Interference engine to Non-interference engine-Just a thought.
This is just a theoretical preposition based on my experience with Isuzu Rodeo 3.2 K V6-SOHC. This engine is Non-interference engine. Few months back timing belt(not chain) broke. Nothing bad happen to piston or Valve.
My observation- Ignition champer is larger than the travel of pistons or valve?

My theoretical prepostion is -----

1- Meassure the elevation of the lobe of the cam shaft- travel distance of Valve into the Ignition chamber.
2- Increase the ignition chamber hight to same lenght as travel distance of valve- by putting head gasket spacer or may be putting 2,3,4 head gaskets.
3- Theoretically- If ignition chamber hight is increased by valve travel distance. Piston will not collide with valve.
4-Possible broblems- loss of some compression ratio, loss of some power
5-Abvantage- NO BENT VALVES, NO DAMAGE PISTON IF TIMING CHAIN BREAKS.

What are your thoughts on this hypothesis.--------?

If anybody has done this? It will be great inovation if any of you want to do this vanture?