Explain VVT-i
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Driver
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From: Louisiana
Explain VVT-i
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.
Lexus Connoisseur
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From: USA
Originally Posted by LexTPOP
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.
"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."
Lexus Connoisseur
Joined: Mar 2001
Posts: 19,896
Likes: 610
From: USA
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
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
Pole Position
Joined: Sep 2004
Posts: 363
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From: Missouri
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
This was easy to find try the search function
oh and it was a sticky
Ben
Thread Starter
Driver
Joined: Nov 2005
Posts: 129
Likes: 0
From: Louisiana
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.
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.
Last edited by LexTPOP; Feb 15, 2006 at 09:29 PM.
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