yes ive searched, go search your self if you dont believe me
ityped in

"difference between non vtec and vtec"
"vtec", and many others, nothing came up

anyways

what is vtec, i dont get it? i heard people talking about some engines are vtec, some arnt, whats the diff, and what does vtec do, and what cars have vtec?

 

vtec is just dual cam profiling
one profile for low end and i for high end
so you get the best of both worlds


Modified by riceball777 at 10:34 PM 6/27/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by riceball777 &raquo;</TD></TR><TR><TD CLASS="quote">vtec stands is just dual cam profiling
one profile for low end and i for high end
so you get the best of both worlds </TD></TR></TABLE>

Before everyone posts their own definition of VTEC, goto this link.

http://www.team-integra.net/se...ID=45

[/end thread]

 

VTEC is a magical thing invented by honda. Noone really knows what it is. All we can really tell you is it makes any car with a VTEC engine faster than any other car (except another one with a VTEC engine of course).

So if some guy comes up and tells you he has a blown V8 in his car and wants to race, just tell him yours has VTEC and watch as he wets himself and runs away.

Who knows wtf "blown" means anyway. Sounds pretty gay to me. VTEC sounds way cooler.

 

kk cool

u sure it would beat a v8 thow?

cuz id ont wanna make af ool of my self

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by integrarider &raquo;</TD></TR><TR><TD CLASS="quote">kk cool

u sure it would beat a v8 thow?

cuz id ont wanna make af ool of my self</TD></TR></TABLE>
y0 y0 vtec will Beat ANY V8 everyday! watch out for that INSANE 3rd gear VTECH pull!!

 

VTEC=(Valve timing electronic control system) will give you a little more high end power. Gives you a little more edge then most car that dont have it. VTEC has a switch over at 4400 rpm and secondary switch at 5800 rpm.....

NON-VTEC of course dont have vtec and just a bit weaker at high end speed and power.

VTEC is always better though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DrMartin &raquo;</TD></TR><TR><TD CLASS="quote">VTEC=(Valve timing electronic control system) will give you a little more high end power. Gives you a little more edge then most car that dont have it. VTEC has a switch over at 4400 rpm and secondary switch at 5800 rpm.....

NON-VTEC of course dont have vtec and just a bit weaker at high end speed and power.

VTEC is always better though </TD></TR></TABLE>

Actually it stands for Variable Valve Timing and Lift Electronic Control. They just left some letters out because VTEC has a nicer ring to it than VVTLEC.


If you really care to know what all of that means then this explains its function in simple terms: http://auto.howstuffworks.com/question229.htm

 

mainly its use is because we have such little displacement, the only way we can make power is to make it up high.. vtec has higher cam lobe profiling allowing more airflow at higher rpms up to 8k+ since we'd make no power if we shifted at 6k or so

 

It also allows the motor to have race-car spec cam shafts only under certain conditions (VTEC engagement conditions) and still stay emissions friendly for the majority of driving (for some of us atleast).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Smeeg Heed &raquo;</TD></TR><TR><TD CLASS="quote">

Actually it stands for Variable Valve Timing and Lift Electronic Control. They just left some letters out because VTEC has a nicer ring to it than VVTLEC.


If you really care to know what all of that means then this explains its function in simple terms: http://auto.howstuffworks.com/question229.htm</TD></TR></TABLE>

Vtec i a system honda created to enable the engine to get great gas milage and still have power. vtec enable the car to idle better on agressive cam lobes than say a ls motor, me I like the non-vtec motor , but i-vtecs a different story.

also the smaller cam lobes on the cam aren't for "low end torque" they are for idle and gas milage, but the aggresive lobe on the cam is for mid $ high range power.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Smeeg Heed &raquo;</TD></TR><TR><TD CLASS="quote">VTEC is a magical thing invented by honda. Noone really knows what it is. All we can really tell you is it makes any car with a VTEC engine faster than any other car (except another one with a VTEC engine of course).

So if some guy comes up and tells you he has a blown V8 in his car and wants to race, just tell him yours has VTEC and watch as he wets himself and runs away.

Who knows wtf "blown" means anyway. Sounds pretty gay to me. VTEC sounds way cooler.</TD></TR></TABLE>

the concept of VTEC is not invented by honda. it was invented by ferrari back in the late 1980s ( i think). honda only took the idea and used it into their production cars hence HONDA became known for the first to make VTEC ( variable valve timing electronic control).

how it works in a nutshell: at high rpm, u need more air per fraction of time keep your engine breathing healthy. air will only travel as fast as how big your valves open and closes. at higher rpm, they open and close so fast, ur engine is starting to struggle for air. the computer shifts the cam lobes on the camshaft to bigger lobes which pushes the valves down more and for longer duration ( meaning you get more air). this only happens at the higher rpm when ur engine NEEDs it. hence, u get more air, more fuel being injected, and high compression ( due to ur pistons having a constant stroke). this equals more power. it was made for economy. econo box when you are not in vtec and the true potential comes out during vtec.

makes the car easier to build. if u want a daily drive but also power. u can have stockish non vtec lobes and some kick *** vtec lobes.


VTEC comes in a few designs. one for economy, and another for performance

ECONOMY: SOHC VTEC ( eg: 99-00 CIVIC EX, EG9 si, 00 accord....)

u loose power at the higher revs, so VTEC helps to compensate for it. there are 3 valves. 2 of them normally runs and when "VTEC" engages, the 3rd valve runs along with the 2 primary valves. ( i forgot if the 3rd one is an exhuast or intake). it just give your car better flow, for slight increase in power.

PERFORMANCE: all DOHC VTEC engine ( integra gsr, type r, del sol vtec, prelude vtec, nsx, rsx) NOTE: NSX has a total of 4 camshafts so i guess u can say its a QOHC VTEC for that matter but it is still 2 cams per head hence DOHC.

u have decent power without VTEC. at higher rpm VTEC engages. there are 4 valves that run at all times: 2 intake, 2 exhaust. during vtec, all 4 valves get the experience the VTEC lobe on the camshaft so ALL 4 of them get pushed down more and for longer duration. result is a lot more power than SOHC design.

different between the 2:

u get one more valve helping you out on the economy vtec, but you get all 4 of your valves go into maniac mode for the performance VTEC.

NONVTEC:

u experience a decrease in power at the higher rpm. hence, many of these cars have lower redline because they are rather designed for higher displacement so you get the power down low on the power band instead. lets say we live in heaven where going into redline wont blow ur motor. with a NONVTEC engine, going there will just mean less power.

 

so basically vtec is like a cheap little turbo but isnt turbo

 

anything is like turbo. hahahha jk... but yea more air, more fuel, more power. justl like sc, nos, porting, improved camshafts....etc

 

cool thanks

 

VTEC= It's all in your head.

 

I love Honda-Tech people. ( most of them. kind of, actually....I don't know)

 

nice thread

 

tekstyle

 

Its nice that you searched but go onto google and search for "variable valve timing" Im sure you'll find plenty of information there.

 

Ya H-T peoples are great, so much knowledge they share! GooD ThReAd!

 

i didnt know that ferrari had the idea for a variable valve timings system

 

Vtec, unless you're going turbo...

 

not to be rude or anything but you should really go to team-integra.net and sign up and look around. read their articles, you will learn so much and the whole site is about our cars. i used to know nothing but ive learned so much. i suggest you read a bunch, you will learn more and you wont have to make uselss posts. again, dont take it to heart

 

if you want the technical stuff go to http://howstuffworks.com and go the engine/mechanical stuff. type in VTEC there is a nice writeup there. PEACE

AWWW what the hell, for my lazy peeps &gt;&gt;&gt;http://auto.howstuffworks.com/question229.htm