Vtec

[THE_MASS]

hey guys,
i was just wondering when does Vtec engage in a Integra DC2?
As my car makes a clicking noise at 4 1/2 g's????
i know this may sound unusual but many people that have been in my car hear the same noise.... Vtec then opens at 6g's??
Does any have a clue why this occurs??? your comments would be appreciated.
By the way.. i dont have a Vtec controller either. :confused:

[ECU-MAN]

vtec should cut in around 5200 - 5500, with our hearing the noise its really hard to say what it could be.

[Savant]

vtec should cut in around 5200 - 5500, with our hearing the noise its really hard to say what it could be.
i think b16a cuts in at 5600?

However dc2 has some sort of 'pre-vtec' thing at about 4500rpm and then vtec at about 6000.

mine does the same. Put a pod filter on and you will really hear it!

[g3vtir]

Vtec kicks in at 4,400 rpm....then at 6,000 rpm the secondary intake runners open up.

[wynode]

Vtec kicks in at 4,400 rpm....then at 6,000 rpm the secondary intake runners open up.
Errr no.......the secondary intake runners open up first.......and after that VTEC cuts in.

Intake runners open up at around 4,500rpm and VTEC engages at around 5,000rpm+

[supernatural]

oh.... :|

so...wat about DC2R??? same procedure?? or??

[wynode]

dc2R doesn't have have secondary intake runners.

[g3vtir]

Wynode,

Not sure about that...i'm not saying that im right, but from what i have read its vtec first then intake runners.

Stage 1 (0-4400 RPM): Low-lift cam lobe and long intake runners.

Stage 2 (4400-5800 RPM): High-lift cam lobe and long intake runners.

Stage 3 (5800+ RPM): High-lift cam lobe and short intake runners.

"Most people confuse the opening of the short intake runners as VTEC engagement because of the dramatic change in sound. It is hard to hear VTEC at 4400 RPM using the dual-stage intake manifold because the long runners restrict flow volume to the engine in order to maintain flow velocity."

"VTEC engagement is 4400 rpm, the secondaries open up at 5800 rpm"

www.team-integra.net (http://www.team-integra.net)

[snowman95]

Wynode,

Not sure about that...i'm not saying that im right, but from what i have read its vtec first then intake runners.

Stage 1 (0-4400 RPM): Low-lift cam lobe and long intake runners.

Stage 2 (4400-5800 RPM): High-lift cam lobe and long intake runners.

Stage 3 (5800+ RPM): High-lift cam lobe and short intake runners.

"Most people confuse the opening of the short intake runners as VTEC engagement because of the dramatic change in sound. It is hard to hear VTEC at 4400 RPM using the dual-stage intake manifold because the long runners restrict flow volume to the engine in order to maintain flow velocity."

"VTEC engagement is 4400 rpm, the secondaries open up at 5800 rpm"

www.team-integra.net (http://www.team-integra.net)

ding ding ding - Winner :thumbsup:

[pornstar]

yup sure is :)

[dc2r]

B18C7 VTEC engagement at 5700 rpm

[flyryd]

Wynode,

Not sure about that...i'm not saying that im right, but from what i have read its vtec first then intake runners.

Stage 1 (0-4400 RPM): Low-lift cam lobe and long intake runners.

Stage 2 (4400-5800 RPM): High-lift cam lobe and long intake runners.

Stage 3 (5800+ RPM): High-lift cam lobe and short intake runners.

"Most people confuse the opening of the short intake runners as VTEC engagement because of the dramatic change in sound. It is hard to hear VTEC at 4400 RPM using the dual-stage intake manifold because the long runners restrict flow volume to the engine in order to maintain flow velocity."

"VTEC engagement is 4400 rpm, the secondaries open up at 5800 rpm"

www.team-integra.net (http://www.team-integra.net)
thats right :thumbsup:

[wynode]

Looks like i've been owned!

I'm still wondering though why VTEC engages sooo early though??

[Integra]

I think its the VTEC engaging.. i rekon its the pod filter too, ive got a twin 2-1 pod filter and it makes a loud noise @ 3000rom 3500prm, could be a little vtec kick in.

[viperx]

It is the vtec first

http://www.honda.co.jp/factbook/auto/INTEGRA/19930520/image3/008-001.jpg



Wynode,

Not sure about that...i'm not saying that im right, but from what i have read its vtec first then intake runners.

Stage 1 (0-4400 RPM): Low-lift cam lobe and long intake runners.

Stage 2 (4400-5800 RPM): High-lift cam lobe and long intake runners.

Stage 3 (5800+ RPM): High-lift cam lobe and short intake runners.

"Most people confuse the opening of the short intake runners as VTEC engagement because of the dramatic change in sound. It is hard to hear VTEC at 4400 RPM using the dual-stage intake manifold because the long runners restrict flow volume to the engine in order to maintain flow velocity."

"VTEC engagement is 4400 rpm, the secondaries open up at 5800 rpm"

www.team-integra.net (http://www.team-integra.net/)

[EG_2_TEG]

shortintakerunners4life

they're the fukers that make it sound good :)

if only i had them :(

[THE_MASS]

thanks for the advice... i thought i was going crazy..... :0

[XPLOSV]

is it wise to buy a vtec controller?
since it kick in a lil late?

[industrie]

nothing beats a H22a engine going..bahhhh...mine kicks in 5500 in a prelude VTIR

[spetz]

So the kick that VTEC gives isn't in fact from the cam's switching over, but the intake runners going from long to short?

Is this the same with all variable valve timing/lift cars like MIVEC and VVTi-L?

[Spoon-Accord]

ahahaha H22a at 5.5k??
mine kicks at 5k.. u can hear it expecially in the exhaust note..*guys who heard my car, correct me if i am wrong :P*

does that make the B18c a diffrent engine compared to others.. with this intake runners and etc..?

Ken

[spetz]

When I drove VTEC prelude kick in was at 5500rpm...
Same with B16C VTEC

[JRC]

With my teggie.......first i hear my AEM V2 make this crazy gushing noise at about 5000 then at 5800 my Apexi GT Spec takes over and i cant hear nothing else after that......

Love driving through tunnels and dropping down to second to really enjoy it....

[Spoon-Accord]

With my teggie.......first i hear my AEM V2 make this crazy gushing noise at about 5000 then at 5800 my Apexi GT Spec takes over and i cant hear nothing else after that......

Love driving through tunnels and dropping down to second to really enjoy it....

i feel the same way too bro..
in tunnels just dropping in high gears and making the exhaust sounds..
omg.. i have to put my windows up cause it gets too barky

lolz

Ken

[h22a accord]

i must be reading wrong but dont the intake runners open at around 4000rpm then vtec engage at 5300rpm...thats what mine does.

[Spoon-Accord]

ding ding.. :D
ken

[g3vtir]

h22a-accord...nope..its vtec first then intake runners...

[wynode]

i must be reading wrong but dont the intake runners open at around 4000rpm then vtec engage at 5300rpm...thats what mine does.
Yeah that's what I used to think :(