What Fellas Have Against Hondas?

[damien]

sorry scientist should have said first in JAPANESE engines. Cus that is what we comparin here almost all the time...cars from JAPAN.

[Anonymous]

Sorry i appologize...honda did beat BMW...Alfa was first...and Nissan beat honda to the punch

was the first auto manufacturer to patent a functional variable valve timing system which included variable lift. Developed by Giovanni Torazza in the late 1960s, the system used hydraulic pressure to vary the fulcrum of the cam followers (US Patent 3,641,988). The hydraulic pressure changed according to engine speed and intake pressure. The typical opening variation was 37%.

In September 1975, General Motors patented a system intended to vary valve lift. 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.

Alfa Romeo was the first manufacturer to use a variable valve timing system in production cars (US Patent 4,231,330). The 1980 Alfa Romeo Spider 2.0 L had a mechanical VVT system in Spica fuel injected cars sold in the USA. Later this was also used in the 1983 Alfetta 2.0 Quadrifoglio Oro models as well as other cars.

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 (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, this was the first production car to use electronically controlled VVT technology.

The next 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 is a high lift, long duration profile and comes into operation at high engine speeds to provide an 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 powered by the C30A 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 1991, Clemson University researchers patented the Clemson Camshaft which was designed to provide continuously variable valve timing independently for both the intake and exhaust valves on a single camshaft assembly. This ability makes it suitable for both pushrod and overhead cam engine applications.[1]

In 1992 BMW introduced the VANOS system. Like the Nissan NVCS system it could provide timing variation for the intake cam in steps (or phases), the VANOS system differed in that it could provide one additional step for a total of three. Then in 1998 the Double Vanos system was introduced which significantly enhances emission management, increases output and torque, and offers better idling quality and fuel economy. Double Vanos was the first system which could provide electronically controlled, continuous timing variation for both the intake and exhaust valves. In 2001 BMW introduced the Valvetronic system. The Valvetronic system is unique in that it can continuously vary intake valve lift, in addition to timing for both the intake and exhaust valves. The precise control the system has over the intake valves allows for the intake charge to be controlled entirely by the intake valves, eliminating the need for a throttle valve and greatly reducing pumping loss. The reduction of pumping loss accounts for a 10% increase in power output and fuel economy.

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.

In 2005 General Motors offered the first Variable Valve timing system for I-head V6 engines, LZE and LZ4.

In 2007 Daimler Chrysler became the first manufacturer to produce a cam-in-block engine with independent control of exhaust cam timing relative to the intake. The 2008 Dodge Viper uses Mechadyne's concentric camshaft assembly to help boost power output to 600 Bhp.

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

[skidmarx]

The main issue stem from people making uninformed comments... You don't know what you talking about so the best thing to do is sit back or go to wikipedia and look up vtec or variable valve systems etc and learn something then comment. I am not likin the level of ignorant talk on here.. Step it up!

here is what i said

my padna had a honda vigor, and his rave wasnt about top speed, he raved about the amount of fun the car is when it comes to handling, braking, difficult maneuvers and excellent fuel economy, and it wasnt vtec. anyway, his raving was well worth it because everything was true. preffered the vigor and the legend to the vtec toys. so if it have anything i aint like about honda is not honda itself, but the rave bout vtec, when there are hondas without vtec out there doing better.

notice i wasnt hating honda, i just didnt get why people rave bout vtec, i never said the mechanism was trash. dont be quick to take offense man, teach us something instead of lashing at people who cyah get a clear answer from vtec fans.

[skidmarx]

hey check this out, i post up what i like very much some time ago. the JZX90 Mark II and how many people liked it? maybe one or two, everyone else sat back and ignored the thread, i aint dis people for not liking what i liked, i like what i like and the fact that other members aint like what i like dont make me like it less, so if there are honda haters here, then why cant honda fans stomach the fact that not everyone likes honda and not everyone could get a clear feedback from the same honda lovers on what vtec is. and telling people go to wikipedia aint what the message board is for, its for the self willed ones who have enough interest in doing deep research to share something with others who basically asking for a laymans terms explanation.

[SF5]

The main issue stem from people making uninformed comments... You don't know what you talking about so the best thing to do is sit back or go to wikipedia and look up vtec or variable valve systems etc and learn something then comment. I am not likin the level of ignorant talk on here.. Step it up!

here is what i said

my padna had a honda vigor, and his rave wasnt about top speed, he raved about the amount of fun the car is when it comes to handling, braking, difficult maneuvers and excellent fuel economy, and it wasnt vtec. anyway, his raving was well worth it because everything was true. preffered the vigor and the legend to the vtec toys. so if it have anything i aint like about honda is not honda itself, but the rave bout vtec, when there are hondas without vtec out there doing better.

notice i wasnt hating honda, i just didnt get why people rave bout vtec, i never said the mechanism was trash. dont be quick to take offense man, teach us something instead of lashing at people who cyah get a clear answer from vtec fans.

Once again you cannot say better, if the non Vtec variant were better then don't you think they would have been used more frequently by tuners? I think relatively well would have been a better choice of word.
Not being a smartass just an observation

[skidmarx]

well i meant to compare the non vtec cars like the vigor of 93 i think to them vtec cars of the same year. like the teg and the civic. and i experienced the vigor and the legend tearing them apart. thats where my comment come from. not that the vtec aint working. just that the way people express their faith in vtec gives me the impression that these other non vtec hondas arent half as worthy.

[kobi]

Skid....look at your post. u said u doh see the rav behind vtec when some non vtec doing better. Better in what way. can a non vtec 1600 or 1800 beat a 1600 or 1800 vtec stock. and u called vtec toys. can u take that so called vigor if non vtec and beat even a 1800 vtec.?? NO.NO>NO. u hate hondas so much u convincing yourself to state nonsense. mont be so obvious man

[EVO2ENVY]

well i meant to compare the non vtec cars like the vigor of 93 i think to them vtec cars of the same year. like the teg and the civic. and i experienced the vigor and the legend tearing them apart. thats where my comment come from. not that the vtec aint working. just that the way people express their faith in vtec gives me the impression that these other non vtec hondas arent half as worthy.

Aren't you comparing 6cyl cars to 4cyl cars? Geez I wonder which would win...........................

[SF5]

WikiPedia to the resue!!!!!!!!!!!!!!!!
Nice work SCi lead by example

[skidmarx]

Skid....look at your post. u said u doh see the rav behind vtec when some non vtec doing better. Better in what way. can a non vtec 1600 or 1800 beat a 1600 or 1800 vtec stock. and u called vtec toys. can u take that so called vigor if non vtec and beat even a 1800 vtec.?? NO.NO>NO. u hate hondas so much u convincing yourself to state nonsense. mont be so obvious man

a hater dosent ask questions dude, i wanted to find out why it was so hyped and someone already told me why.you, a honda fan couldnt even clarify that for me because you too busy looking for a way to embarrass me for asking a question. as for hating honda, thats in your mind, because i aint rave bout honda or share your sentiment dont mean i hate honda. i never express that on the board. man is it that hard to get a lil explanation around here without being accused? give that a rest man kobi, it tired now seriously. moving on.....