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.

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 10-02-2015, 12:26 PM   #1
reeseheckman
Registered User
 
Join Date: Aug 2015
Location: Irvine
Posts: 21
My Ride: 2006 330ci ZHP
BMW e46 diff swap

Hey ive been wanting to swap the 3.46 diff from a 325i into my 330ci zhp (3.07). I just wanted to know how long it took someone to do and how hard it was? also what are the results, was it worth doing or keep it stock? Thanks
reeseheckman is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 10-02-2015, 01:28 PM   #2
rkneeshaw
Registered User
 
Join Date: Oct 2008
Location: Northern Michigan
Posts: 1,164
My Ride: 330i ZHP
Don't do it if you ever decide to add boost, it will be too short. But if you stay NA, then go for it, lots of guys like it.
__________________
2003 BMW 330i ZHP
ESS Twin Screw Stage 2 - Wavetrac - Headers - Magnaflow - BMW Performance Intake and SSK
Turner Motorsports Reinforcements and Spacers - Powerflex - StopTech

Build thread: http://forum.e46fanatics.com/showthread.php?t=696662
rkneeshaw is offline   Reply With Quote
Old 10-02-2015, 01:32 PM   #3
Rob43
Hates Non-Adj. Suspensions
 
Rob43's Avatar
 
Join Date: Oct 2009
Location: Richmond VA
Posts: 7,205
My Ride: 03 331Ci 5spd R1200R
Quote:
Originally Posted by rkneeshaw View Post
Don't do it if you ever decide to add boost, it will be too short. But if you stay NA, then go for it, lots of guys like it.
This +

If you source & buy a 3.38 diff, that will be a Straight Bolt-In; No Modifications needed. A 3.46 requires swapping flanges which is a PIA.



Rob43
__________________



Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 S.C.C.A.
(DynoDynamics https:vimeo.com/8486878 Dyno Video)
"Chance Favors The Prepared Mind"

NEW E46 Xi COILOVERS DISCOVERED FOR ~$729 SHIPPED
Quote:
Originally Posted by RacerX View Post
Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
I have a GREAT/CHEAP source on KONI SPORT Shocks & Struts at the moment !
Rob43 is offline   Reply With Quote
Old 10-02-2015, 02:26 PM   #4
reeseheckman
Registered User
 
Join Date: Aug 2015
Location: Irvine
Posts: 21
My Ride: 2006 330ci ZHP
thanks for the info I'll probably still stick with the 3.46 cuz I have a 6 speed and having the extra gear should help
reeseheckman is offline   Reply With Quote
Old 10-02-2015, 03:05 PM   #5
Rob43
Hates Non-Adj. Suspensions
 
Rob43's Avatar
 
Join Date: Oct 2009
Location: Richmond VA
Posts: 7,205
My Ride: 03 331Ci 5spd R1200R
Quote:
Originally Posted by reeseheckman View Post
thanks for the info I'll probably still stick with the 3.46 cuz I have a 6 speed and having the extra gear should help
Cool.

Let me know if you need any other performance related HP or Suspension needs, I know what works well on this chassis.



Rob43
__________________



Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 S.C.C.A.
(DynoDynamics https:vimeo.com/8486878 Dyno Video)
"Chance Favors The Prepared Mind"

NEW E46 Xi COILOVERS DISCOVERED FOR ~$729 SHIPPED
Quote:
Originally Posted by RacerX View Post
Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
I have a GREAT/CHEAP source on KONI SPORT Shocks & Struts at the moment !
Rob43 is offline   Reply With Quote
Old 10-03-2015, 03:12 PM   #6
reeseheckman
Registered User
 
Join Date: Aug 2015
Location: Irvine
Posts: 21
My Ride: 2006 330ci ZHP
Quote:
Originally Posted by Rob43 View Post
Cool.

Let me know if you need any other performance related HP or Suspension needs, I know what works well on this chassis.



Rob43
Do I have to replace the seals with the swap and is it a straight bolt in other than the flanges being different?
reeseheckman is offline   Reply With Quote
Old 10-03-2015, 03:57 PM   #7
Rob43
Hates Non-Adj. Suspensions
 
Rob43's Avatar
 
Join Date: Oct 2009
Location: Richmond VA
Posts: 7,205
My Ride: 03 331Ci 5spd R1200R
Quote:
Originally Posted by reeseheckman View Post
Do I have to replace the seals with the swap and is it a straight bolt in other than the flanges being different?

This should do it for you...

http://forum.e46fanatics.com/showthr...219&highlight=



Rob43
__________________



Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 S.C.C.A.
(DynoDynamics https:vimeo.com/8486878 Dyno Video)
"Chance Favors The Prepared Mind"

NEW E46 Xi COILOVERS DISCOVERED FOR ~$729 SHIPPED
Quote:
Originally Posted by RacerX View Post
Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
I have a GREAT/CHEAP source on KONI SPORT Shocks & Struts at the moment !
Rob43 is offline   Reply With Quote
Old 10-04-2015, 02:31 PM   #8
GuidoK
Registered User
 
Join Date: May 2013
Location: Netherlands
Posts: 290
My Ride: Z4 3.0i ESS TS2+
Quote:
Originally Posted by reeseheckman View Post
Do I have to replace the seals with the swap and is it a straight bolt in other than the flanges being different?
Yes you should always replace the seals if you have the chance. They're cheap too so thats a no brainer. (it is also strongly advised according to TIS)

Instead of a slidehammer (if you don't have one lying around) you can also use a 3 legged puller and a piece of bent metal like this:


The retaining clip inside is too stiff to pull the flanges off by hand, and prying it off can be difficult because of the metal dustshields on the flanges (do not damage those shields or you'll have flanges/shields that rotate against the diff with all the noise)

If on the car, bmw TIS advises to use a plastic hammer + normal hammer like this:



The method with prybars like described in the link is risky (bmw warns to not damage the dust shields)
__________________
E85 Z4 3.0i | ESS TS2+ | Quaife ATB LSD | Custom Brembo BBK front/rear | Schrick cams | Schmiedmann headers/cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers | Sachs performance clutch

Last edited by GuidoK; 10-04-2015 at 02:59 PM.
GuidoK is offline   Reply With Quote
Reply

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 08:39 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
(c) 1999 - 2016 performanceIX Inc - privacy policy - terms of use