Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > maXimum Tech > 3 Series > E30 (1983 - 1991)
User Name
Password


Welcome to Maxbimmer.com!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-28-2009, 03:16 PM   #1
Ceeker
Parts hoarding partner...
 
Ceeker's Avatar
 
Join Date: Nov 2007
Location: Toronto
Posts: 3,333
1990 325is auto- diff

Could anyone tell me if the diff( LSD) on a 90 325is auto is different from a 5 speed (LSD)?

thx
Ceeker is offline   Reply With Quote
Old 03-28-2009, 04:43 PM   #2
5thseries
biggerthen3
 
Join Date: Jun 2008
Location: Brampton
Posts: 722
Yes it is different

the auto dif is 4:10
manual diff is 3:75
(LSD)

Last edited by 5thseries; 03-28-2009 at 04:53 PM.
5thseries is offline   Reply With Quote
Old 03-28-2009, 05:36 PM   #3
///Mmm
Need an s85!
 
Join Date: Jun 2004
Location: Montreal
Posts: 222
Quote:
Originally Posted by 5thseries View Post
Yes it is different

the auto dif is 4:10
manual diff is 3:75
(LSD)
It's 3.73 to be specific hehe
///Mmm is offline   Reply With Quote
Old 03-28-2009, 05:45 PM   #4
Ceeker
Parts hoarding partner...
 
Ceeker's Avatar
 
Join Date: Nov 2007
Location: Toronto
Posts: 3,333
did all auto 325is's come with a 4:10 diff? I'm assuming because it is an "IS" that it has limited slip. unlike the 318is.

Thx.
Ceeker is offline   Reply With Quote
Old 03-28-2009, 05:51 PM   #5
ZiMMie
6th Gear Member
 
Join Date: Oct 2002
Location: T-Dot
Posts: 9,920
Send a message via ICQ to ZiMMie Send a message via MSN to ZiMMie
Quote:
Originally Posted by Ceeker View Post
did all auto 325is's come with a 4:10 diff? I'm assuming because it is an "IS" that it has limited slip. unlike the 318is.

Thx.
it depends on what date the car was manuf.
__________________


www.StanceFactory.com
ZiMMie is offline   Reply With Quote
Old 03-28-2009, 06:05 PM   #6
5thseries
biggerthen3
 
Join Date: Jun 2008
Location: Brampton
Posts: 722
Quote:
Originally Posted by ///Mmm View Post
It's 3.73 to be specific hehe
5thseries is offline   Reply With Quote
Old 03-28-2009, 06:30 PM   #7
everlast
if I lived . I would be ~
 
everlast's Avatar
 
Join Date: Mar 2004
Location: Ottawa
Posts: 5,847
You also had the choice of ordering a diff of your liking to some degree. Good way to check is to run the VIN, better way is to jack up the rear end, spin the tires and count the number of times the driveshaft turns.

Edit: That is, unless the metal tag is still on the back of the diff of course. Then just read it.
__________________
everlast is offline   Reply With Quote
Old 03-28-2009, 07:00 PM   #8
matty.dc
5th Gear Member
 
matty.dc's Avatar
 
Join Date: Feb 2008
Location: Hamilton
Posts: 1,108
Send a message via MSN to matty.dc
along the same lines....is a 325is 1987 auto a 4.10 diff?
__________________

1987 325is(Midnight Tuning Tuned OBD I S52) - Current Summer Car
2012 Hyundai Veloster Tech- Daily Driver
1985 318i - 1st Car (started it all)
matty.dc is offline   Reply With Quote
Old 03-28-2009, 07:41 PM   #9
craz azn
6th Gear Member
 
craz azn's Avatar
 
Join Date: Feb 2004
Location: Port Perry
Posts: 7,450
Send a message via MSN to craz azn
Didn't you just ask this exact same question a few days ago?
__________________

Rippin' Proper | Youtube | Vimeo |
craz azn is offline   Reply With Quote
Old 03-28-2009, 07:59 PM   #10
Ceeker
Parts hoarding partner...
 
Ceeker's Avatar
 
Join Date: Nov 2007
Location: Toronto
Posts: 3,333
I think so...my guess would be because the auto response is slower so it would need a taller diff to give it pick up.
Ceeker is offline   Reply With Quote
Old 03-28-2009, 08:06 PM   #11
craz azn
6th Gear Member
 
craz azn's Avatar
 
Join Date: Feb 2004
Location: Port Perry
Posts: 7,450
Send a message via MSN to craz azn
No, again, you don't seem to understand the terminology with this gear ratio thing. It needs a SHORTER diff to help the 'pick up' as you say. Not taller. Taller = longer = lower number.
__________________

Rippin' Proper | Youtube | Vimeo |
craz azn is offline   Reply With Quote
Old 03-28-2009, 08:11 PM   #12
5thseries
biggerthen3
 
Join Date: Jun 2008
Location: Brampton
Posts: 722
Quote:
Originally Posted by matty.dc View Post
along the same lines....is a 325is 1987 auto a 4.10 diff?
No, e30s from 1989 and up are 4:10. so no.
5thseries is offline   Reply With Quote
Old 03-28-2009, 08:32 PM   #13
craz azn
6th Gear Member
 
craz azn's Avatar
 
Join Date: Feb 2004
Location: Port Perry
Posts: 7,450
Send a message via MSN to craz azn
Quote:
Originally Posted by 5thseries View Post
No, e30s from 1989 and up are 4:10. so no.
Righto. Actually, I believe its 9/87+ when the autos came with 4.10s. But I'd have to look that up to be 100%.
__________________

Rippin' Proper | Youtube | Vimeo |
craz azn is offline   Reply With Quote
Old 04-18-2009, 11:14 PM   #14
W2WDETAILING
Banned
 
Join Date: Nov 2008
Location: East York
Posts: 1,264
Quote:
Originally Posted by craz azn View Post
Righto. Actually, I believe its 9/87+ when the autos came with 4.10s. But I'd have to look that up to be 100%.

sweet so i guess my plans to upgrade to a 4:10 diff are out the window since i have one
W2WDETAILING is offline   Reply With Quote
Old 04-18-2009, 11:47 PM   #15
Ceeker
Parts hoarding partner...
 
Ceeker's Avatar
 
Join Date: Nov 2007
Location: Toronto
Posts: 3,333
auto's 4:10 5sp 3:73. I got a 4:10 in my auto and a 3:73 in my 5sp. Even a 325i/4dr 5speed had a 3:73. Lsd-or at least the one I switched into my 318is was one.
Ceeker is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On

Forum Jump


All times are GMT -4. The time now is 03:03 PM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.