as far as I've heard, ALL 3.3 Nissan Xterra Engines are an interference engine.

as far as the valves all closing at the same time? how is that possible for all of them to be closed at the same time when the cam lobes are designed to make sure some are closed and some are open as needed, I dont really think there is a position that the cam could be in that all valves would be closed at the same time. yes for some cylinders, but not for all of them.

valves may not make contact when turning slowly like that. the interference engine means that the valves CAN make contact, not saying for sure they will. when things let loose at speed, higher rpms it would be possible for the valves to make contact.


Edited by e207 (18/12/13 04:41 PM)
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