March 16, 200719 yr We finally found something both the wife and I could agree on. So we traded her 00 Civic Si in on an 06 Legacy 2.5i Special Edition. Black, 5 spd. Now I'm just wondering, how does this avcs system really work?
March 16, 200719 yr Author Its Subaru's Active Valve Control System. First introduced here is 04 in the STi, and put on all models in 06+
March 16, 200719 yr sounds just like toyota put a little of there technology into it, but they call it vvti variable valve timing. for maximum milage and power......its a good system, i`ve driven many toyotas with it.
March 16, 200719 yr Author sounds just like toyota put a little of there technology into it, but they call it vvti variable valve timing. for maximum milage and power......its a good system, i`ve driven many toyotas with it. And toyota stole it from Honda. VTEC came out in 88 in japan. And toyota's vvti is variable valve timing with inteligence.
March 16, 200719 yr so i take it you already know what it does/is;) honda created it, toyota refined it......
March 16, 200719 yr How well does it work? Isn't it just more complex stuff to break and cost a lot of money to fix?
March 16, 200719 yr Author How well does it work? Isn't it just more complex stuff to break and cost a lot of money to fix? Yes, I know what it is... But not the specifics of how it works. Like engaugement, and exactly what it does. I.E. if its like vvti and just varies the timing. Or like vtec and has a seperate lobe for it to kick over into a complete different cam profile. I could talk a monkey through a vtec motor and make it understand. But this car's stuff is new to me.
March 16, 200719 yr We finally found something both the wife and I could agree on. So we traded her 00 Civic Si in on an 06 Legacy 2.5i Special Edition. Black, 5 spd. Now I'm just wondering, how does this avcs system really work? http://www.subaru.co.nz/Technical_Lab/News/index.php?article=684 does that help? nipper
March 16, 200719 yr Author http://www.subaru.co.nz/Technical_Lab/News/index.php?article=684 does that help? nipper Yes, very much so. You are the man... As usual:headbang:
March 16, 200719 yr I bet that's a nice car to drive.. Good pick :cool: Just because Honda made it, and Toyota stole it (or whatever,) that doesn't have to mean Toyota refined it.. Can't both of them refined it.. Can't two or more companies do the same thing and not be accused to being worse with no explanation? It's a great idea, why wouldn't all manufactures try doing things like this? And then try making them better? It only makes sence.
March 16, 200719 yr The link that nipper referred to talks about varying the timing of the intake camshaft. I thought that the newest engines had SOHC, or did Subaru go back to DOHC?
March 16, 200719 yr The link that nipper referred to talks about varying the timing of the intake camshaft. I thought that the newest engines had SOHC, or did Subaru go back to DOHC? SOHC, it may just affect the intake lobes. I have to read up more on it. I've been wondering how these differnt methods of valve timing variation will change. Some require the use of oil pressure to do all the work. Will be interesting as they hit 150K or more. Of course if it slowly stops working over time, you may not notice it. nipper
March 16, 200719 yr The link that nipper referred to talks about varying the timing of the intake camshaft. I thought that the newest engines had SOHC, or did Subaru go back to DOHC? i thought i read something about twin cams, but only one cam sproket?
March 16, 200719 yr Author I bet that's a nice car to drive.. Good pick :cool: Just because Honda made it, and Toyota stole it (or whatever,) that doesn't have to mean Toyota refined it.. Can't both of them refined it.. Can't two or more companies do the same thing and not be accused to being worse with no explanation? It's a great idea, why wouldn't all manufactures try doing things like this? And then try making them better? It only makes sence. Well, my arguement against toyota's version is the "lift bolts" like to wear out and break at about 80-90k on the vvtl-i engines. the vvt-i doesn't have "lift" like vtec so it is virtually trouble free. buy comparing vvt-i to vtec is like apples and oranges. vtec and vvtl-i are both apples, just different colors. From what I've read avcs is more like vvt-i because of non-variable lift. Just cam timing changes. The subaru sohc motors do indeed have two cams. One in each head. Our dohc's have four cams total.
March 16, 200719 yr Author I grabbed a few shots of the car this evening. You can see the 91 Turbo and the Brat in them as well:) Didn't take time to get "pretty" pics, Its 32 and snowing again here:mad:
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