Quote:
Originally Posted by Westersund
Wasn't the VANOS hub bolts a Z4 M S54 only issue? They used different bolts. Or is my mind playing me a trick?
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Lots of cases with s54's derived from M3's documented on the www.
Bolts were changed indeed at some point (from m6x14 to m6x16) according to the ETK, but both pre and post 06 engines can develop these issues afaik.
I don't know how those bolts work themselves loose, but if I were to install new ones, I would very meticulously clean the screw holes and the new bolts with acetone and fit the new bolts with red loctite.