i-VTEC ??? HUH ??? - Honda CRZ Forum: Honda CR-Z Hybrid Car Forums

jcramin · 10-11-2010, 11:30 AM

OK so i'm an unhappy American car guy. I have only had American cars and almost all V8s. My new CR-Z is my first NON-American car. I keep hearing about VTEC and I understand it, but how do I know when it is kicking in ? I sometimes seem to feel a power surge around 3000 RPMs ? Is that the VTEC kicking in ?

Thanks,
J

forumonlooker · 10-11-2010, 12:56 PM

Vtec doesn't kick in on this car, instead it provides efficient valve holding so that at lower rpm levels it holds open a set of intake valves to create a vortex induction.. which in turn provides better fuel mileage.

bizzybear · 10-11-2010, 05:45 PM

the "vtec kick" you're thinking of is from the more performance oriented Honda's like the Civic Si, S2000 (discontinued), Accord V6, RSX (discontinued), TL, TSX... those are a few of the engines that you WILL notice when vtec is engaged... the others have that eco-minded vtec where the "kick" is smoothed out to feel almost non-existent and is really for gaining mpg while keeping power decent...

gomarlins3 · 10-11-2010, 10:02 PM

You want to feel VTEC? Come to Idaho and go for a ride with me in my SCed and geared S2000.

JCRZ · 10-11-2010, 10:30 PM

Who needs vtec when god created forced induction

gomarlins3 · 10-11-2010, 10:43 PM

I'll keep them both thanks.

JCRZ · 10-11-2010, 10:56 PM

Lol both is better! What's up with that s2k? JR or CT? Numbers? My buddy has a CT SC things quick, couldn't hang with me but it was impressive

borcth · 10-11-2010, 11:08 PM

here's a video to show what it's like.

YouTube - VTEC SOUND

the point where the vtec crossover engages if very obvious here. Listening to that sound makes me miss my prelude. *lol*

Hope this helps.

Plus, most honda motors that have a noticable vtec engagment sound are only in dohc motors. The zf1 motor in our crz is oh sohc unfortunatly. Ohwell. I mean the sound is there in some sohc motors like TL and accord v6, but to me, it doesnt hit as hard as it's dohc brothers.

I do notice at around 5k+, there seems to be a valve lift or a crossover. It's subtle, but it's there. As bizzybear said, its more for efficiency in our car than aggressive performance.

Synapz · 10-11-2010, 11:10 PM

the best vtec crossover came from the b16b

bizzybear · 10-12-2010, 01:43 AM

VTEC is really noticeable on cars with SRI (short ram intake)...

Quote:

Originally Posted by borcth

Plus, most honda motors that have a noticable vtec engagment sound are only in dohc motors. The zf1 motor in our crz is oh sohc unfortunatly. Ohwell. I mean the sound is there in some sohc motors like TL and accord v6, but to me, it doesnt hit as hard as it's dohc brothers.

actually, if you hear those cars with an intake you can clearly hear the VTEC kick in... watch video of 2003 TL-S, VTEC is clearly noticeable...

Quote:

Originally Posted by Synapz

the best vtec crossover came from the b16b

i beg to differ on that... the older Honda cars didn't have as many chambers to reduce the sound as the newer cars do... once you put an intake on the K20 and that's the best sounding Honda engine produced for a production vehicle...

and one with ITB's for your viewing please

10-11-2010, 05:45 PM	#3 (permalink)
bizzybear Join Date: Jan 2010 Location: Sebastian, FL Posts: 5,322	the "vtec kick" you're thinking of is from the more performance oriented Honda's like the Civic Si, S2000 (discontinued), Accord V6, RSX (discontinued), TL, TSX... those are a few of the engines that you WILL notice when vtec is engaged... the others have that eco-minded vtec where the "kick" is smoothed out to feel almost non-existent and is really for gaining mpg while keeping power decent... __________________ Facebook: Roberto - Add me as a friend if you want ♫EDM♫ Fans - If you're a fan or just wanna listen Days to a Mile! - Join me on my journey to run a Marathon in 2011! INSANITY Workout!! - This is no joke haha!

10-11-2010, 10:02 PM	#4 (permalink)
gomarlins3 Senior Member Join Date: Sep 2010 Location: Kuna Idaho Posts: 2,050	You want to feel VTEC? Come to Idaho and go for a ride with me in my SCed and geared S2000. __________________ Happiness is a nice road, great weather, and driving the S with Sue in the seat next to me.

10-11-2010, 10:30 PM	#5 (permalink)
JCRZ Senior Member Join Date: Sep 2010 Location: West Hartford, CT Posts: 1,781	Who needs vtec when god created forced induction __________________ "For those 17 seconds or more, I'm free..."

10-11-2010, 10:43 PM	#6 (permalink)
gomarlins3 Senior Member Join Date: Sep 2010 Location: Kuna Idaho Posts: 2,050	I'll keep them both thanks. __________________ Happiness is a nice road, great weather, and driving the S with Sue in the seat next to me.

10-11-2010, 10:56 PM	#7 (permalink)
JCRZ Senior Member Join Date: Sep 2010 Location: West Hartford, CT Posts: 1,781	Lol both is better! What's up with that s2k? JR or CT? Numbers? My buddy has a CT SC things quick, couldn't hang with me but it was impressive __________________ "For those 17 seconds or more, I'm free..."

10-11-2010, 11:08 PM	#8 (permalink)
borcth Senior Member Join Date: Aug 2010 Location: the space coast Posts: 571	here's a video to show what it's like. YouTube - VTEC SOUND the point where the vtec crossover engages if very obvious here. Listening to that sound makes me miss my prelude. lol Hope this helps. Plus, most honda motors that have a noticable vtec engagment sound are only in dohc motors. The zf1 motor in our crz is oh sohc unfortunatly. Ohwell. I mean the sound is there in some sohc motors like TL and accord v6, but to me, it doesnt hit as hard as it's dohc brothers. I do notice at around 5k+, there seems to be a valve lift or a crossover. It's subtle, but it's there. As bizzybear said, its more for efficiency in our car than aggressive performance. __________________ 2011 Honda CR-Z EX CBP 6MT

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