All M cars have LSD.
Appreciate 0
      03-08-2006, 05:08 PM   #13
Robin_NL
S0THPAW
Robin_NL's Avatar
Netherlands
82
Rep
4,696
Posts

 
Drives: AW 1M , Assetto Corsa
Join Date: Apr 2005
Location: The Netherlands, Europe

iTrader: (0)

Quote:
Originally Posted by bimmer4me
So do xDrive equipped e90s essentially have LSD capabilities then?
Those are electronically locking diffs, our normal 330i rwd has also a electronically locking diff(or better say, that's the DSC/DTC you feel kicking in, just by stopping the wheels from spinning etc) but that's not what we want, we want the inner wheel not to spin anymore and bring its energy/power to the outside wheel(and vice versa) for more traction and more fun.

Try to make a macho power on U turn when stepping on the gas on wet tarmac(When traffic allows it) in 1'st gear in your normal E90 with an open diff and the DTC/DSC shut off.

Almost nothing happens but a lot of wheelspin. No U turn.
With a LSD you get your beautiful U turn and oversteer plenty.
Appreciate 0
      03-08-2006, 09:40 PM   #14
StevoSEA
Second Lieutenant
StevoSEA's Avatar
United_States
2
Rep
227
Posts

 
Drives: E90 325i(SA) TiAg/Blk ZSP 6mt
Join Date: Dec 2005
Location: Long Beach, Ca

iTrader: (0)

Quote:
Originally Posted by Thavee
Hello,

Does e90 come with LSD? If not, is it available in the market right now?

Thanks
no. and no.
Appreciate 0
      03-08-2006, 09:47 PM   #15
larryn
Major General
United_States
143
Rep
8,444
Posts

 
Drives: '97 332ti, '10 E92 M3
Join Date: May 2005
Location: Seattle

iTrader: (2)

The guys I do driving events with work for diffsonline. They mentioned to me last fall that they had a e90 diff, with optional lokup rates. http://diffsonline.com/

I've never done business with them, but I have read in other forums of people who have, and were satisfied.
Appreciate 0
      03-08-2006, 10:08 PM   #16
0700700
Major
0700700's Avatar
Bulgaria
31
Rep
1,056
Posts

 
Drives: 745li / cls 55
Join Date: Dec 2005
Location: BG

iTrader: (0)

get kleemann to make you one :P
__________________
2007 CLS55 AMG / 2003 BMW 745Li
Appreciate 0
      03-08-2006, 10:14 PM   #17
David328M-Sport
Brigadier General
Australia
45
Rep
3,464
Posts

 
Drives: F30 M-Sport 328i Estoril Blue
Join Date: Jun 2005
Location: Melbourne Australia

iTrader: (0)

Does a street car that is need an LSD?
I personallly think not.
__________________
328i M-Sport, Estoril Blue, Carbon XP 35 Tint, front heated seats, black Dakota, Sports Suspension, Anthracite Headliner, HUD, Pro Nav, Sunroof, hk 600w, Bi-Xenon, 19" 403M wheels, Reversing Camera, DAB+, Xenon, BT Ext Connect.
Appreciate 0
      03-09-2006, 12:19 AM   #18
visor
BMW, can I have some LSD please?
visor's Avatar
Canada
39
Rep
1,540
Posts

 
Drives: '13 F30 328xi
Join Date: Jun 2005
Location: Vancouver, Canada

iTrader: (0)

When the 335i comes out with the N54 turbo engine with 306hp, it had better come with an LSD or else there's gonna be a lot of wheel slipping happenin' when powering out of corners.

If or when the LSD exists, then maybe it can be retrofitted into the 330i/325i E90...
__________________
2006 330i | TiAg | Black | Al | 6MT | Sports Package | Logic 7 retired
2008 335i | AW | Black | Al | 6MT | Sports Package | Logic 7 retired
2013 328xi | Red | Gray | Al | 8AT | Sports Line | Premium | Executive | Heat Pkg
Appreciate 0
      03-09-2006, 03:10 AM   #19
JonMad
Second Lieutenant
JonMad's Avatar
2
Rep
235
Posts

 
Drives: 320d SE;Mazda MX-5
Join Date: Oct 2005
Location: Hampshire, UK

iTrader: (0)

Garage List
1990 Mazda MX-5  [0.00]
2005 BMW 320d  [0.00]
Quote:
What does LSD do?
<----------------------

sorry, couldn't resist
Appreciate 0
      10-20-2010, 11:35 AM   #20
N0OS3
Colonel
N0OS3's Avatar
United_States
41
Rep
2,220
Posts

 
Drives: E90
Join Date: Feb 2010
Location: Oak Harbor, WA

iTrader: (5)

Quote:
Originally Posted by Thavee View Post
Hello,

Does e90 come with LSD? If not, is it available in the market right now?

Thanks
**********s.com sells one, but it's like $3,750+ not including installation. I was looking to get one too, but it messes with your DTC from what i'm told from TurnerMotorsports.com. Like, in corners and cruise control take-off, the DTC will ERROR and shut off, but while on the Highway, the DTC and cruise will still work.
Appreciate 0
      10-20-2010, 11:44 AM   #21
ruxp
Captain
16
Rep
700
Posts

 
Drives: 2008 BMW 335xi
Join Date: Dec 2007
Location: Minneapolis

iTrader: (1)

strong bump
Appreciate 0
      10-20-2010, 11:55 AM   #22
Kolyan2k
Brigadier General
60
Rep
3,962
Posts

 
Drives: 2006 S2000
Join Date: Apr 2010
Location: Boston

iTrader: (1)

Both 335i and xi don't have lsd(s)

Lsd is for performance as well as for safety in rain and snow.....most people forget that its a safety feature too.
Appreciate 0
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 07:58 AM.




e90post
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