i think that its a psychological thing. you go from a car with no torque to a car that has a mediocre amount of toruqe. its not that its really pulling that hard, its that its pulling really hard compaired to how it was befor.

 

I'd side with Mr. 2 on this one.

If a 2400lb cars output jumps from 110hp and 98 ft. lbs tq to 220hp and 196 ft/ lbs tq it would be quite a hit.

compared to

A 3400lb car output jumps from 215 hp and 190 ft. lbs tq to 370 hp and 324 ft. lbs. tq of course the 2400lb car would feel like it was pulling harder, eventhought the heavier car would in essence be pulling harder.

Lightweight + Vtec + turbo = pulling like a bat out of hell

heavier + I-6 + big nasty turbo = winning timeslip.

anything that affects the powercurve in the higher RPM bands is going to affect it that much more than one single thing.

Vtec = 4200 RPM
Turbo (12psi) = 4000 RPM

this will deliver the automotive equivalent of the big bang.

but

Twin Turbo (22psi) = 4000 rpm

ontop of a high output engine will still make a big change, but due to the lighterweight of car one you'll feel the same percentage power change because it's lighter and the hp per lb will probably be higher. as per the % of the increase.

wow.

okay i'm done now

(gets off of soap box)

 

but you agree with me hear, the thread was about vtec =)

 

So, umm...can I be first in line to take a spin at Gojira?

 

if it comes down...he needs to get his license back

 

i own a honda, i have a vtec, im gonna be completely honest....i get a little smirk on my face when it kicks in, but i dont go around saying i got 98 honda prelude VTEC!!!!!! and expect everyone to shit themselves and bow down to me, its just like saying yeah guys i got a honda prelude WITH INTAKE AND EXAUST!!!!! i mean yeah its there, but really, it aint gonna let me run 13's at the track now is it?..........i dont really wanna switch subjects on this thread, but did anybody hear on the news about that guy who got shot on 264 because of road rage? makes me think twice about revving at people i dont know

 

Yeah, I remember this one time i raced a honda. Were were from a roll and I had him by like 5,000 car lenghts.. untill his v-tec kicked in and he flew past me. Please!! Vtec is way over rated. It serves its purpose. Its good for lane changes on the highway but I wouldent praise it for anything more than that.

 

Honestly the ignorance of you people is astounding. But then again I really shouldn’t expect to much because based on what I’ve read around here the majority of you are dumbass high school kids who think K&N air filters and 4-inch mufflers are hard-core modifications. And the ones that aren’t seem to be 20something high school drop outs who think dating 16 year old girls and 50 Cent is cool.

The concept of changing valve lift and timing on the fly is hardly a new idea. In 1943 an American aircraft manufacture came up with the technology in an effort to give fighters an advantage.

The first production road use of the technology was in 1973 by an American truck manufacture.

Honda’s uses dates back to the 1960s and their Grand Prix motorcycles, it’s a variation on this system that found its way into Honda’s production cars and bikes of today.

VTEC is simply a way to get a very aggressive profiled cam onto the street. The 2nd grind on a VTEC cam looks like something you’d see in a Winston Cup car. The advantage VTEC gives is that you can run a mild profile for fuel economy, idle quality, or even torque while keeping the 2nd profile for upper RPM use.

Honestly VTEC gets its rep as being gutless because of Honda and the B-Series. The lack of torque in theses engines is because they are short stroked and sub 2 liter engines. That isn’t a good combo for stump pulling off the line power.

GM uses a VVT system in their new Vortec DOHC Inline 6 and it makes 80% of its torque at just 1,800rpms.

VTEC is NOT a turbo, it was never intended to be one, it was simply a way for Honda to sneak past emissions & fuel economy regulations and still deliver the HP figures it wanted to sell cars.

If you took a not VVT equipped 2 liter engine using just the secondary cam grinds it could equally the same peak hp of a VVT version of the same engine, the only difference would be the VVT would have a decent idle at the stop light.

Spyder757

 

This topic is gay! And I drive a Honda with Vtec. haha

 

Ummm the SINGLE turbo 347ci powered Mustang's of Pro 5.0 make upwards of 1,800hp and run 6.7s @ 208mph.

That's just a LITTLE bit more impressive than cars that can't even break into the 170mph range in the 1/4 mile.

Spyder757