honda vtech and toyota question

[shootmymime]

i had a question about my dad 03 with a V8,


as everyone know honda has vtec, which at high rpm changed the timing on the engine and cams so it will create more power due to high RPM... does the 4 runner have this? like the tundra i-force ? i cant remember what the 4runner says on the engine but thats what i am talking about.

EDIT
i did a little bit of searching, and i remembered alot, what i was talking about is called VVT (variable valve timing) does the 4runner have it? and what RPM does the engine need for it to kick in?

 

[Benjamin Choi]

none of the 4runner engines have the lift like VTEC... you can only find that i think in the celica gt-s

 

[MikesToy]

i disagree from the post above.
Some 4runners do have the VVT-i (Variable Valve Timing with Inteligence).

 

[Benjamin Choi]

i disagree from the post above.
Some 4runners do have the VVT-i (Variable Valve Timing with Inteligence).

what you were hoping your 4runner was some special F1 derived Toyota made engine race car power?

here's a holiday fact check gift for ya bud, understand your 4runner is a nice commuter utility car for your mom, sister, grandfather, dad, son, neighbor whatever to haul groceries, people, etc.

VVTL-i
In 1998, Toyota started offering a new technology, VVTL-i, which can alter valve lift (and duration) as well as valve timing. In the case of the 16 valve 2ZZ-GE, the engine has 2 camshafts, one operating intake valves and one operating exhaust valves. Each camshaft has two lobes per cylinder, one low rpm lobe and one high rpm, high lift, long duration lobe. Each cylinder has two intake valves and two exhaust valves. Each set of two valves are controlled by one rocker arm, which is operated by the camshaft. Each rocker arm has a slipper follower mounted to the rocker arm with a spring, allowing the slipper follower to move up and down with the high lobe without affecting the rocker arm. When the engine is operating below 6000-7000rpm (dependent on year, car, and ECU installed), the low lobe is operating the rocker arm and thus the valves. When the engine is operating above the lift engagement point, the ECU activates an oil pressure switch which pushes a sliding pin under the slipper follower on each rocker arm. This in effect, switches to the high lobe causing high lift and longer duration.


Toyota has now ceased production of its VVTL-i engines for most markets, because the engine does not meet Euro IV specifications for emissions. As a result, this engine has been discontinued on some Toyota models, including that of the Corolla T-Sport (Europe), Corolla Sportivo (Australia), Celica, Corolla XRS, Toyota Matrix XRS, and the Pontiac Vibe GT, all of which had the 2ZZ-GE engine fitted.

 

[peter78]

none of the 4runner engines have the lift like VTEC... you can only find that i think in the celica gt-s

Say what???

Most cars now have variable timing. On the Toyota it is called VVT-I. On the 03 only the V6 had it. The V8 did not have it then. Actually, the V6 had 10 more HP than the V8, because of the VVT-I. Of course the torque is much higher in the V8. So your Dad's car does not have variable timing.

The V8 got VVT-I around 05 or 06. Someone else can chime in on this. I think right now all Toyota engines have the VVT-I.

By the way, your Dad's engine is the i-force engine, but it has nothing to do with variable timing.

Here is a picture of my 04 V6 engine, as you can see by the big ad like display on the engine, it has VVT-I.

 

[Benjamin Choi]

Say what???
Most cars now have variable timing. On the Toyota it is called VVT-I. On the 03 only the V6 had it. The V8 did not have it then. Actually, the V6 had 10 more HP than the V8, because of the VVT-I. Of course the torque is much higher in the V8. So your Dad's car does not have variable timing.

The V8 got VVT-I around 05 or 06. Someone else can chime in on this. I think right now all Toyota engine have the VVT-I.

By the way, your Dad's engine is the i-force engine, but it has nothing to do with variable timing.

Here is a picture of my 04 V6 engine, asyou can see by the big ad like display on the engine, it has VVT-I.

Slow your roll fellas.

the original poster is clearly talking about that vtec sensation when the cam switches over in some honda vtec engines. i used to own an s2000 when it first came out and also own a porsche that has this thing called variocam plus which causes the same sensation just a little less aggressive than the switch over in the F20C honda engine.

our toyota's do NOT HAVE LIFT. It's not VVTL-I, it's VVT-I. it's nothing special. lots of manufacturers have this technology down pat like abs, fuel injection of past decades of automotive innovations.

 

[shootmymime]

yes you all have good replies thanks

 

[peter78]

Variable Valve Timing with intelligence (VVT-i)
This system selects the ideal intake and exhaust valve overlap under all engine operating conditions. VVT-i virtually eliminates the traditional compromises between low-end torque and high-rpm horsepower. It also helps enhance fuel economy and reduces emissions so effectively that it eliminates the need for the exhaust gas recirculation (EGR) emissions device.


Maybe this helps what variable valve timing is.

 

[MikesToy]

what you were hoping your 4runner was some special F1 derived Toyota made engine race car power?

here's a holiday fact check gift for ya bud, understand your 4runner is a nice commuter utility car for your mom, sister, grandfather, dad, son, neighbor whatever to haul groceries, people, etc.

Mod edit: Watch your mouth. First and final warning MikesToy. Do not resort to personal attacks.

 

[shootmymime]

quote:
Originally posted by Benjamin Choi
what you were hoping your 4runner was some special F1 derived Toyota made engine race car power?

here's a holiday fact check gift for ya bud, understand your 4runner is a nice commuter utility car for your mom, sister, grandfather, dad, son, neighbor whatever to haul groceries, people, etc.



FOCK YOU!

done even start with me about f1 and indy race cars, my uncle is the pit manager for a f1 team in denver.. idk how many races, builds, cars i hvae seen! but its cool stuff!

 

[endosj3]

Yeah agreed with most of the above...The last motor Toyota came out with that was similar to VTEC is the GT-S motor. Had that as my last car and to be honest I liked the VVTL-i better than my Civic w/ VTEC...Seemed to pull better in the high RPMs

Only problem was that even if you took it into a little bit further than redline the drivetrain was built stupidly because it would drop you out of lift when you shifted to the next gear. I would lose so much power even when doing a good 1-2 shift just because it dropped out of the powerband and I had to wait for it to come back up. And I was the type of person that never took my foot off the gas when I shifted so it wasn't a matter of timing.

 

[Atlanta_man]

Of course the VVT-I is far superior to the oil pressure powered binary follower / lobe selector in the Honda vtec.

It's continuous and has a large range of operation.

go here and view the files or hit download:

v8 link

 

[Uneek]

The 2003 and 04 V8 did not have VVT-i. VVT-i on the V8 appeared in the 2005 MY.

VTEC altered the lift for the valves, as mentioned, VVTL-i is the most similar to it.

iVTEC is similar to VVT-i. VVT-i continously adjusts valve timing throughout the RPM range for the ideal balance between power and fuel economy.

 

[Benjamin Choi]

uneek got it right.

as for some of the others, saying toyota's vvti or vvtli is better than honda's or bmw's or porsche's or whatever is pure diatribe and stated out of 4runner fan boism.

honda makes some of the best engines in the world. period. end of story. so does toyota so stating one is better than the other speaks to ownership insecurity more than anything else.

 

[Benjamin Choi]

Of course the VVT-I is far superior to the oil pressure powered binary follower / lobe selector in the Honda vtec.

It's continuous and has a large range of operation.

go here and view the files or hit download:

v8 link

case in point, you have no idea what you're talking about.

 

[shootmymime]

man i didnt know this would be such a hot topic! but GREAT!

 

[endosj3]

uneek got it right.

as for some of the others, saying toyota's vvti or vvtli is better than honda's or bmw's or porsche's or whatever is pure diatribe and stated out of 4runner fan boism.

honda makes some of the best engines in the world. period. end of story. so does toyota so stating one is better than the other speaks to ownership insecurity more than anything else.

I've had both of the japanese giants versions of their variable valve timing with lift so its not speaking out of ignorance. I'm just stating that from a factory tune, the VVTL-i pulls better in the higher RPMs. Driving around town the GT-S was never a speed demon or anything but once you got it above 6k you got pushed back into the seat by the extra power. I also had a VTEC civic and have driven numerous times an S2000...now the S2000 is tremendously better built than the GT-S but I'm still going to admit that once it hits lift or VTEC the GT-S pulls harder in comparison to the power it was getting before it hit the lift point.

I've always loved both honda and toyota and their luxury counterparts but IMO I'd go with a Toyota or Lexus because they have my favorite Dyno Queen, 2JZ-GTE SUPRA!!!