vtec was invented by dodge

[Turbo Dave]

at least thats whats some arab kid told me today... im to tired to research it but he said honda bought it from them in the late 80's or early 90's.... is this true??? and if so, im about to sell the h22 and get an srt4.... (no not reallY)

[palinix]

This is blasphemy.

Honda pioneered the VTEC system.... others then followed.

[91CBoy]

Thats fuckin bullshit!! Honda invented it, then Toyota stated using VVt-I and VVt. And others followed.

[Turbo Dave]

BMW is the initiator for VANOS, which Honda and Toyota developed their VTEC and VVT from.
VTEC (standing for Variable valve Timing and lift Electronic Control) is a system developed by Honda to improve the combustion efficiency of its internal combustion engines throughout the RPM range. This was the first system of its kind and eventually led to different types of variable valve timing and lift control systems that were later designed by other manufacturers (VVT-i from Toyota, VANOS from BMW, and so on). It was invented by Honda's chief engine designer Kenichi Nagahiro.

http://en.wikipedia.org/wiki/VTEC

[Turbo Dave]

i guess not, stupid kid. i raced his 300zx today too. we were dead even....












Till VTEC kicked in

[ACC0RD22]

BMW is the initiator for VANOS, which Honda and Toyota developed their VTEC and VVT from.
VTEC (standing for Variable valve Timing and lift Electronic Control) is a system developed by Honda to improve the combustion efficiency of its internal combustion engines throughout the RPM range. This was the first system of its kind and eventually led to different types of variable valve timing and lift control systems that were later designed by other manufacturers (VVT-i from Toyota, VANOS from BMW, and so on). It was invented by Honda's chief engine designer Kenichi Nagahiro.

http://en.wikipedia.org/wiki/VTEC

I have no idea where you read that, but this is from the top of the page.

VTEC (standing for Variable valve Timing and lift Electronic Control) is a system developed by Honda to improve the combustion efficiency of its internal combustion engines throughout the RPM range. This was the first system of its kind and eventually led to different types of variable valve timing and lift control systems that were later designed by other manufacturers (VVTL-i from Toyota, VarioCam Plus from Porsche, and so on). It was invented by Honda's chief engine designer Kenichi Nagahiro.

[GHOST 2.2]

if you ask a bunch of nissan junkies they say that nissan did the blue print of vtec and honda was just the first to make it commerical.

[ACC0RD22]

if you ask a bunch of nissan junkies they say that nissan did the blue print of vtec and honda was just the first to make it commerical.

first one to make it commercial is always the first one to get credit.

[NAiL05]

Well VTEC was applied in Honda motorcycles then it eventually started moving into the automobiles.

[amd3dnow3]

This is blasphemy.

Honda pioneered the VTEC system.... others then followed.

LMFAOL this guy got me rolling on the floor, the last time i herd that word was in church, lol

everywere i see looks like honda invented VTEC
i mean ppl is normal EVERYONE HATES HONDA is that simple, let them hate
HUNDa is the sh1tzz

[ant96gle]

Here is your answer taken from here http://www.answers.com/topic/variable-valve-timing
So to answer your question, it was GM. First manufacturer to produce it was Fiat and the first manufacturer to produce it large scale was Nissan.

History

General Motors patented the first variable valve timing and lift or smart valve system in September of 1975. GM was interested in throttling the intake valves in order to reduce emissions. This was done by minimizing the amount of lift at low load to keep the intake velocity higher, thereby atomizing the intake charge. GM encountered problems running at very low lift, and abandoned the project.

Fiat had employed the first functional variable valve timing system, including variable lift. Developed by Giovanni Torazza in the 1970s, the system used hydraulic pressure to vary the fulcrum of the cam followers. The hydraulic pressure changed according to engine speed and intake pressure. The typical opening variation was 37%.

Alfa Romeo was the first manufacturer who used variable valve timing system in production cars. Model year 1980 Alfa Romeo Spider 2.0 L had VVT in Spica fuel injected cars in USA. Later this was used also 1983 Alfetta 2.0 Quadrifoglio Oro models and other cars as well.

In 1986 Nissan developed their own form of VVT with the VG30DE{TT) engine for their Mid-4 Concept. Nissan chose to focus their NVCS(Or Nissan Valve-Timing Control System) mainly at low and medium speed torque production because the vast majority of the time, engine RPMs will not be at extremely high speeds. The NVCS system can produce both a smooth idle, and high amounts of low and medium speed torque. Although it can help a little at the top-end also, the main focus of the system is low and medium range torque production. The VG30DE engine was first used in the 300ZX (Z31) 300ZR model in 1987, being the first production car to use VVT technology.

The next big step was taken in 1989 by Honda with the VTEC system. Honda had started production of a system that gives an engine the ability to operate on two completely different cam profiles, eliminating a major compromise in engine design. One profile designed to operate the valves at low engine speeds provides good road manners, low fuel consumption and low emissions output. The second profile is comparable to the profile of a race cam and comes into operation at high engine speeds to provide a large increase in power output. The VTEC system was also further developed to provide other functions in engines designed primarily for low fuel consumption. The first VTEC engine Honda produced was the B16A which was installed in the Integra/CRX/Civic Hatchback available in Japan and Europe. In 1991 the Acura/Honda NSX became the first VTEC equipped vehicle available in the US. VTEC can be considered the first "cam switching" system and is also one of only a few currently in production.

In another development in 1991, Clemson University researchers had developed and patented the Clemson Camshaft which improved fuel economy. [1] The Clemson Camshaft system provided a continuously variable system. One cam shaft rotates inside the other creating infinitely more settings. Similarly, General Motors, the maker of Cadillac employed an advanced technology to develop a continuously variable system for the Cadillac Northstar System, VVT (Variable Valve Timing). The NorthStar VVT provides continuously variable system throughout the RPM range. The overhead cam (OHC) Cadillac NorthStar, already a fuel efficient V-8 engine, became even more efficient with VVT. GM engines use the double overhead cam varying both intake and exhaust for better performance. In 2005, General Motors offered the first Variable Valve timing system for overhead valve V6 engines, LZE and LZ4.

In 1992, BMW introduced VANOS, their version of a variable valve timing system, on the BMW M50 engine used in the 3 Series. VANOS significantly enhances emission management, increases output and torque, and offers better idling quality and fuel economy. The latest version of VANOS is double-VANOS, used in the new M3. Double-VANOS adds an adjustment of the intake and exhaust camshafts.

Ford became the first manufacturer to use variable valve timing in a pickup-truck, with the top-selling Ford F-series in the 2004 model year. The engine used was the 5.4L 3-valve Triton.

[Turbo Dave]

wow, so iwas kind of right. thats wierd. imagine a v8 with vtec...

[LinX]

VTEC was not designed by GM. VTEC was made by HONDA and only HONDA. The technology implemented in VTEC dates back to GM but it was not called VTEC.

[Turbo Dave]

true... but variable valve timing is vtec and vvt was invented by gm, vtec is obviously the pioneer in vvt but i dont care who invtented it, it kicks ass!

[ACCORDianate]

ant96gle, nice find. I feel informed. Thank you.