Cam deviation at 6 after VC pads done

[ike84]

My understanding of the measurements is that they should be taken at idle with the car hot, but should not fluctuate widely with rpm variations unless there's an actuator issue (then you'll see huge variations)

I think there are a few sentiments about these numbers - first is that the trend is more important than the actual number (stable over time vs progressively worsening) and that unless a cel is on then not to worry. Second is that anything greater than 2 deg is enough to start causing mechanical issues (dme changes fuel trims) and should be addressed.

If you know that your pads and tensioners are good, then you're probably fine. You may have a bad sensor and it.might be worth swapping the sensors.from side to side to see if the readings change. If they do you have your answer.

If you swap sensors and still get 6 on bank 1, it may be mistimed. I don't know what the right answer there is though. I say that because one of the main reasons behind the "ignore it unless you get a cel" is because supposedly these cars will come off the line with significant timing deviations, although I've never seen a hard example to quote. 9 is the threshold for the cel, and 6 shouldn't put you in danger of piston/valve damage, so as long as your hardware is good and performance is good you can easily invoke the old "enemy of good" philosophy.

One thing I find fascinating - I know people make a big deal over these numbers, and rightly so considering the consequences of pad failure. With that being said, ROW cars (and that includes those in the fatherland) don't even register cam deviation on bank 2. So clearly porsche never wanted to put much emphasis on these numbers from the get go. Whether that was an oversight though (and you could very well argue that it is) is not clear.

Hope this helps.


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