Oil preasure?

[Phil Payne]

> one of my 200 have exactly same oil pressure as you describe.   Another
> 200 I own has  higher oil pressure.  I just rebuild the head on first
> one, piston rings had no looseness at all.   I wish I knew why there is
> a  difference.

Try pulling out, degreasing and reassembling the oil pressure relief valve.  The filter also
has a certain effect on the measured pressure.

--
  Phil Payne
  http://www.isham-research.com/quattro
  +44 7785 302 803
  +49 173 6242039