two stage v-tec can be found on some european honda's, it works like ours with having 3 rocker arms and such but it works in 2 stages.as we know the two valves open and close at the right time and then v=tec kicks in which and they open bigger with help of the middle rocker arm.
well 2 stage v-tec works the same but when the first v=tec kicks in at lower rpm such as 5500 rpmthe middle and one other valve open bigger but one stys the same and the when stage 2 kicks in then all three are at the same level.
The system sucks and the one we have hear is far better, it was used there because u get more torque [about 10-15 more] but lose the same in horse power.
now i have only read about this in a honda manual and only seen a diagram of the system. my instructor showed me this when i was at honda learning center learnig abou the new {then} K20 engines
