[Matra et Alpine]

Originally Posted by revetec

So what happens when you are at 6,000rpm and have an earth problem. Hope they will all be free running engines in respect to the piston/valves and or use springs as well (but then that'll drop efficiency) but a infinite variable valve timing will be good.

An electrical failure driving a valve Coates valve woudl be MUCH safer and less expoensive to repair than a spring driven poppet.
So an exhaust and inlet don't open -- so what, the ECU would know of the valve failure and prevent ignition and injection
No issue of piston hitting valve under ALL failure modes.
You'd lose a cylinder .... but coudl still limp home.
Even if it was total failure of all or most, then it's no worse a failure mode than a cambelt -- again the SRV means it's MUCH "safer" as nothing can hit anything