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E46 Engine Swaps
Replacing your motor? From direct replacements to more exoctic engines, if it's going under the hood of an E46 3 Series this is the forum to discuss it.

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Old 10-16-2019, 11:49 PM   #1
bruce.antolovich
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M54B30 from a 2004 330CI into a 2002 330CI

Hi,
I want to swap in a motor to my 2002 330CI. It overheated and the head bolts stripped when I replaced the head. I can buy a good M54B30 from a wrecked 2004 bmw 330CI but I don't know if it will transplant easily. Is this just a drop in replacement or are there significant differences between the 2002 and 2004 M54B30 engines? I looked in other threads but found only questions about dissimilar swaps.
Thanks,
Bruce
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Old 10-17-2019, 02:38 PM   #2
mega_stihl
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iirc the engines themselves are completely identical. What MIGHT different is the DME (not sure on this)
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Old 10-17-2019, 02:47 PM   #3
bruce.antolovich
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M54B30 from a 2004 330CI into a 2002 330CI

MegaStihl, thanks for the quick response. Based on that, I will buy the engine and just use all the electrical/harnesses off of the old engine.
>iirc the engines themselves are completely identical. What MIGHT different is the DME (not sure on this)
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Old 11-07-2019, 11:14 AM   #4
Archbid
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Quote:
Originally Posted by bruce.antolovich View Post
MegaStihl, thanks for the quick response. Based on that, I will buy the engine and just use all the electrical/harnesses off of the old engine.
Yes and use the old MAF, intake air temp sensor and secondary air pump.
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