Notices
Scion tC 1G Drivetrain & Power Engine and transmission discussions...

VTEC vs VVTL-i

Thread Tools
 
Search this Thread
 
Old 06-11-2006 | 10:12 AM
  #1  
Billsac's Avatar
Thread Starter
Junior Member
5 Year Member
 
Joined: May 2006
Posts: 15
From: Frisco, Texas
Default VTEC vs VVTL-i

I was wondering, back when I was big into wanting to just get a Type-s and go from their. I had looked and saw some VTEC controller. It said you could lower the rpms required for VTEC to engage. Doesn't the tC have that same VTEC type feature? If so would the VTEC controller work for the a tC? Or is their already something out for it?
Old 06-11-2006 | 11:02 AM
  #2  
OuterHeaven's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Mar 2005
Posts: 627
From: Plano, TX
Default

It will NOT work for the tC. The tC motor has vvt-i (not vvtl-i) so there is no 2nd cam shaft lob that engages at some certain RPM.
Old 06-11-2006 | 03:03 PM
  #3  
chrischoi's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
iTrader: (2)
 
Joined: Apr 2005
Posts: 4,375
From: Harrisburg, PA
Default

OMG! the lift.. HHAHAHAHA :ROFL:
Old 06-12-2006 | 04:34 AM
  #4  
SquallLHeart's Avatar
Senior Member

10 Year Member

5 Year Member

SoCal tC Club
SL Member
Team N.V.S.
Scinergy
Scion Evolution
 
Joined: Oct 2004
Posts: 15,699
Default

....... you do know they are two different things right?

there is a vvt-i controller supposedly out.. if you use the search you'll find plenty of topics on it...

omg.. haha.. vtec... and just because..
Old 06-12-2006 | 05:26 AM
  #5  
Luiyo_Nos's Avatar
Junior Member
5 Year Member
 
Joined: Jan 2006
Posts: 16
From: Miramar, Florida
Default

Isn't kind of the same thing? Because I have seen a lot of Corollas XRS with VVTI controllers and and those ***** pull hard when they activate... I have seem them go down the 1/4 mile 14.0 and 14.1 at 95-99+ mph back home in PR.
Old 06-12-2006 | 05:35 AM
  #6  
crackl0vesyou's Avatar
Senior Member
5 Year Member
SL Member
 
Joined: Apr 2006
Posts: 311
Default

were can u get a vvti controller ?
Old 06-12-2006 | 05:40 AM
  #7  
TimmyT's Avatar
Senior Member
10 Year Member
5 Year Member
Scion Society
SL Member
 
Joined: Feb 2005
Posts: 1,253
From: Sanger, CA
Default

.... There is a controller out. Do a search. Corolla XRS's have VVTL-I. It shares the same engine as the Celica GT-S. 2zz.
Old 06-12-2006 | 06:58 AM
  #8  
zer0's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Nov 2005
Posts: 4,613
Default

http://www.billzilla.org/vvtvtec.htm
Old 06-12-2006 | 04:15 PM
  #9  
Somnambulated's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Nov 2004
Posts: 1,787
From: Lake Forest, CA
Default

Originally Posted by TimmyT
.... There is a controller out. Do a search. Corolla XRS's have VVTL-I. It shares the same engine as the Celica GT-S. 2zz.
I was just gonna post this about the Celica GT-S. I had no idea they shared engines.
Old 06-12-2006 | 04:15 PM
  #10  
engifineer's Avatar
Senior Member
10 Year Member
5 Year Member
Scikotics
SL Member
 
Joined: Nov 2004
Posts: 9,731
From: Minneapolis, MN
Default

vvti does NOT engage at a particular rpm. It is a continuously variable system and is really nothing like VTEC or VVTi-l.

VVTi adjusts cam angle
VVTi-L adjusts lift as well (more like VTEC)
Old 06-13-2006 | 03:59 AM
  #11  
06SuperWhite_SoCal_tC's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Jan 2006
Posts: 1,761
Default

tC's Torque > Honda's lack there of
Old 06-13-2006 | 04:17 AM
  #12  
dp-_-'s Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: May 2005
Posts: 1,228
From: Irvine, CA
Default

Originally Posted by 06SuperWhite_SoCal_tC
tC's Torque > Honda's lack there of
I can attest to that....and so can the Civic Si earlier today
Old 06-13-2006 | 06:04 AM
  #13  
killerxromances's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Feb 2005
Posts: 2,808
Default

Not this crap again.

-Torque doesn't win races
- Honda builds and designs much more so in performance than toyota, especially in current specs and models.
- vvt-i is in no way comparable to vtec, the only vtec systems that come close to vvt-i are those without lift cams, such as the 1.5l vtec in the Fit. And even then they aren't very similar.
- Its virtually impossible to fully control vvt-i like you can vtec, theres no set designed rpm to indicate when vvt-i kicks in. Its constantly changing mostly on driving habbits to ensure best power and economy benefits.
- tC does NOT have vvtl-i.
- Quit bashing Honda for what they have been able to do for years overseas in circuit racing, the tC is a coupe, but not something i would even consider being part of a performance factor. Yes boost applications put down great numbers, but at what costs? Plenty of people having issues with afr's, oil leaks, loss of psi, and not to mention n/a build ups the 2az has proven to fall on its face to date. Give it up.
Old 06-13-2006 | 11:23 AM
  #14  
OuterHeaven's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Mar 2005
Posts: 627
From: Plano, TX
Default

The 2az has not been seriously modified very much. There was a race engine that with methanol made over 300 HP and that was with no boost. I do admit that some of the Honda engines are made for more power but not all are either. Also the 2az has not been seriously modified for that long. Heck even the k20 (since the 02 Civic SI at least) has been modified more then the 2az. Give the 2az time. FI is also relatively new. Give it like 2 more years and we will see how many daily driven 300+ whp tC's there will be. Then compare that to RSX's and Civic SI's. Companies are taking notice of the 2az and for a reason too. There is a lot of potential and a lot of potential market.
Old 06-13-2006 | 12:39 PM
  #15  
jj010's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Feb 2006
Posts: 141
Default

Originally Posted by OuterHeaven
The 2az has not been seriously modified very much. There was a race engine that with methanol made over 300 HP and that was with no boost. I do admit that some of the Honda engines are made for more power but not all are either. Also the 2az has not been seriously modified for that long. Heck even the k20 (since the 02 Civic SI at least) has been modified more then the 2az. Give the 2az time. FI is also relatively new. Give it like 2 more years and we will see how many daily driven 300+ whp tC's there will be. Then compare that to RSX's and Civic SI's. Companies are taking notice of the 2az and for a reason too. There is a lot of potential and a lot of potential market.
I agree
Old 06-13-2006 | 02:21 PM
  #16  
ryno379's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Nov 2005
Posts: 560
From: Western PA
Default

Originally Posted by killerxromances
Not this crap again.

-Torque doesn't win races
- Honda builds and designs much more so in performance than toyota, especially in current specs and models.
- vvt-i is in no way comparable to vtec, the only vtec systems that come close to vvt-i are those without lift cams, such as the 1.5l vtec in the Fit. And even then they aren't very similar.
- Its virtually impossible to fully control vvt-i like you can vtec, theres no set designed rpm to indicate when vvt-i kicks in. Its constantly changing mostly on driving habbits to ensure best power and economy benefits.
- tC does NOT have vvtl-i.
- Quit bashing Honda for what they have been able to do for years overseas in circuit racing, the tC is a coupe, but not something i would even consider being part of a performance factor. Yes boost applications put down great numbers, but at what costs? Plenty of people having issues with afr's, oil leaks, loss of psi, and not to mention n/a build ups the 2az has proven to fall on its face to date. Give it up.
Mentioning Honda in a tC forum is like summoning him.
Old 06-13-2006 | 03:41 PM
  #17  
TimmyT's Avatar
Senior Member
10 Year Member
5 Year Member
Scion Society
SL Member
 
Joined: Feb 2005
Posts: 1,253
From: Sanger, CA
Default

Yah. But whaddya want?
Old 06-13-2006 | 04:08 PM
  #18  
Keeshwah's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
Team ScioNRG
 
Joined: May 2006
Posts: 896
From: NH
Default

I think you have to mention Honda until Toyota comes out with a direct competitor for the Type-S and Si. Until then we need something to gauge how well our mods work in comparison to other vehicles. It just happens that the only comparable vehicles are Hondas. I suppose you could use Cobalts, Focuses, and Mazada 3s but the Hondas are better. One of the first things I wanted to learn when I got my tC was how to take some of Honda's engineering ideas and apply them to the tC. Here's a link. To me, just using boost to increase performance is kind of a lazy way out. I think it's much more impressive when you get good numbers from NA and then add boost later. But I'm also still learning (and I already know to do this would be more expensive). But I think that finding a way to make a 2AZ-GE engine would be sweet. Which happens to be an idea I got from Honda.
Old 06-13-2006 | 08:03 PM
  #19  
OuterHeaven's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Mar 2005
Posts: 627
From: Plano, TX
Default

Unfortunately there is only a couple heads for the 2az and no one really knows even if those will bolt up to our block. And the worse part is there is no G head for the 2az at least at this time. One can only dream that they would make a better flowing head for our cars. As for the available heads now I think we have the best flowing already unfortunately. If you want to learn a little more about 2az's (or also known as the "AZ" family of Toyota engines) then go here http://en.wikipedia.org/wiki/Toyota_AZ_engine.
Old 06-13-2006 | 08:32 PM
  #20  
SquallLHeart's Avatar
Senior Member

10 Year Member

5 Year Member

SoCal tC Club
SL Member
Team N.V.S.
Scinergy
Scion Evolution
 
Joined: Oct 2004
Posts: 15,699
Default

Originally Posted by ryno379
Mentioning Honda in a tC forum is like summoning him [killerxromances].
so true! so true!



All times are GMT. The time now is 09:22 PM.