This might help....
A good website to read on a boring day.
Just want to know if there is any difference between the JDM 4AGE nad ADM 4AGE Heads? Also, are the 4AGZE heads difference at all? Do all of the have T-VIS? Can someone explain exactually what T-VIS is please?
Cheers
This might help....
A good website to read on a boring day.
hmm i dont think u posted a link or my cop extremely slow
Your comps slow....
... just kidding, my bad.... all fixed.
The TVIS plate sits in-between the intake manifold and the head, the theory behind it is that only four intake runners are open at low revs to keep the intake velocity up. Somwhere around 4400RPM - 4500 RPM the ecu triggers a vacuum switching valve to open up which in turn causes the engine vacuum to open the other 4 intake runners in the TVIS plate. This way the engine is getting more air as its under a greater load, This helps the engine keep its low down torque.
The 100KW (smallport) motors don't have the TVIS plate, as the "small ports" are what helps keep its intake velocity up.
Why hesitate when you can accelerate???
Yellow 1984 KE70 Corolla, 1.3L 4K-C, Tighe 104 Cam, Electronic Dizzy, Dellorto DHLA40s,
4-1 Hurricane Extractors, 2" Exhaust System, 5 Speed, Factory Mags, Towbar, 33 RWKW Last dyno.
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