in a b series motor what are the benifits of dual engagment vtec.. considering chipping my engine soon and this option came across in a conversation between a few of my buddies.. what difference does it make in terms of engine power [low, mid, and high]

 

wtf are you talking about with "dual engagement?"

 

You need to use the search function and do alot of reading... You don't chip an engine.

Hondas VTEC mechanism allows the selective use of more than one camshaft profile within a single head based upon rpm and load. You can read more about it here: http://asia.vtec.net/spfeature/vtecimpl/vtec1.html

 

maybe he's talking about vtec in gsr?

 

Maybe he's rolling in an '87 Prelude and doesn't understand what VTEC is?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20C5 Turbo &raquo;</TD></TR><TR><TD CLASS="quote">Maybe he's rolling in an '87 Prelude and doesn't understand what VTEC is?</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20C5 Turbo &raquo;</TD></TR><TR><TD CLASS="quote">You need to use the search function and do alot of reading... You don't chip an engine.

Hondas VTEC mechanism allows the selective use of more than one camshaft profile within a single head based upon rpm and load. You can read more about it here: http://asia.vtec.net/spfeature/vtecimpl/vtec1.html</TD></TR></TABLE>

The HX had a three stage vtec iirc.

similar to what he's talking about.. maybe you should be the one searching

 

as far as i know the ONLY car to have 3 stages/2 vtec engagements is the 96-00 civic vti with the d15b....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr1244 &raquo;</TD></TR><TR><TD CLASS="quote">maybe he's talking about vtec in gsr?</TD></TR></TABLE>

No. VTEC engages, then later the secondaries in the intake manifold open.

As a matter of fact, this should answer everyone's questions:

https://honda-tech.com/zerosearch

/thread

 

he's talking about iabs.
duh

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20C5 Turbo &raquo;</TD></TR><TR><TD CLASS="quote">http://asia.vtec.net/spfeature/vtecimpl/vtec1.html</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">as far as i know the ONLY car to have 3 stages/2 vtec engagements is the 96-00 civic vti with the d15b....</TD></TR></TABLE>
yessir

the 96+ d15b has a vtec-e 12valve mode, 8 exh 4 int until around 2800 rpm or so, when the 4 intake valves dont provide enough airflow for the given rpm. then the engine switches to 16valve and operates the same way standard vtec does on the low cam profile, then after (5000ish, i dont recall the upper engagement point) the rockers move to the high cam profile as per standard vtec.

it also has a lean burn function depending on the load, making for kickass fuel economy and still the 130hp of the previous d15b

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by johnecon2001 &raquo;</TD></TR><TR><TD CLASS="quote">The HX had a three stage vtec iirc.</TD></TR></TABLE> no the HX is running the d16y5, which only has vtec-e, the single engagement point at 2800.

 

about the <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by black_EM1 &raquo;</TD></TR><TR><TD CLASS="quote">No. VTEC engages, then later the secondaries in the intake manifold open.

As a matter of fact, this should answer everyone's questions:

https://honda-tech.com/zerosearch

/thread</TD></TR></TABLE>

my buddy of mine has his butterflies [secondaries] open permenently..it hurts his high end power but he benifits in mid range..

about dual engagment i was refering to to cycles of vtec per gear.. if that makes sence to anyone out their.. like vtec between 3- 5rpms and 7- 9.5rpms within the same gear..

 

You have been misinformed. Keeping the IAB butterflies OPEN will hurt the midrange performance at WOT, but it won't affect the high end performance over a properly operating stock configuration. Keeping them CLOSED will hurt the top end without any effect on the midrange.

A few words about changing the VTEC switchover point for each gear: There is only ONE optimal switchover point for any given engine combination. Switching to the high cam before or after that point will result in the loss of potential power, regardless of what gear you are in.

If you are talking about engaging the high cam, then dropping it, then re-engaging it within a single gears range, you have smoked too much crack.

 

i think he does smoke too much crack.. VTEC does not kick in twice.. it only kick in once at a certain RPM and it goes like this.. vrooooooooooommmmmBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmb18ckid &raquo;</TD></TR><TR><TD CLASS="quote">i think he does smoke too much crack.. VTEC does not kick in twice.. it only kick in once at a certain RPM and it goes like this.. vrooooooooooommmmmBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA</TD></TR></TABLE>

notice im not talking about a stock motor..if you were'nt such a fuktard you would have read that it envolves a chipped engine because a stock one only deals with the high cam once (DUH)..as for making sounds i guess u have a lot of practice making noises in your bathroom, pretending you have a honda

my buddies type r motor engages twice with his chipped ECU..3-5rpms and 7-9.5rpms..and the second engagement isn't the butterflies opening up..i dont need any more people making noises about how vtec sounds

 

Damn you......

VTEC does not engage twice. The only motor with secondaries is the GSR motor.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 87shytwhip &raquo;</TD></TR><TR><TD CLASS="quote">

notice im not talking about a stock motor..if you were'nt such a fuktard you would have read that it envolves a chipped engine because a stock one only deals with the high cam once (DUH)..as for making sounds i guess u have a lot of practice making noises in your bathroom, pretending you have a honda

my buddies type r motor engages twice with his chipped ECU..3-5rpms and 7-9.5rpms..and the second engagement isn't the butterflies opening up..i dont need any more people making noises about how vtec sounds</TD></TR></TABLE>

As for the rest of what you said, try searching here:

https://honda-tech.com/zerosearch

Any further stupidity out of you will not be tolerated.

 

Crack is whack stay away, cuz u have no clue what ur saying.

 

This was productive.