86BRATMAN Posted March 16, 2007 Share Posted March 16, 2007 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? Quote Link to comment Share on other sites More sharing options...
2X2KOB Posted March 16, 2007 Share Posted March 16, 2007 What's avcs mean? Quote Link to comment Share on other sites More sharing options...
86BRATMAN Posted March 16, 2007 Author Share Posted March 16, 2007 Its Subaru's Active Valve Control System. First introduced here is 04 in the STi, and put on all models in 06+ Quote Link to comment Share on other sites More sharing options...
75subie Posted March 16, 2007 Share Posted March 16, 2007 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. Quote Link to comment Share on other sites More sharing options...
86BRATMAN Posted March 16, 2007 Author Share Posted March 16, 2007 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. Quote Link to comment Share on other sites More sharing options...
75subie Posted March 16, 2007 Share Posted March 16, 2007 so i take it you already know what it does/is;) honda created it, toyota refined it...... Quote Link to comment Share on other sites More sharing options...
2X2KOB Posted March 16, 2007 Share Posted March 16, 2007 How well does it work? Isn't it just more complex stuff to break and cost a lot of money to fix? Quote Link to comment Share on other sites More sharing options...
86BRATMAN Posted March 16, 2007 Author Share Posted March 16, 2007 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. Quote Link to comment Share on other sites More sharing options...
nipper Posted March 16, 2007 Share Posted March 16, 2007 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 Quote Link to comment Share on other sites More sharing options...
86BRATMAN Posted March 16, 2007 Author Share Posted March 16, 2007 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: Quote Link to comment Share on other sites More sharing options...
Phizinza Posted March 16, 2007 Share Posted March 16, 2007 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. Quote Link to comment Share on other sites More sharing options...
ron917 Posted March 16, 2007 Share Posted March 16, 2007 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? Quote Link to comment Share on other sites More sharing options...
nipper Posted March 16, 2007 Share Posted March 16, 2007 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 Quote Link to comment Share on other sites More sharing options...
johnceggleston Posted March 16, 2007 Share Posted March 16, 2007 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? Quote Link to comment Share on other sites More sharing options...
86BRATMAN Posted March 16, 2007 Author Share Posted March 16, 2007 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. Quote Link to comment Share on other sites More sharing options...
86BRATMAN Posted March 16, 2007 Author Share Posted March 16, 2007 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: Quote Link to comment Share on other sites More sharing options...
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