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COROLLA XRS

i just bought a 2006 xrs. it's the 2ZZ-GE engine with the 6 speed. it's redline is 8200 and it's pretty tame to about 7000 then all hell breaks loose and it really comes to life. that's where the 6 speed comes into use, to keep it in these rpm ranges.

is there any info on the net as to what is happening to change things at or near this rpm area? it's gotta be more than just 'coming on the cam' . i notice a port, or something, opening on the intake box at a lower rpm, (by sound). i'd like to learn more about this engine.

Monkey wrench racing has some stuff for the 2zz-ge engine, too. sammmm

Reply to
SAMMM
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Google is your friend. Check out this site:

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and the link on the site about the VVTL-i technology. It look like the ECU sends a signal to the engine to change the cam profile at a certain RPM for more performance.

Reply to
Ray O

So, it's not the old TViS from the 4A-GE...

Reply to
Hachiroku

Reply to
Ray O

TViS? you lose me on that, do you mean an earlier model of engine? sam

Reply to
SAMMM

Some early twin cam 4AGE Corolla engines had the Toyota Variable Induction System. Basically, there were 2 sets of intake runners with different diameters. At lower RPM, air entered the engine through the narrower intake runner so that it would enter at a higher velocity and mix with the fuel more efficiently. At higher RPM, air entered through the secondary runners to improve breathing.

Reply to
Ray O

Worked just fine on my GT-S! 120HP from a 1.6L 4-banger? And in the Toyota Atlantic series they push them to 240HP!

Reply to
Hachiroku

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