vtech vs. vtech-e

[sblkcamaro70]

what is the difference? i do know e stands for economy but what is internally the differecne?

[turtlecrxsi]

The first one is the base model phone and the second has digital satellite capabilities...

[skotman]

vteche is the european version of vtech

[sblkcamaro70]

huh i was told it stood for economy. i suppose then if e is euro then they would have the same head design

[FrodoGT]

Ok because you obviously didn't understand the phone reference...Its VTEC, not VTECH, and the difference...yes the E is for economy, meaning that while the engine is not under high loads and while at low RPM the engine will close one intake valve, gaining you economy. When you punch it, it will open it up and function normally.

[Shaguar47]

vtec-e is just the economy version of the vtec system. It bascially uses the cam timing more for better gas mileage and less fuel consumption. It doesn't however have that edge which normal vtec has which is getting some extra power in the upper rpms. I wouldn't go for it unless you either A) want the fuel economy or B) just want to have it in your car so you can say you have vtec. But it would be interesting to see how the car would do with the CVT tranny taken out and a ex 5spd tranny bolted up. Hmmmmm.

[sblkcamaro70]

WOW... i cant believe i typed vtech instead of vtec. i am a f#$%ing retard. my excuse i am going to say is it was late at

[2poor2tune]

i have done it before. i feel your pain. people round here dont take that easily

[sblkcamaro70]

yeah i know that is why i am so imbarrassed. they can come down on people hard.

[turtlecrxsi]

Originally Posted by sblkcamaro70

yeah i know that is why i am so imbarrassed. they can come down on people hard.

I was just playing around. There is actually a stickied thread about the spelling of it, but I thought the phone thing was more amusing.

You should see how many people try to sell their civics on autotrader with their vtech engines. I bet they get great reception... um... yeah.

[sblkcamaro70]

yeah i see that all the time when they sell their cars. i actually do have a vtech phone.

[Kven]

Originally Posted by Shaguar47

vtec-e is just the economy version of the vtec system. It bascially uses the cam timing more for better gas mileage and less fuel consumption. It doesn't however have that edge which normal vtec has which is getting some extra power in the upper rpms. I wouldn't go for it unless you either A) want the fuel economy or B) just want to have it in your car so you can say you have vtec. But it would be interesting to see how the car would do with the CVT tranny taken out and a ex 5spd tranny bolted up. Hmmmmm.

i-VTEC deals with cam timing

In normal VTEC; there's a high and low cam profile(two low-profile lobes and one high one inbetween them). When VTEC "kicks in", it simply switches from hi to low(connects all the rockers together). In VTEC-E, there are still low and hi profiles, except the low profile lobes are staggered(one opens normally, while the other one barely opens the valve; creates a swirl the helps suspend the a/f mixture). The hi-profile on the VTEC-E engine is usually a little milder than regular VTEC's low profile but not as aggressive as the high-profile.

I believe the cam profile widths are also different from the regular VTEC ones(thinner, maybe)

[Shaguar47]

Originally Posted by Kven

i-VTEC deals with cam timing

In normal VTEC; there's a high and low cam profile(two low-profile lobes and one high one inbetween them). When VTEC "kicks in", it simply switches from hi to low(connects all the rockers together). In VTEC-E, there are still low and hi profiles, except the low profile lobes are staggered(one opens normally, while the other one barely opens the valve; creates a swirl the helps suspend the a/f mixture). The hi-profile on the VTEC-E engine is usually a little milder than regular VTEC's low profile but not as aggressive as the high-profile.

I believe the cam profile widths are also different from the regular VTEC ones(thinner, maybe)

The cam does alter timing to reach that high cam profile. It will alter timing to reach the low cam profile. So it does change the cam timing, just not constantly. Am i not right?

i-vtec, from what i understand, is constantly adjusting the cam.

[FrodoGT]

No..the cam timing is set per profile..the cam gears are directly attached to the camshaft, and are driven by the belt...unless the cam lobe is actually in a different time than the low profile the timing wont change by any other means.

[sblkcamaro70]

just read up
http://auto.howstuffworks.com/framed...whatsvtec.html