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zetec vct #300344 07/05/02 05:31 AM
Joined: Nov 2001 Posts: 80 St. Charles R Richard Edmonds OP Member
OP Richard Edmonds Member R Joined: Nov 2001 Posts: 80 St. Charles	can someone explain to me what the VCT does on a zetec? and if it hinders performance, if it is possible to remove?? I have a slight clue what it does, but I am not 100% sure. Could someone please help me ? ---------------------------------- '98 gl ATX K&N drop in filter, with gutted airbox, thanx to zetecracing, and hissvt2!! neon lights inside and out, xenon turn indicators, and lowbeams polk audio 5x7's, 2 rockford fosgate 75 watt tweeters, 300 watt Rockford Fosgates, 760 watt xplod amp, and head unit SE 15"s 'da bomb' style muffler, no resonator, duals coming soon!! more than you can afford pal... "Contour" my car... http://www.pbase.com/lokoros/inbox

Re: zetec vct #300345 07/05/02 06:13 AM
Joined: Jul 2000 Posts: 1,692 Warrenville, IL Z ZetecRacing Member
ZetecRacing Member Z Joined: Jul 2000 Posts: 1,692 Warrenville, IL	it is for emissions... far as I can remember any one with a Zetec with VCT that has tried to remove it has cause a CEL doing so. it doesn't hurt performance but from what I learned on the yahoo email list for the Zetec that the Lotus 7 guys didn't want it cause they were less responsive to mods than the non VCT Zetec. Joe Hartley "yes I know it's a MTX Zetec but it beats having a ATX Duratec" Champagne 96 GL MTX some mods dynoed at 114.2whp and 124.4wtq (pre CTA intake) 16.858 @ 80.76mph (yes it's slow but still faster than D Davis) AIM: ZetecRacing My Site My Profile

Re: zetec vct #300346 07/06/02 06:33 AM
Joined: Aug 2001 Posts: 3,950 Chitown L LoCo Member
LoCo Member L Joined: Aug 2001 Posts: 3,950 Chitown	Quote: Originally posted by ZetecRacing: it is for emissions... far as I can remember any one with a Zetec with VCT that has tried to remove it has cause a CEL doing so. it doesn't hurt performance but from what I learned on the yahoo email list for the Zetec that the Lotus 7 guys didn't want it cause they were less responsive to mods than the non VCT Zetec. BLAH BLAH BLAH vct this vct that. Less responsive this less responsive that. Just mod it. 2000 Contour Zetec ATX Hector Mods...I got em' "Contour grills, Contour bills, check out the oil my Contour spills." 2.SLO = 17.6 at 80mph My profile

Re: zetec vct #300347 07/06/02 04:39 PM
Joined: May 2001 Posts: 75 Columbus, OH A ABNeg Member
ABNeg Member A Joined: May 2001 Posts: 75 Columbus, OH	VCT (Variable CDam Timing) on the Zetec works on the exhaust side to eliminate the need for an EGR valve; whether it improves/doesn't affect/detracts from performance is hard to tell since I don't have a non-vct zetec to compare with.....my .02 Is the smoke alarm in your house also known as the "dinner bell"? '99 Zetec VCT Daily Driver Mild Air Filter Mod

Re: zetec vct #300348 07/06/02 05:35 PM
Joined: Aug 2001 Posts: 125 Erie, Pennsylvania C CZboyovski Member
CZboyovski Member C Joined: Aug 2001 Posts: 125 Erie, Pennsylvania	I'm with Hector. 2000 Contour SE ATX Zetec Mods- AIM: CZboyovski SVT exhaust Z\'s Contour

Re: zetec vct #300349 07/27/02 12:24 PM
Joined: Dec 2001 Posts: 24 Connecticut J JonsZX2SR Junior Member
JonsZX2SR Junior Member J Joined: Dec 2001 Posts: 24 Connecticut	VCT let Ford use more aggressive cams in an emissions controlled engine. Compare the ZX2 cams and the Focus cams Intake: ZX2 (VCT) 214 deg @ 0.050", 0.367" lift Focus 205 deg @ 0.050, 0.352" lift Exhaust ZX2 (VCT) 212 deg @ 0.050", 0.338" lift (exact duration not verified, yet) Focus 206 deg @ 0.050", 0.343" lift The VCT advances the exhaust cam 30 crank degrees under certain conditions, including low rpm. This reduces overlap and improves low end torque. VCT also allowed Ford to use longer duration cams in an emissions controlled engine. If you are building a non-emissions motor the VCT isn't going to help performance (except maybe improve low-mid torque in a road course racing application.) However, if you need to meet emissions testing, VCT will let you use longer duration cams, especially at lower rpm, before emissions become a problem. http://home.att.net/~wessonj/Images/INet_11a.gif

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