Is VTEC all Hype?
When Honda designed the VTEC system all they had in mind was to rid the automobile industry of the infamous compromise engines were built with. You see, without VTEC, cars either had to be tuned for high rpm efficiency or low rpm efficieny. You could not have the best of both worlds without the Variable Valve Timing and Lift Electronic Control. (VTEC sounded much better than VVTLEC.)
Now with this design, we had great fuel economy and low end grunt. I wouldn't dare say it's that spectacular on our 1.8 Liter four banger, but it was often better than cars that wasn't equipped with it. As VTEC engages the larger lobes on the camshaft, it allowed the engine to breathe more at higher rpms, thus giving it power at stratospheric rpms.
Now my question is this. Is it all that spectacular? On race engines there would be no need to have VTEC. It would just be more parts to break. No solenoid, lighter camshaft and lighter valvetrain meant less stress and freer revs. On the street, you know what the answer is.
So what do you think about VTEC and what has it done for you lately?
Thank You,
Johnny Knoxville
The n00b.
Brought to you by the anti-VTEC association. This is ITR related because I own one and want to gauge ITR owner's opinion.
Since I can't post, Damn ITR ****'s need to stop whorring my thread!
Modified by Johnny Knoxville at 1:52 PM 6/28/2003
Now with this design, we had great fuel economy and low end grunt. I wouldn't dare say it's that spectacular on our 1.8 Liter four banger, but it was often better than cars that wasn't equipped with it. As VTEC engages the larger lobes on the camshaft, it allowed the engine to breathe more at higher rpms, thus giving it power at stratospheric rpms.
Now my question is this. Is it all that spectacular? On race engines there would be no need to have VTEC. It would just be more parts to break. No solenoid, lighter camshaft and lighter valvetrain meant less stress and freer revs. On the street, you know what the answer is.
So what do you think about VTEC and what has it done for you lately?
Thank You,
Johnny Knoxville
The n00b.
Brought to you by the anti-VTEC association. This is ITR related because I own one and want to gauge ITR owner's opinion.
Since I can't post, Damn ITR ****'s need to stop whorring my thread!
Modified by Johnny Knoxville at 1:52 PM 6/28/2003
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Johnny Knoxville »</TD></TR><TR><TD CLASS="quote">When Honda designed the VTEC system all they had in mind was to rid the automobile industry of the infamous compromise engines were built with. You see, without VTEC, cars either had to be tuned for high rpm efficiency or low rpm efficieny. You could not have the best of both worlds without the Variable Valve Timing and Lift Electronic Control. (VTEC sounded much better than VVTLEC.)
Now with this design, we had great fuel economy and low end grunt. I wouldn't dare say it's that spectacular on our 1.8 Liter four banger, but it was often better than cars that wasn't equipped with it. As VTEC engages the larger lobes on the camshaft, it allowed the engine to breathe more at higher rpms, thus giving it power at stratospheric rpms.
Now my question is this. Is it all that spectacular? On race engines there would be no need to have VTEC. It would just be more parts to break. No solenoid, lighter camshaft and lighter valvetrain meant less stress and freer revs. On the street, you know what the answer is.
So what do you think about VTEC and what has it done for you lately?
Thank You,
Johnny Knoxville
The n00b.
Brought to you by the anti-VTEC association. This is ITR related because I own one and want to gauge ITR owner's opinion.</TD></TR></TABLE>
You have already answered your own question. On the street you need it and on the track you don't, that's why the make Toda spec C's
Now with this design, we had great fuel economy and low end grunt. I wouldn't dare say it's that spectacular on our 1.8 Liter four banger, but it was often better than cars that wasn't equipped with it. As VTEC engages the larger lobes on the camshaft, it allowed the engine to breathe more at higher rpms, thus giving it power at stratospheric rpms.
Now my question is this. Is it all that spectacular? On race engines there would be no need to have VTEC. It would just be more parts to break. No solenoid, lighter camshaft and lighter valvetrain meant less stress and freer revs. On the street, you know what the answer is.
So what do you think about VTEC and what has it done for you lately?
Thank You,
Johnny Knoxville
The n00b.
Brought to you by the anti-VTEC association. This is ITR related because I own one and want to gauge ITR owner's opinion.</TD></TR></TABLE>
You have already answered your own question. On the street you need it and on the track you don't, that's why the make Toda spec C's
On the street, a VTEC equipped engine will more than likely have better gas mileage. I wouldn't say that an engine without VTEC could not challenge a VTEC equipped engine in gas mileage. We've all seen that even with Toda VTEC killers, they can be tuned for fuel economy at the expense of power of course. Now the big question is, how much torque is enough for low end daily driven grunt? I often find myself driving past 4,000RPMs just to keep up with some of the monsterous SUVs on the street at stoplight traffic.
HTH Johnny, welcome to the board.
len
HTH Johnny, welcome to the board.
len
I know with Vtec I can smoke cars worth 2 or maybe 3 times of my Teg.
Without VTEC it'll just be a car, if you look at the variations that other manufacturers are using now like the VVTI that Toyotas are doing, I guess it's extra spice in you car without a turbo, I think when people buy cars that are not turbos they want "something" extra, I believe VTEC bridges that gap
As the late and great Bruce Lee said in the film Enter the Dragon "My style? I guess you can call it fighting without fighting"
I think Vtec is like a car version of that "Turbo without Turbo" maybe?
Without VTEC it'll just be a car, if you look at the variations that other manufacturers are using now like the VVTI that Toyotas are doing, I guess it's extra spice in you car without a turbo, I think when people buy cars that are not turbos they want "something" extra, I believe VTEC bridges that gap
As the late and great Bruce Lee said in the film Enter the Dragon "My style? I guess you can call it fighting without fighting"
I think Vtec is like a car version of that "Turbo without Turbo" maybe?
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black Sheep »</TD></TR><TR><TD CLASS="quote">I know with Vtec I can smoke cars worth 2 or maybe 3 times of my Teg.
Without VTEC it'll just be a car, if you look at the variations that other manufacturers are using now like the VVTI that Toyotas are doing, I guess it's extra spice in you car without a turbo, I think when people buy cars that are not turbos they want "something" extra, I believe VTEC bridges that gap
As the late and great Bruce Lee said in the film Enter the Dragon "My style? I guess you can call it fighting without fighting"
I think Vtec is like a car version of that "Turbo without Turbo" maybe?
</TD></TR></TABLE>
I think you are missing the whole point of VTEC entirely buddy.
Without VTEC it'll just be a car, if you look at the variations that other manufacturers are using now like the VVTI that Toyotas are doing, I guess it's extra spice in you car without a turbo, I think when people buy cars that are not turbos they want "something" extra, I believe VTEC bridges that gap
As the late and great Bruce Lee said in the film Enter the Dragon "My style? I guess you can call it fighting without fighting"
I think Vtec is like a car version of that "Turbo without Turbo" maybe?
</TD></TR></TABLE>I think you are missing the whole point of VTEC entirely buddy.
My favorite part of having VTEC is the two distinct sounds the engine makes. You've got the "Brrraaaawwwrrrr" and my personal favorite, the BWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA!!!!!!
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by io_burn »</TD></TR><TR><TD CLASS="quote">My favorite part of having VTEC is the two distinct sounds the engine makes. You've got the "Brrraaaawwwrrrr" and my personal favorite, the BWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA!!!!!!
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ROFLMAO! StunnaRIFIC y0!
</TD></TR></TABLE>ROFLMAO! StunnaRIFIC y0!
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black Sheep »</TD></TR><TR><TD CLASS="quote">I know with Vtec I can smoke cars worth 2 or maybe 3 times of my Teg.
Without VTEC it'll just be a car, if you look at the variations that other manufacturers are using now like the VVTI that Toyotas are doing, I guess it's extra spice in you car without a turbo, I think when people buy cars that are not turbos they want "something" extra, I believe VTEC bridges that gap
As the late and great Bruce Lee said in the film Enter the Dragon "My style? I guess you can call it fighting without fighting"
I think Vtec is like a car version of that "Turbo without Turbo" maybe?
</TD></TR></TABLE>
I think we have a final answer, this guy has got it.
Without VTEC it'll just be a car, if you look at the variations that other manufacturers are using now like the VVTI that Toyotas are doing, I guess it's extra spice in you car without a turbo, I think when people buy cars that are not turbos they want "something" extra, I believe VTEC bridges that gap
As the late and great Bruce Lee said in the film Enter the Dragon "My style? I guess you can call it fighting without fighting"
I think Vtec is like a car version of that "Turbo without Turbo" maybe?
</TD></TR></TABLE>I think we have a final answer, this guy has got it.
In our race series DTC VTEC is not allowed. The ITR`s are running camshafts straight without the vtec lobes.... Doesn`t make them slower.
But I like the BWAAAAAAAAAAAAAAAAAAAAAAAAAAA sound
But I like the BWAAAAAAAAAAAAAAAAAAAAAAAAAAA sound
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TypeR 01 886 »</TD></TR><TR><TD CLASS="quote">what a ****** lame/gay/n00b thread.</TD></TR></TABLE>
damn man, who got your panties in a bunch?
damn man, who got your panties in a bunch?
Judging by the reponses made in this thread, it's probably safe to say that more than 1/2 of the Honda-Tech population do not grasp the idea of VTEC. They don't understand that the VTEC B series motor does not make power by using VTEC. These motors make power with the combination of a higher flowing head and more efficient bottom end. I think a B18C5 with VTEC Killer Camshafts would perform better than any VTEC equipped motor because of the lighter valvetrain and less complicated system. There is no oil fluctuation. Simple is better and more reliable to me.
Len, who wonders why every n00b have to be treated like an assclown just because they don't have a high post count.
Sorry, it's threads like these that get torn apart be elitist ITR owners that makes me ashamed of owning one.
Len, who wonders why every n00b have to be treated like an assclown just because they don't have a high post count.
Sorry, it's threads like these that get torn apart be elitist ITR owners that makes me ashamed of owning one.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Johnny Knoxville »</TD></TR><TR><TD CLASS="quote">Now my question is this. Is it all that spectacular? On race engines there would be no need to have VTEC.</TD></TR></TABLE>
What kind of racing. Obviously theres no need in nascar because all they do is put in in high gear and take a nap. Road racing, in some turns you're not going to be at 6,000-10,000 rpm, and you'll benifit from another cam that peaks at lower rpms. Drag racing obviouly vtec is good. Cams simply move the power curve. Two cam profiles means you can have power in low rpms and high rpms.
What kind of racing. Obviously theres no need in nascar because all they do is put in in high gear and take a nap. Road racing, in some turns you're not going to be at 6,000-10,000 rpm, and you'll benifit from another cam that peaks at lower rpms. Drag racing obviouly vtec is good. Cams simply move the power curve. Two cam profiles means you can have power in low rpms and high rpms.
len, no offense, but with someone asking "is vtec all hype", what kind of answers did you expect? might as well ask 'is a type r good' or 'why is the sky blue?'
rob- once a noob, took my hits, and wonders if honda drivers could ever be called 'elitist'
rob- once a noob, took my hits, and wonders if honda drivers could ever be called 'elitist'
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jond »</TD></TR><TR><TD CLASS="quote">
What kind of racing. Obviously theres no need in nascar because all they do is put in in high gear and take a nap. Road racing, in some turns you're not going to be at 6,000-10,000 rpm, and you'll benifit from another cam that peaks at lower rpms. Drag racing obviouly vtec is good. Cams simply move the power curve. Two cam profiles means you can have power in low rpms and high rpms.
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I Don't think you know what's going on. In road racing you will be in those high rpm's, hence why people revmatch and heal toe. Driving on the track is not like driving on the street you can't putt along at 4 or 5K rpm's. Auto X i think is a different story.
Another reason for such high revs is our gearing.
What kind of racing. Obviously theres no need in nascar because all they do is put in in high gear and take a nap. Road racing, in some turns you're not going to be at 6,000-10,000 rpm, and you'll benifit from another cam that peaks at lower rpms. Drag racing obviouly vtec is good. Cams simply move the power curve. Two cam profiles means you can have power in low rpms and high rpms.
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I Don't think you know what's going on. In road racing you will be in those high rpm's, hence why people revmatch and heal toe. Driving on the track is not like driving on the street you can't putt along at 4 or 5K rpm's. Auto X i think is a different story.
Another reason for such high revs is our gearing.
Here is some information from http://www.itrsport.com:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by www.itrsport.com »</TD></TR><TR><TD CLASS="quote">
The VTEC system, first pioneered in the Acura NSX, works similar performance magic in the Integra Type R. As the performance of the NSX has already amply demonstrated, VTEC is an innovative solution to an age-old automotive engineering problem. It elegantly solves the trade-off between tuning an engine for either high-end horsepower or low-end torque. With VTEC, Acura engineers no longer have to compromise between the two. VTEC-equipped engines can have the best of both.
The VTEC system uses three cam lobes and three corresponding rocker arms for each pair of valves. The VTEC system operates on both the intake and exhaust valves. The two outer cam lobes have a profile that optimizes low-speed torque and response. The middle lobe has a high-lift, longer-duration profile that is designed to optimize high-end horsepower.
The changeover point between low lift and high lift in the Type R is 5700 rpm (compared to 4400 rpm on the GS-R), for excellent midrange torque. This makes the Type R engine responsive under all operating conditions, and especially when going from part-throttle, steady-state cruising to full throttle.
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by www.itrsport.com »</TD></TR><TR><TD CLASS="quote">
The VTEC system, first pioneered in the Acura NSX, works similar performance magic in the Integra Type R. As the performance of the NSX has already amply demonstrated, VTEC is an innovative solution to an age-old automotive engineering problem. It elegantly solves the trade-off between tuning an engine for either high-end horsepower or low-end torque. With VTEC, Acura engineers no longer have to compromise between the two. VTEC-equipped engines can have the best of both.
The VTEC system uses three cam lobes and three corresponding rocker arms for each pair of valves. The VTEC system operates on both the intake and exhaust valves. The two outer cam lobes have a profile that optimizes low-speed torque and response. The middle lobe has a high-lift, longer-duration profile that is designed to optimize high-end horsepower.
The changeover point between low lift and high lift in the Type R is 5700 rpm (compared to 4400 rpm on the GS-R), for excellent midrange torque. This makes the Type R engine responsive under all operating conditions, and especially when going from part-throttle, steady-state cruising to full throttle.
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