VVT LQ1?

[sspeedstreet]

So what would it take to adapt a VVT system to the 3.4 DOHC? Maybe just the exhaust cams to dial from straight up to a 13*+ retard. It could even be RPM driven (my mental picture of giant flyweights spinning on the front of the motor probably isn't practical).

Any thoughts?

[Dave96z34]

VVT is hydraulic
Getting pressure to the cam is the hard part and you do the intake cam not the exhaust.

Not worth the efort. You gain 40 hp but it needs to run 0 deg till 6k then change 10 deg and your revlimit is 7 so its pointless.

[Dave96z34]

http://www.autozine.org/technical_school/engine/vvt_1.htm

thats a good site to lern from

[sspeedstreet]

http://www.autozine.org/technical_sc...gine/vvt_1.htm
thats a good site to learn from

Thanks for the link, I learned quite a bit.

I quote:

"Cam-Phasing VVT

Cam-phasing VVT is the simplest, cheapest and most commonly used mechanism at this moment. However, its performance gain is also the least.

Basically, it varies the valve timing by shifting the phase angle of camshafts. For example, at high speed, the inlet camshaft will be rotated in advance by 30° so to enable earlier intake. This movement is controlled by engine management system according to need, and actuated by hydraulic valve gears.

Simpler cam-phasing VVT has just 2 or 3 fixed shift angle settings to choose from, such as either 0° or 30°. Better system has continuous variable shifting, say, any arbitrary value between 0° and 30°, depending on RPM. Obviously this provides the most suitable valve timing at any speed, thus greatly enhancing engine flexibility. Moreover, the transition is so smooth that it is hardly noticeable."

Interesting. More to ponder.