E90Post
 


GT Haus
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > ► LSD's @ Performance Gearing



Reply
 
Thread Tools Search this Thread
      05-16-2010, 03:17 AM   #1
ZSP.3R
Montreal R-Spec
 
ZSP.3R's Avatar
 
Drives: 'O6 330i Sport Package
Join Date: May 2010
Location: Montreal

Posts: 180
iTrader: (0)

Question ► LSD's @ Performance Gearing

I was browsing through the forum looking for LSD threads and stumbled upon a shop that sells them for all model BMW's... Couple of months back, people were talking about how they ONLY made these LSD's for 335 models. Well, not true and now considering the upgrade.


$2,500US to $3,000US upgrade; 3 year warranty + unlimited mileage!


Just curious to know what the "final drive limited slip #" means?







.
__________________
MARK ALEXANDER

▀▄ 'O6 330i | 6MT | Sport Package | Black Sapphire Metallic | Aluminum Trim | Black Dakota Leather | H&R Sport Cupkit | AFE Intake | Matte Black (Dipped)162's - BFGoodrich g-Force T/A KDW | 18mm Rear Spacers | ECS CF/Aluminum Strut Bar | M3 Sways | Depo Blacklines |
ZSP.3R is offline   Germany
0
Reply With Quote
      05-16-2010, 03:50 AM   #2
VTECaddict
Where'd my VTEC go?
 
VTECaddict's Avatar
 
Drives: 06 330i 6MT
Join Date: Mar 2009
Location: Las Vegas, NV

Posts: 4,542
iTrader: (4)

The final drive is the last reduction gear that power is transferred through in the drivetrain before it gets sent out to the wheels (ie, the differential). The higher the gear ratio (number) is, the shorter the gear is, and the higher the engine will rev for a given speed.

For example, lets say you swapped the stock 330i 3.15 ratio diff for one with a 4.10 ratio (the shortest one on that list). In 6th gear at 65mph with the stock diff, you would be turning about 2500rpm. With the 4.10 ratio diff, the engine would be running at about 3200rpm.

Shorter gear ratios can improve acceleration and in effect put more power to the ground, but it also means the top speed in each gear will be reduced and MPG will suffer accordingly due to increased RPMs.
__________________
AW/Terra | ZSP | ZPP | ZCW | iDrive | CA
Mods: BC BR | OEM Blacklines | M-tech rear | custom dual exhaust | M3 steering wheel | BMW SSK | ZHP shift knob | BMW Performance rep spoiler
Varrstoen ES1 19x9.5+20 Front, 19x11+25 rear
VTECaddict is offline  
0
Reply With Quote
      05-16-2010, 04:43 AM   #3
ZSP.3R
Montreal R-Spec
 
ZSP.3R's Avatar
 
Drives: 'O6 330i Sport Package
Join Date: May 2010
Location: Montreal

Posts: 180
iTrader: (0)

^^ Understood and approved! Thanks for answering!




.
__________________
MARK ALEXANDER

▀▄ 'O6 330i | 6MT | Sport Package | Black Sapphire Metallic | Aluminum Trim | Black Dakota Leather | H&R Sport Cupkit | AFE Intake | Matte Black (Dipped)162's - BFGoodrich g-Force T/A KDW | 18mm Rear Spacers | ECS CF/Aluminum Strut Bar | M3 Sways | Depo Blacklines |
ZSP.3R is offline   Germany
0
Reply With Quote
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 11:35 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