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vtec vs. i-vtec???

 
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Old 01-31-2009, 12:36 AM
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vtec vs. i-vtec???

so i know what vtec is but what is this i-vtec that the newer hondas and acuras are coming out with. is there a difference in the engine or performance or is it jsut a different name????
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Old 01-31-2009, 12:38 AM
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Re: vtecc vs. i-vtec???

All I know is it's supposed to mean Intelligent-Vtec. Didn't know it could get any more intelligent. :|

http://en.wikipedia.org/wiki/I-VTEC
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Old 01-31-2009, 12:45 AM
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Re: vtecc vs. i-vtec???

intresting i didnt think i could get smarter eaither i just read that page its got alot of info on i.
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Old 01-31-2009, 02:26 AM
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Re: vtecc vs. i-vtec???

Quote:
Originally Posted by Red93Lude View Post
All I know is it's supposed to mean Intelligent-Vtec. Didn't know it could get any more intelligent. :|

http://en.wikipedia.org/wiki/I-VTEC
VTEC is not intelligent. It only has 2 speeds, fast and OMFG!!
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Old 01-31-2009, 02:31 AM
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Re: vtecc vs. i-vtec???

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Originally Posted by OneRedLude View Post
VTEC is not intelligent. It only has 2 speeds, fast and OMFG!!
Don't see what the big deal is with Vtec. lol
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Old 01-31-2009, 05:46 AM
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Re: vtec vs. i-vtec???

I-vtec is explained very thoroughly in this article: http://asia.vtec.net/article/k20a/


also a very detailed youtube clip on i-vtec explained on the R18 motor(8th gen. Civic):


...
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Old 01-31-2009, 01:29 PM
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Icon14 Re: vtec vs. i-vtec???

friend of my got 2003 honda CL7 euro-R.which is i-vtec.as i know i-vtec is depand oil temp.whit good temp i-vtec will kick in from 4000rpm-4500rpm.so is changeble.if oil temp is cooder.vtec will kick in some where around 6000rpm.i did try myself.its very good.i have to c.
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Old 01-31-2009, 03:24 PM
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Re: vtec vs. i-vtec???

I-VTEC engines are stupid :/
It's like, you have four (or six) cylinders, and if it's a VTEC engine you get the normal boom at like 4K RPMS or 5600 RPMS (for the 5th gennies) on ALL FOUR CYLINDERS.
I-VTEC is pretty much just your engine not using ALL of your cylinders until it engages, at which point you'll go from a 2 cylinder engine, to a 4 cylinder engine, or from a 3 to a 6.
It's just a way to save gas and still feel like you're not driving something powered by a lawn mower engine.
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Old 01-31-2009, 10:02 PM
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Re: vtec vs. i-vtec???

It's really interesting to see how misinformed people are. You are referring to Variable Cylinder Management (VCM). That second link does a very good job of explaining what the original i-VTEC does. There are different implementations of it now though.
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Old 02-03-2009, 10:04 PM
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Re: vtec vs. i-vtec???

here's a cool website about the origins of vtec... http://asia.vtec.net/specs/daintegra/

I posted it a while back, so I brought it back... http://www.preludezone.com/showthread.php?t=11729
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Old 02-03-2009, 10:18 PM
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Re: vtec vs. i-vtec???

Quote:
Originally Posted by Rugburn View Post
I-VTEC engines are stupid :/
It's like, you have four (or six) cylinders, and if it's a VTEC engine you get the normal boom at like 4K RPMS or 5600 RPMS (for the 5th gennies) on ALL FOUR CYLINDERS.
I-VTEC is pretty much just your engine not using ALL of your cylinders until it engages, at which point you'll go from a 2 cylinder engine, to a 4 cylinder engine, or from a 3 to a 6.
It's just a way to save gas and still feel like you're not driving something powered by a lawn mower engine.


actually its NOTHING like cylinder cutoff technology, i have no idea where your getting that info from. if you gone to ANY of the links posted in this thread, you'd see how hilariously wrong you are.
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Old 02-04-2009, 07:42 AM
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Re: vtec vs. i-vtec???

Quote:
Originally Posted by zl3369 View Post
friend of my got 2003 honda CL7 euro-R.which is i-vtec.as i know i-vtec is depand oil temp.whit good temp i-vtec will kick in from 4000rpm-4500rpm.so is changeble.if oil temp is cooder.vtec will kick in some where around 6000rpm.i did try myself.its very good.i have to c.
....you know what? i've tried this too...my friend has a CL7 with the h26a7(US version of the euroR which is the hybrid version of the k20a) motor and when the temperature is below 10 degrees F, vtec, i-vtec rather, will kick in at 2490.87 RPM all the way up 10,789 redline. Those Euro-R's are siiiiick I tell ya.

Quote:
Originally Posted by Rugburn View Post
I-VTEC engines are stupid :/
It's like, you have four (or six) cylinders, and if it's a VTEC engine you get the normal boom at like 4K RPMS or 5600 RPMS (for the 5th gennies) on ALL FOUR CYLINDERS.
I-VTEC is pretty much just your engine not using ALL of your cylinders until it engages, at which point you'll go from a 2 cylinder engine, to a 4 cylinder engine, or from a 3 to a 6.
It's just a way to save gas and still feel like you're not driving something powered by a lawn mower engine.
Wow, so you're saying the new Civics with i-vtec motors, fuel efficient as Civics are, will also benefit from deactivating 2 more cylinders? WOW!!

I love I-vtec...can anyone tell me if my TSX has this 4 to 2 cylinder management called VCM?




Guys...please do not give out false information. If you are going to go on a "hunch" or "word of mouth," please make sure it's correct. A simple 10 minute search and read on Wikipedia will verify and answer a lot.

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Quote:
Originally Posted by Red93Lude View Post
All I know is it's supposed to mean Intelligent-Vtec. Didn't know it could get any more intelligent. :|

http://en.wikipedia.org/wiki/I-VTEC
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Last edited by Prelude13; 02-04-2009 at 11:23 AM.
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Old 02-04-2009, 05:52 PM
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Re: vtec vs. i-vtec???

The CL9s did NOT have any form of VCM. AFAIK the new Accord V6 is the first Honda with it.
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