View Full Version : VANOS "growl"...is there a timing chain adjustment?

11-01-2008, 07:23 PM
Like many, my '94 525iT has the VANOS "growl." Is there an adjuster for the timing chain that is accessible without dismantling things? I see a plug on the lower passenger side of the timing chain cover and wonder whether this allows any adjustment.

The plug looks like part 14 on this schematic...


11-02-2008, 03:16 PM
No adjustment that I am aware of. However the assembly and spring is farily cheap and may affect tension on the timing chain. I replaced mine a ocuple of years ago. Bought parts from BMA. Seemed to be slightly less noisy.

11-02-2008, 07:12 PM
How involved was the repair work?

attack eagle
11-02-2008, 10:51 PM
check into Dr. Vanos kits, maybe?

This is why i love my 92... no vanos = no vanos issues! the loss of 10-15lbs of midrange torque are so worth it to me.

bimmer dot info
11-03-2008, 07:44 AM
Dont forget the better parts in the non vanos engine (Mmmm forged)

11-03-2008, 03:27 PM
How involved was the repair work?
If you are refering to my post. It took about 15 minutes to remove the tensioner/spring combo and install new parts.