Still haven’t found the source for that weird sound. Sounds like something is really vibrating and it stops every time the revs go under 2800rpm. Wonder what it is.
Heh. I forgot to post the clutch line diagrams. Here is the worst case scenario, how I imagined it would be if I everything was against me:
…and how it turned out:
The 6mm CuNi tube in the beginning of the line is the only good part from the 6mm tubing experiment.