Questions on Variable Valve Timing

1.8-liter VVTL-i (2ZZ-GE) and VVT-i (1ZZ-FE) engine, transmission, exhaust, intake, and performance tuning discussions
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cohocarl
Posts: 1478
Joined: Mon Jul 01, 2002 9:45 am

Questions on Variable Valve Timing

Post by cohocarl »

Just curious, but does anyone know of a good link that has info on the base and GT's variable valve timing? How does the valve timing change? At a certain rpm?, or is it a linear change from idle to redline? Does it vary both the intake and exhaust, or just one? Thanks,Carl
Sold 6/16/04 03 Vibe 5-speed, Hotchkis Sway Bars & Springs, Hooker Aerochamber, Panasonic Stereo, Hitch, Silverstars,04 Saturn Vue 2.2L Ecotec, 5-speed, 01 Stratus R/T Coupe 5-speed (wife's car) 85 Corvette 268 CompCam, 882 heads, FlatTops, 24lb injectors, Hooker Aerochamber true duals, 58mm TB, Holley AFPR, Siamesed intake base, Polished TPI.
NSimkins
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Joined: Sat Jun 08, 2002 5:43 am

Re: Questions on Variable Valve Timing (cohocarl)

Post by NSimkins »

You might be interested in some of this information posted a couple months ago in the Engine Tuning forum:http://forums.genvibe.com/zerothread?id ... d=467Check back in the earlier posts of the Engine Tuning forum for more that I may have missed... there are tons of info posted by Derek and others.Also found a Toyota site (Euro) about VVTL-i (click the link "Learn how VVTL-i works in 5 steps" towards the bottom):http://motorshow.toyota-europe.com/r/r01_07_03.htmlAnd also on the same Toyota site (Euro) about VVT-i:http://motorshow.toyota-europe.com/r/r0 ... _02.html#1
[Modified by NSimkins, 9:56 PM 9/16/2002]
cohocarl
Posts: 1478
Joined: Mon Jul 01, 2002 9:45 am

Re: Questions on Variable Valve Timing (NSimkins)

Post by cohocarl »

quote:Also found a Toyota site (Euro) about VVTL-i (click the link "Learn how VVTL-i works in 5 steps" towards the bottom):http://motorshow.toyota-europe.com/r/r0 ... htmlThanks, The animation deal was just what I was looking for.
Sold 6/16/04 03 Vibe 5-speed, Hotchkis Sway Bars & Springs, Hooker Aerochamber, Panasonic Stereo, Hitch, Silverstars,04 Saturn Vue 2.2L Ecotec, 5-speed, 01 Stratus R/T Coupe 5-speed (wife's car) 85 Corvette 268 CompCam, 882 heads, FlatTops, 24lb injectors, Hooker Aerochamber true duals, 58mm TB, Holley AFPR, Siamesed intake base, Polished TPI.
NSimkins
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Posts: 3091
Joined: Sat Jun 08, 2002 5:43 am

Re: Questions on Variable Valve Timing (cohocarl)

Post by NSimkins »

Found a video of the VVTL-I in action in a Celica:http://subzero.mine.nu/celica/CrazyCeli ... 2.wmvThere are more videos online here:http://www.celicagarage.citymax.com/boa ... 11/964.htm
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