why would anyone want to remove Vtec?
Thread Starter
Joined: May 2005
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From: Ottawa, On, Canada
why would anyone want to remove Vtec?
i saw some cam shafts on PW:JDM and they said "Includes both Intake and Exhaust camshafts, and all components necessary to remove VTEC."
why would you want to do this?? better gas milage?? just swapped to a GSR and thaught "hey! lets lose a little power man!" i just dont get it.
why would you want to do this?? better gas milage?? just swapped to a GSR and thaught "hey! lets lose a little power man!" i just dont get it.
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From: South Florida
Re: why would anyone want to remove Vtec? (TenLarge)
Ok you do realise that vtec is not power right? valve time changes when vtec is enganged. what vtec killer cam does eliminate the engagement,so basically its on the high lobes all the time. in other words, instead of low and high cam profile, its just high profile, therfore eliminating "vtec'
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From: South Florida
Re: why would anyone want to remove Vtec? (TenLarge)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TenLarge »</TD></TR><TR><TD CLASS="quote">ok so what your saying is that if i want performance in the high AND low-end rpms i need to eliminate the VTEC?</TD></TR></TABLE>
yes, thats basically the reason for vtec killer cams.
yes, thats basically the reason for vtec killer cams.
Thread Starter
Joined: May 2005
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From: Ottawa, On, Canada
Re: why would anyone want to remove Vtec? (hatch34)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatch34 »</TD></TR><TR><TD CLASS="quote">noob you need to learn<U> ALOT</U> before you start postin dumb questions</TD></TR></TABLE>
man, shutup, it was an innocent question "why would anyone remove VTEC" i simply believed, by reading this forum alot, that VTEC held the valves open longer in the higher RPMS, without thinking that the new ones would keep it open longer ALL THE TIME, man go flame elsewhere, im learning all this **** man, 17 and attempting a motor swap in the coming months, i have to learn it somewhere.
we don't all pretend to be high-paid honor-roll mechanics online.
man, shutup, it was an innocent question "why would anyone remove VTEC" i simply believed, by reading this forum alot, that VTEC held the valves open longer in the higher RPMS, without thinking that the new ones would keep it open longer ALL THE TIME, man go flame elsewhere, im learning all this **** man, 17 and attempting a motor swap in the coming months, i have to learn it somewhere.
we don't all pretend to be high-paid honor-roll mechanics online.
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Joined: May 2001
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From: Lynchvegas, Va, USA
Re: why would anyone want to remove Vtec? (Boostage)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostage »</TD></TR><TR><TD CLASS="quote">yes, thats basically the reason for vtec killer cams.</TD></TR></TABLE>
And to brag about how you get 10 mpg.
And to brag about how you get 10 mpg.
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Joined: May 2001
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From: Lynchvegas, Va, USA
Re: why would anyone want to remove Vtec? (hatch34)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatch34 »</TD></TR><TR><TD CLASS="quote">noob you need to learn<U> ALOT</U> before you start postin dumb questions</TD></TR></TABLE>
And you need to learn manners.
How is he suppose to learn without asking questions? You've been in government schools too long.
Dumb question? Let see:
Tech releated : check
Interesting topic: check
Question has not been posted 1000 times: check
What other topics are in this forum?
"integra interior in eg"
"Cluster options of 96 CX Hatchback?"
"98 civic ex 5" tach install"
"where I paint my car for good price?"
Obviously there's plunty of other post to flame. Shew
And you need to learn manners.
How is he suppose to learn without asking questions? You've been in government schools too long.
Dumb question? Let see:
Tech releated : check
Interesting topic: check
Question has not been posted 1000 times: check
What other topics are in this forum?
"integra interior in eg"
"Cluster options of 96 CX Hatchback?"
"98 civic ex 5" tach install"
"where I paint my car for good price?"
Obviously there's plunty of other post to flame. Shew
Thread Starter
Joined: May 2005
Posts: 166
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From: Ottawa, On, Canada
Re: why would anyone want to remove Vtec? (mrlegoman)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrlegoman »</TD></TR><TR><TD CLASS="quote">
And you need to learn manners.
How is he suppose to learn without asking questions? You've been in government schools too long.
Dumb question? Let see:
Tech releated : check
Interesting topic: check
Question has not been posted 1000 times: check
What other topics are in this forum?
"integra interior in eg"
"Cluster options of 96 CX Hatchback?"
"98 civic ex 5" tach install"
"where I paint my car for good price?"
Obviously there's plunty of other post to flame. Shew</TD></TR></TABLE>
*bows down*
thanks guys
And you need to learn manners.
How is he suppose to learn without asking questions? You've been in government schools too long.
Dumb question? Let see:
Tech releated : check
Interesting topic: check
Question has not been posted 1000 times: check
What other topics are in this forum?
"integra interior in eg"
"Cluster options of 96 CX Hatchback?"
"98 civic ex 5" tach install"
"where I paint my car for good price?"
Obviously there's plunty of other post to flame. Shew</TD></TR></TABLE>
*bows down*
thanks guys
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Joined: Mar 2004
Posts: 2,239
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From: racine, Wi, usa
Re: why would anyone want to remove Vtec? (hatch34)
It was an honest question. (I dident know either) and this is tech related so let him be, Theres plenty o people in here that deserve to be flamed at this particular moment its not him.
Member
Joined: Nov 2003
Posts: 2,274
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From: 92127
Re: why would anyone want to remove Vtec? (TenLarge)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TenLarge »</TD></TR><TR><TD CLASS="quote">ok so what your saying is that if i want performance in the high AND low-end rpms i need to eliminate the VTEC?</TD></TR></TABLE>
No. VTEC killers are generally just the VTEC lobe profile ground into all three lobes per cylinder. VTEC allows for a dual profile for street driveability. You have the small profile for economy and torque, and the high profile for heavy acceleration. VTEC killers are generally designed for high rpm track use. I would not recommend them on the street, because low end torque would suffer.
No. VTEC killers are generally just the VTEC lobe profile ground into all three lobes per cylinder. VTEC allows for a dual profile for street driveability. You have the small profile for economy and torque, and the high profile for heavy acceleration. VTEC killers are generally designed for high rpm track use. I would not recommend them on the street, because low end torque would suffer.
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Joined: Dec 2004
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From: dearborn, Michigan, USA
Re: why would anyone want to remove Vtec? (Jim Truett)
yea im in the same possition you are, about to swap my D-series for a B im just turning 18 next month 
I got yo back homie
I got yo back homie
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Joined: May 2000
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From: The Dirty Hotness
Re: why would anyone want to remove Vtec? (Jim Truett)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jim Truett »</TD></TR><TR><TD CLASS="quote">
No. VTEC killers are generally just the VTEC lobe profile ground into all three lobes per cylinder. </TD></TR></TABLE>
There are only two lobes.
Design:
The primary and secondary lobes are designed to be the same size. Overall construction of the cam has been heavily revised. With areas of stress,rigidity and weight all greatly benefiting. Normal cams are created from solid blanks, but the VTEC KILLER CAM is produced from a hollow blank, which not only reduces weight but also improves valve timing accuracy through a reduction in flexing. The cam is designed to bed in quickly and have a low wear rate.
Characteristics:
The mid rocker cam is removed & both pins are changed, reducing the valve train mass for better response. Disabling the VTEC system removes fluctuations in the oil pressure system, securing a reliable oil feed to all the main moving components. Lost motion valve should be removed. For max performance, should be used in conjunction with TODA Sports Injection kit.
The kit comes complete with camshafts and special hardware needed to complete the conversion.
No. VTEC killers are generally just the VTEC lobe profile ground into all three lobes per cylinder. </TD></TR></TABLE>
There are only two lobes.
Design:
The primary and secondary lobes are designed to be the same size. Overall construction of the cam has been heavily revised. With areas of stress,rigidity and weight all greatly benefiting. Normal cams are created from solid blanks, but the VTEC KILLER CAM is produced from a hollow blank, which not only reduces weight but also improves valve timing accuracy through a reduction in flexing. The cam is designed to bed in quickly and have a low wear rate.
Characteristics:
The mid rocker cam is removed & both pins are changed, reducing the valve train mass for better response. Disabling the VTEC system removes fluctuations in the oil pressure system, securing a reliable oil feed to all the main moving components. Lost motion valve should be removed. For max performance, should be used in conjunction with TODA Sports Injection kit.
The kit comes complete with camshafts and special hardware needed to complete the conversion.
Joined: Feb 2005
Posts: 233
Likes: 0
From: Montgomery county, MD, USA
Re: why would anyone want to remove Vtec? (nocturnaldragon)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nocturnaldragon »</TD></TR><TR><TD CLASS="quote">It was an honest question. (I dident know either) and this is tech related so let him be, Theres plenty o people in here that deserve to be flamed at this particular moment its not him.</TD></TR></TABLE>
its didn't know by the way. Not going to flame just give u a tip
its didn't know by the way. Not going to flame just give u a tip
Member
Joined: May 2002
Posts: 3,109
Likes: 3
wow its amazing how no one has a ******* clue why you eliminate vtec, yet you're all flaming the **** outta him with more wrong info. right on H-T stunners!
no its not to improve low end, no its not a cam ground with 3 same rocker lobes. thats my favorite by the way, grinding a cam with 3 rocker lobes the same to eliminate vtec, haha, its funny how far ppl can be off.
you remove vtec to reduce valvetrain weight, and parasitic losses in the LMAs and what not. if you play with new/different rocker setups you can also achieve more lift than stock rockers. When you reduce weight and parasitic losses, you make more power up top.
none of which help you gain power down low, basically the low end will run like dookie
now you ask why do ppl wanna kill their low end? how often does a race car spend under 5-6k rpm?
no its not to improve low end, no its not a cam ground with 3 same rocker lobes. thats my favorite by the way, grinding a cam with 3 rocker lobes the same to eliminate vtec, haha, its funny how far ppl can be off.
you remove vtec to reduce valvetrain weight, and parasitic losses in the LMAs and what not. if you play with new/different rocker setups you can also achieve more lift than stock rockers. When you reduce weight and parasitic losses, you make more power up top.
none of which help you gain power down low, basically the low end will run like dookie
now you ask why do ppl wanna kill their low end? how often does a race car spend under 5-6k rpm?
Joined: Jan 2003
Posts: 548
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From: Redmond, WA, U.S.A.
Re: why would anyone want to remove Vtec? (eg6hatch3)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eg6hatch3 »</TD></TR><TR><TD CLASS="quote">who was the idiot the invented that,,,, "yeah lets loose some power",,, thats stupid... 
</TD></TR></TABLE>
are you talking in reference to the VTEC killer cams??? If so i thought it was pretty well covered by the more experianced members on here. and hell if TODA, maker of some killer engines from street to F1 is willing to market them and spend the money on research on them to determine if they are a worthy performance product, then thats not that stupid. not all products are made for a universal application
</TD></TR></TABLE>are you talking in reference to the VTEC killer cams??? If so i thought it was pretty well covered by the more experianced members on here. and hell if TODA, maker of some killer engines from street to F1 is willing to market them and spend the money on research on them to determine if they are a worthy performance product, then thats not that stupid. not all products are made for a universal application
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Joined: Feb 2004
Posts: 5,263
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From: Riversides Finest, America
Reason why SOME people remove vtec:
1) You CANNOT get more then .500 lift with vtec cams. I dont care what companys advertise.
2)when vtec crosses over 1 lobe is doing all the opening and closing meaning double the stress...
Basically in my opinion only reason why you would want to remove it is to be able to run more than .500 lift. We offer a a rocker assembly kinda what TODA does but we make the primary pad longer to be able to run more lift without the lober falling off the pad. This is just what i know bud, hope it helps.
1) You CANNOT get more then .500 lift with vtec cams. I dont care what companys advertise.
2)when vtec crosses over 1 lobe is doing all the opening and closing meaning double the stress...
Basically in my opinion only reason why you would want to remove it is to be able to run more than .500 lift. We offer a a rocker assembly kinda what TODA does but we make the primary pad longer to be able to run more lift without the lober falling off the pad. This is just what i know bud, hope it helps.
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Joined: Jul 2004
Posts: 4,640
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From: VA Beach, VA, USA
Re: (93Civac)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93Civac »</TD></TR><TR><TD CLASS="quote">R&D Motorsports in Charleston SC has a civic si they are running without vtec. Its a road corse car I think.</TD></TR></TABLE>
That would be Chad Slagg's Civic Si that he runs in the H1 class of the East Coast Honda Challenge!
Chad Slagg
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RagingAngel »</TD></TR><TR><TD CLASS="quote">
There are only two lobes.
Design:
The primary and secondary lobes are designed to be the same size. Overall construction of the cam has been heavily revised. With areas of stress,rigidity and weight all greatly benefiting. Normal cams are created from solid blanks, but the VTEC KILLER CAM is produced from a hollow blank, which not only reduces weight but also improves valve timing accuracy through a reduction in flexing. The cam is designed to bed in quickly and have a low wear rate.
Characteristics:
The mid rocker cam is removed & both pins are changed, reducing the valve train mass for better response. Disabling the VTEC system removes fluctuations in the oil pressure system, securing a reliable oil feed to all the main moving components. Lost motion valve should be removed. For max performance, should be used in conjunction with TODA Sports Injection kit.
The kit comes complete with camshafts and special hardware needed to complete the conversion.
</TD></TR></TABLE>
Very good info! And to the guy that post, this is not a dumb question; so never be afraid to ask a question to learn something new.
Something else that you guys have neglected mention is a cam like this usually creates a more linear powerband and is less likely to have bumps, dips, or spikes in the power curve.
The downside however is poor gas milage! As far as loss at low end, well that depends on the setup! I run big cams(404's) on my LS motor and create way more power on the lowend than I did stock! Now with an even bigger cam(which the Vtec Killers are close in specs to the Crower 405's) that may be the case.
That would be Chad Slagg's Civic Si that he runs in the H1 class of the East Coast Honda Challenge!
Chad Slagg
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RagingAngel »</TD></TR><TR><TD CLASS="quote">
There are only two lobes.
Design:
The primary and secondary lobes are designed to be the same size. Overall construction of the cam has been heavily revised. With areas of stress,rigidity and weight all greatly benefiting. Normal cams are created from solid blanks, but the VTEC KILLER CAM is produced from a hollow blank, which not only reduces weight but also improves valve timing accuracy through a reduction in flexing. The cam is designed to bed in quickly and have a low wear rate.
Characteristics:
The mid rocker cam is removed & both pins are changed, reducing the valve train mass for better response. Disabling the VTEC system removes fluctuations in the oil pressure system, securing a reliable oil feed to all the main moving components. Lost motion valve should be removed. For max performance, should be used in conjunction with TODA Sports Injection kit.
The kit comes complete with camshafts and special hardware needed to complete the conversion.
</TD></TR></TABLE>
Very good info! And to the guy that post, this is not a dumb question; so never be afraid to ask a question to learn something new.
Something else that you guys have neglected mention is a cam like this usually creates a more linear powerband and is less likely to have bumps, dips, or spikes in the power curve.
The downside however is poor gas milage! As far as loss at low end, well that depends on the setup! I run big cams(404's) on my LS motor and create way more power on the lowend than I did stock! Now with an even bigger cam(which the Vtec Killers are close in specs to the Crower 405's) that may be the case.