VVT-i engagement??? - Toyota Yaris Forums

drifto · 04-23-2007, 11:49 PM

anyone here know when our variable valve timing kicks in. im curious as to what rpm/load point it engages the shift. any spec sheets etc. im still breaking my car in so i havnt hit the high rpms yet. thanks

spkrman · 04-24-2007, 12:10 AM

its always there :)

eTiMaGo · 04-24-2007, 04:47 AM

yup, it's a continuously variable system. You might be confusing it with VVTL-i, which has a definite engagement point. Confusing stuff, but not as much as Honda which lumps it all under the name VTEC

Black Yaris · 04-24-2007, 05:08 AM

Silly Honda guys

Yaris Revenge · 04-24-2007, 09:08 AM

Yeah, standard VVT has a specific activation point. With VVT-i, the "i" stands for "intelligent", which means it keeps the valves timed properly throughout the entire rpm range.

~YR

eTiMaGo · 04-24-2007, 11:08 AM

Some good reading for the technically-minded...

VVT-i / VVTL-i
VTEC

As you can see, Honda has the bad habit of clumping everything they do to valves under the VTEC/i-VTEC banner, while Toyota has four distinct systems, the discontinued VVT, the economy-oriented VVT-i, the more advanced Dual VVT-i, and the performance oriented VVTL-i.

drifto · 04-24-2007, 08:14 PM

thanks

good info. i was hoping it was a progressive type. honda's vtec is

04-23-2007, 11:49 PM	#1
drifto View User's Garage Drives: 07 5spd Yaris LB Join Date: Apr 2007 Location: NY/NJ Posts: 251	VVT-i engagement??? anyone here know when our variable valve timing kicks in. im curious as to what rpm/load point it engages the shift. any spec sheets etc. im still breaking my car in so i havnt hit the high rpms yet. thanks __________________ Going from drift to grip... 07 Yaris LB 5spd AE86 Corolla GTS 5spd http://microimage.ning.com/ http://www.microimageonline.com/store.html

04-24-2007, 04:47 AM	#3
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	yup, it's a continuously variable system. You might be confusing it with VVTL-i, which has a definite engagement point. Confusing stuff, but not as much as Honda which lumps it all under the name VTEC __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

04-24-2007, 05:08 AM	#4
Black Yaris der Zeck View User's Garage Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006 Location: Toledo, OH Posts: 5,231	Silly Honda guys __________________

04-24-2007, 09:08 AM	#5
Yaris Revenge GIGA...DRILL...BREAKER!!! Drives: Lagann. ;P Join Date: Feb 2006 Location: My own little world. Posts: 717	Yeah, standard VVT has a specific activation point. With VVT-i, the "i" stands for "intelligent", which means it keeps the valves timed properly throughout the entire rpm range. ~YR __________________ Be polite. Be professional. But have a plan to kill everyone you meet.

04-24-2007, 11:08 AM	#6
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	Some good reading for the technically-minded... VVT-i / VVTL-i VTEC As you can see, Honda has the bad habit of clumping everything they do to valves under the VTEC/i-VTEC banner, while Toyota has four distinct systems, the discontinued VVT, the economy-oriented VVT-i, the more advanced Dual VVT-i, and the performance oriented VVTL-i. __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

04-24-2007, 12:10 AM	#2
spkrman Banned View User's Garage Drives: 1 Join Date: Nov 2006 Location: 2 Posts: 1,476	its always there :)

04-24-2007, 08:14 PM	#7
drifto View User's Garage Drives: 07 5spd Yaris LB Join Date: Apr 2007 Location: NY/NJ Posts: 251	thanks good info. i was hoping it was a progressive type. honda's vtec is __________________ Going from drift to grip... 07 Yaris LB 5spd AE86 Corolla GTS 5spd http://microimage.ning.com/ http://www.microimageonline.com/store.html