Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series & 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 01-03-2017, 04:50 PM
dynomite323 dynomite323 is offline
Registered User
Location: US
 
Join Date: Jan 2017
Posts: 2
Mein Auto: bmw 325i e46
Bmw engine swap

What engine will fit my bmw 325i e46 2004 would I need to adjust the body or will there be a perfect fit?


Sent from my SM-N900T using Bimmerfest mobile app_a__a2_
Reply With Quote
Advertisement
  #2  
Old 01-09-2017, 11:03 PM
kd7iwp kd7iwp is offline
Registered User
Location: Abbotsford, BC, Canada
 
Join Date: Feb 2012
Posts: 7
Mein Auto: 2001 325i
An M54b25 would fit great in there and you wouldn't need to do any modifications as far as I can tell.


Sent from my iPhone using Bimmerfest mobile app
Reply With Quote
  #3  
Old 01-13-2017, 06:38 AM
jaz123456 jaz123456 is offline
Registered User
Location: london
 
Join Date: Jan 2017
Posts: 9
Mein Auto: e46
Can someone help me

My office staff in Malaysia have offered me either their e46 m52 2.5 0r their
M52 2.8 Both cars ate in top form However
the road tax and insurance there is very high for both types

Their mechanic says i can replace either engine with a 6 cylinder MB 52 2.2 even a 2.0

Is this possible
what additional changes replacements are needed

would greatly appreciate some independent advise before I do it
Reply With Quote
  #4  
Old 01-13-2017, 09:16 AM
SPDSKTR SPDSKTR is offline
I'm a DlCK! So what?
Location: Birmingham, AL, USA
 
Join Date: Sep 2011
Posts: 2,341
Mein Auto: E46 ZHP TS2+ Coupe
A 2004 325i comes with an M54B25 engine. Stick with that and you'll have zero fitment issues and no modifications required.
Reply With Quote
  #5  
Old 01-13-2017, 09:55 AM
jaz123456 jaz123456 is offline
Registered User
Location: london
 
Join Date: Jan 2017
Posts: 9
Mein Auto: e46
Thanks

The Donee car is 2.5 or 2.8

I wish to take out the bigger engine from it and put in a 2.2 engine instead

This 2.2 is a lower cc engine r/tax and insurance is way cheaper

Thats why I wish to do this
because the r/tax and insurance is cheaper for the 2.2 emgine

Tbe question is will the 2.2 engine go in nicely What extras do I need to do
Reply With Quote
  #6  
Old 01-14-2017, 07:44 AM
marcozandrini marcozandrini is offline
Officially Welcomed to the 'Fest
 
Join Date: Feb 2014
Posts: 2,439
Mein Auto:
The donor engines are from M52 engine family. The engine in your car is from the M54 engine family. There are significant differences between the 2 engine families that make the proposed swap a real time and money black hole.

What's wrong with your car's engine?
Reply With Quote
  #7  
Old 01-14-2017, 08:06 AM
jaz123456 jaz123456 is offline
Registered User
Location: london
 
Join Date: Jan 2017
Posts: 9
Mein Auto: e46
Thanks
Mine.is e46 2.5/2.8 engine 6cyl m52/54
not sure which with or without Vanos
In UK tax n insurance too high for high cc cars
Want to drop a 2.2 engine into thr car
Is it simple
Reply With Quote
  #8  
Old 01-14-2017, 08:46 AM
Fast Bob's Avatar
Fast Bob Fast Bob is online now
Keeping it surreal
Location: Here, there, everywhere....
 
Join Date: Jun 2004
Posts: 38,982
Mein Auto: 2004 330Ci ZHP 3 pedals
Quote:
Originally Posted by jaz123456 View Post
Thanks
Mine.is e46 2.5/2.8 engine 6cyl m52/54
not sure which with or without Vanos
In UK tax n insurance too high for high cc cars
Want to drop a 2.2 engine into thr car
Is it simple
Read Marco`s Post #6....then, read it again....then, maybe once more, until you really understand it....
__________________
The road goes ever onward....
(R.I.P. Jever)

*Please support the Disabled American Veterans*

When faced with choosing between two evils, always go with the one you`ve never tried before....
Reply With Quote
  #9  
Old 01-14-2017, 08:48 AM
jaz123456 jaz123456 is offline
Registered User
Location: london
 
Join Date: Jan 2017
Posts: 9
Mein Auto: e46
Thanks for YOUR help
Reply With Quote
  #10  
Old 01-16-2017, 03:02 PM
SPDSKTR SPDSKTR is offline
I'm a DlCK! So what?
Location: Birmingham, AL, USA
 
Join Date: Sep 2011
Posts: 2,341
Mein Auto: E46 ZHP TS2+ Coupe
OP... the engine will not work unless you change out the wiring harness, the transmission, the ECU, the electronics... It's entirely too much work and not worth it. You'll spend significantly doing the swap than you'll save in the long run.

If you want something that doesn't cost as much to maintain and insure, go buy a Toyota Yaris.
Reply With Quote
  #11  
Old 01-16-2017, 03:06 PM
jaz123456 jaz123456 is offline
Registered User
Location: london
 
Join Date: Jan 2017
Posts: 9
Mein Auto: e46
I will just get a good 2.2 and maybe remap it
do a few other easier improvements and
Save the headache
Jas
Reply With Quote
  #12  
Old 01-17-2017, 06:36 AM
SPDSKTR SPDSKTR is offline
I'm a DlCK! So what?
Location: Birmingham, AL, USA
 
Join Date: Sep 2011
Posts: 2,341
Mein Auto: E46 ZHP TS2+ Coupe
It's a bit more complicated than just swapping the motor out and flashing a tune on the ECU. I'm sure you'll find that out once your wallet is empty and you're wondering why things aren't working.

I'm not trying to sound like an ass, but I don't think you understand what's involved in drastic motor swaps with these cars. If you went from an M54B25 to an M54B30, sure... you could probably get away with just a DME swap. But going from an M54 to an M52? You're in for a LOT more trouble than it's worth. If you just absolutely have to have a small-engine BMW, go find an old Z3 with the 1.8L or 1.9L four cylinder.

Last edited by SPDSKTR; 01-17-2017 at 11:45 AM.
Reply With Quote
Reply

See More Related BMW Stories


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series & 4 Series > E46 (1999 - 2006)
Today's Posts Search
Thread Tools
Display Modes

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 -7. The time now is 09:40 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms