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> One last question: why aren't all engine "noninterference?" It seems to me that there whould be a really good reason for a car to be designed in a way that will lead to self-destruction if a belt breaks...
Interference engine design comes partly from the multi-valve per-cylinder setup to get better volumetric efficiency (compared to 2-valve per cylinder engines), which requires the valves to be angled into the combusion space and partly design parameters which increase fuel efficiency, reduce emissions and produce more power (eg. higher valve lift).
The advantages outweigh the risks of a belt breaking. It's statistically a pretty rare occurence and usually only in cases like yourself (physical damage) or insufficient maintenance/replacement intervals.
Bye, Arno.
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