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Old 22 Dec 2012, 12:10 am
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Default Honda Engine Questions. About V-TEC?

Is V-TEC in every Honda and how good is it at improving engine performance? I've been watching Youtube videos of V-TEC kicks and I'm kinda blown away (no pun intended). I have a Honda and i've witnessed, on more than several occasions, the extreme power these smaller, but very good, engines can produce. If I was to go racing (not saying I would) in my un modified (stock) Civic, would V-TEC kick in?































My other question is. I've heard Honda's are engineered for high RPM's. In these videos I've been watching, the guys are redlining the tachometer. If these engines are engineered for very high RPM's, are they doing any damage (current and in the future)? These relates to the V-TEC question because it only seems to kick in after they've red lined.































Real answers and Honda owner answers (if you don't own a Honda but know a lot about them, please chime in) are much appreciated. Please explain yourself as well.















I'm watching another video.































How would I start the VTEC in my stock Honda Civic?















And my car is AUTOMATIC. If that makes a difference















If VTEC is on my valve covers, I can pop the hood, look at the engine and say, "Hey, I got VTEC" right?
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Old 22 Dec 2012, 12:24 am
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VTEC would be on your valve covers. VTEC Variable Valve Timing and Lift Electronic Control. Rather than pontificate, just read the Wikipedia link on VTEC. Quite ingenious.































Edit: Yes Nicolas. Just like if it says Honda on the side of the car, it's a Honda. ;D































en.wikipedia.org
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Old 22 Dec 2012, 12:31 am
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Depending on the year,only the Si and EX models are commonly equipped with a VTEC.The stock VTECs came in SOHC,but a lot of people put the DOHC in them.VTEC isn't activated usually until around 5,000rpms.Some Hondas don't have VTEC wrote on the valves,but might still be VTEC.There's a link in the sources,it's for the VIN decoder,type in your VIN,go down to engine capacity,and it'll tell you if you have VTEC or not.
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Old 22 Dec 2012, 12:47 am
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One thing I notice is that your Civic is an automatic.















Therefore it does not have Honda'a VTEC performance engine.















So, to answer your question...















Yes, VTEC are in most, if not in all Honda engines built today.















But they are sort of "over glorified" and is commonly misunderstood.















The VTEC in Honda's economy cars, particularly in the Civic where they have the R18 engines; are not aimed for performance but rather for economy. So therefore the performance you get out of it isn't significant.















Additionally, the VTEC engines you see in most YouTube videos that have hard VTEC kicks are Honda's high performance engines. H22s, B16, B18, K20s, K24s. (FYI, the letter is short for the type of engine and the numbers are short for the size of engine, example: K24 is a Honda K series engine the size of 2.4 liters)















All these engines are aimed for high revving performance, whereas the R18 in the regular Civics are not.















So you may be wondering: "Hey my Civic has VTEC, so can it be like a sports car?". Quick answer: No.















Honda aren't going to give out performance VTEC engines that easily, especially in a Civic.















You have to remember that the Civic has a performance oriented trim, the Si.















The Si Civic is the car with the different engine than the regular Civics, (i.e. DX, LX, EX, EX-L).















To answer your other question: " If these engines are engineered for very high RPM's, are they doing any damage (current and in the future)?":















Depends. These guys highly maintain their engines. They do oil changes a lot sooner than most. They make sure they have the right cooling system.















But yes, bringing those RPMs high constantly will indeed heat up the engine and it's components. So wear an tear is much sooner.















































There are other variants of "VTEC" done by other manufacturers as well: MIVEC from Mitsubishi, AVCS from Subaru, VVT-i/VVTL-i from Toyota















The list goes on, so this technology isn't ground breaking.































































You can try it yourself, get in your Civic and floor the gas pedal.















The ECU will figure it all out and old your RPMs at a higher rate.















You'll notice that the VTEC doesn't distinctively kick in.















Why? It isn't a performance oriented VTEC engine.
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Old 22 Dec 2012, 01:02 am
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naww vtec isn't in every Honda but mostly all of them. and theres like two types of vtec, vtec "performance" and vtec "econo" lol like the k20a3
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Old 22 Dec 2012, 01:23 am
C7S C7S is offline
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VTEC is just a system that plays with the timing of the combustion. I believe it is now in All new Honda's.































It was first offered on the 1996 Honda Prelude VTEC, where VTEC was part of the trim name.































There has never been a failure with any VTEC engine. They are extremely reliable.































Engines still get damaged from high revving, as it creates more heat and friction inside the engine. Every engine also has a rev limiter that keeps you from going over the redline to prevent blowing up the engine. Some older high mileage engines do blow up if you hold it in redline for over 3 seconds while newer younger engines fair a little better.































If it says VTEC on your valve covers, then yes it has VTEC.































VTEC feels similar to a low boost turbocharger. As you get higher up in the rpm's, there is a short burst of power that helps you accelerate faster. VTEC typically kicks in at 5000rpm+. In some cars, you cannot feel VTEC. The lighter the car, the more you feel it. Fo example, I do not notice it in my mother's Honda Accord, but I do notice it in an Acura TSX.































Manual or auto. Does not make a difference.
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