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Old 10-08-2012, 03:31 PM   #3011
NoobIAm
Far, far from the Garden.
 
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Joined: Oct 2008
Location: Upstate SC, USA
Oddometer: 2,554
In reading through the .pdf that BMW released, I noticed what may amount to a significant change to engine longevity. The main crankshaft bearings have been reduced in diameter by 5 mm, and the connecting rods have had their width shaved at the crank. All of this adds up to higher stresses on the bearings, which leads to greater wear in a given timeframe. It'll be interesting to see how it all plays out against the current boxer engine.
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