VVT-i ???

[fj squarepants]

My lack of knowledge has no bounds.
What does the VVT-i stand for on the shroud of the motor stand for?

[RoverGGM]

Variable Valve Timing with intelligence (VVT-i) This system selects the ideal intake and exhaust valve overlap under all engine operating conditions. VVT-i virtually eliminates the traditional compromises between low-end torque and high-rpm horsepower. It also helps enhance fuel economy and reduces emissions so effectively that it eliminates the need for the exhaust gas recirculation (EGR) emissions device.

http://www.toyota.com/help/glossary.html#v

[layonnn]

fj squarepants previously said:

My lack of knowledge has no bounds.
What does the VVT-i stand for on the shroud of the motor stand for?

Variable valve timing is the first part. I don't really know what it does though.

[ikonxone]

Variable Valve Timing Intelligent

[ND40oz]

I've been looking for the RPM crossover point but haven't had any luck finding it, does anyone know what it is?

[RoverGGM]

ND40oz previously said:

I've been looking for the RPM crossover point but haven't had any luck finding it, does anyone know what it is?

It's not a fixed point. It depends on engine temp, throttle position and engine load.

[fj squarepants]

Wow that sounds fancy. Thanks

[ND40oz]

RoverGGM previously said:

It's not a fixed point. It depends on engine temp, throttle position and engine load.

Hmm...on the celica 2zz it was a fixed point, so what's the range?

[Skinpuppet]

Thanx learn something new everyday

[DEWFPO]

On the 1GR-FE only the intake valves are variable. Up to 50 degrees early and up to 50 degrees late so a variable range of 100 degrees on the intake side. The exhaust side is fixed based on the information I have seen.

By being able to adjust the valves opening and closing timing, the engine can produce max HP and TQ numbers while keeping exhaust emissions at a minimum (Tier 2, Bin 5) and provide decent mpg numbers.

DEWFPO