STUPID QUESTION - Toyota Nation Forum : Toyota Car and Truck Forums

88corollaGTS · 04-21-2002, 02:57 AM

What does T-VIS stand for and what does it do?? :grin: thanks for the info :grin:

AE86dorifto · 04-21-2002, 09:30 AM

Toyota Variable Induction System. On the large port 4ages, there are butterfly valves (similiar to the throttle body) in between the intake manifold and the head. when closed at low RPM, they let a small amopunt of air in to keep the velocity high for low end torque. At high RPM, they open up so large amounts of air can get in to feed the motor's need to make all that good high end power.

fatredcircle · 04-21-2002, 11:35 AM

tvis = waste of time

project trueno · 04-21-2002, 11:50 AM

Quote:

On 2002-04-21 12:35, fatredcircle wrote:
tvis = waste of time

so which AE92's have TVIS? 1988-1989, or 1990-1991?

88corollaGTS · 04-21-2002, 02:49 PM

I am not sure what years have it but my 88 GTS does. When I was under the hood the other day my friend asked what it meant.. :grin:

AE86dorifto · 04-21-2002, 06:39 PM

here in the US, they all have it. the only cars we got here with out tvis are the GEO prism GSi's - red top small port high comp yummy.

bondobondo · 04-21-2002, 06:42 PM

anything mid 89 and up corolla had the high comp engine.

and FYI TVIS was not a waste of time, it was used in all toyota engines as a comprimise between low end torque and high end high flow characteristics.

my TVIS engine for some reason is faster than my friends non tvis, same mods, same car.

88corollaGTS · 04-22-2002, 11:58 AM

Thank you andrew, I knew I could count on you for an answer. :grin:

fatredcircle · 04-22-2002, 01:11 PM

tvis is a waste of time, who cares about low end andrew, you want power, just rev it up higher.. and then stay there. =P

Rolla Pat · 04-22-2002, 02:09 PM

Ahhh, there's more than meets the eye with TVIS. Think of it. Bigger cams will run more smoothly with a TVIS engine on idle and low rpm than, let's say a red top.

fatredcircle · 04-22-2002, 03:06 PM

whatever, i'll leave u guys to ur own theories

goodcookiedrift · 04-22-2002, 07:15 PM

bigger cams and tvis is like mixing Isrealites and Palestinians in Bethlehem.

nick

88corollaGTS · 04-23-2002, 02:49 AM

Quote:

On 2002-04-22 20:15, goodcookiedrift wrote:
bigger cams and tvis is like mixing Isrealites and Palestinians in Bethlehem.

nick

This is funny,

Rolla Pat · 04-23-2002, 10:09 AM

OH YOU!

toyotaspeed90 · 04-30-2002, 07:43 PM

um, why say you don't want low end torque?! what do you think gets you off the line? torque is just as important as HP..... if you don't have enough torque, you'll be getting off the line really slowly.....