07-31-2004, 05:21 PM
The VVT-i system (notice the lack of an L) now days is present on almost all Toyota engines, from it's low-end 1.5L inline-4 all the up to the high-end engine used in SUV's and the company's Lexus line of cars.
The 2ZZ engine on the Matrix XRS, previously used on Toyota's Celica line of cars, and now even on the XRS model Corollass, contains an enhanced version of the VVT-i system, called VVTL-i, where the L refers to "lift".
"Lift" is referred to a stage in the RPM range in which, when combined with the right engine conditions, the stroke length of the engine valves are slightly increased, allowing for longer intake/outtake time, higher fuel intake, and hence overall power of the engine. IIRC, the lift is set to kick in at 7500rpm, when the pedal is close to fully pressed, and the engine is sufficiently warmed up. On flat ground, the difference in power can be felt and heard quite clearly. It's quite a lift.
B) :ph34r:
The 2ZZ engine on the Matrix XRS, previously used on Toyota's Celica line of cars, and now even on the XRS model Corollass, contains an enhanced version of the VVT-i system, called VVTL-i, where the L refers to "lift".
"Lift" is referred to a stage in the RPM range in which, when combined with the right engine conditions, the stroke length of the engine valves are slightly increased, allowing for longer intake/outtake time, higher fuel intake, and hence overall power of the engine. IIRC, the lift is set to kick in at 7500rpm, when the pedal is close to fully pressed, and the engine is sufficiently warmed up. On flat ground, the difference in power can be felt and heard quite clearly. It's quite a lift.
B) :ph34r: