hey yall, i'm new to the mazda game, and i was just wondering at what rpm does VVT come in? i was in the honda game for a while and i just got tired of it so i went out and bought a 04 mazda 3 last night, it's the 2.3, 5 speed with VVT now i kno when i had the honda my V-TEC came in at 5, 5 and you could hear it and feel it, but i'm not sure when it comes in on my mazda so could someone help me with that... thanks...

 

Everything has variable valve timing. Just as Mazda and Audi use Direct injection, everyone will at some point. Guess that does'nt answer your question but i felt compelled to say it.


Mazdaspeed3 ownage.

 

i stumbled upon this link exploring mazda's intake technology. it deals with variable air duct (VAD), variable length intake manifold (VLIM), variable tumble control system (VTCS), and varaible intake valve timing (cam-phasing, intake cam only) (VVT) for the mazda3, mazda6. miata, and protege.

http://www.mazda6tech.com/index.php?...4&Itemid=1

 

Could be my imaginaiton, but I've noticed a little jump around 3400 rpm as it revs up in first gear. I'm not sure but assumed that was where the VVT switched over.

 

That's not your imagination. 3-34K is where it seems to kick in the hardest. Kinda' like turbo lag.

 

mmm...from what ive read in that tech article, the vvt doesnt 'kick in' at any specific rpm.

"Mazda's engines are not quite so sophisticated. Mazda uses a static camshaft, however the shaft is attached to a cog that can advance or retard its rotation. The valves can open sooner or later, but never longer, faster, or higher. The cog is controlled by a precision oil pump, called the oil control valve (OCV). The car's computer tells the OCV how much to advance or retard the intake timing based on a number of input parameters, such as pedal pressure, engine temp, and more."

 

yea it seems that when it goes to 2 its fine 3 its getin there then 3 and a half you can hear it pretty well lol.