[yelcab1]

Originally Posted by RarlyL8

Timing is presumed fine, engine ran great minus the ticking sound. Modern engines shouldn't need anything "updated" or "upgraded" to last 150,000 miles. Porsche put a piece of crap engine in a great chassis. No excuse for it other than greed. All of my old air cooled 911's have/had way over 100,000 miles and never a blip. I can't see myself needing to learn this lesson twice …

Well, your ownership of a 996 is fairly new and you have not seen all the issues yet. The timing chain ramps is well known for wearing out. I replaced two that look like the picture at 78K miles. You cannot make the statement that timing is presumed fine unless you hook up a Durametric and find out what the timing values are while the engine is running. Guessing, and opining about cam timing is … really not valid.