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viniebenet3 viniebenet3 is offline
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Default early n54 vs late n54 engine swap - 08-02-2020, 06:22 PM

Hello

so I am doing an engine swap on my 2008 535xi N54


the donor engine is from 2009 535xi. I know there might be a difference between the 6 bolt and 8 bolt.

if the engine has the 6 bolt pattern, can this be fixed by replacing the fly wheel to be 8 bolt pattern?

so basically my question is can using a newer n54 on an older n54 be done if replacing fly wheel (to go from 6 to 8 bolts)? or is there any other differences preventing the swap?

thanks for all your help greatly appreciated192.168.0.1 routerlogin 192.168.l.l

Last edited by viniebenet3; 08-02-2020 at 09:55 PM..
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THE BEAST THE BEAST is offline
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Default 08-02-2020, 11:53 PM

Quote:
Originally Posted by viniebenet3
Hello

so I am doing an engine swap on my 2008 535xi N54


the donor engine is from 2009 535xi. I know there might be a difference between the 6 bolt and 8 bolt.

if the engine has the 6 bolt pattern, can this be fixed by replacing the fly wheel to be 8 bolt pattern?

so basically my question is can using a newer n54 on an older n54 be done if replacing fly wheel (to go from 6 to 8 bolts)? or is there any other differences preventing the swap?

thanks for all your help greatly appreciated192.168.0.1 routerlogin 192.168.l.l
Why would you try and change it ?
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BeatupVR4 BeatupVR4 is offline
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Default 08-03-2020, 04:49 AM

Quote:
Originally Posted by THE BEAST
Why would you try and change it ?
Availability maybe?

I'm no expert but would think if you just swapped out the flywheel/flexplate for the one with the appropriate amount of bolts your crank has you should be fine.
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Ls3 Ls3 is offline
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Default 08-03-2020, 06:28 AM

Yep, just swap the flywheel/flexplate.
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JuniorB JuniorB is offline
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Default 08-09-2020, 07:57 AM

Just keep the flywheels, ther is absolutely no different,
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Ls3 Ls3 is offline
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Default 08-09-2020, 08:32 AM

The number of flywheel bolts changed between 2008 and 2009.
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Default 08-09-2020, 09:40 AM

Quote:
Originally Posted by JuniorB
Just keep the flywheels, ther is absolutely no different,
This was my point....
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Ls3 Ls3 is offline
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Default 08-09-2020, 10:34 AM

Guess I misunderstood, think we need more info on the donor engine, maybe it has a flywheel rather than a flex plate or vice-versa.
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shehab_e60 shehab_e60 is offline
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Default 08-10-2020, 08:04 PM

I am in the middle of the exact thing you are doing, I have a 2008 with bad engine and a donor from a 2009. Both are 535xi but the donor is 6 bolt vs the my car is 8 bolt. I researched and it Seems like it works as others have said, I might reach out to you for questions during my swap as this is my first swap but I am familiar with the bmw n52 and N54 engines.
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