ays, Help Vtec engagement?
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ays, Help Vtec engagement?
Hi im new here, anyways i recently bought a 94 gsr converted to a 98 and up model. I notice the vtec engages at around 5500 rpm. I thought it was suppose to engage at 4400 rpm? The car is pretty much stock, all it has is an intake. Anyone know why it might be engaging at 5500 rpm? Thanks
Heres a pic:
Heres a pic:
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From: Mustafar
Re: ays, Help Vtec engagement? (AiKwuJiTong)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AiKwuJiTong »</TD></TR><TR><TD CLASS="quote">i can clearly hear the vtec crossover at 5500 rpm.....maybe its just me then. Thanks for the help</TD></TR></TABLE>
As tngay stated, what you're hearing around 5500 RPM isn't VTEC engaging, it is the secondary runners in your IM opening. The sound of the runners opening on a GS-R is typically much more noticeable than the sound of VTEC switching over at ~4400 RPM.
As tngay stated, what you're hearing around 5500 RPM isn't VTEC engaging, it is the secondary runners in your IM opening. The sound of the runners opening on a GS-R is typically much more noticeable than the sound of VTEC switching over at ~4400 RPM.
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From: so ca, ca, us
Re: ays, Help Vtec engagement? (AiKwuJiTong)
dont forget gsr's are dual stage vtec, unlike Si, it engages at 4400rpm and the secondary butterfly which is a lot louder and more powerfull engages are 5500-5800rpm
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From: Mankato, MN, USA
Re: ays, Help Vtec engagement? (hondaIntegra71)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaIntegra71 »</TD></TR><TR><TD CLASS="quote">dont forget gsr's are dual stage vtec, unlike Si, it engages at 4400rpm and the secondary butterfly which is a lot louder and more powerfull engages are 5500-5800rpm</TD></TR></TABLE>
dual stage vtec huh? i didn't know that the butterfly was more powerful either....
dual stage vtec huh? i didn't know that the butterfly was more powerful either....
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From: norwalk, ca, u.s
Re: ays, Help Vtec engagement? (AiKwuJiTong)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AiKwuJiTong »</TD></TR><TR><TD CLASS="quote">Hi im new here, anyways i recently bought a 94 gsr converted to a 98 and up model. I notice the vtec engages at around 5500 rpm. I thought it was suppose to engage at 4400 rpm? The car is pretty much stock, all it has is an intake. Anyone know why it might be engaging at 5500 rpm? Thanks
Heres a pic:
</TD></TR></TABLE>
haha no boy it engages at 5500 some at 5700....not 4400,,,..
Heres a pic:
</TD></TR></TABLE>haha no boy it engages at 5500 some at 5700....not 4400,,,..
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From: elVap tricks for me
Re: ays, Help Vtec engagement? (tngay)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tngay »</TD></TR><TR><TD CLASS="quote">it does engages at 4400. u just didnt notice it. u think its 5500 becuase the secondary butterfly opened</TD></TR></TABLE> god damnit
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From: norwalk, ca, u.s
Re: ays, Help Vtec engagement? (1quickLS)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1quickLS »</TD></TR><TR><TD CLASS="quote"> god damnit</TD></TR></TABLE>
my vtec is so smooth i couldn't tell at 4400..and i can barely notice the different in vtec at 5700 ...so THEREFORE vtec at 5700
my vtec is so smooth i couldn't tell at 4400..and i can barely notice the different in vtec at 5700 ...so THEREFORE vtec at 5700
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Re: ays, Help Vtec engagement? (yeegsr)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yeegsr »</TD></TR><TR><TD CLASS="quote">
haha no boy it engages at 5500 some at 5700....not 4400,,,..</TD></TR></TABLE>
uh no BOY it engages at 4400 and 2ndary butterflies open at 5750.
people cant hear vtec engage usally so they alway think that secondary butterflies is the vtec engaging
4400 - Vtec
5750 (according to Helms) - Secondary Butterflies (NOT VTEC, not a second stage of VTEC, nothing like that)
haha no boy it engages at 5500 some at 5700....not 4400,,,..</TD></TR></TABLE>
uh no BOY it engages at 4400 and 2ndary butterflies open at 5750.
people cant hear vtec engage usally so they alway think that secondary butterflies is the vtec engaging
4400 - Vtec
5750 (according to Helms) - Secondary Butterflies (NOT VTEC, not a second stage of VTEC, nothing like that)
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From: chicago, IL
Re: ays, Help Vtec engagement? (yeegsr)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yeegsr »</TD></TR><TR><TD CLASS="quote">
my vtec is so smooth i couldn't tell at 4400..and i can barely notice the different in vtec at 5700 ...so THEREFORE vtec at 5700</TD></TR></TABLE>
my god~!
imo mods should've deleted this after a quick answer to the question or deleted this thread right away cuz it's been beaten to death or delete it after a response to this.
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From: NY, U.S.A
Re: ays, Help Vtec engagement? (Dc2 Powered)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dc2 Powered »</TD></TR><TR><TD CLASS="quote">
uh no BOY it engages at 4400 and 2ndary butterflies open at 5750.
people cant hear vtec engage usally so they alway think that secondary butterflies is the vtec engaging
4400 - Vtec
5750 (according to Helms) - Secondary Butterflies (NOT VTEC, not a second stage of VTEC, nothing like that)
</TD></TR></TABLE>
This is the only post that should have been made in this thread. If you don't know the facts on a technical question DON'T ANSWER it. That is why this forum only has basic info, posts.
uh no BOY it engages at 4400 and 2ndary butterflies open at 5750.
people cant hear vtec engage usally so they alway think that secondary butterflies is the vtec engaging
4400 - Vtec
5750 (according to Helms) - Secondary Butterflies (NOT VTEC, not a second stage of VTEC, nothing like that)
</TD></TR></TABLE>
This is the only post that should have been made in this thread. If you don't know the facts on a technical question DON'T ANSWER it. That is why this forum only has basic info, posts.
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Re: ays, Help Vtec engagement? (furious94ls)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by furious94ls »</TD></TR><TR><TD CLASS="quote">
This is the only post that should have been made in this thread. If you don't know the facts on a technical question DON'T ANSWER it. That is why this forum only has basic info, posts.
</TD></TR></TABLE>
This is the only post that should have been made in this thread. If you don't know the facts on a technical question DON'T ANSWER it. That is why this forum only has basic info, posts.
</TD></TR></TABLE>
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From: norwalk, ca, u.s
Re: ays, Help Vtec engagement? (xx dc2teg xx)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xx dc2teg xx »</TD></TR><TR><TD CLASS="quote">
my god~!
imo mods should've deleted this after a quick answer to the question or deleted this thread right away cuz it's been beaten to death or delete it after a response to this.</TD></TR></TABLE>
dude chill out man...im just kidding...mine kicked in at 4.4-4.7 i couldn't tell where since the gap is only 300rpm ....but mine wasn't like kick in hard or ****...it's smooth transition...and that the way it should be...
honestly i odnt feel **** at 5500 or 5700 like people said...
just to make you happy again...yes i feel the vtec at 4.4k rpm ..
my god~!
imo mods should've deleted this after a quick answer to the question or deleted this thread right away cuz it's been beaten to death or delete it after a response to this.</TD></TR></TABLE>
dude chill out man...im just kidding...mine kicked in at 4.4-4.7 i couldn't tell where since the gap is only 300rpm ....but mine wasn't like kick in hard or ****...it's smooth transition...and that the way it should be...
honestly i odnt feel **** at 5500 or 5700 like people said...
just to make you happy again...yes i feel the vtec at 4.4k rpm ..
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From: Central Valley, CA
Re: ays, Help Vtec engagement? (yeegsr)
Geez, I can't believe how many people don't know what the **** their talking about.
Stock GSR VTEC Crossover: 4,400 rpm
END OF STORY.
This thread needs to be locked.
Stock GSR VTEC Crossover: 4,400 rpm
END OF STORY.
This thread needs to be locked.
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From: NY/Boston, USA
Re: ays, Help Vtec engagement? (BucsJosh)
My car is wierd. I have a JDM GSR motor so VTEC cross's over at 4600 and I distintively hear a big change in the noise (VTEC led goes on too) but I dont hear the secondaries opening at all...ever
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From: Albuquerque, United States of America
Re: ays, Help Vtec engagement? (tommymoose)
my vtec engages at 5100 ... oh wait, nvm 
Seriously, though, b18c1's have the VTEC engagement at 4400 rpm, short-runner intake manifold butterflies open at 5700ish. Like said before, the engagement at 5700 IS NOT a 2nd stage of vtec, it's just the intake manifold "changing" the runner length to keep the air velocity high in the higher rpms. Prior to that, the air takes the other path to keep the velocity up at low rpm to help with low-end torque and midrange power.
Seriously, though, b18c1's have the VTEC engagement at 4400 rpm, short-runner intake manifold butterflies open at 5700ish. Like said before, the engagement at 5700 IS NOT a 2nd stage of vtec, it's just the intake manifold "changing" the runner length to keep the air velocity high in the higher rpms. Prior to that, the air takes the other path to keep the velocity up at low rpm to help with low-end torque and midrange power.
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From: Melbourne, Victoria, Australia
Re: ays, Help Vtec engagement? (garados)
mind you i dont know when vtec engages nor when its ment to ^_^. but i found this interesting website that give you a easy instalation light to "lightup" when vtec engages i thought it might be usefull to some of you
http://home.earthlink.net/~civ....html
http://home.earthlink.net/~civ....html
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