Exsys2000

I know that many of our cars have VVT-i which I understand is Variable Valve Timing - intelligent. My questions are what is it? What does it do? How does it work? It seems to be highly sought after so how common is it? If it is rare, did I get lucky that both of my GS cars have it? I have performed a search on this but I obviously have not found my answers.

flipside909

http://www.lexus.com/models/glossary.html?entry=vvti

"VVT-i continually optimizes intake valve timing over a broad range of engine speeds. It increases torque at lower speeds and horsepower at higher speeds to improve engine performance and fuel economy, as well as help reduce emissions."

flipside909

Here are a few more articles that explain what and how Variable Valve Timing works...

http://www.streetracersonline.com/ar...amshafts/3.php
http://www.billzilla.org/vvtvtec.htm
http://auto.howstuffworks.com/camshaft6.htm
http://www.ukcar.com/features/tech/Engine/vv/vvt_3.htm

Burton

https://www.clublexus.com/forums/sho...d.php?t=114233

This was easy to find try the search function

oh and it was a sticky

Ben

Exsys2000

I did try the search and I did not find that thread. Thank you guys for the info. That helps. Again, how common is it? Approximately what percentage of 2nd gen GSs have VVT-i? Does it add to the value significantly if the car has it?

I do see now why I did not find the thread. I was looking specifically in the GS forum as I was not interested in what it did for other models but in hindsight, the explaination could be anywhere.

Neo

iTrader: (3)

Approximately 100%.

Exsys2000

Thank you. I was not aware that it was on all of them. I thought it was something special on select models.

TeflonGS

Isn't it Toyota's version of VTEC?