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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

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  #1  
Old 09-08-2011, 01:02 AM
Corbzin Corbzin is offline
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M3 swap in e46

Hey guy new to the forum, new to having a Beamer, just recently purchased a 2000 325i,
It has a stock motor in it with 165,000 miles on it.

Im looming to get some more power, so I'm wondering how possible a m3 swap would be for this car. If anyone could give me information on doing this swap or point me in the direction to wherevi could get more info and what I would need to purchase other then the swap,
Would also like to keep my 5 speed manual tranny that's in the car.


Any help is greatly appreciated. Thanks!
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  #2  
Old 09-08-2011, 01:22 AM
mujjuman mujjuman is offline
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Not worth the hassle. Just buy an M3
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  #3  
Old 09-08-2011, 01:23 AM
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LaCrosse540i6 LaCrosse540i6 is offline
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How's the condition of your current motor?

IMO supercharging your setup now would be MUCH easier and probably cheaper.

Either way you go, keep us posted!
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  #4  
Old 09-08-2011, 01:27 AM
Corbzin Corbzin is offline
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Quote:
Originally Posted by LaCrosse540i6 View Post
How's the condition of your current motor?

IMO supercharging your setup now would be MUCH easier and probably cheaper.

Either way you go, keep us posted!
Well problem is car is my daily. Supercharging a motor with 165,000 miles dosnt sound safe.
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  #5  
Old 09-08-2011, 05:27 AM
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I know there's a shop up here in NY that will do it soup to nuts for about $6k, that includes electronics/motor/rear subframe/6-spd transmission. You will be unable to keep you ECU or 5spd as the don't match up to the M3 engine.
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  #6  
Old 09-08-2011, 07:43 AM
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Another post about the S54 swap. Its a pain, rewiring the entine engine setup, new brain, new tranny as stated above, etc etc.

Just swap in a 3.0l thats in good condition, most youll have to do is a tune and depending on the engine year a throttle body adapter from cable to wire.

And believe it or not, just run roughly 8psi of a SC and you should be alright.
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  #7  
Old 09-08-2011, 07:45 AM
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Corbzin: This question gets posted every 4 weeks and very few people actually go through with it.

Please feel free to use the search function to find all the threads about it. You'll see why a lot of people abandon the idea.

If you really have a 2000 325i I would leave it as-is because that would be a super rare car - probably the only one in existence since BMW only made a 323 and a 328 for the 2000 model year.
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  #8  
Old 09-08-2011, 11:27 AM
Corbzin Corbzin is offline
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Maybe I'm mixed up with the exact model, if the swap is worth doing then I'll do it I'm use to building hondas that's all ive had before this.

But if y'all say that supercharging a motor with 165,000 miles is safe I'll go with that.

Also another question, how well will itb's up the performance on my car. That I'm guessing is a 325i
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  #9  
Old 09-08-2011, 11:45 AM
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It's actually not to bad. I've priced the whole process to be about 8k in total including labor doing this swap. I plan on doing it to my car after I purchase the E60 M5 some time next year. Keep my E46 for project car.
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  #10  
Old 09-08-2011, 12:03 PM
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Quote:
Originally Posted by Corbzin View Post
Hey guy new to the forum, new to having a Beamer, just recently purchased a 2000 325i,
It has a stock motor in it with 165,000 miles on it.

Im looming to get some more power, so I'm wondering how possible a m3 swap would be for this car. If anyone could give me information on doing this swap or point me in the direction to wherevi could get more info and what I would need to purchase other then the swap,
Would also like to keep my 5 speed manual tranny that's in the car.


Any help is greatly appreciated. Thanks!
Your car falls within the MYs which were most likely to develop subframe failures. Was your car ever inspected or repaired under the terms of the lawsuit settlement ? There *should* be documentation if it was....You want to make this determination *before* spending any money, it could be like building a house on a bad foundation.
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  #11  
Old 09-08-2011, 12:10 PM
Corbzin Corbzin is offline
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Quote:
Originally Posted by Fast Bob View Post
Your car falls within the MYs which were most likely to develop subframe failures. Was your car ever inspected or repaired under the terms of the lawsuit settlement ? There *should* be documentation if it was....You want to make this determination *before* spending any money, it could be like building a house on a bad foundation.

So it's something I just take it to BMW and have them look
at?
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  #12  
Old 09-08-2011, 12:42 PM
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tim330i tim330i is offline
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If it hasn't been done the inspection window has been closed as far as I know. If it was done the dealer should be able to see it in the service history. If it was inspected and/or fixed as Fast Bob pointed out you're building on a questionable foundation.

Tim
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  #13  
Old 09-08-2011, 01:27 PM
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Quote:
Originally Posted by MalibuMafiaV View Post
It's actually not to bad. I've priced the whole process to be about 8k in total including labor doing this swap. I plan on doing it to my car after I purchase the E60 M5 some time next year. Keep my E46 for project car.
Hehe the m5 known for " press the m to shut your annoying passenger up and slam them in their seat series"

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  #14  
Old 09-08-2011, 02:03 PM
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Quote:
Originally Posted by Corbzin View Post
So it's something I just take it to BMW and have them look
at?
If it actually WAS done, BMWNA will have a record of it....you should inquire before proceeding with any mods, or investing any money in repairs.
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  #15  
Old 09-08-2011, 03:10 PM
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Quote:
Originally Posted by Tfk View Post
Hehe the m5 known for " press the m to shut your annoying passenger up and slam them in their seat series"

Sent from my SPH-D700 using Bimmer
precisely
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  #16  
Old 09-08-2011, 05:25 PM
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Originally Posted by Fast Bob View Post
you should inquire before proceeding with any mods, or investing any money in repairs.
or buying the car, ooops
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  #17  
Old 09-14-2011, 02:25 AM
Corbzin Corbzin is offline
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So BMW has no record of it ever being fixed :/ where do I go from here?
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  #18  
Old 09-14-2011, 04:15 AM
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Do they have a record of it being inspected? If not, then your first step is getting a rear subframe inspection from a local indy or the dealer.

If it has been inspected but no faults were found, your first step is to get a rear subframe reinforcement kit installed before upping the power.
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  #19  
Old 09-14-2011, 07:30 AM
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Quote:
Originally Posted by Corbzin View Post
Well problem is car is my daily. Supercharging a motor with 165,000 miles dosnt sound safe.
Lot of work even if you have it done by an indy. Plan on weeks of effort if you DIY.

Not worth it IMO.

If you want an M3, buy an M3.
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  #20  
Old 09-14-2011, 08:45 AM
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Quote:
Originally Posted by Scott ZHP View Post
Lot of work even if you have it done by an indy. Plan on weeks of effort if you DIY.

Not worth it IMO.

If you want an M3, buy an M3.
Honestly let me tell you guys.

I've looked into doing the M3 swap into a E46 sedan a lot because I plan on doing it eventually. And as I said it's about 8k for the whole thing including labor. So what? you go buy a E46 sedan 323, 325, 328, 330 doesn't matter for what? 6 or 7k?. That's only 15k which is just about how much an E46 M3 is with about 80k miles. Might as well build something unique rather then have an M3 like every one else and there grandma.

This project use to cost near 15k. But an engine and tranny you can pickup for about 4k. That 4k leftover for labor and building the engine reinforcement. Well over enough money for the job.
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Audi S4 2000 Stage 3 - Dat turbo spool
BMW 2000 3-series - Supercharged Because race car SOLD
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BMW 2006 M3 - stock - SOLD
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  #21  
Old 09-14-2011, 05:18 PM
PancakeBimmer PancakeBimmer is offline
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Been reading about swap too.
Love the m3 power but don't like coupe :\ doors look way too long :|

Someone was offering me m3 engine and smg tranny for 5k
My dad is into working on cars, hence why we got my bmw.

If m54 in my bmw dies it will be swapped with s54.
+ Project for my dad, he would love it
+ Unique sedan with s54
- Need new suspension, frame reinforcement, and other preps.
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  #22  
Old 09-16-2011, 10:12 AM
mujjuman mujjuman is offline
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Stick with manual for simplicity
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  #23  
Old 09-16-2011, 11:24 AM
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call Turner Motorsport and have them wedge an S62 into it.
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