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BMW 3-Series (E90 E92) Forum
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B-series engine block concerns
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| 09-23-2023, 09:25 PM | #1 |
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Lieutenant General
 
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Rep 10,352
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B-series engine block concerns
Tuning the B4x may be a bad idea. Apparently the blocks can develop a crack. The first half of the video speaks about it.
https://youtu.be/6bGFdJ-TwXs?feature=shared
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