E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

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!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

 
 
Thread Tools Search this Thread Rate Thread Display Modes
Prev Previous Post   Next Post Next
Old 04-03-2012, 03:33 PM   #11
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 999
My Ride: '04 MB ZHP
Quote:
Originally Posted by wanganstyle View Post
I have a empty e46 non m case here, I had it clearanced to fit a 188mm LSD center. I can email you a photo if the clearancing required to fit if you really want to know. It's a decent amount. With a ring gear attached and no spacer to adjust the centerline, it still needed clearance of the case. This was a side project to building up a nice os giken aftermarket unit for e46non-m. Took some spares off the shelf and tried to play the retro fit game. I change diff bearings and set ring /pinion gaps for diff builds, so it doesn't scare me.

The e46 cast housing is designed to clearance open diffs for installation.

if you mess with the spacing bolt on top cap of the e36/30 LSD center capsule the spider gear will also need a spacer. This opens up another very expensive/time consuming can of worms. My suggestion? Don't go there.

Perhaps adapting the e30 bearings and races and spacing would be smarter.
The e30/36 stub axels use a different standard e46, the circlip position is different, geometry also. Will the dust shields all line up post if Frankenstein-diffed?




The e46m unit can be re geared with Oem m division ring and pinion to 3.23 and 3.15 ratio. LSD center can be clutch type or gin visco-lok. I just built one up for turbo use (3.15 e46m clutch LSD diff). This would allow non m cars to Pnp a LSD in matching ratio to a 6500 rpm engine with a m3 rear subframe swap.

The e46m rear diff can be configured with genuine BMW parts to have a 4 bolt front flange that will mate with non m 4 bolt driveshaft 4 bolt pattern, this would allow upgrade of e46m of diff without buying a zhp 6 bolt driveshaft

Also the late model 2005/6 325ci/cabrio 6 speed SMG cars have a 4 bolt driveshaft in 6 speed length, they run a ZF 6 speed gearbox with identical length and mounting position in the body to the e46m gearbox.
So I can take the ring and pinion from a 3.15 open diff and swap it to the M3 rear and it will reinstall it with perfect fit?
__________________
Hornung418 is offline   Reply With Quote
 

Tags
e36, lsd

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Censor is OFF





All times are GMT -5. The time now is 12:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use