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What year did Honda first introduce the VTEC engine?

My 90 Prelude SI has elements of the variable valve-timing, I think. No pretty VTEC sticker, though...
 
Actually, the NSX was not the first to have a VTEC engine in it. The first engine to hit mainstream Hondas w/ VTEC was the B16A, a 1595cc inline-4 16Valve DOHC engine, first appearing in 1989 in the Honda Integra XSi and RSi
 
Heh, Road & Track made the same mistake in their latest issue, saying the NSX was the first car with VTEC.
 
i dunno much about vtech- but i remember going to a honda retailer and only seeing it in the coupe model of the accord.
that was a while ago though- pretty sure they would have the v-tech in other cars as well.
 
in 93 accords and civics...only the EX models have it. there may be other models that have it but i'm sure about the ex having them and not the LX or dx. i know nothing about the coupes, etc.
 
i have a 93 accord SE and i have friends who have 93 civics ex and accords ex and weird how none of it has the VTEC logo on it. are u sure?
 
it doesn't need the silly logo on it to make it a vtec. do you put a "4 cylinder" logo on your car? i don't know if they labeled it on the engine or not. pop open the hood and take a look. maye someone else has a definitive answer.
 
any civic ex from 93 and newer has a vtec engine, tuned for 125 hp, at least up until the most recent remake, when i think it gets 130hp, but not sure on that one. on the civics as well, all the si versions of a civic, including the del sol and the hatchback have all had vtec as well. all accord ex's, or se's from 93 forward have vtec as well. the newest accord, all the 4 cyl models are vtec, for 145hp last i checked. there does not need to be a vtec sticker on the car to make it a vtec, the only car that really has a vtec sticker on it is the prelude.
so, no, a car does not need to have a vtec sticker to have vtec.
 
Not on the car's exterior, but every engine I've seen with VTEC has "VTEC" etched on the engine somewhere, usually on the valve cover.
 
afaik, no system is significantly superior to another, they all accomplish the same function, giving the engine two different, or infinitely variable cam profiles.

and if toyota's is better, it should be, it only took them 10 years to figure it out once honda had been doing it🙂
 
remember there are 2 types of VTEC- the VTEC-economy that reside in Civics and Accords that primarily serve for a better fuel economy and possibly a wider torque band(just a guess?) compared to the VTEC Honda puts into the Type-Rs, Si, NSX and others that push for maximum hp without sacrificing total low end.

And i belive Honda VTEC system modifies both intake and exhaust, while most other variable systems only modify intake flow, but again I could be blowing smoke up my ass.

One other thing- does the NSX have a 3 stage VTEC system?
 
the current nsx has a two stage system, the next gen will probably have 3 stage...damn what that will do....

anyways daw, yes, you are correct that vtec in the accords and civics for the most part does serve to make economy better, but it does assist in perforance slightly...the small 4's love to rev, and vtec takes more advantage of that. drive a civic ex or accord 4cyl and see if it doesn't seem to be peppier when u hit about 4500rpm🙂
 
I thought there were more than two. You have the ecoomy, the regular sohc, and the dohc. They had discussed creating another, but I don't remember what it was.
 


<< And i belive Honda VTEC system modifies both intake and exhaust, while most other variable systems only modify intake flow, but again I could be blowing smoke up my ass. >>



That sounds about right, dawheat. The VCT (variable camshaft timing)on the Ford 2.0L Zetec engine only adjusts the camshaft timing on the exhaust side, and only for emissions purposes. Honda uses VTEC to make powa.

IMHO, BMW's VANOS system blows Honda's VTEC out of the water. IIRC, VANOS is inifinitely adjustable, while the VTEC on Honda's only kicks in at certain RPMs. Look at the torque curve for a Civic EX and a Civic SI, they are exactly the same up until the VTEC crap kicks in.
 
Ya, I love my BMW 3.0L Inline 6 with there VANOS system. However it does cost a little bit more then a lot of Honda's VTEC engines...with the exception of the NSX anyway😛 BMW certainly proves time and time again (just check out the M5's engine and the new M3's engine) that with high quality parts and good design you don't need superchargers or turbochargers to get a crap load of horsepower. I want the M3 3.6L I-6 with its 333hp.
 
perry, i agree with the fact that VANOS blows vtec away, but when a vtec is available on a car around 15/16k, vanos is available for maybe double that price. not that i would mind either...my accord ex is just before vtec became standard on the ex🙁
 
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