VTEC on a Chevy?

[Hokiefyd]

GM has introduced "Intake Valve Lift Control" on their new 2.5L Gen III Ecotec 4-cylinder. Here is a great description and video of how it works:
Press release on media.gm.com

So now Malibu, Impala, and ATS owners can all say, "v-teck just kicked in, yo!"

 

[Drew99GT]

Originally Posted By: Hokiefyd


So now Malibu, Impala, and ATS owners can all say, "v-teck just kicked in, yo!"

 

[SwampSurvivor]

I hit VTEC (or was it VTAK?) in the urgent care the other day.

Getting up and having one of the sensors fall off of your chest is a good way to get the whole team in your room.

 

[JHZR2]

Wow, GM didnt have variable valve stuff in their engines yet? Im a bit surprised at that. I dont have it in my 2.0L low inertia LP turbo saab, but I was under the impression that all that showed up with the DI turbo unit like seen in the Regal and others.

 

[Hokiefyd]

GM has had variable valve TIMING, also generally known as cam phasing. But this is their first implementation (that I know of) of variable valve LIFT (and by nature, also timing and duration and overlap and all that other good stuff that can only come with using a second cam lobe).

 

[A_Harman]

I know a little about that...

 

[Eddie]

Let us up that the engineering tranfers to the assembly process without a major safu.

 

[mechtech2]

I love that last paragraph... like nobody ever heard of Chevrolet!

 

[wirelessF]

No pushrods already!?

 

[sciphi]

CheVTEC, yo!

JHRZ2, GM's had dual VVT on their turbo engines for a while.

 

[rjundi]

Better late than never 1990 Honda technology.

 

[L_Sludger]

on my car when VTEC kicks in I go from 20 horsepower to 28 horsepower. yo

 

[mechtech2]

I think the Chevy version with it's simpler design could work well.
Still, it is a lot of parts/ complication to help out cruising economy a little.

 

[sciphi]

Originally Posted By: mechtech2
I think the Chevy version with it's simpler design could work well.
Still, it is a lot of parts/ complication to help out cruising economy a little.


1 mpg is huge for a volume seller like the Impala or the Malibu, especially in an engine that will power a fair chunk of those cars. Engineers do all sorts of crazy things for 0.5 mpg or 0.1 mpg to help CAFE averages, so a 1 mpg bump with an already-proven and cost-effective technology is like hitting the jackpot.

 

[SteveSRT8]

All I can say is my friend Neil's 2013 malibu with the 4 banger is one sweet little car!

I was completely blown away with the little thing, it's a great car design with a lot of features and a classy look.

 

[mechtech2]

Originally Posted By: sciphi
Originally Posted By: mechtech2
I think the Chevy version with it's simpler design could work well.
Still, it is a lot of parts/ complication to help out cruising economy a little.


1 mpg is huge for a volume seller like the Impala or the Malibu, especially in an engine that will power a fair chunk of those cars. Engineers do all sorts of crazy things for 0.5 mpg or 0.1 mpg to help CAFE averages, so a 1 mpg bump with an already-proven and cost-effective technology is like hitting the jackpot.


Yes, you are right.. gleaning another 1MPG nowadays IS a lot.
I am not a fan of Honda's little pins that stick out and actuate the lobes. II like the rotating cam thing the Chevy seems to use.

 

[rjundi]

Originally Posted By: mechtech2
I think the Chevy version with it's simpler design could work well.
Still, it is a lot of parts/ complication to help out cruising economy a little.


Many people probably thought that about Honda VTEC yet it turned out to be a trouble free technology for them.