A lot of car companies have their variation of VTEC now. When VTEC was first introduced on the Honda/Acura NSX it was considered the most innovative automotive feats ever. And to think so many people make fun of it although half of them have no idea just smart and clever the concept truly is.

VTEC is used by a lot of automotive manufactures now just under different names so they don't get the fuck sued out of them (VVTL and VVTL-i from Toyota, MIVEC...I think thats the right acronym, from Mitsubishi, plus the technology in GM and Ford cars, although they don't have the cool acronyms like everyone else).

 

just a little correction, vtec was first introduced in a B16A in Japan in 1989.

 

Meh, close enough.

 

is that Meh, supposed to be like dave chapelle in killing them softly?

cop: do you know why I pulled you over?
dave: Meh, cause Im black see. Meh!!

cop:stop talking like that!!
dave: stop talking like what copper? thats how I talk see MEEEEEEEHHH!!!

HAHAHA!!!

 

Dave Chappelle=comical genius of our time.

If you're in college and you don't watch Dave Chappelle, you should die.

Why talk about variable valve timing when you can talk about the Chappelle Show?

 

simplified this is what happens.

each cam has 3 lobes...2 small lobes which are the low rpm lobes that act on the valvetrain at lower RPMs. the smaller lift/duration cams work good at making power under less airflow...when you hit a certain RPM these lobes start to become less and less effective. at this point the ECU checks for a certain set of parameters and if all are met (engine temp, engine speed, RPM, etc) then VTEC will engage. oil pressure is diverted to pins in the rocker arms that lock a normally disengaged arm and allow a much larger lobe to press against it and push on the valvetrain (keeping the smaller lobes from acting against them). this allows the valves to stay open longer and lift higher (better for high RPM power). on DOHC VTEC motors this happens on both cams. it's like instantaneously switching cams from a mild cam to a very aggressive one. on a SOHC VTEC motor only the intake cam lobes are affected. there is a version of the SOHC VTEC also, where one valve is designed to open slightly more than the other to swirl air coming into the cylinder for a cleaner and more efficient burn. this is called VTEC-e.

 

Redline starts at 7200, or the rev LIMITER is 7200.i believe mark meant the redline starts at 6800

 

if it aint a type R then it aint a tight car...

 

the new si's are i vtec right?

 

Yeah they have i-VTEC, meaning that both intake and exhaust valves will change lift. I always thought that Honda was releasing the Civic Type R in the states, although I have yet to see one on at dealerships.