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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 10-25-2016, 10:26 PM   #1
Nolans328ci
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Engine swap

I'd like to start off by saying that yes I do understand the easiest way to get m3 performance is buy an m3. However, I own a 2000 328ci, and enough cosmetic/mechanical work has been put into it that I am not willing to part with it once the motor dies. I have put too much in it to sell it for a loss. So what I would like to do is swap the motor once it dies instead of buying a new car. Of course, I want it to perform better, and I was curious as to what motor could be put in it and still be semi reliable while still being an upgrade from stock without costing more than an entire e46 m3. It will not be my daily when I reach this point so I would want the motor to be easily modifiable. For example an e36 m3 motor with a turbo vs an e46 m3 motor stock. This isn't an urgent or serious thread, I am just curious as to what would be the best idea to make this car fast once the motor dies in a few years down the road.
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Old 10-26-2016, 06:51 AM   #2
markusmarkus
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The problem with putting in a more powerful engine into that car is that the unibody may not handle the increased power. As you know the early E46s have issues with tearing sheet metal where the rear axle is bolted to the car. So, unless you do some serious re-enforcing of the sheet metal you'll have issues with tears. And when I write "serious re-enforcing" I'm not speaking of the kit from Turner Motorsports!
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Old 10-26-2016, 06:55 AM   #3
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A three liter engine will give you and extra 40 HP and all that would need to be added, would be a reflash of the OBC
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Old 10-26-2016, 08:19 AM   #4
Spannerhead
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What makes you think the engine is going to die in a few years?
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Old 11-16-2016, 04:37 PM   #5
Nolans328ci
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Originally Posted by Spannerhead View Post
What makes you think the engine is going to die in a few years?
It has 160k miles and growing. Already replaced a lot in the engine so it is only a matter of time before the engine itself goes.

p.s. a few years is more like four or five, probably 250k miles
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Old 11-16-2016, 04:38 PM   #6
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http://forum.e46fanatics.com/showthread.php?t=1116584

It'll only die if you let it, seems like.
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Old 11-16-2016, 05:35 PM   #7
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Quote:
Originally Posted by Nolans328ci View Post
It has 160k miles and growing. Already replaced a lot in the engine so it is only a matter of time before the engine itself goes.

p.s. a few years is more like four or five, probably 250k miles
I have 252k+ miles on my '01 300i sedan. I do 500 miles/week.

Last edited by CylonRed; 11-16-2016 at 05:36 PM.
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