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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY - How To Remove / Swap an N52 Engine (3 Series - E90)



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      08-21-2021, 09:54 AM   #1
BuildAndDrive
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DIY - How To Remove / Swap an N52 Engine (3 Series - E90)

I have a 2005 BMW 325i (N52B25) with a real bad oil burning problem. So I decided to rebuild the engine. The following video series is everything you need to remove the n52 engine and put it back in again. I hope this can help educate any of you looking to do the same engine removal / swap (even on a n54, n55 or e91, e92 car). I had to piece together a lot of information and have many people to thank (including in this forum) so I hope the video series can help many of you to keep your cars running strong!

Part 1: How To Remove / Swap An N52 Engine From A BMW E90 In Your Driveway

In this video you will learn how to prep your engine for removal.
1. Disconnect the battery
2. Remove undertray, fender liner and front bumper
3. Remove airbox and some wiring
4. Drain all fluids
5. Disconnect all Coolant and PS lines from radiator
6. Remove front crash bar and radiator


Last edited by BuildAndDrive; 09-03-2021 at 03:58 PM..
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      08-29-2021, 08:06 AM   #2
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N52 Engine Wiring Harness Explained On A BMW 3 Series E90 325i

N52 Engine Wiring Harness Explained On A BMW 3 Series E90 325i

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      09-03-2021, 03:48 PM   #3
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How To Pull A BMW Engine out of a 3 series E90

So finally, after a lot of difficulty and effort... the n52 engine is finally removed from the e90 to get ready to rebuild.

In this video, you will learn

1. How to disconnect the exhaust downpipe. Actually... you'll learn how to angle grind the rusted bolts off of the exhaust to take it off :P
2. How to remove the shift linkages on the ZF 6 speed transmission
3. Remove or disconnect AC, PS, Coolant & Fuel lines
4. Remove intake and CCV system
5. How to connect the engine crane to the engine
6. How to pull the engine out!

Hope this helps keep your cars on the road!


Last edited by BuildAndDrive; 09-03-2021 at 03:53 PM..
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      09-21-2021, 02:29 PM   #4
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Swap over all the accessories and parts that you need

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      10-01-2021, 11:25 AM   #5
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How To Replace The Clutch On A 3 Series E90 325i

In this video we remove the transmission and swap out the clutch and throw out bearing.

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      10-03-2021, 04:42 AM   #6
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N52 Re-assembly

Swap over all the parts that you need from your old engine (wiring harness, all accessories, fuel rail, vanos, coolant pipes, spark plugs, exhaust headers etc). Install new gaskets on everything and get it ready to put back in the car.

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      08-22-2023, 08:36 AM   #7
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Zdecydowanie do odbudowy n52 zalecam pierścienie olejowe konstrukcji jednoczęściowej. Ja zastosowałem takie i nie zauważyłem po dotarciu żadnych ubytków
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      09-24-2023, 07:48 AM   #8
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Fantastic video!

Did you ever figure out where the straight rubber molding (at 20:22 in the first video) belongs?

I've changed my radiator and ended up with this same piece as an extra part.

Very curios where it fits, especially since my radiator has now failed 3 times. Has me wondering of this piece performs some important damping or insulation function?

Thx!
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      04-07-2024, 05:30 PM   #9
BuildAndDrive
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Forgot to post the last view videos:

Dropping the engine into the car:


Final Re-Assembly of the motor:
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bmw, bmw 3 series, bmw 3 series diy, bmw n52, bmw n52 engine removal, bmw n52 engine swap

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