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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 10-07-2012, 11:18 AM   #1
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s85 into an e46 m3

well, an s85 powered e46 has been my dream car since I saw those gtrs take the prize in every race they ran. I know it's not an easy swap but I figure that there's a lot of knowledgeable guys out there as there has been a lot of these swaps done by now.
At the moment I'm looking for a reputable and honest shop to do the work that charges a reasonable amount for their job as I've seen shops charge it's clients like they are basketball stars or arab billionaires which obviously I am not.
a couple of questions:
1) do you know if I can keep my stock dash or do I have to go with something like cosworth? I'd like to keep it as stock looking as possible.
2) what I am looking to buy? m5 with man trans, radiator, manifold, headers, sump?
that said, any advice would be greatly appreciated so I can start working on getting the parts and talking to the shop to get estimates.
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Old 10-07-2012, 11:28 AM   #2
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I don't know of anyone on this forum that has done this swap. I think this swap would be an absolute TON of custom work. You are re-doing basically everything under the hood, the entire driveline and probably parts of the dash. For the price of doing it, you could probably just buy an E60 M5. If the uniqueness is worth it to you, then good luck!
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Old 10-07-2012, 11:38 AM   #3
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believe me, for me it is worth it. I really rather have this car than an e60 m5, furthermore I rather have this car than a gt3 and that's saying a lot. the difficult part would be to keep weight balance and not ruin me in the process. a standalone ecu looks like the safest bet but I don't want to lose my oem dash so any advice in this matter would be great.

Last edited by nemex12; 10-07-2012 at 12:29 PM.
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Old 10-07-2012, 11:49 AM   #4
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in before OP is giving handjobs in alleys for money to support his project.
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Old 10-07-2012, 11:56 AM   #5
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If I remember correctly, there's someone in the UK who did this swap
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Old 10-07-2012, 11:58 AM   #6
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Track culture has done this before ask them they can probably help you out better
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Old 10-07-2012, 12:22 PM   #7
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learning a lot from this http://www.trackculture.com/forum/in.../page__st__260
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Old 10-07-2012, 01:17 PM   #8
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Originally Posted by nemex12 View Post
came in here to link you to the same thread.

Good luck. Hope you do it.
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