1 Answer:
  • jason anthony
    cam phasing.
    Advantage:VVT improves torque delivery at low / medium speed; Variable lift and duration lift high rev power.
    Disadvantage:More complex and expensive
    Who use it ?Porsche 911 Turbo
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  • What happens if tappet are not adjusted?

    The valve will open sooner and close later. You may observe air leaks in the combustion chamber, leading to less available air for proper combustion. The power and performance of the engine will decrease. Fuel consumption of the engine will increase.