Zs with VTEC????

Redline37 · 04-25-2010, 03:18 PM

Quote:

Originally Posted by Marcus Ryan

On a slightly more serious note - You guys do realize that all VTEC is is variable valve timing right??? The Z does have variable valve timing (known as CVTC), and so in a sense does have VTEC, right along with several Porsche's, Toyota's, and the MIVEC from Mitsubishi.

That said, you don't feel it "kick in" the way that you would back in the Honda exclusive days simply because it's been so optimized that it's essentially seemless.

Very well put. +1 to you sir.

Zsteve · 04-25-2010, 06:38 PM

Vtec yo!

Honda style

Vegitto-kun · 04-25-2010, 07:16 PM

I honestly don't understand the VTEC kicked in thing.

I might be too young to understand

fullmonty · 04-25-2010, 07:31 PM

Quote:

Originally Posted by Vegitto-kun

I might be too young to understand

Then you're proably to young to be using the internet. I think its more due to the fact you're from Waffle-Land, no offence. At high RPMs V-Tec kicks in giving you Extreme Power to PwN Mustangs, Camaros, Firebirds, Lambos, F-22 Raptors and the Space Shuttle. Or so I've been told, correct me if I'm wrong.

nogoodname · 04-25-2010, 08:04 PM

VTEC f0o's!!!!!

Marcus Ryan · 04-25-2010, 09:32 PM

Your just swapping camshaft profiles. A more fuel efficient one for low loads and a more aggressive one for high loads.

The point at which the car switches from low to high load cam profiles is when you feel VTEC kick in and the engine start producing more power.

tru_Asiatik · 04-25-2010, 10:45 PM

i like this guy better(saw this a while back really old but goodie)
YouTube - Leo's supra and civic with mouth!!!

Trips · 04-25-2010, 10:54 PM

Quote:

Originally Posted by tru_Asiatik

i like this guy better(really old but goodie)
YouTube - Leo's supra and civic with mouth!!!

Fixed!

z man · 04-25-2010, 11:46 PM

I was going to pass a car and as I accelerated and went into third gear, my Nissan Hemi really kicked in and I shot by him like nothing. It was kind of like the VTEC the other guy had in his Z.

Marcus Ryan · 04-26-2010, 12:16 AM

Quote:

Originally Posted by z man

I was going to pass a car and as I accelerated and went into third gear, my Nissan Hemi really kicked in and I shot by him like nothing. It was kind of like the VTEC the other guy had in his Z.

Probably more so than you think, as hemi just means hemispherical heads, which was pioneered by dodge, which your car has

U-NVmyZ? · 04-26-2010, 01:41 AM

im pretty sure it was this guy lol

YouTube - ricer g35

1slow370 · 04-26-2010, 03:51 AM

yeah vtec is just a simple bitch version of VVEL in that it just increases the lift and duration of the camshaft above a certain rpm when an oil activated solenoid locks up the rockers/lifters in the valvetrain. our cars do it gradually vtec does it all at once hence vtec kicking in. in a race the revs would be up high enough that vtec would be kicked in all the time though so the whole kicking in thing in videos is just a way to hide the horrible power curve that only exists at the very top end or that the guy is using nitrous.

Interestingly enough though some of the vtec systems like that used on the D16z6 civic si engine (before the b16/b18) actually increased the lift on only one intake valve using the difference in pressure to generate swirl in the cylinder during the intake stroke. Also hondas next generation of vtec is going to be able to provide throttleable valve just like our vvel system does only it retains a camshaft so performance modifications could still be made and the head won't be deemed non servicable upon failure. VVEL is already becoming out dated, although i'm not sure if the honda system has released the redline for the new valvetrain although i fear it will still be able to reach 9000rpm.

kannibul · 04-26-2010, 07:54 AM

Quote:

Originally Posted by 1slow370

yeah vtec is just a simple bitch version of VVEL in that it just increases the lift and duration of the camshaft above a certain rpm when an oil activated solenoid locks up the rockers/lifters in the valvetrain. our cars do it gradually vtec does it all at once hence vtec kicking in. in a race the revs would be up high enough that vtec would be kicked in all the time though so the whole kicking in thing in videos is just a way to hide the horrible power curve that only exists at the very top end or that the guy is using nitrous.

Interestingly enough though some of the vtec systems like that used on the D16z6 civic si engine (before the b16/b18) actually increased the lift on only one intake valve using the difference in pressure to generate swirl in the cylinder during the intake stroke. Also hondas next generation of vtec is going to be able to provide throttleable valve just like our vvel system does only it retains a camshaft so performance modifications could still be made and the head won't be deemed non servicable upon failure. VVEL is already becoming out dated, although i'm not sure if the honda system has released the redline for the new valvetrain although i fear it will still be able to reach 9000rpm.

I doubt Honda will make a V-6 using VTEC-II, so, no real worries.

Vegitto-kun · 04-26-2010, 08:27 AM

didn't know that.

probably has to do with me not giving a **** about cars 2 years ago

shoopajae10 · 04-26-2010, 10:31 AM

everytime someone mentions VTEC it reminds me of the movie fast N furious for some reason..... weird.

04-25-2010, 10:45 PM	#37 (permalink)
tru_Asiatik Track Member Join Date: Feb 2009 Location: so cal Posts: 793 Drives: 2009 370Z 6MT Rep Power: 270	i like this guy better(saw this a while back really old but goodie) YouTube - Leo's supra and civic with mouth!!! __________________ Stillen G3 CAIStillen CBEBerk's HFCEibach ProkitHotchkis Swaysichiba 15/20mm spacers? Oil coolerStillen PulleyStillen Headers Last edited by tru_Asiatik; 04-25-2010 at 10:54 PM.

04-26-2010, 03:51 AM	#42 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	yeah vtec is just a simple bitch version of VVEL in that it just increases the lift and duration of the camshaft above a certain rpm when an oil activated solenoid locks up the rockers/lifters in the valvetrain. our cars do it gradually vtec does it all at once hence vtec kicking in. in a race the revs would be up high enough that vtec would be kicked in all the time though so the whole kicking in thing in videos is just a way to hide the horrible power curve that only exists at the very top end or that the guy is using nitrous. Interestingly enough though some of the vtec systems like that used on the D16z6 civic si engine (before the b16/b18) actually increased the lift on only one intake valve using the difference in pressure to generate swirl in the cylinder during the intake stroke. Also hondas next generation of vtec is going to be able to provide throttleable valve just like our vvel system does only it retains a camshaft so performance modifications could still be made and the head won't be deemed non servicable upon failure. VVEL is already becoming out dated, although i'm not sure if the honda system has released the redline for the new valvetrain although i fear it will still be able to reach 9000rpm. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

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