considering ypur past record on here and lack of knowledge of the regulations.
Rod the con,
I always love that above angle of yours, as you consistently demonstrate you don't REALLY understand the structure of the Australian aviation legislative framework, and in particular the difference between regulatory, standards and orders, and advisory material.
Much less pick up the conflict and contradictions in so much of that voluminous nonsense peculiar to Australia. Haven't you yet figured out that nobody in their right mind would take your assertions seriously.
For anybody who wants to learn about engine design, particularly inlet and exhaust track design, and related valve/cam/piston relationships, there are quite a few excellent text books on the subject for the curious.
Such reading will be of little real practical benefit in efficiently operating any Otto cycle engine, as fitted to an aircraft.
Tootle pip!!
If you really do know something about high performance engine building, which seems highly doubtful, based on TDC "determination",I sincerely suggest you amend your methods of determining TDC.