I have now found few videos. Correct me if I have understood something wrong.
- Camshaft gear is tapered (is it?) and the diamond washers helps to hold the gear in place/not to loose the nut. Which can be seen nicely from the second video
I know already that camshaft can be adjusted engine in place.
What I am planning to do is to follow the second video.
1. take camcover out
2. take tandem pump out
3.lock the crankshaft in place
4. lock camshaft in place
5. loose the nut that holds the camgear in place, seen to be in second video 1.30-->
6. based on my torsion value and how much I need to move the camshaft to what direction to get +2.0 torsion value for starters. I will flip the tool seen at 0,43 seconds 180 degrees and make a paper etc to mark where it was and where it needs to be to get correct torsion value. Move the cam directly by turning that tool.
7. follow fixing based on the video from 12.50->
Repeat the process to try various settings to find best value. What I cam promise that -3,3 torsio and 1.,1-1,2 l/h is not the best.
Why I I would like to do this adjustment?
On smaller vag tdi engines not properly/optimally adjusted torsion can have over 10% lower/worse fuel consumption. At the moment my touareg was able to reach 7.3 l/100km fuel consumption at 100 km/h speed. For most that would be already really good figure but. If I am able to lower the fuel consumption 10% just by moving to torsion value aka camshaft position to optimal value. Fuel consumption drops even 0.7 liters/100km with 1.5 €/l fuel price that means 1,05€/100km saving --> 1050€ every saved every 100000km driven.
But also engine makes more max power, more low end torque so you can drive lower rpm and you dont have to downshift so often in uphills.
I would appreciate if you could say if you have different idle fuel consumption values and with what torsion value you are seeing those values?