View Full Version : v-tec or vvt-i?


dano2083
06-04-2004, 06:14 PM
Is v-tec the same thing as vvt-i and what exactly does it do.

Kaeon
06-04-2004, 06:22 PM
Here is some info on the v-tec http://auto.howstuffworks.com/question229.htm
its Variable Valve Timing

ChrisSS
06-04-2004, 06:24 PM
vtech = OLD
VVT-I = NEW

however they both do the same thing in terms of function. Its just that the VVT-I is a smart system that can determin how the driver drives and adjust accordingly.

vtech is always happening in one given way.

JDMxB
06-04-2004, 06:26 PM
Ok, there is a whole lot of incorrect information being flung around in this post.

1. Vtec is different from VVTI being that Vtec only engages at a certain RPM--unlike VVTI which is continuous. VVTL-I found in other Toyota motors is most similar to Vtec, where two cams are involved and they have a crossover, etc. VVTI is not the same as VVTL-I.

2. VTEC is NOT ON AT ALL TIMES.

3. VTECH MAKES PHONES.

DJ_SpaRky
06-04-2004, 06:31 PM
Here's my rant about this old topic
1. SEARCH :roll:

2. V-Tech makes Phones, not motors. :roll:

3. here is the proper info 8)

Honda:
VTEC = Variable Valve Lift
iVTEC = Continuous Variable Valve Timing

Toyota:
VVTL-i = Variable Valve Lift
VVT-i = Continuous Variable Valve Timing

They ARE different, all four, the 1NZ-FE has VVT-i.


Hope this answers your question.

:twisted:

EDIT: JDMxB beat me to it.

Kaeon
06-04-2004, 06:42 PM
omg lol just looked at the phone in our shop, its a V-TECH :shock:

TwiztedTC
06-04-2004, 06:55 PM
VVTL-i is found in my 2ZZ-GE motor in my Celica and it is far more refined then V-TEC found in different honda motors like the B16A2, B18B, B18C1 or B18C5...

im gonna miss "Lift" at 6000 rpm's when i get my tC

colorguardrifleman
06-04-2004, 07:00 PM
ok Idid a lot of reseach on this frist vtec is the old version of honda engines now honda has vteci which is come on say it with me variable valve timing and electronic lift control with inteligence and toyotas vvti is the same thing as vteci but just a different name copyright laws you know thats why ford has z tec toyotas is variable valve time with intelegence

JDMxB
06-04-2004, 07:04 PM
ok Idid a lot of reseach on this frist vtec is the old version of honda engines now honda has vteci which is come on say it with me variable valve timing and electronic lift control with inteligence and toyotas vvti is the same thing as vteci but just a different name copyright laws you know thats why ford has z tec toyotas is variable valve time with intelegence

DUDE-- iVTEC is NOT LIKE VVTI!!!!!!!!!!

No they are not alike at all, because iVtec still features two cams with a distinct lift and crossover, the VVTI does not.

iVtec is almost the same as Vtec, which in itself is nothing like VVTI.

You guys can believe whatever you want--but i'm done with this, there is nothing equivalent to VVTI in the Honda engine architecture.

TwiztedTC
06-04-2004, 07:12 PM
VVTL-i = but better than V-TEC

ASUgradinWA
06-04-2004, 07:21 PM
ok Idid a lot of reseach on this frist vtec is the old version of honda engines now honda has vteci which is come on say it with me variable valve timing and electronic lift control with inteligence and toyotas vvti is the same thing as vteci but just a different name copyright laws you know thats why ford has z tec toyotas is variable valve time with intelegence

DUDE-- iVTEC is NOT LIKE VVTI!!!!!!!!!!

No they are not alike at all, because iVtec still features two cams with a distinct lift and crossover, the VVTI does not.

iVtec is almost the same as Vtec, which in itself is nothing like VVTI.

You guys can believe whatever you want--but i'm done with this, there is nothing equivalent to VVTI in the Honda engine architecture.

He's very right, while they both are there to help engine preformance they are very different things.

tC_Junkie
06-04-2004, 08:54 PM
if you have to ask....does it really matter??? who cares!

itimebomb
06-04-2004, 09:52 PM
ask any honda service department about vtec, they'll tell you its a joke. first off your manual says you HAVE to bring it in every 5K to get the valves adjusted, that and the pin/lever thing that engages the vtec usually breaks by about 15K and is stuck on or off. really you can't feel the ____ anyways, but then again it's not designed to be.

now vvt-i? pure genius

i love toyota

LeBeastMan
06-04-2004, 10:04 PM
:roll: :roll:

4rcdfed
06-04-2004, 10:13 PM
ask any honda service department about vtec, they'll tell you its a joke. first off your manual says you HAVE to bring it in every 5K to get the valves adjusted, that and the pin/lever thing that engages the vtec usually breaks by about 15K and is stuck on or off. really you can't feel the ____ anyways, but then again it's not designed to be.

now vvt-i? pure genius

i love toyota

please don't tell me you are one of those outsourced workers for a dealership, seriously its almost getting as bad as hiring over seas for microsoft tech support. The employees don't know ____ about their product or competitors. I have been working with imports for a very long time, and not once have i heard a case of a pin break, and vtec being stuck on. Neither have i seen any problems with valvetrain unless someone over revs past the rev limit like an idiot.. People have gone well over 45k miles without an adjustment, and when the adjustment time comes, they aren't off by much. Drive an ls integra and then drive a gsr, not like its a 20 second difference, but im pretty sure you would say that the gsr definately is quicker then the ls... am i right? Thats basically vtec vs non vtec. Have you not driven any of the "competition" ? i know the gsr is non existant these days in the new car market, but if you talk like you do about cars, then im sure you have been in the industry as long as you act like you have. :roll: If you love toyota so much, then tell them to make a quick car please... and no honda's aren't racecars, unless built that way off the dealer. (so im not on honda's sack) But i don't see anything quick out of toyota today... and please don't answer me with saying the TC when its out... :shock:

LeBeastMan
06-04-2004, 10:15 PM
now thats what I call PIMP SLAP!!!!! :lol:

iZero
06-05-2004, 02:15 AM
Hooray for marketing terms!

JSVH
06-05-2004, 03:03 AM
No offence to anyone involved but, This thread sucks :P

ChrisSS
06-05-2004, 03:24 PM
in situations like this each person will think they know more than the other..

in anycase regaurdless what anybody may think or belive.. vtech and vvti are the same thing in terms of function not operation

so roll the eyes :roll: and get fired up but that's the jist of it.

4rcdfed
06-05-2004, 07:57 PM
in situations like this each person will think they know more than the other..

in anycase regaurdless what anybody may think or belive.. vtech and vvti are the same thing in terms of function not operation

so roll the eyes :roll: and get fired up but that's the jist of it.


Thank you father :shock: If you people are going to try to rag on something atleast spell it right :lol:

bmukai
06-06-2004, 07:11 AM
Although Vtec does pull harder when lift is engaged than vvtl-i. But most of the people I know that use forced induction tend to think Valve lift is pointless cuz it seems to cause a lot of problems with higher Psi.

JDMxB
06-06-2004, 08:28 AM
in situations like this each person will think they know more than the other..

in anycase regaurdless what anybody may think or belive.. vtech and vvti are the same thing in terms of function not operation

so roll the eyes :roll: and get fired up but that's the jist of it.

No--wrong again because you speak to other people worldwide on a VTECH...you can't do that with a VVTI, sorry.

"so roll the eyes"--what are you going to do next man, "show me the hand because the face don't understand"?

4rcdfed
06-06-2004, 06:24 PM
Although Vtec does pull harder when lift is engaged than vvtl-i. But most of the people I know that use forced induction tend to think Valve lift is pointless cuz it seems to cause a lot of problems with higher Psi.

Im pushing 12lbs on a built block (b16a2) and vtec is my friend... can you explain why FI people are running b20 vtec hybrids over b20 blocks with stock b20 head? not saying either is better. Do you run FI yourself? or this is a my friend said this thing?

mgithens
06-06-2004, 08:38 PM
ask any honda service department about vtec, they'll tell you its a joke. first off your manual says you HAVE to bring it in every 5K to get the valves adjusted, that and the pin/lever thing that engages the vtec usually breaks by about 15K and is stuck on or off. really you can't feel the ____ anyways, but then again it's not designed to be.

now vvt-i? pure genius

i love toyota

so what you are really saying is that you have never even seen an S2000?? you tell me for one second that you honestly believe that a different cam lobe doesn't cause a huge surge of power at 4750rpm... the engine runs like a Civic until then, it gets over 30mpg on the highway... but after you get rolling and engine is headed towards is approx 9000 red line... it screams like a CBR...

VTEC is a "best of both worlds" scenario, it's weakness comes in that it is tuned to two specific driving styles / techniques... low is quiet and conservative... the other is the "let her rip" end of the spectrum... and it absolutely works...

now VVT is what Toyota and BMW (they call it VANOS) have been using... it is basically working by advancing the camshafts opening point to an earlier time in the cycle... so when the air is moving slower (2000rpm) it is opening at the most opportune time, and when the engine is screaming (5000rpm) it is again opening slightly sooner, but it is the most opportune time... Porsches have done this since the 70s... the new BMWs using a combination of both, they ride on one cam, but they change the actual lift and timing of that lift over the rull rev range - the latest 7series don't have a throttle plate, they actually control the engines rpm by adjusting the valves... now THAT is trick...

scionxb04
06-07-2004, 04:58 AM
all those "different technologies" u guys have listed all do the exact same thing...they change valve lift.....some do it progressivley...some kick in....either way they change valve lift....and or valve timing

LeBeastMan
06-07-2004, 05:48 AM
children children..... we come here to these forums to express our love to this new breed of toyotas called Scion. And here I see that our ignorance just comes afloat faster than cork would..... If you like VTEC then like VTEC... if you like VVTI then like VVTI... but noooo... cant do that right? must try to put down the beloved H, you know... the way some of you sound... (or read in this case) just tells me that your asses have been smoked a bit too much by the beloved lawnmower engine called Honda.... and that my friend must sting... oh well... or if that is not the case... then there is something else... dont know... but sounds either like envy or like I stated at the begining... ignorance... dont dog the other brand... there is no need to... want to prove it? then get your vvti and build it up.. and go smoke some vtec asses (that is if you can...) post some facts... some proof that you did... then claim your respect.... but then again... that my friends... is just my humble opinion...

as usuall.... with respect

The Beast

scionxb04
06-07-2004, 06:02 AM
"just tells me that your asses have been smoked a bit too much by the beloved lawnmower engine called Honda"
so i suppose i cant beat a civic with a sohc d16 just cause it has vtec? LOL
ive absoulutely smoked many honda cars with d series motor.....even one that was semi built...he put a whole 122whp down on dyno.....which is really good if u go to http://www.d-series.org and read.....but as for beating anything with a b16 or bigger...not gonna happen unless the driver has never had lessons from a professional....which is 99% of the people on the road....most people dont even shift right....
power to weight....if u got the cash u can build the motor up to make just about any amount of power u want....this game of speed comes down to money...not brand....
and most people who make big power in honda's drop the vtec all together and go to another valve train setup all together.....vtec vvti etc etc is for FUEL ECOMONY....and in my 2k civic si with b18c with b16head the vtec killer cams i tried made another 13hp and 8ft lbs of torque over jun stage3....nuff said...go read
fyi..im building a b18b motor up for boost...no vtec....copying a setup that made over 400whp with garret T04S (t4/60-1) with .84 a/r turbine....once again...no vtec....

mgithens
06-07-2004, 02:00 PM
all those "different technologies" u guys have listed all do the exact same thing...they change valve lift.....some do it progressivley...some kick in....either way they change valve lift....and valve timing

this is incorrect...

VTEC changes the point where the valve begins to open and how much lift the valve will receive - so at a specific rpm the engine jumps to a totally different cam lobe and performance is completely different...

VVT changes the point where the valve begins to open, but the lift remains the same... the difference is that over the rpm range the valves open sooner as the revs climb...

these provide two very different engines... I prefer the latter, because the VTEC requires the driver to maintain the upper rpm to get a sporting engine, whereas the VVT allows for a smoother delivery of power.

xBMNx
06-07-2004, 07:54 PM
ask any honda service department about vtec, they'll tell you its a joke. first off your manual says you HAVE to bring it in every 5K to get the valves adjusted, that and the pin/lever thing that engages the vtec usually breaks by about 15K and is stuck on or off. really you can't feel the ____ anyways, but then again it's not designed to be.

now vvt-i? pure genius

i love toyota

someone needs a shovel...its getting pertty deep

hotlava1096
06-08-2004, 04:59 AM
ok before everyone kepps making fools of themselves take it from someone who has owned and studied toyotas and hondas'

vvti- variable intake cam timing, It does not effect lift and is not able to allow an engine to make much more power,butis quite good for driveability and torque.
vvtl-i- variable intake cam timming as well as variable lift, this system both cahnges intake cam timing and has to seperate cam profiles which change over a a set rpm.
vtec-varable lift, this also changes cam profile at a set rpm when certain conditions are met. like having a racing and a regular cam in 1 car. basically the best of diveability and power.
i-vtec- vtec with variable cam timing as well. basically the same thing as vvtl-i except the exahust cam is variable as well.

so to sum it up
i-vtec is slightly better than vvtl-i which is better than just vtec and they are all bettec than vvti which is just a basic system.

Torokun
06-11-2004, 02:18 AM
God.... this thread reminds me of when Toyota first introduced vvt-i...

I am sure there are people in Honda's camp arguing why vtec is better...

But, when Toyota first introdueced vvt-i most of car mags scored it higher than then vtec (now ivtec...). In fact, I can't remember any mags giving Honda a better score...

But, than again, who cares? I personally think vtec is an excellent engine. It bothered the hell out of me though... having to keep the car reved up all the time...

But, just like the our beloved Xb, newer Honda's behave differently. My Civic Si (EP) didn't behave anyting like 90's HOnda....

mgithens
06-11-2004, 02:44 AM
I won't say one is better than the other... I mean in one camp you have VTEC which has the benefit of two engines in one, it is almost like hitting a "mode" button...

and then there is VVT in the other corner... no "on the cam" boost, but awesome power throughout the driveable range... BMW believes in that setup, Toyota has their flavor... great...

better?? who knows... but the S2000 screams when you hit about 4750... I always joke my friend about his CBR2000... I feel like I am driving a stolen car when I "race" his car... but it is fun... Toyota can't lay this claim... they don't contend for that $30k racing dollar... that's okay... they did (supra) and I am sure they will again...

tcm_xB
10-07-2004, 02:38 AM
ask any honda service department about vtec, they'll tell you its a joke.

That statement is a joke. I seriously smiled after reading it.

first off your manual says you HAVE to bring it in every 5K to get the valves adjusted,

Wrong! I own a Integra manual and the valves are recommended adjustment every 60k miles.

that and the pin/lever thing that engages the vtec usually breaks by about 15K and is stuck on or off.

I don't know what you are referring to, but I never had any problems with my motor in the 25k I drove it.

really you can't feel the ____ anyways,

I can tell you've been in a Honda with sohc vtec and NEVER dohc vtec. When my civic hatch (GSR motor) hit 4,600 vtec kicked in. Not only could you hear when it came on, but you also felt the power as it pulled all the way up to 8,000 :!:

I love DOHC vtec motors (preferbly b18's). The power is unbeliveable for a 4 cylinder.

Snoodge
10-25-2004, 08:21 AM
Although Vtec does pull harder when lift is engaged than vvtl-i. But most of the people I know that use forced induction tend to think Valve lift is pointless cuz it seems to cause a lot of problems with higher Psi.

Im pushing 12lbs on a built block (b16a2) and vtec is my friend... can you explain why FI people are running b20 vtec hybrids over b20 blocks with stock b20 head? not saying either is better. Do you run FI yourself? or this is a my friend said this thing?

the sooner you realize that 1% or less of the people that browse/post on these boards have any technical automotive knowledge the better off you'll be. Thats why the "Power Hungry" section is 99% discussion and hardly any content. Your surrounded by people arguing over how best to tune a 108hp 1.5L engine that was built for fuel economy.

I built and drove a 99' Integra GSR with a Jackson Racing supercharger running 9psi with only an AFC and a dyno tune and never had any trouble up until 60k miles when I ended up selling the car. The original V-Tec system was visionary and every other auto maker has followed in Honda's footsteps, not the other way around.

ghaly
10-30-2004, 07:30 AM
The VVT-i is similar to Honda's VTEC technology, but taken a step further. Not only is the engine capable of enhancing valve lift, but it is also capable of optimizing cam timing (variable cam timing), which in turn translates to optimal low-end and top-end performance.

At low rpms, cam timing is advanced, while at high rpms, it is retarded. So all you Honda fools out there sporting DOHC VTEC power should be afraid, because the VVT-i technology is no joke. :twisted: :twisted: :twisted:

mgithens
10-30-2004, 03:50 PM
The VVT-i is similar to Honda's VTEC technology, but taken a step further. Not only is the engine capable of enhancing valve lift, but it is also capable of optimizing cam timing (variable cam timing), which in turn translates to optimal low-end and top-end performance.

At low rpms, cam timing is advanced, while at high rpms, it is retarded. So all you Honda fools out there sporting DOHC VTEC power should be afraid, because the VVT-i technology is no joke. :twisted: :twisted: :twisted:

sorry, you got it backwards, to get more top end the cam lobes timing is advanced, this is basic engine design... it is a matter of air flow resistance, you need the peak opening to be sooner in the stroke so that at peak negative pressure the most air can flow...

Tcguy
10-31-2004, 03:33 PM
Although Vtec does pull harder when lift is engaged than vvtl-i. But most of the people I know that use forced induction tend to think Valve lift is pointless cuz it seems to cause a lot of problems with higher Psi.

Im pushing 12lbs on a built block (b16a2) and vtec is my friend... can you explain why FI people are running b20 vtec hybrids over b20 blocks with stock b20 head? not saying either is better. Do you run FI yourself? or this is a my friend said this thing?

I was boosted on my VTEC motor before my scion too. VTEC is great for moderate boost. VTEC adjustments allow you to smoothe out the torque curve for a more predictable setup. High psi/hp situations though... Most switch to VTEC eliminator cams to rid themselves of VTEC. Also, whoever said that VTEC "breaks" at 15k miles is an idiot. My Civic had 44k miles on it, half of that being boosted. I raced it at the track EVERY week with a stock motor, and it never "broke" on me. I sold the car with working VTEC as well. Trust me, on a VTEC car, you'll know if it's not working right. The low cams just suck on the top end.

Mistertwo
10-31-2004, 07:15 PM
FYI, there are also different types of i-VTEC. It works differently in the K20A2/K20A/K20Z (RSX Type S and R) than it does in the K20A3/K24's (EP3 Civic Si, Element, etc.).

By the way, Valvetronic owns all.

Lip
11-04-2004, 08:02 PM
i don't know about that. not many people out there can say they ran 14:1 compression on a B18c motor reliably...i can. last dyno before i sold it was 246whp with 165torque Normally Aspirated

btw...i've really laughed reading this thread.

fyi...its variable Valve Timing w/ Electronic lift Control.

flat__tires
11-08-2004, 09:48 PM
you know... this is the second topic i've found bashing on other vehicles and glorifying scions... i thought there was another forum for this kind of sh*t. lets get some things straight first... when was vvt-i or vvtl-i first out on a toyota vehicle? when was the vtec or i-vtec first out on a honda vehicle? 1.5L vvt-i=103hp? 1.6L vtec=160hp? hmm... vvt-i=new technology? vtec=old technology? if honda has been able to produce such highly coveted motors using old technology... why is toyota isn't able to do the same with new technology? just my $0.02

TrafficinLA
11-08-2004, 10:28 PM
VTEC changes the point where the valve begins to open and how much lift the valve will receive - so at a specific rpm the engine jumps to a totally different cam lobe and performance is completely different...

VVT changes the point where the valve begins to open, but the lift remains the same... the difference is that over the rpm range the valves open sooner as the revs climb...

these provide two very different engines... I prefer the latter, because the VTEC requires the driver to maintain the upper rpm to get a sporting engine, whereas the VVT allows for a smoother delivery of power.

Yup, mgithens is right. Having VTEC/iVTEC in an engine is like having two engines. One cam profile for regular driving and one cam profile for performance driving. the iVTEC also allow the engine to have similar characteristics as VVTi.

VVTi is as mgithens described above. Toyota applies this in the mid-range rpms for daily driving. VTEC has the advantage over VVTi at high RPMs but VVTi is better at mid-range.

hahaitzskippy
11-08-2004, 10:50 PM
VTEC or VVTI


isnt that the topic. not WHICH ONE IS BETTER?

where has this thread gone too...

mgithens
11-08-2004, 11:34 PM
you know... this is the second topic i've found bashing on other vehicles and glorifying scions... i thought there was another forum for this kind of sh*t. lets get some things straight first... when was vvt-i or vvtl-i first out on a toyota vehicle? when was the vtec or i-vtec first out on a honda vehicle? 1.5L vvt-i=103hp? 1.6L vtec=160hp? hmm... vvt-i=new technology? vtec=old technology? if honda has been able to produce such highly coveted motors using old technology... why is toyota isn't able to do the same with new technology? just my $0.02

but honda was building a perfomance minded engine for the Civic... the 1.5L Toyota block is from the Prius 2nd Gen cars... this is why we get 30+mpg... if they wanted to dial in more horsepower they could, but their design goals were different... we are progressing step by step towards higher efficiency, high horsepower engines... my 325i made almost 190hp and got 30mph on the highway... 190hp was totally possible 50 years ago, but mileage would have been in the low teens and maybe as low as the single digits... this doesn't even begin to discuss emissions...

so yes, your example of a Honda engine making more power per liter is proof that VTEC can make decent power... but you fail to recognize that the VVT setup in the xB is proof that you can have GREAT economy...

your example also compares a $20k car vx the $13k and $14k Scions... sure more money can make more power, but that has to be the goal...

flat__tires
11-09-2004, 05:23 AM
so yes, your example of a Honda engine making more power per liter is proof that VTEC can make decent power... but you fail to recognize that the VVT setup in the xB is proof that you can have GREAT economy...

your example also compares a $20k car vx the $13k and $14k Scions... sure more money can make more power, but that has to be the goal...

i guess i forgot to mention that the FE engines of toyota (1nz-fe, 2nz-fe) were the economical engine line of toyota... but that doesn't mean that the civic or integra motors weren't economical as well. so maybe dollar for dollar the scion would be the better value... but getting back to the subject.... speaking of which... what was the question again..?

BLADDER_MASTER
11-09-2004, 08:15 PM
VVT-i has been used for performance engines. It's just that those engines were never brought over here. Toyota was able to bring out some high HP engines using VVT-i on the 4A-GE and the 3S-GE engines. Toyota even went a step further and made a Dual VVT-i 3S-GE.

mgithens
11-09-2004, 11:35 PM
I guess it would be nice if Toyota would make a MR2000 or something to compete with the S2000... and I do mean for the USA...

BLADDER_MASTER
11-09-2004, 11:55 PM
I guess it would be nice if Toyota would make a MR2000 or something to compete with the S2000... and I do mean for the USA...

All Toyota would need to do to compete with the S2000 is drop the 2ZZ-GE onto the MR-S and fix the suspension to accomodate the added power. In other words, what Lotus did to the Elise.

KevinxB
11-10-2004, 01:19 AM
"so roll the eyes"--what are you going to do next man, "show me the hand because the face don't understand"?

http://www.fadzter.com/smilies/roflol.gif

Kong
11-10-2004, 12:35 PM
I did a search to compare the performance between vtec and vvt-i. Between Honda Jazz vtec and scion xB vvt-i. Both have 1.5 liter engine


Let the numbers speak for themselves...

Scion xB Jazz
DOHC 4 cylinders, VVT-i 16 valve SOHC, 4 cylinders, 16 valve VTEC
Displacement 1496cc 1497cc
Horsepower 108hp @ 6,000 rpm 108.6 @5,800
Torque 105 lb-ft @ 4200 rpm 105.5 lb-ft @ 4800 rpm

Although it is not an identical comparison, it give you some idea. If honda make a DOHC 1.5L engine, it should gives a better comparison.

IMO, VVT-i gives a better low-rev performance -> better fuel economy. VTEC gives a better high-end performance -> not for a regular driver like me. Also a car with VTEC engine is more expensive. Moreover, VTEC engine has more electronic/mechanic adjustments, it has a lower long-term reliability than the VVT-i's. So, it's not worth an inverstmet $$$$ for me, I prefer VVT-i :) .

BLADDER_MASTER
11-10-2004, 07:14 PM
I did a search to compare the performance between vtec and vvt-i. Between Honda Jazz vtec and scion xB vvt-i. Both have 1.5 liter engine


Let the numbers speak for themselves...

Scion xB Jazz
DOHC 4 cylinders, VVT-i 16 valve SOHC, 4 cylinders, 16 valve VTEC
Displacement 1496cc 1497cc
Horsepower 108hp @ 6,000 rpm 108.6 @5,800
Torque 105 lb-ft @ 4200 rpm 105.5 lb-ft @ 4800 rpm

Although it is not an identical comparison, it give you some idea. If honda make a DOHC 1.5L engine, it should gives a better comparison.

IMO, VVT-i gives a better low-rev performance -> better fuel economy. VTEC gives a better high-end performance -> not for a regular driver like me. Also a car with VTEC engine is more expensive. Moreover, VTEC engine has more electronic/mechanic adjustments, it has a lower long-term reliability than the VVT-i's. So, it's not worth an inverstmet $$$$ for me, I prefer VVT-i :) .

Your opinion seems biased.

Mistertwo
11-11-2004, 04:08 AM
I have several friends who have owned Hondas w/ VTEC for several years and most (if not all) haven't had any issues w/ the VTEC system. Once again VTEC and VVT-i do two different things and have different purposes. There's no point in comparing the two.

BLADDER_MASTER
11-11-2004, 06:24 AM
I have several friends who have owned Hondas w/ VTEC for several years and most (if not all) haven't had any issues w/ the VTEC system. Once again VTEC and VVT-i do two different things and have different purposes. There's no point in comparing the two.

Thank you.

Kong
11-11-2004, 12:42 PM
BLADDER_MASTER, I'm pretty sure that Honda does a good job putting the engine together. Although vtec engine has more parameter to adjust, the engine is built to last longer than the car itself, if you maintain it well. Reliability problem may come 8-10 years later and by that time, something else may goes wrong.

The vtec engine has a good top-end performance, regular driver will not see it's benefit as much as the racer do. Toyota does a better job keeping the engine cost low while having good performance, for regular driver. If you are going mod your car anyway and don't concern about the cost, none of this will matter much since both vtec and vvt-i are good engine. In this case, I will go with VTEC. Anyway, you buy whatever car you that suit you. Hope this help ;)

BLADDER_MASTER
11-12-2004, 12:32 AM
BLADDER_MASTER, I'm pretty sure that Honda does a good job putting the engine together. Although vtec engine has more parameter to adjust, the engine is built to last longer than the car itself, if you maintain it well. Reliability problem may come 8-10 years later and by that time, something else may goes wrong.

I know, I wasn't bashing V-TEC engines reliability. The other d00d was.

ddriggers2
11-13-2004, 08:43 PM
I absolutely LOVE Toyotas, but anyone on here who says that VTEC sucks or doesn't work, has obviously not gotten to drive an S2000. Once 6500rpms hits in that thing, hold on to the seat of your pants.

mgithens
11-14-2004, 01:52 PM
I absolutely LOVE Toyotas, but anyone on here who says that VTEC sucks or doesn't work, has obviously not gotten to drive an S2000. Once 6500rpms hits in that thing, hold on to the seat of your pants.

it is more like 4750rpm... that's when the "kick butt" mode sets in...

Lip
11-14-2004, 03:11 PM
http://www.we-todd-did-racing.com/wetoddimage.wtdr/wNTA0MTI0NnM0MTNkZmQzMXk1NDE=

i sold this 97 itr some months back. 207whp NA.

btw..save as

sublime
11-17-2004, 07:19 PM
VVTL-i is found in my 2ZZ-GE motor in my Celica and it is far more refined then V-TEC found in different honda motors like the B16A2, B18B, B18C1 or B18C5...

im gonna miss "Lift" at 6000 rpm's when i get my tC

*cough* B18B is non-vtec *cough*

English
11-17-2004, 10:43 PM
In a small sports car like the Scion I wish they had something like vtec. It just seems that Honda has better engineering...for all you naysayers out there who're gonna try to shoot me down- think about this. Why is it that a 1.8 liter Honda engine w/vtec (B18C) has the same horsepower as a 2.4 liter Toyota engine with vvt-i? ____, even a civic si w/a 1.6 has the same horsepower! A tC can only just beat a stock Si and it has a much bigger engine, not to say I don' t like Toyota, since I just got a tC, but they just need to step up their engineering game! ...or stop putting sedan engines into sport coupes!

mgithens
11-17-2004, 11:15 PM
In a small sports car like the Scion I wish they had something like vtec. It just seems that Honda has better engineering...for all you naysayers out there who're gonna try to shoot me down- think about this. Why is it that a 1.8 liter Honda engine w/vtec (B18C) has the same horsepower as a 2.4 liter Toyota engine with vvt-i? ____, even a civic si w/a 1.6 has the same horsepower! A tC can only just beat a stock Si and it has a much bigger engine, not to say I don' t like Toyota, since I just got a tC, but they just need to step up their engineering game! ...or stop putting sedan engines into sport coupes!

well the simple answer is torque... the 2.0 liter Honda S2000 has ONLY 50% more tourque than my xB... you can't get torque without boost or cubic inches... (fuel limitations) horsepower is the product of torque at a specific RPM, so to get high horsepower numbers on a honda they do it by using the high rpms...

the more complex answer is longevity... Toyota has established a reputation for 300,000 mile cars... Honda is more performance oriented... lower compression, larger displacement engines have a habit of lasting longer... VW engines 6.7 to 7.0 compression... super cheap... Honda builds the S2000 that #1 is 12:1 compression and #2 has VTEC, which encourages to the driver to "drive it like it was stolen" in order to enjoy that peformance...

so it doesn't come down to fairy dust or technological skill - it is about choice...

hahaitzskippy
11-18-2004, 12:42 AM
VVTL-i is found in my 2ZZ-GE motor in my Celica and it is far more refined then V-TEC found in different honda motors like the B16A2, B18B, B18C1 or B18C5...

im gonna miss "Lift" at 6000 rpm's when i get my tC

*cough* B18B is non-vtec *cough*

LS VTEC does heheh

but anyways. i like VTEC and VVT just the same :D

BLADDER_MASTER
11-19-2004, 08:11 AM
In a small sports car like the Scion I wish they had something like vtec. It just seems that Honda has better engineering...for all you naysayers out there who're gonna try to shoot me down- think about this. Why is it that a 1.8 liter Honda engine w/vtec (B18C) has the same horsepower as a 2.4 liter Toyota engine with vvt-i? ____, even a civic si w/a 1.6 has the same horsepower! A tC can only just beat a stock Si and it has a much bigger engine, not to say I don' t like Toyota, since I just got a tC, but they just need to step up their engineering game! ...or stop putting sedan engines into sport coupes!

So far Scion don't have a sports car. And if you want a Toyota engine like V-TEC, look into the 2ZZ-GE, 4A-GE, or the 3S-GE.

sublime
11-19-2004, 08:51 AM
In a small sports car like the Scion I wish they had something like vtec. It just seems that Honda has better engineering...for all you naysayers out there who're gonna try to shoot me down- think about this. Why is it that a 1.8 liter Honda engine w/vtec (B18C) has the same horsepower as a 2.4 liter Toyota engine with vvt-i? ____, even a civic si w/a 1.6 has the same horsepower! A tC can only just beat a stock Si and it has a much bigger engine, not to say I don' t like Toyota, since I just got a tC, but they just need to step up their engineering game! ...or stop putting sedan engines into sport coupes!

The torque on the B-series engines ins't even close to that of the 2.4 in the tC. The only way to get decent torque numbers is through proper gearing, displacement or FI. The B-series has niether.