the earlier it kicks it's weaker right? and the later it kicks to stronger? is that true.?

 

basically all there is to it is...

stock cam(s) = use the stock crossover point.. honda made it the perfect point.
bigger cam(s) = dyno tune for smoothest x-over

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by X-Static &raquo;</TD></TR><TR><TD CLASS="quote">basically all there is to it is...
stock cam(s) = use the stock crossover point.. honda made it the perfect point.
</TD></TR></TABLE>

I would not go that far, Honda probably had fuel efficiency in there minds when setting the vtec cross over, anyways the point I'm trying to make is you can move it and get a little more power out of your engine but only do it on a dyno.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GsRdHatcH &raquo;</TD></TR><TR><TD CLASS="quote">the earlier it kicks it's weaker right? and the later it kicks to stronger? is that true.?</TD></TR></TABLE>


what do you define "weaker" and "stronger" as?

The earlier you kick it in, the less you feel it - unless you kick it in so far that the car bogs.

The later it kicks in the more you feel it, but you may have wasted time on the small lobe getting it up to the crossover point. Putting it at a lower point would have made a smoother and better dyno curve - more power through the whole curve.

Ideally you shouldn't really feel vtec slam in. It should be a gradual pull that just gets stronger.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4drEF &raquo;</TD></TR><TR><TD CLASS="quote">

Ideally you shouldn't really feel vtec slam in. It should be a gradual pull that just gets stronger.</TD></TR></TABLE>

That's just something d-series owners say.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EL Vap133 &raquo;</TD></TR><TR><TD CLASS="quote">

That's just something d-series owners say. </TD></TR></TABLE>

lol!

And B-series owners think it's supposed to kick in like a mac truck just slammed into the back of their car going 100mph. BAAAAM! - WHOOOO VTEC booiiiii!!!!

Just set the crossover at 6000 rpm in that case. Rev the **** out of the small lobe until you finally get to 6000 rpm and fell that VTEC kick in. You will think you were in the live audiance for Emril's cooking show - BAM!

 

I have to wear a neck brace when I drive my crx cause vtec kicks in too hard y0!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4drEF &raquo;</TD></TR><TR><TD CLASS="quote"> Putting it at a lower point would have made a smoother and better dyno curve - more power through the whole curve.

Ideally you shouldn't really feel vtec slam in. It should be a gradual pull that just gets stronger.</TD></TR></TABLE>

This is actually how I have mine.. butt dyno of course. I was useing stock x-over points for a y8 (5500rpm or something?) and I could physically feel the 1st cam putter out and my car drag until the 2nd cam took over. Now it's set at 4500rpm and it's a smooth pull all the way up.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4drEF &raquo;</TD></TR><TR><TD CLASS="quote">what do you define "weaker" and "stronger" as?.</TD></TR></TABLE>

Sorry for the mistype. What I meant is do you gain more power or do you lose power. Sorry.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GsRdHatcH &raquo;</TD></TR><TR><TD CLASS="quote">Sorry for the mistype. What I meant is do you gain more power or do you lose power. Sorry.</TD></TR></TABLE>

You won't know unless you're on a dyno, if my VTEC X only makes power at 5k, no lower

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC 91 Civic &raquo;</TD></TR><TR><TD CLASS="quote">

You won't know unless you're on a dyno, if my VTEC X only makes power at 5k, no lower</TD></TR></TABLE>

i agree, any less then 5k it'll fall on it's face. 5.5k seems to be a normal x-over point. If you have access to a dyno and a way to change vtec x-over you can do it optimally this way.

1. Set VTEC X-over to 8k
2. dyno run to 8k.
3. Set VTEC x-over to 3k
4. dyno run to redline
5. lay the two graphs over each other. Where teh TQ crosses set vtec there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC 91 Civic &raquo;</TD></TR><TR><TD CLASS="quote">You won't know unless you're on a dyno, if my VTEC X only makes power at 5k, no lower</TD></TR></TABLE>

I don't know about that, a lot of people are running at 4800 and they said thats where they got the most gains out of it.

 

yea its true the later the vtec kicks in the more u feel it.

I tired two different ecu one CTR ecu and Chipped P28

ctr kicks at 6100 it sounds light lighting. 8600 redline

and chipped kicks at 5100 doesn't sound bad but redlines at 9100

 

So can anyone else back this up? ...Any other Recommendations.

 

jump on a dyno is the only sure fire way

 

I just say that you should decide what is right for your car.
Is it a race car? or perhaps it is a daily beater, in which case, it won't really mater.
If it is a daily driven racecar (OXYMORON) then perhaps you should set the crossover as it was stated earlier with the two different dyno graphs. Lay them up, and and where your torque curve crosses over, you should set the VTEC point there.

If it is ONLY a racecar, you shouldn't even be running stock cams.

IT