Apparently, there are the engine problems of the 1. 997 generation also with models built after 2008. I have my 997S, built in 2009, just delivered with rattling engine noise at the PZ. The noise occurs in idle mode and under load, in sliding mode less to no at all. Power is still quite present. Since I noticed the noise, I don’t like to try it anymore. The Porsche technician typed after the first listening on a piston tipper. Now the engine is endoscoped. If the suspicion is confirmed, 3 repair possibilities were offered to me: 1. Installation of a new part engine, i.e. two new crankcase halves, new pistons etc. 2. Installation of a completely new engine 3a. Use of cylinder run bushings by an engine repair operation 3b. One engine repairer thought that there might be pistons with an oversized size, which can be used after honing the cylinders. My question to the community: Has someone already made similar experiences with this engine and are 3a and 3b serious options?