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| caseyaberhart |
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i have a stupid question... i have a mate with a series 3 au xr6 and we were wondering what VCT stands for....
i took a stab and said Variable Cam Timing??
_________________ Stock EL Gli Sedan, Tickford 98 EL/AU Hybrid Swapped in after aux shaft failure due to a lazy mechanic who can't service cars and aftermarket distributor-of-death-made-in-china crap. |
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| twase |
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Good Stab.
_________________ BF Fairmont Ghia Series II update. |
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| caseyaberhart |
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so i take it i'm correct?
is it anything like VTECH honda's?
_________________ Stock EL Gli Sedan, Tickford 98 EL/AU Hybrid Swapped in after aux shaft failure due to a lazy mechanic who can't service cars and aftermarket distributor-of-death-made-in-china crap. |
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| fordfreak ef |
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VCT stands for "= Crap to do up with aftermarket cams"...
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| caseyaberhart |
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so like the honda vtech, the computer can control the cam timing
_________________ Stock EL Gli Sedan, Tickford 98 EL/AU Hybrid Swapped in after aux shaft failure due to a lazy mechanic who can't service cars and aftermarket distributor-of-death-made-in-china crap. |
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| sikford |
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only thing is it works while under cruise and not when u put the boot into it, it changes the timing and gives lower rpm and increased fuel econamy aparetly but i get s**t k's anyway.lol
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| smiley235 |
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Its not like vtec, vtec phsically moves the position of the cam to alter valve timing. Not exactly sure how VCT changes cam timing.
_________________ 178.3 rwkw
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| caseyaberhart |
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smiley235 wrote: Its not like vtec, vtec phsically moves the position of the cam to alter valve timing. Not exactly sure how VCT changes cam timing.
can anyone explain to me how it works??? i'm quite interested
_________________ Stock EL Gli Sedan, Tickford 98 EL/AU Hybrid Swapped in after aux shaft failure due to a lazy mechanic who can't service cars and aftermarket distributor-of-death-made-in-china crap. |
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| sikford |
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as far as i know and have had discussions with the guys at G&D performance, it only works at cruise as i said before and it retards cam timing to give you better economy, i wish it would work through out the rev range as you could change it to give better down low and middle tourqe and what not.but yeah i dony know why ford did it but its a grouse engine and definatly has potential with some mods as its similar to the HP head.
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| Steady ED |
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caseyaberhart wrote: smiley235 wrote: Its not like vtec, vtec phsically moves the position of the cam to alter valve timing. Not exactly sure how VCT changes cam timing. can anyone explain to me how it works??? i'm quite interested VTEC doesn't change cam timing, it actually changes cam lift. From memory it does it by changing the rocker ratio somehow? Dunno, cant remember now. VCT moves the whole cam/cams.
_________________ ED XR8 Sprint - S-Trim, V500, 249rwkw |
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| caseyaberhart |
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[/quote]
VTEC doesn't change cam timing, it actually changes cam lift. From memory it does it by changing the rocker ratio somehow? Dunno, cant remember now. VCT moves the whole cam/cams.[/quote] so can anyone explain how VCT achieves this?
_________________ Stock EL Gli Sedan, Tickford 98 EL/AU Hybrid Swapped in after aux shaft failure due to a lazy mechanic who can't service cars and aftermarket distributor-of-death-made-in-china crap. |
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| fnp |
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Age: 38 Posts: 4401 Joined: 25th Mar 2005 Ride: BA XT, BA XR6T, ED Ghia 5.0 Location: Perth |
There was a good youtube video posted a while ago by (I think) xcabbi, if anyone could give me a link I'd be grateful.
Basically, the camshaft is suspended in a sproket and can be physically pushed fowards or backwards laterally in relation to the valve gear (using pressurized engine oil in chambers on either side of the camshaft) to advance or retard the timing. Its hard to explain in words but the youtube video I have in mind explains it really well. Edit: here's a simular one though not what I had in mind: [youtube]http://youtube.com/watch?v=dSZXepU7Sks[/youtube]
_________________ What's the difference between a Holden and a sheep? It's less embarrasing getting out of the back of a sheep.. |
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| hans hartman |
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fnp wrote: There was a good youtube video posted a while ago by (I think) xcabbi, if anyone could give me a link I'd be grateful. yes,xcabbi posted it------youtube-car engine ford ti-vct 3d,enjoy! good stuff,more $$$$$$$$$$$$$ in service costs Basically, the camshaft is suspended in a sproket and can be physically pushed fowards or backwards laterally in relation to the valve gear (using pressurized engine oil in chambers on either side of the camshaft) to advance or retard the timing. Its hard to explain in words but the youtube video I have in mind explains it really well. Edit: here's a simular one though not what I had in mind: [youtube]http://youtube.com/watch?v=dSZXepU7Sks[/youtube] 
_________________ R.I.P HANS HARTMAN |
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| fnp |
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Age: 38 Posts: 4401 Joined: 25th Mar 2005 Ride: BA XT, BA XR6T, ED Ghia 5.0 Location: Perth |
Found the video I was looking for.
[youtube]http://youtube.com/watch?v=Ba-oyIjGWGE[/youtube]
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| FordFairmont |
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Posts: 6113 Joined: 8th May 2007 |
the above vid is very interesting...... clever f**k who invented VCT thats for sure
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