323Ci (M52tuB25) to M54B30 Complete Conversion, with MS43.0 DME and Drive By Wire - E46Fanatics 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

Go Back   E46Fanatics > Tuning & Tech > E46 Engine Swaps

E46 Engine Swaps
Replacing your motor? From direct replacements to more exoctic engines, if it's going under the hood of an E46 3 Series this is the forum to discuss it.

Reply
 
Thread Tools Search this Thread Rating: Thread Rating: 244 votes, 5.00 average. Display Modes
Old 12-24-2014, 02:34 AM   #1
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 259
My Ride: 323Ci M54B30 / MS43
323Ci (M52tuB25) to M54B30 Complete Conversion, with MS43.0 DME and Drive By Wire

As I mentioned in my header build thread,

https://forum.e46fanatics.com/showthr...844&highlight=

a buddy of mine was DD'ing. Long story short, I egged him on to drive the car hard and he money-shifted it. Based on gear ratios and engine speed when he shifted, I calculated 8500 RPM. I suspect a bent valve, causing rough idle, but won't know until I tear the M52tuB25 down.

So, I purchased a 100,000 mile M54B30 from a local guy, complete with MS43.0 DME, EWS, key, and tumbler. I am just about to drop the 3.0 liter in the car. I only have 1 week to do it (Christmas shutdown at work), and spent 13 hours on Monday pulling the engine and transmission (what a BEAR!). The last 2 days have been spent researching the drive by wire conversion and swapping the old parts (accessories, oil pan with baffle, headers, etc.) and installing new parts (water pump, coolant hoses, valve cover gasket, Vanos seals, etc.). I had to visit a junkyard to get the harness connector for the new throttle pedal and to get the pins on the DME side so that I can wire in the new pedal. More on the conversion later, it is very late and I need some sleep.

Here are some pictures of me pulling the engine. I had to remove the front bumper and core support to facilitate removing the engine and transmission as one assembly through the front of the car.



I also removed the intake so I could easily get the straps onto the rear engine hook without having the strap wrap over the intake and put stress on it.



I also removed the exhaust and driveshaft, pulled the shift knob off, and popped off the rear bushing on the shifter assembly, allowing me to pull the whole shift assembly with the transmission. I then disconnected all wires that went to the chassis and pulled the whole harness with the engine. I also had to remove the right side engine mount bracket, and the left side rubber engine mount to allow for clearance between the front frame rails.

Here's a picture of the exhaust and secondary pipes/collectors still on the car. It has held up very well, especially since the exhaust and headers have been through 2 track days and 45,000 miles.



As you can see, there's a pretty bad oil leak, which I later found to be a combination of the oil pan gasket, rear main seal, and oil filter housing. I guess its a good thing I'm replacing the engine now, as these problems would be a pain to do in the car (well some of them aren't hard to fix, but whatever).

Engine coming out. Yes, those are ratchet straps, yes it's ghetto, and yes I've done it a bunch of times. One of these days, one will fail, I'll drop an engine on the ground, and I'll learn my lesson. Moving on...





Here's a picture of the header attached to the old M52tuB25. Pretty good shape. The heat shield did its job. No problems with the valve cover gasket. Headers are not cracked or deformed, and are showing good signs given the abuse they've seen.



They did, however, have one problem. One of the brackets I made to mount the heat shield, which was a crappily made after-thought, cracked.



I welded it back together, and braced them all up with a triangle brace. Please excuse the crappy welds. I'm in a huge hurry to finish this project and didn't take my time to make it nice.



Here are the headers installed on the M54B30.



And now with the heat shield on.



New coolant hard lines.



I thought this was a cool picture.



I replaced a bunch of parts. Waterpump, thermostat, all new gaskets (intake, throttle body, exhaust manifold, oil pan, rear main seal, Vanos seals, valve cover gasket, oil filter housing gasket), new coolant hard and soft lines (the small ones). I also had to buy a new throttle pedal for the drive by wire, got wiring harness connectors for the new pedal from a junkyard.

Anyway, that's it for now. I plan to install the 3.0 liter tomorrow, and start working on the new DME conversion.
Attached Thumbnails
Click image for larger version

Name:	20141221_142906.jpg
Views:	4585
Size:	126.9 KB
ID:	584647   Click image for larger version

Name:	20141221_164933.jpg
Views:	4320
Size:	154.6 KB
ID:	584649   Click image for larger version

Name:	20141221_144157.jpg
Views:	5344
Size:	89.5 KB
ID:	584651   Click image for larger version

Name:	20141221_205404.jpg
Views:	4466
Size:	107.8 KB
ID:	584653  

Click image for larger version

Name:	20141221_205905.jpg
Views:	5030
Size:	120.6 KB
ID:	584654   Click image for larger version

Name:	20141221_214151.jpg
Views:	4656
Size:	91.5 KB
ID:	584655   Click image for larger version

Name:	20141222_201809.jpg
Views:	4172
Size:	75.8 KB
ID:	584656   Click image for larger version

Name:	20141223_223649.jpg
Views:	4381
Size:	102.0 KB
ID:	584657  

Click image for larger version

Name:	20141223_235439.jpg
Views:	5490
Size:	86.6 KB
ID:	584658   Click image for larger version

Name:	20141223_235523.jpg
Views:	4796
Size:	95.9 KB
ID:	584659   Click image for larger version

Name:	20141224_001111.jpg
Views:	4191
Size:	84.2 KB
ID:	584660   Click image for larger version

Name:	20141224_001204.jpg
Views:	5178
Size:	86.2 KB
ID:	584661  

__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
shm21284 is offline   Reply With Quote
Old 12-24-2014, 07:45 AM   #2
NyC35AV
Registered User
 
Join Date: Jan 2011
Location: Queens, NY
Posts: 260
My Ride: 99' 323i ZSP/S52 E34
Sub'd

Awesome under taking.

Hope to see it completed with you driving hard soon.
NyC35AV is offline   Reply With Quote
Old 12-24-2014, 12:31 PM   #3
mikeetastic
Registered User
 
Join Date: Nov 2012
Location: Northern California
Posts: 1,209
My Ride: lots of 3
will you be using the donors DME/EWS and keys?
mikeetastic is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-24-2014, 12:45 PM   #4
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 259
My Ride: 323Ci M54B30 / MS43
Yes. I got those from the same guy who sold me the engine
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Last edited by shm21284; 12-24-2014 at 09:09 PM.
shm21284 is offline   Reply With Quote
Old 12-25-2014, 09:18 PM   #5
NumbaOneNewb
Registered User
 
Join Date: Jul 2012
Location: Portland, OR
Posts: 3,424
My Ride: 2003 330CI Silver
What will you do about the mismatch info on instrument cluster and other modules? How will you get the old asc system to be ignored by the car looking for the dsc system?
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Portland Metro: ECU updates, Euro tune, euro corner delete, air bag light, DSC light, cluster and any led color change, soldering work, transponders for keys, and all custom work related to computer or electronics.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
NumbaOneNewb is offline   Reply With Quote
Old 12-25-2014, 09:32 PM   #6
NumbaOneNewb
Registered User
 
Join Date: Jul 2012
Location: Portland, OR
Posts: 3,424
My Ride: 2003 330CI Silver
Wait, I guess since you have the coupe it may have dsc. Another question. Were your original keys the ones with the diamond shape design or the older design?
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Portland Metro: ECU updates, Euro tune, euro corner delete, air bag light, DSC light, cluster and any led color change, soldering work, transponders for keys, and all custom work related to computer or electronics.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
NumbaOneNewb is offline   Reply With Quote
Old 12-25-2014, 09:40 PM   #7
NumbaOneNewb
Registered User
 
Join Date: Jul 2012
Location: Portland, OR
Posts: 3,424
My Ride: 2003 330CI Silver
I also believe (i could be wrong) that the way the fuel delivery design was slightly different. The new system incorporated the pressure regulator into the fuel filter.... Wait. I guess you can just get another fuel filter and run a hose to where that regulator is to where it needs to go.
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Portland Metro: ECU updates, Euro tune, euro corner delete, air bag light, DSC light, cluster and any led color change, soldering work, transponders for keys, and all custom work related to computer or electronics.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
NumbaOneNewb is offline   Reply With Quote
Old 12-26-2014, 02:00 AM   #8
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 259
My Ride: 323Ci M54B30 / MS43
Here's what I've found through researching different part numbers on realoem to distinguish the differences between M52tu cars and M54 cars.

1) Drive by wire. M52tu cars are partially drive by wire, with a throttle linkage that opens the throttle and a stepper motor that can shut it. Solution: Remove old throttle peddle and cable, by new drive by wire throttle pedal. Run wires directly from the pedal to the DME.

2) Fuel system. The fuel system on an M54 car does not use a 3/2 way valve (this valve also incorporates a fuel pressure regulator), and had a fuel return from the fuel rail in addition to a return on the 3/2 way valve. Solution: remove 3/2 way valve and old fuel filter, install fuel filter from an M54 car (which has an integrated fuel pressure regulator). Also, I needed the returnless fuel rail and a new vacuum line to the fuel pressure regulator from an M54.

3) Evaporative emissions. The fuel vapor pump part number is different, and there's a note in the Bentley manual about something that's different about the fuel vapor pump on an MS43.0 DME. I haven't researched anything on this subject yet.

4) Intake (pre throttle body). Unfortunately, I had to buy a new K&N cold air intake because both the throttle body and mass airflow sensor are larger. Should be a good thing though, if the throttle body is the choke point in the flow on the M52tuB25 engine, then that I has been eliminated with the swap. I haven't personally run any flow tests on a flow bench or in CFD to verify that the throttle body is an issue, but BMW did make the throttle body larger on M54 engines, so I suspect there's good reason for it.
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Last edited by shm21284; 12-26-2014 at 02:01 AM.
shm21284 is offline   Reply With Quote
Old 12-26-2014, 02:33 AM   #9
BaliDawg
DEADBEEF BAADF00D
 
BaliDawg's Avatar
 
Join Date: Aug 2012
Location: Riverside, CA
Posts: 9,974
My Ride: E39 E46 E84
OP, why did you choose M54 instead of a more compatible M52TU28 motor? It seems like a lot of extra work for little gain.
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Last edited by BaliDawg; 12-26-2014 at 02:37 AM.
BaliDawg is online now   Reply With Quote
Old 12-26-2014, 07:34 AM   #10
NumbaOneNewb
Registered User
 
Join Date: Jul 2012
Location: Portland, OR
Posts: 3,424
My Ride: 2003 330CI Silver
Who wants to do it the easy way anyways? Lol. By doing it the difficult way, he then was granted our blessings to create his own thread. Anyways, I'm guessing you have the asc dsc issue figured out right? And again other than having red tamper dot in your cluster, you won't be losing too many options I don't think
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Portland Metro: ECU updates, Euro tune, euro corner delete, air bag light, DSC light, cluster and any led color change, soldering work, transponders for keys, and all custom work related to computer or electronics.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
NumbaOneNewb is offline   Reply With Quote
Old 12-26-2014, 09:06 AM   #11
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 259
My Ride: 323Ci M54B30 / MS43
I got a B30 for several reasons. Larger displacement, albeit not much over the 2.8. Larger throttle body. Tunable throttle response in the ecu (MS 43.0 that parameter can be changed, AA says that parameter is not changeable in MS 42.0). Also, I could not easily find a 2.8.

My car has DSC.

I hope my cruise control works, I don't know if it will.
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
shm21284 is offline   Reply With Quote
Old 12-26-2014, 09:25 AM   #12
daniel_f.
Registered User
 
Join Date: Jul 2011
Location: Germany
Posts: 3,105
My Ride: 330iC
Quote:
Originally Posted by shm21284 View Post
I got a B30 for several reasons. Larger displacement, albeit not much over the 2.8. Larger throttle body. Tunable throttle response in the ecu (MS 43.0 that parameter can be changed, AA says that parameter is not changeable in MS 42.0). Also, I could not easily find a 2.8.

My car has DSC.

I hope my cruise control works, I don't know if it will.
Hm...

__________________

No further development on MS4x from me.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Last edited by daniel_f.; 12-26-2014 at 09:26 AM.
daniel_f. is offline   Reply With Quote
Old 12-26-2014, 09:32 AM   #13
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 259
My Ride: 323Ci M54B30 / MS43
Interesting. Well, strike that from the list of bonus points for MS43.
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
shm21284 is offline   Reply With Quote
Old 12-26-2014, 09:43 AM   #14
mikeetastic
Registered User
 
Join Date: Nov 2012
Location: Northern California
Posts: 1,209
My Ride: lots of 3
does the 330ci /330i M54 early version (2000-2001)? also drive by wire?
mikeetastic is offline   Reply With Quote
Old 01-03-2015, 06:12 PM   #15
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 259
My Ride: 323Ci M54B30 / MS43
Well, I've finished the install and the starter cranks, but no firing. I pulled a coil and hooked a spare spark plug to it, I have spark. There is fuel pressure. In INPA, the monitors claim that the injector are firing, but hooking a bolt meter to the injector plugs show no voltage across the two injector pins (AC and DC). I have 4V on one side if the injector plug at all times, when grounded.

I have a feeling the EWS and DME are out of sync, but I don't know why they would be. They came from the same car (asking with ignition tumbler and key).

I'm stumped.

Sent from my SM-N900V using BimmerApp mobile app
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
shm21284 is offline   Reply With Quote
Old 01-04-2015, 01:59 AM   #16
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 259
My Ride: 323Ci M54B30 / MS43
The engine runs! It was the fuel injector power wire. I'll post more details later.

Sent from my SM-N900V using BimmerApp mobile app
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
shm21284 is offline   Reply With Quote
Old 01-04-2015, 10:11 PM   #17
bmw_chuzo
Registered User
 
Join Date: Feb 2005
Location: Republic of Panama
Posts: 555
My Ride: HPF M3
Send a message via MSN to bmw_chuzo
nice read man! I'm happy the motor ran

btw those headers look monstrous
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
bmw_chuzo is offline   Reply With Quote
Old 01-04-2015, 10:45 PM   #18
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 259
My Ride: 323Ci M54B30 / MS43
Quote:
Originally Posted by bmw_chuzo View Post
nice read man! I'm happy the motor ran

btw those headers look monstrous
Thanks! Your should check out my header build thread in the driveline, engine, and dme tuning section.

I have a couple bugs to work out. Looks like I got the O2 sensors backwards. A 50/50 shot and I seem to always reverse them.

Also, the exhaust cam position sensor on this new engine is intermittently malfunctioning. Not too bad to fix.

The car feels faster already. Considering I made 193 RWHP on the M52tuB25, I can't wait to get a tune and post the dyno results.

Also, I am already thinking cams ;-)
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
shm21284 is offline   Reply With Quote
Old 01-07-2015, 08:30 PM   #19
Iceman00
Banned User
 
Join Date: Jul 2008
Location: FLA
Posts: 2,894
My Ride: E90 6MT
I wish this was a B28, but I'm excited with what you can do with it!
Iceman00 is offline   Reply With Quote
Old 01-08-2015, 09:03 AM   #20
shm21284
Registered User
 
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 259
My Ride: 323Ci M54B30 / MS43
Quote:
Originally Posted by Iceman00 View Post
I wish this was a B28, but I'm excited with what you can do with it!
I most likely would've grabbed a 2.8 if I could've found one local. I looked for 2 years and only found 1, which had a blown head gasket.

Either way, it is nice to have the MS43.0. I'm a fan of the larger throttle body, my theory is that the M52tu throttle body choked on my M52tuB25 at 6,000 RPM since mass flow stopped rising with engine speed. We will see if that's the case here.

I need to schedule a dyno date!
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
shm21284 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 On
Censor is OFF



All times are GMT -5. The time now is 06:27 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
(c) 1999 - VerticalScope Inc. All rights reserved.