myguitar

What up everyone!?!?

I just recently got a GSR motor for my Integra. It was a full swap from a 1995 car with 71K on it, OBD 1 ECU. All the mods are listed below.

What puzzles me is that the VTEC won't come on at all when I start the car, until it actually gets a little warm, but then it starts kicking in at around 4500 RPM.

Is it normal with B18C motors that they have to warm up before the VTEC will start working? If it's uncommon, please let me know what I should do to fix it..

Thanks a bunch!!

Dartanian

Yes, that is one of the parameters for vtec to engage.

You shouldn't be revving that high with the engine cold in the first place. Wait until it warms up until you go into vtec range.

djtony5

Sir....your are correct. Just don't beat on your car if its not warm up yet please.

ecks_fourttwo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Das Schmoo &raquo;</TD></TR><TR><TD CLASS="quote">Yes, that is one of the parameters for vtec to engage.

You shouldn't be revving that high with the engine cold in the first place. Wait until it warms up until you go into vtec range.</TD></TR></TABLE>

to that

myguitar

I never went high on revs anyways, the way I noticed it was that the sound of the engine will change very dramatically when the VTEC comes on at 4500 RPM. When the car is cold, there is no change in sound at all near that range. The most I went on a cold motor was 5500 RPM before I figured out that the VTEC wasn't engaging....

Thanks on a quick response guys...

boostn5Ghaba

Das Schmoo is correct, don't be reving the engine while it's cold.

SlammedDC2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostn5Ghaba &raquo;</TD></TR><TR><TD CLASS="quote">Das Schmoo is correct, don't be reving the engine while it's cold.</TD></TR></TABLE>

Dutch-VTEC

ya, that is probably the worst thing you could do for your engine. Reving until you hit vtec while the engine is cold could expletive up your motor. You have to wait for all the internals to get lubed up with oil before anything. Remember, vtec only works with good oil pressure.

nitrofish420

Yeah, VTEC won't engage until the coolant temp is up to snuff. Also, VTEC on a GSR motor doesn't sound drastic or loud. It's noticable, but not obvious.

myguitar

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nitrofish420 &raquo;</TD></TR><TR><TD CLASS="quote">Yeah, VTEC won't engage until the coolant temp is up to snuff. Also, VTEC on a GSR motor doesn't sound drastic or loud. It's noticable, but not obvious. </TD></TR></TABLE>

It's pretty drastic with a test pipe. Kind of gets annoying too but I do need to get a better exhaust on it.

Thanks everyone.

nitrofish420

I've got intake, header, test pipe and exhaust on mine, and it's still not very pronounced. But I've got the RS*R ExMag, so maybe the quietness makes it less noticeable...?

Rms13

also if you own a vafc or somthing like that, watch out for revving high when the engine is cold, you can hit vtec with a mangement system anytime above your set amount

Uncle Ben's

in addition to vtec engaging only when the engine is at normal operating temperature, it will not engage if oil pressure is too low.

DAcraze

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TeamDoubleClutch &raquo;</TD></TR><TR><TD CLASS="quote">ya, that is probably the worst thing you could do for your engine. Reving until you hit vtec while the engine is cold could expletive up your motor. You have to wait for all the internals to get lubed up with oil before anything. Remember, vtec only works with good oil pressure.</TD></TR></TABLE>

right, please treat ure engine with care

loudassVTEC

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

right, please treat ure engine with care</TD></TR></TABLE>

Yeah, revving, or putting a high load on the engine while it is cold is one thing that will cause your engine to wear out prematurely. When the enginel is cold, all the sizes are out of spec.

projectTeG

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by myguitar &raquo;</TD></TR><TR><TD CLASS="quote">What up everyone!?!?

I just recently got a GSR motor for my Integra. It was a full swap from a 1995 car with 71K on it, OBD 1 ECU. All the mods are listed below.

What puzzles me is that the VTEC won't come on at all when I start the car, until it actually gets a little warm, but then it starts kicking in at around 4500 RPM.

Is it normal with B18C motors that they have to warm up before the VTEC will start working? If it's uncommon, please let me know what I should do to fix it..

Thanks a bunch!!</TD></TR></TABLE>

yes that is normal....your actually suppose to wait for any engine to get to full operating temp before you start pushing it.

. M i c h a e l

damn..enough people give the same answer in here?

Haleiwa-Brando

Why is your VTEC engaging at such a low RPM? Are you running a chipped ECU or a piggyback system?

projectTeG

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Haleiwa-Brando &raquo;</TD></TR><TR><TD CLASS="quote">Why is your VTEC engaging at such a low RPM? Are you running a chipped ECU or a piggyback system?</TD></TR></TABLE>

on gsrs the vtec cross over is at 4400rpms and the butterflys open at 5650rpms i believe.


Modified by projectTeG at 6:46 AM 1/15/2006

Dogginator

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

on gsrs vtec crosses over at 4400rpms and the butterflys open at 5650 i believe.</TD></TR></TABLE>

I don't know why, but the way that is written makes it sound like VTEC is tapping power from the spirit world.

projectTeG

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">I don't know why, but the way that is written makes it sound like VTEC is tapping power from the spirit world. </TD></TR></TABLE>

whoops

HatchedGTI

I don't know about you guys, but I don't hear vtec engage, I only hear the butterflies open at 5700 and can feel a little increase in power... I don't feel nothin at 4400

loudassVTEC

You really can't feel VTEC in a GSR. Your really not supposed to feel it at all. It's not like nitrous, where it hits and you go faster. It's just variable cam profiles, one to make good low end power, and one for top end. In my opinion, VTEC is way over-rated. People act like it is god or something, and that without a VTEC motor you don't have ****. I'm not flaming, just my .02.

projectTeG

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HatchedGTI &raquo;</TD></TR><TR><TD CLASS="quote">I don't know about you guys, but I don't hear vtec engage, I only hear the butterflies open at 5700 and can feel a little increase in power... I don't feel nothin at 4400</TD></TR></TABLE>

yea thats what i normally hear....you can barily hear it on my friends gsr

EJ8chu

iTrader: (2)

I have also heard that VTEC wont engage when you are jusr revving up. I think you have to be going like 13 MPH on a warm motor to engage