PROBLEM SOLVED in doing the follwing: This problem turned me crazy over weeks but now it is solved.
1. Inner and outer Potjoints replaced by new ones.
2. Subframe mounts controlled and the donuts (tear drops) thrown out and replaced by new, original
ones with highgrade steel distance shims .The terrible "clack" has gone.
3. Lower engine steady taken out, new rubbers and the little metal tubes and bought the exact
fitting Bolts for those tubes. Important to be sure that the exhaust is not touching the floor.
4. Upper engine steady: Got a new adjustable engine stabilizer with harder inserts, new
little metal tubes and perfect fitting bolts.
I found, that if the bolts do not perfectly fit these little metal tubes in the rubber inserts then you
hear a crazy metal shuttering especially when engine idles.
I would like to thank you all for your help and hints. have a nice summer.
Edited by Alpenflitzer, 20 May 2019 - 02:53 PM.