Swap discussion

BrettJP

Private
May 30, 2017
41
9
0
Ride
08 335xi e92
As a future project, I'm interested in performing an engine swap. I know there are three different N54 models, the 225kW and 240kW N54B30 models and the 250kW N54B30TO model. Could the 250kW "TO" fit relatively well where a 225kW N54B30 is meant to go? Or are there some pretty big changes in dimensions?

This project wouldn't be done out of practicality, it would be done because why the hell not try and do it our own way.
 

Jsherry20

Sergeant
Dec 21, 2016
313
47
0
There couldn't be big dimensional changes as an N54 is an N54, its a 3.0L motor at the end of the day. I'd say there are differences in engine mounts and maybe a slight variance in some of the things you attach to the long block but that's about all I can say.
 

doublespaces

General of the Army
Oct 18, 2016
8,937
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AZ
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2009 E93 335i
I don't think there is a difference. Isn't the TO just the 335is engine?
 

BrettJP

Private
May 30, 2017
41
9
0
Ride
08 335xi e92
Not that it's the most reliable source, but according to wiki, the TO is found in 740i and Z4 models starting in 2011
 

BrettJP

Private
May 30, 2017
41
9
0
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08 335xi e92
I could try to track down a 335is manual later today though and see what it says.
 

doublespaces

General of the Army
Oct 18, 2016
8,937
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2009 E93 335i
It's possible there are some other differences but i don't think it would impact fitment for a swap.
 

08_335i

Sergeant
Nov 3, 2016
372
217
0
28
Ride
2008 ST 335i
The N54 is the N54. For swapping concerns, talking just the motor itself, I don't see any of them being any different in dimension from each other.
 
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Jsherry20

Sergeant
Dec 21, 2016
313
47
0
Now that I gave this more thought, the only difference I could see are the motor/trans mounts.
 

Kenjermen

Sergeant
Nov 6, 2016
259
78
35
N las vegas NV
Screw it just swap a s65, I wanted to do it on mine just it would take a long time and decided to go single turbo instead. I've only read about one e9x doing it.
 

Bimaxtremeretro

Specialist
Mar 21, 2018
76
77
0
Australia
Ride
11 ba$tards and counting
Yeah if I swapped, I'd put in an S85/N63/S63 or something.

I've actually had an s63 in my e91 for about a week until it spun a bearing with 50kms. Long and depressing story...

Tomorrow were staring a build for a customer with an early 06 e87 5 door hatch -> s65 6mt, brakes, suspension, rear end and possibly cic, comfort access, combox and individual audio.

Our intent is to have every feature and system working fault free in a 100% oem manner. It's especially difficult as being early 06 it's a jb1 and cas 2.
 
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veer90

Captain
Nov 16, 2016
1,000
762
25
West Nyack, NY
Ride
e90 335i 6MT
As a future project, I'm interested in performing an engine swap. I know there are three different N54 models, the 225kW and 240kW N54B30 models and the 250kW N54B30TO model. Could the 250kW "TO" fit relatively well where a 225kW N54B30 is meant to go? Or are there some pretty big changes in dimensions?

This project wouldn't be done out of practicality, it would be done because why the hell not try and do it our own way.

They are all the exact same motor in different states of tune. Depending on which chassis the motor came out of some accessories might be in different places but the long block is exactly the same.
 

doublespaces

General of the Army
Oct 18, 2016
8,937
4,143
0
AZ
Ride
2009 E93 335i
I've actually had an s63 in my e91 for about a week until it spun a bearing with 50kms. Long and depressing story...

Tomorrow were staring a build for a customer with an early 06 e87 5 door hatch -> s65 6mt, brakes, suspension, rear end and possibly cic, comfort access, combox and individual audio.

Our intent is to have every feature and system working fault free in a 100% oem manner. It's especially difficult as being early 06 it's a jb1 and cas 2.

Oh wow, you should post that up! That sounds awesome!
 

Bimaxtremeretro

Specialist
Mar 21, 2018
76
77
0
Australia
Ride
11 ba$tards and counting
Oh wow, you should post that up! That sounds awesome!

;)
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