By providing a complete information it's possible to conclude that your 09 (gen2) doesn't suffer from tolerance issues with regards to piston rings/cylinders. So, contrary to what you say the information you have provided should tell you not to be unnecessarily worried with that. Why?
Originally Posted by Cayman_09
Because if you follow the link given in BostonDuce's post (thank you very much BD!) you can read:
«As a result the most recent and most common problem afflicts the pistons and corresponding cylinder scoring. Common signs are increased smoking and oil consumption, sometimes – reduced performance (although not always) and a ticking noise resulting from the piston tilting and the top tapping against the cylinder head as it passes over top dead centre. »
«Consequently the driver rarely even feels the experience – just notices later - increased oil consumption, perhaps a tapping noise and reduced performance. The piston damage increases the clearance between that piston and the bore – so it rarely repeats the problem and anyway will be achieving lower compression and therefore never creating as much heat or power so never running as hot again. It may indeed therefore be the case that when we find all three cylinders with scored bores (and damaged pistons) that the problems each occurred on different occasions.»
You see... excessive clearance (due to tolerance issues) between piston/rings and the bore is also the end result of piston damage and scored bores, both of which would inevitably lead to increased oil consumption (the main common symptom). If you don't have excessive oil consumption you can rest assured that your engine doesn't suffer from piston/bore clearance issues. Which then lead us to the question:
ccw1982, do you have excessive oil consumption?
What I believe is really bad is people creating threads in the forums with messages regarding problems they have with their engines and then not giving any feedback about what they did or what was done by the dealers and what was the final outcome. That for sure creates more uncertainty than anything else, everyone then goes on to self diagnose their issues and create unnecessary worry. Please, think about that.
As for me, I can tell you that I had my engine head removed (bank 1) and that the car still is at the dealer undergoing some more tests - they say . When I have a final answer from Porsche I will tell you the whole story with engine pictures and vid. Not privately of course!