Jump to content


LIFT!!!


Recommended Posts

its what you do when u pick something up :P

but seriously, straight from wikipedia:

"VVTL-i (Variable Valve Timing and Lift intelligent system) is a version that can alter valve lift (and duration) as well as valve timing. In the case of the 16 valve 2ZZ-GE, the engine has 2 camshafts, one operating intake valves and one operating exhaust valves. Each camshaft has two lobes per cylinder, one low rpm lobe and one high rpm, high lift, long duration lobe. Each cylinder has two intake valves and two exhaust valves. Each set of two valves are controlled by one rocker arm, which is operated by the camshaft. Each rocker arm has a slipper follower mounted to the rocker arm with a spring, allowing the slipper follower to move up and down with the high lobe without affecting the rocker arm. When the engine is operating below 6000-7000 rpm (dependent on year, car, and ECU installed), the low lobe is operating the rocker arm and thus the valves. When the engine is operating above the lift engagement point, the ECU activates an oil pressure switch which pushes a sliding pin under the slipper follower on each rocker arm. This in effect, switches to the high lobe causing high lift and longer duration."

Link to comment
Share on other sites


Guest
This topic is now closed to further replies.



  • Join The Club

    Join the Toyota Owners Club and be part of the Community. It's FREE!

  • Latest Postings

    1. 1

      Brake issues

    2. 1

      Brake issues

    3. 1

      Hi, I'm Magazi in NSW I'm a new member

    4. 2

      Muffler change for zr6

    5. 2

      IAC for 1997 Camry Vienta (3vzfe)

    6. 26

      200 series won’t shift past 4th gear

    7. 7

      which engine oil

    8. 0

      G’day from NSW

    9. 3

      Head Unit Replacement for 2010 Toyota Corolla Hatch

×
×
  • Create New...

Forums


News


Membership