Changing M54 to S54...

robbansson · 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?

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.

Ewazix · 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

AndyBeech · 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

robbansson · 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

BMWZ4MC · 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!

Mister T · 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

http://www.gkdsportscars.com

RickyG512 · 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

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

a small update,
1st winter just passed... but 2nd is coming soon

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.

more updates to come

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

Any pictures?

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

pics will come

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

robbansson wrote:pics will come

Look forward to hearing more on this one.

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

some pics

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

some more...

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

Lovely shiny pieces

Rob

Z4-forum.com

Z4-forum.com