Limits of a 4th gen 3sgte bottom half Options

[teamchancery]

I have seen a dyno of a 4th gen 3s (caldina)making 400whp on stock internals.However with these things you never know how long these engines last for.My question from either personal experiemce or other persons experience .Whats the most power made on a stock bottom half 4 gen to be driven around daily without breaking
I have a 4th gen and changed the pistons cause orginals cracked but didnt have the extra cash to buy forged rods.So i got some JE pistons but the 4th gen rods look so much smaller than the older mr2 and celica rods that with my new build i am deciding to build it to around 350whp and leave it there cause the rods got me nervous

[Dragondog]

sry what is -TVIS on gen2, no TVIS on gen 3 ill look it up tho if u cant explain np but the reason i sak bout the diff. in gens is cuz 3rd gen clip is hard to find and pricy when found and 2nd gen is easy and cheap ......with what i already plan to change on it anyways im wonderin whats a better investment

-Map based ECU on gen3 (speed-density) vs MAF
-540cc vs 440 cc injectors
-turbo (CT20b vs CT26)
-WTA intercooler vs air-to-air intercooler
-TVIS on gen2, no TVIS on gen 3

if i get a stand alone ecu will that work better for gen2
can 540cc r better be put on the gen 2
my plans is to get bigger turbo kit anyway
wich comes wit own inercoolor
tvis? idk ill look it up.....

so far i like what i here.....so its best to get mr2T clip not st205 for my project

ok got it.......Toyota Variable Induction System, or T-VIS, is a variable intake system designed by Toyota.

It improves the low-end torque of high-performance, small displacement four-stroke engines by changing the geometry of the intake manifold according to the engine rotation speed. The system uses two separate intake runners per cylinder, one being equipped with a butterfly valve that can either open or close the runner. All valves are attached to a common shaft which is rotated by a vacuum actuator outside the manifold.

The engine control unit allows vacuum into the actuator by powering a solenoid valve when the engine rotation speed is below 4200 RPM. Above this engine speed vacuum is cut off and a spring inside the actuator causes the butterfly valve to fully open. The theory behind the system is that in the lower engine speed band, the speed of the intake air will be increased because the intake runner cross section per cylinder is smaller. However, when engine speed increases, the second runner is opened, decreasing airflow speed, but increasing the airflow volume, better matching the engine's airflow needs at higher RPM. With modified engines (more flow) you may want to have your T-VIS open earlier than stock because it begins to restrict the airflow at a lower RPM, since the airflow per RPM is greater with upgraded turbochargers, intake, and exhaust systems. There is now a T-VIS controller on the market: T-VIS controller

http://en.wikipedia.org/wiki/Tvis

so whar r the pro and cons and how can i eliminate the cons of the tvis

This post has been edited by Dragondog: Mar 13, 2009 - 6:36 PM