So I have a 2000 4dr Honda Accord LX, 4 cylinder, automatic. I would just like to know at what rpm does vtec engage? And what is the redline for this engine because one time I revved it in neutral and the tachometer bounced only at 5100 rpm I believe...

 

redline is where the little red lines start

vtec can engage at any point above 3000rpm I believe depending on the oil pressure and some other stuff. just do a search on it.

however if you have an LX you do not have VTEC

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheMuffinMan &raquo;</TD></TR><TR><TD CLASS="quote">redline is where the little red lines start

vtec can engage at any point above 3000rpm I believe depending on the oil pressure and some other stuff. just do a search on it.

however if you have an LX you do not have VTEC</TD></TR></TABLE>

yep.

EX = F22B1 = vtak
LX = F22B2 = non vtak

 

I have a manual tranny, and my Vtec engages at 3900 RPM's, I believe the automatics engage at 3,450 based on their shifts. This based on the F23 motor, which I'm guessing you have.

 

For those of you who said it does not have VTEC well heres the proof it does, I just took this pic 5 min ago... and its a F23

 

the 6th gen lx DOES have vtec.

just pop the hood and take a look at your valve cover

unless you're in cali then it will say ulev.

the only 6th gen without vtec was the dx base model.

and vtec kicks in much sooner than has been posted above.

depending on throttle and many other factors it will come on between 2-3k, or so.

here's some info on a vtec indicator:

https://honda-tech.com/zerothread?id=1869866

the early engagement makes it almost impossible to "feel" it kick in (in the f23).

 

i see you found your valve cover

since you have an auto i think there is a rev limiter in the area you mention, when the car is in neutral.

when driving redline is 6250 (i believe) and the rev limiter is a bit higher.

 

I'm going to set it straight. All 5th Gen except EX models do NOT have VTEC. Starting 6th gen they all have VTEC. If you have a CA ULEV model, you do HAVE VTEC. =P K cool.

 

Find me proof that it's between 2 to 3k, cause I ain't buyin it. There would be no point of Vtec at such an easrly engagement

 

And I KNOW when mine kicks in(3,900RPM's) because I can feel it and hear it, and that is where it's redlining at now that Vtec isnt engaging for me
I could be a little off for the automatic, but not that far off-

 

From Mr Hondadudes post earlier, a link about V-tec operation,
http://members.troublecodes.net/hondadude/vtec.jpg

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Importn2oRacer &raquo;</TD></TR><TR><TD CLASS="quote">And what is the redline for this engine because one time I revved it in neutral and the tachometer bounced only at 5100 rpm I believe...</TD></TR></TABLE>

Yes, in neutral it will start to bounce around 5k. The auto tranny shifts at 6.25k, but if you manually hold it in gear, you can get it up to 6.5k before you hit fuel cutoff.

 

Alright, it's time to correct all the wrong info in here.

For F23's, VTEC will engage anywhere between 2300 and 3800 rpms, depending on throttle position, engine load, speed, oil pressure, etc.

A 2000 4-cyl Accord LX has an F23A1 or F23A4 motor. (The A4 motor is the ULEV motor found in Cali and various other places.) For 6th gen Accords (98-02), both the LX and EX Accords have VTEC. The DX model came with the F23A5 non-VTEC motor.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aci78 &raquo;</TD></TR><TR><TD CLASS="quote">Find me proof that it's between 2 to 3k, cause I ain't buyin it. There would be no point of Vtec at such an easrly engagement</TD></TR></TABLE>

The F23's VTEC engagement point is variable. What you need to understand is that, for these cars, VTEC serves more of an economical purpose. It's not there simply for a boost in power in the upper-rpm range. It's there to improve efficiency over a large range in order to boost fuel economy. So yes, there IS a point for such an early engagement in many situations.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Importn2oRacer &raquo;</TD></TR><TR><TD CLASS="quote">...because one time I revved it in neutral and the tachometer bounced only at 5100 rpm I believe...</TD></TR></TABLE>

There is a lower redline while in neutral.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aci78 &raquo;</TD></TR><TR><TD CLASS="quote">I have a manual tranny, and my Vtec engages at 3900 RPM's, I believe the automatics engage at 3,450 based on their shifts. This based on the F23 motor, which I'm guessing you have.</TD></TR></TABLE>

Whether you have a manual transmission or automatic has absolutely no effect on the VTEC engagement point.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by The-Kid &raquo;</TD></TR><TR><TD CLASS="quote">I'm going to set it straight. All 5th Gen except EX models do NOT have VTEC. Starting 6th gen they all have VTEC. If you have a CA ULEV model, you do HAVE VTEC. =P K cool.</TD></TR></TABLE>

Except 6th gen DX models (F23A5) they dont have VTEC. But they are very rare and I have yet to see one in my city.

 

well- I was assuming this was my V-tec engagement point since now that Vtec won't engage , that is as high as my engine will idle (3900 rpms). I read many other forums after you posted that and they all for the most part agree that Vtec has a variable engagement point.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by philadd &raquo;</TD></TR><TR><TD CLASS="quote">Alright, it's time to correct all the wrong info in here.

For F23's, VTEC will engage anywhere between 2300 and 3800 rpms, depending on throttle position, engine load, speed, oil pressure, etc.

A 2000 4-cyl Accord LX has an F23A1 or F23A4 motor. (The A4 motor is the ULEV motor found in Cali and various other places.) For 6th gen Accords (98-02), both the LX and EX Accords have VTEC. The DX model came with the F23A5 non-VTEC motor.

The F23's VTEC engagement point is variable. What you need to understand is that, for these cars, VTEC serves more of an economical purpose. It's not there simply for a boost in power in the upper-rpm range. It's there to improve efficiency over a large range in order to boost fuel economy. So yes, there IS a point for such an early engagement in many situations.

There is a lower redline while in neutral.

Whether you have a manual transmission or a</TD></TR></TABLE>

finally someone with some answers.

i know it kicks in low because my vtec light tells me so

before i had it i could have sworn i could "feel" it kick in at around 4k, but that's really just a torque peak which has been shown in some dyno charts of stock f23's.

 

Precisely the moment before your dreams come true.

 

get a vtaaaaaaaakkkkk controller. =P

 

well son of a gun, didn't know those things had vtec, I did know the 98+ Value Package got power windows/power locks whereas my year did not.

good to know

 

F23A1 = 1998-2002 Honda Accord LX's.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheMuffinMan &raquo;</TD></TR><TR><TD CLASS="quote">well son of a gun, didn't know those things had vtec, I did know the 98+ Value Package got power windows/power locks whereas my year did not.

good to know</TD></TR></TABLE>
I guess honda got generous