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Old 04-21-2008, 02:19 PM   #1
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z4 swap

So my cousin got a z4 2004 ishh ... and he got the 2.5 SMGII and i want to know if its possible to put a euro engine and keep the smg ?

and where i can find a smg euro engine i have been looking on a couple of site i ask many people ...ù but they all say they dont know if the smg of the z4 is compatible I know they make a z4 M but i dindt get if we have some here in canada

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Old 04-22-2008, 03:37 PM   #2
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Are you asking to swap for the 2.0 (N46B20 I4), 2.2 (M54B22 I6) engines or the 3.2 M engine (S54B32 I6)?

If you can find 2.0 or 2.2, you can probably swap it, but I'm guessing your looking for the M engine, which then you'll need a new 6 speed transmission as your 2.5 is 5 speed.
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Old 04-22-2008, 04:46 PM   #3
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well, afaik you can bolt up a s52/m52/m54 to a s54 tranny, and vice versa, i dont see how it should matter.
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Old 04-22-2008, 07:40 PM   #4
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Mechanically you're not going to have any problems. However the tranny you have is an auto tranny and thus the electronic integration with a different engine and a different ECU might present a problem. Especially since the S54 variants were not available with automatic transmissions. So the ECUs may not be able to talk to one another.


Last edited by JazzM; 04-22-2008 at 07:42 PM.
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