PSA: Reminder to check your vanos hub bolts!

[Tbonem3]

From memory, the 2005s and 06s were the ones most commonly having the issue (intake side).


This just looks like user error.

[sapote]

The hub bolts don't need to be replaced. The torque is not super tight, but without the BMW special tool or a crows foot wrench (used at a 90 degree angle), you cannot torque certain hub bolts with the VANOS mounted to the cylinder head. I believe the Beisan instructions say to tighten by hand until the bolt is completely flush on the backside of the hub. I don't really trust that over a torque wrench.

If one followed the Beisan's instruction, then one might ended up with bolts under or over torqued, as it just says guessing the torque with your arm.
To torque them properly, just remove the vanos module off the head and then use a standard torque wrench on the bolts.