Interesting stuff Baz, I ever REALLY enjoyed the sensation of climbing up on to the cam while driving my SC`s not having a clue as to the part worn piston rings played in that..
I note that your pic contained a couple of broken cyl head studs, which from a poor memory of the situation perhaps 30+ years ago, seemed to affect low mileage air cooled Porsches over time, perhaps more so than those more regularly used..? Given even the youngest of air cooled Porsches are getting on quite a bit and perhaps most may have become garage queens in the intervening years, I wonder if they might be more used for an occasional blast and how much that might affect the studs today..?
I appreciate you are a busy man, whereas I am just passing time seeking to learn from the guys here.. :worship: