Engine noise diagnose assistance - Possible vario cam actuator/pad/chain issue?

[bg305]

Originally Posted by blue62

The 25 degrees is how much the cams advance when the Variocam actuator kicks in.
If your starting out with 9 degrees of negative Cam deviation due to the pads being compromised or worn. Then when your Varocam system kicks in your really only getting 16 degrees of advance on the Cams because you are starting out 9 degrees retarded.
I hope that makes sense.

The actuators seem like they are working fine. The issue is you are starting with the 9 degrees of late cam timing=deviation.

Yes it does, and just to be sure.. my actual cam angle readings ~24-25 degrees do not take the deviation numbers into account. (if they did my bank 2 should be reading around 16 degrees like you said). I just want to check that the readings the DME are giving would be expected or if bank 2 should show 16 degrees. I still have doubts about my data given the tune on my car, and lack of error code given the -9.27 deviation.

[Stl-986]

Well, having the pads replaced wont hurt anything (provided done correctly).

[bg305]

I am pretty sure the activation is happening around 2500 (honestly looks more like 2800), and it seems to stop at 6k rpm. Perhaps there are differences between the 2.5/2.7 and the 3.2 as the red line if different, etc... I did try searching a bit on google I found some threads like this one: Camshaft deviation guru's....? which seem to have the same crossover for an non plus variocam 3.2.

I am also really curious why i do not have a CEL related to the 9.27 on bank 2

Now the big question, find an indy or do it myself . If i do it the engine is coming out. Anyone know if scissor style lifts offer enough clearance to get the engine out of the middle? And I mean the clearance between the lift and motor, not the height. I think I need more than 26 in high. My worry is that the scissor lift itself will be in the way of getting the engine out.