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8ballsin · 02-27-2008, 03:51 PM

what is vtec and what exactly is the difference than non vtec

INJEN78 · 02-27-2008, 05:01 PM

are you serious?!?!?

8ballsin · 02-27-2008, 05:04 PM

yes i just got a 90 crx and to give you little background of my i am a redneck that only drives 4x4's im here in germany and cannot afford the gas so i bought a honda

90_EF_Hatch · 02-27-2008, 05:12 PM

VTEC - Wikipedia, the free encyclopedia

efhondakid · 02-27-2008, 07:15 PM

Quote:

Originally Posted by INJEN78

are you serious?!?!?

Easy now, you were a noob once too.

INJEN78 · 02-27-2008, 08:02 PM

dude all you have to do is go to a search bar and type in "what is vtec" or "how does vtec work" i guarantee there will be millions of sites that you can read...vtec is probably the most searched word in the world

Mugen Accord · 02-27-2008, 08:06 PM

Here is a basic definition of VTEC:

In the regular four-stroke automobile engine, the intake and exhaust valves are actuated by lobes on a camshaft. The shape of the lobes determines the timing, lift and duration of each valve. Timing refers to an angle measurement of when a valve is opened or closed with respect to the piston position (TDC or BDC). Lift refers to how much the valve is opened. Duration refers to how long the valve is kept open. Due to the behavior of the working fluid (air and fuel mixture) before and after combustion, which have physical limitations on their flow, as well as their interaction with the ignition spark, the optimal valve timing, lift and duration settings under low RPM engine operations are very different from those under high RPM. Optimal low RPM valve timing, lift and duration settings would result in insufficient filling of the cylinder with fuel and air at high RPM, thus greatly limiting engine power output. Conversely, optimal high RPM valve timing, lift and duration settings would result in very rough low RPM operation and difficult idling. The ideal engine would have fully variable valve timing, lift and duration, in which the valves would always open at exactly the right point, lift high enough and stay open just the right amount of time for the engine speed in use.
VTEC was initially designed to increase the power output of an engine to 100 ps/liter or more while maintaining practicality for use in mass production vehicles. Some later variations of the system were designed solely to provide improvements in fuel efficiency, or increased power output as well as improved fuel efficiency.
In practice, a fully variable valve timing engine is difficult to design and implement.
The opposite approach to variable timing is to produce a camshaft which is better suited to high RPM operation. This approach means that the vehicle will run very poorly at low RPM (where most automobiles spend much of their time) and much better at high RPM. VTEC is the result of an effort to marry high RPM performance with low RPM stability.
Additionally, Japan has a tax on engine displacement, requiring Japanese auto manufacturers to make higher-performing engines with lower displacement. In cars such as the Toyota Supra and Nissan 300ZX, this was accomplished with a turbocharger. In the case of the Mazda RX-7 and RX-8, a rotary engine was used. VTEC serves as yet another method to derive very high specific output from lower displacement motors.

D15Beater · 02-27-2008, 08:45 PM

Quote:

Originally Posted by 8ballsin

what is vtec and what exactly is the difference than non vtec

|Chaz| · 02-27-2008, 09:05 PM

That was a really good video D15beater. Very easy to understand, if it doesn't help the guy that created the thread, I don't know what will.

whiterabbit06 · 02-27-2008, 09:40 PM

Quote:

Originally Posted by INJEN78

dude all you have to do is go to a search bar and type in "what is vtec" or "how does vtec work" i guarantee there will be millions of sites that you can read...vtec is probably the most searched word in the world

Most Searched New York Times Words and Phrases - The New York Times

INJEN78 · 02-27-2008, 10:06 PM

Quote:

Originally Posted by whiterabbit06

Most Searched New York Times Words and Phrases - The New York Times

ok so not the most searched but..easy as hell to find definition to

LS_VTEC · 02-28-2008, 03:24 AM

Variable valve timing and electronic lift control

awptickes · 02-28-2008, 07:54 AM

Quote:

Originally Posted by 8ballsin

yes i just got a 90 crx and to give you little background of my i am a redneck that only drives 4x4's im here in germany and cannot afford the gas so i bought a honda

Where in germany are you?

8ballsin · 02-28-2008, 09:30 AM

Quote:

Originally Posted by awptickes

Where in germany are you?

I am in Heidelberg

khrisb · 02-28-2008, 07:09 PM

i'm pretty sure I've read somewhere other than wikipedia that honda didn't invent variable valve timing

D15Beater · 02-28-2008, 07:20 PM

Quote:

Originally Posted by khrisb

i'm pretty sure I've read somewhere other than wikipedia that honda didn't invent variable valve timing

Corliss Orville Burandt - Wikipedia, the free encyclopedia

Celerity · 02-28-2008, 07:43 PM

Aw Pee Tickles and Eight Balls In are together in Germany.

GREAT.

Mugen Accord · 02-29-2008, 04:39 PM

I Liked The Video D15Beater. Also Checked Out The Turbo'd VTEC Vid As Well

phyregod · 02-29-2008, 04:52 PM

It is no longer VTEC.

Its "mAd VEETACH off the HiZzY yO!

damn noobs.

INJEN78 · 02-29-2008, 05:35 PM

Quote:

Originally Posted by phyregod

It is no longer VTEC.

Its "mAd VEETACH off the HiZzY yO!

damn noobs.

LIES!!!

its m@d TyT3 jDm Vt3c s0n!1!1!1!

SlushboxTeggy · 02-29-2008, 08:29 PM

Quote:

Originally Posted by whiterabbit06

Most Searched New York Times Words and Phrases - The New York Times

There is no way those are the most searched words. They did get one right... Bush. And tit, ass, fuck. End.

Koop · 03-01-2008, 05:57 PM

also you will FEEL the v tec kick in. I just figured out today that i had v tec and now i can notice it clearly!

02-27-2008, 03:51 PM	#1
8ballsin Member Join Date: Oct 2007 Location: Heidelberg,Germany Posts: 95 iTrader: 0 / 0% Ride: 1990 Honda CRX Si Rep Power: 5	what is VTEC what is vtec and what exactly is the difference than non vtec

02-27-2008, 08:06 PM	#7
Mugen Accord West West Y'all Join Date: Dec 2007 Location: Downey, Ca/ Lancaster, Ca/ Alice, Tx Age: 21 Posts: 81 iTrader: 0 / 0% Ride: '88 Honda Accord LX, Rep Power: 5	Here is a basic definition of VTEC: In the regular four-stroke automobile engine, the intake and exhaust valves are actuated by lobes on a camshaft. The shape of the lobes determines the timing, lift and duration of each valve. Timing refers to an angle measurement of when a valve is opened or closed with respect to the piston position (TDC or BDC). Lift refers to how much the valve is opened. Duration refers to how long the valve is kept open. Due to the behavior of the working fluid (air and fuel mixture) before and after combustion, which have physical limitations on their flow, as well as their interaction with the ignition spark, the optimal valve timing, lift and duration settings under low RPM engine operations are very different from those under high RPM. Optimal low RPM valve timing, lift and duration settings would result in insufficient filling of the cylinder with fuel and air at high RPM, thus greatly limiting engine power output. Conversely, optimal high RPM valve timing, lift and duration settings would result in very rough low RPM operation and difficult idling. The ideal engine would have fully variable valve timing, lift and duration, in which the valves would always open at exactly the right point, lift high enough and stay open just the right amount of time for the engine speed in use. VTEC was initially designed to increase the power output of an engine to 100 ps/liter or more while maintaining practicality for use in mass production vehicles. Some later variations of the system were designed solely to provide improvements in fuel efficiency, or increased power output as well as improved fuel efficiency. In practice, a fully variable valve timing engine is difficult to design and implement. The opposite approach to variable timing is to produce a camshaft which is better suited to high RPM operation. This approach means that the vehicle will run very poorly at low RPM (where most automobiles spend much of their time) and much better at high RPM. VTEC is the result of an effort to marry high RPM performance with low RPM stability. Additionally, Japan has a tax on engine displacement, requiring Japanese auto manufacturers to make higher-performing engines with lower displacement. In cars such as the Toyota Supra and Nissan 300ZX, this was accomplished with a turbocharger. In the case of the Mazda RX-7 and RX-8, a rotary engine was used. VTEC serves as yet another method to derive very high specific output from lower displacement motors. __________________ 1988 Honda Accord LX: Bone Stock My Ex's: 1992 Saturn SL2- Blew Up 1995 Honda Prelude VTEC: JDM H22A- Sold

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02-27-2008, 05:01 PM	#2
INJEN78 ¿GANGSTA GREMLIN? Join Date: Oct 2007 Location: CT(860) VT(802) Age: 21 Posts: 8,255 iTrader: 7 / 100% Ride: 91 CRX si Rep Power: 241	are you serious?!?!?

02-27-2008, 05:04 PM	#3
8ballsin Member Join Date: Oct 2007 Location: Heidelberg,Germany Posts: 95 iTrader: 0 / 0% Ride: 1990 Honda CRX Si Rep Power: 5	yes i just got a 90 crx and to give you little background of my i am a redneck that only drives 4x4's im here in germany and cannot afford the gas so i bought a honda

02-27-2008, 05:12 PM	#4
90_EF_Hatch Senior Member Join Date: Oct 2007 Location: Garland Texas Age: 19 Posts: 1,204 iTrader: 0 / 0% Ride: 93 BMW 325i sedan, 93 Teggy four door Rep Power: 38	VTEC - Wikipedia, the free encyclopedia

02-27-2008, 08:02 PM	#6
INJEN78 ¿GANGSTA GREMLIN? Join Date: Oct 2007 Location: CT(860) VT(802) Age: 21 Posts: 8,255 iTrader: 7 / 100% Ride: 91 CRX si Rep Power: 241	dude all you have to do is go to a search bar and type in "what is vtec" or "how does vtec work" i guarantee there will be millions of sites that you can read...vtec is probably the most searched word in the world

02-27-2008, 09:05 PM	#9
\|Chaz\| Senior Member Join Date: Jul 2007 Location: Washington Age: 20 Posts: 3,304 iTrader: 0 / 0% Ride: 92' EG Sedan Rep Power: 179	That was a really good video D15beater. Very easy to understand, if it doesn't help the guy that created the thread, I don't know what will.

02-28-2008, 03:24 AM	#12
LS_VTEC you get the BRAKE Join Date: Dec 2007 Location: NJ Posts: 2,619 iTrader: 0 / 0% Ride: all motor eg6 Rep Power: 44	Variable valve timing and electronic lift control

02-28-2008, 07:09 PM	#15
khrisb ****** Join Date: Apr 2003 Location: Wilmington, NC Age: 25 Posts: 1,807 iTrader: 0 / 0% Ride: nothing Rep Power: 38	i'm pretty sure I've read somewhere other than wikipedia that honda didn't invent variable valve timing

02-28-2008, 07:43 PM	#17
Celerity Cogito Ergo Sum Steampunk Join Date: Sep 2003 Location: ¿umop apisdn Age: 33 Posts: 19,483 iTrader: 2 / 100% Ride: 1972 Plymouth Satellite, 1988 Jeep Wrangler Blog Entries: 7 Rep Power: 348	Aw Pee Tickles and Eight Balls In are together in Germany. GREAT.

02-29-2008, 04:39 PM	#18
Mugen Accord West West Y'all Join Date: Dec 2007 Location: Downey, Ca/ Lancaster, Ca/ Alice, Tx Age: 21 Posts: 81 iTrader: 0 / 0% Ride: '88 Honda Accord LX, Rep Power: 5	I Liked The Video D15Beater. Also Checked Out The Turbo'd VTEC Vid As Well

02-29-2008, 04:52 PM	#19
phyregod !!YTINASNI Join Date: Jun 2005 Location: Central Texas Age: 30 Posts: 9,062 iTrader: 0 / 0% Ride: '06 Element , '07 CBR 1000rr, '91 CRX, '98 jeep GC 4x4 Blog Entries: 2 Rep Power: 464	It is no longer VTEC. Its "mAd VEETACH off the HiZzY yO! damn noobs.

03-01-2008, 05:57 PM	#22
Koop •°o.O KOOP™ Join Date: Feb 2008 Location: cowtown Age: 26 Posts: 156 iTrader: 0 / 0% Ride: 98' D-Series SI (CAN) Rep Power: 0	also you will FEEL the v tec kick in. I just figured out today that i had v tec and now i can notice it clearly!

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what is VTEC