Variable Valve Lift vs. Variable Valve Timing

[StevieC]

 

[Whipcitywrencher]

cool two cams in one...But the timing confuses me

 

[StevieC]

Yeah!

More stuff to fail.

 

[bullwinkle]

Originally Posted By: StevieC
Yeah!

More stuff to fail.

Not unless it's a 3V modular Ford V8!

 

[gabriel9766]

malibu has VVL and VVT.

 

[anndel]

More stuff to break down.

 

[Silverado12]

Originally Posted By: bullwinkle
Originally Posted By: StevieC
Yeah!

More stuff to fail.

Not unless it's a 3V modular Ford V8!


I think some of them had cam phaser issues.

 

[StevieC]

Yeah the phasers were set to kill. As in kill the engine.

 

[UG_Passat]

Both are variable valve timing, but separated into 2 types:
1) Lift (ie VTEC)
2) Phasing (ie Toyota VVT/VVT-I)

 

[tig1]

Both of my Ford Fusions have VVT and to date no problems. However with that said, a quality oil is all the more important with VVT, as heavy varnish or sludge can adversely effect the operation of the devise.

 

[Schmoe]

Hasn't Honda been using something similar with the VTEC but adding another valve when VTEC is engaged? Didn't know that vvt was oil pressure activated.

 

[UG_Passat]

Originally Posted By: Schmoe
Hasn't Honda been using something similar with the VTEC but adding another valve when VTEC is engaged? Didn't know that vvt was oil pressure activated.


i-VTEC is VTEC with VVT (cam phasing).

there is the VTEC-E, which on the regular economy cam profile, it shut off one of the intake valves per cylinder. The performance cam profile used all of the intake valves.

 

[StevieC]

I'm waiting for VVLVVTVTEC-E Oh yeah baby!