Changing M54 to S54...

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Changing M54 to S54...

Post by robbansson » Thu Apr 09, 2015 10:00 pm

Hi!
I just stumbled over an S54 3.2L Engine ... to a very good price..
just to make a long story short.. it's in my garage now :)
it's naked.. just engine, no sensors, generator etc.. a winter project..
so now to my question, is it anyone here on the forum that has done this swap?
and I searched on realoem for engine wiring harness and noticed that it differs from the M3 and the Z4M... anyone know what the difference is?
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Re: Changing M54 to S54...

Post by srhutch » Thu Apr 09, 2015 10:45 pm

The DME is different which will be one reason for different loom. Different connector on it.
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Re: Changing M54 to S54...

Post by Ewazix » Fri Apr 10, 2015 7:06 am

It could be a big project as there are a LOT of differences with the ancillaries and parts you will need to get it installed. I'd start by checking RealOEM which gives part breakdown diagrams and part numbers for some idea. Good luck with the project :thumbsup:
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Re: Changing M54 to S54...

Post by AndyBeech » Fri Apr 10, 2015 8:36 am

That'll be some project! Good luck and keep us updated, will be interesting. As mentioned different DME will mean different wiring to an M3 although similar in many respects regarding sensors etc. I imagine sorting the wiring loom out will be the hardest part tbh.

While you've got the engine out I would do some decent preventive maintenance like a VANOS refurb, checking out bearing shells etc. the stuff that's a pain when the engine is in situ basically! Good luck :thumbsup:
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Re: Changing M54 to S54...

Post by robbansson » Fri Apr 10, 2015 3:26 pm

Yes, it's a big project..
it's going to be a total refurbishment, going down to bits and pieces...
but i'm in no hurry :)
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Re: Changing M54 to S54...

Post by BMWZ4MC » Sun Apr 12, 2015 10:23 am

That's one hell of a winter project. Fortunately your country has long winters.
Have you thought about fitting it to something smaller and lighter rather than turning your 3.0 into a 3.2? It would make for a phenomenal kit car!
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Re: Changing M54 to S54...

Post by Mister T » Sun Apr 12, 2015 1:44 pm

BMWZ4MC wrote:That's one hell of a winter project. Fortunately your country has long winters.
Have you thought about fitting it to something smaller and lighter rather than turning your 3.0 into a 3.2? It would make for a phenomenal kit car!
That would be the GKD Legend then :)

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Changing M54 to S54...

Post by RickyG512 » Tue Sep 20, 2016 10:54 pm

robbansson wrote:Hi!
I just stumbled over an S54 3.2L Engine ... to a very good price..
just to make a long story short.. it's in my garage now :)
it's naked.. just engine, no sensors, generator etc.. a winter project..
so now to my question, is it anyone here on the forum that has done this swap?
and I searched on realoem for engine wiring harness and noticed that it differs from the M3 and the Z4M... anyone know what the difference is?

How u getting on with this project? If you've abandoned it lemme know and I'll buy the engine ;)
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Changing M54 to S54...

Post by robbansson » Tue Sep 20, 2016 11:31 pm

a small update,
1st winter just passed... but 2nd is coming soon :D
The bottom is flat-grinded and drilled to 1st over dim, crankshaft controlled and polished, connecting rods checked, new Wiseco pistons and bearings is on the shelf, waiting :)
now missing an oil cooler and engine wiring.
need another differential as well, preferably with ratio 3.85 and LSD
Right now I'm working on a little plastic project will be an M front bumper in fiberglass / carbon fiber
I have also put in brackets for the four-point belts. :D
more updates to come :driving:
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Changing M54 to S54...

Post by srhutch » Wed Sep 21, 2016 6:53 am

Any pictures?
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Changing M54 to S54...

Post by robbansson » Fri Sep 23, 2016 9:03 pm

pics will come
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Changing M54 to S54...

Post by buzyg » Fri Sep 23, 2016 9:41 pm

robbansson wrote:pics will come
Look forward to hearing more on this one. :thumbsup:
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Changing M54 to S54...

Post by robbansson » Sun Jan 29, 2017 1:16 am

some pics
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2003 3.0 Roadster, M- exhaust, Powerflex, Eibach B12 Pro-Kit, Brembo 4p 348mm floating front / 336mm rear, Recaro seats

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Changing M54 to S54...

Post by robbansson » Sun Jan 29, 2017 1:18 am

some more...
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Changing M54 to S54...

Post by Smartbear » Sun Jan 29, 2017 1:27 am

Lovely shiny pieces :)
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