Concentric Camshafts (VVT), The MAHLE CamInCam Syetem...

[Street Lethal]

Very interesting stuff, would love to see one made for an LC2 engine....

"Our concentric camshafts enable dual-independent Variable Valve Timing or VVT on a single camshaft. Both the intake and exhaust centerline timings can be controlled to give optimum engine performance over the complete operating range. These cam assemblies form a key part of many of our VVA systems, but they are ideal for cam in block pushrod engines"...

http://www.mechadyne-int.com/vva-products/concentric-camshafts

 

[turbo nasty]

We dont have no VTEC YO....LMBO

 

[Street Lethal]

We dont have no VTEC YO....LMBO

... lol

It's made for pushrod engines.

 

[SuperSix]

 

[Street Lethal]

... not that pic, this pic

 

[SuperSix]

That cat's cooler

 

[Street Lethal]

That cat's cooler

Maybe if it had like two or three mice dangling from its' mouth...

 

[aminga]

 

[Street Lethal]

Now that was funny lol...

 

[aminga]

 

[novaderrik]

that would be pretty cool to have in conjuction with a variable ratio rocker arm that i read about in a car magazine probably 20 years ago- Hot rod, i'm thinking.. imagine being able to control not only valve timing, but also lift and duration in real time.. you could have an engine that gets 40mpg when you drive it nice but makes 500 or more when you push down the loud pedal..

 

[larrym]

Is this the same technology used in the Ford Eco Boost motors?

 

[Street Lethal]

Is this the same technology used in the Ford Eco Boost motors?

The newer Dodge Vipers use this CamInCam technology...

 

[bison]

There would be little gain in e.t. on a high hp race engine with one of these. Cruising and drivability would be greatly improved in a street application.

 

[TurboTnZ06]

Even my 2010 GMC Sierra 5.3L has VVT. Makes it a pita to tune in HP Tuners, took a whole day fighting KR at 3800 rpm trying to increase timing (guessing that's when it vtec kicked in yo).

 

[Street Lethal]

Even my 2010 GMC Sierra 5.3L has VVT. Makes it a pita to tune in HP Tuners, took a whole day fighting KR at 3800 rpm trying to increase timing (guessing that's when it vtec kicked in yo).

HP Tuners??? Get an XFI or Holley Dominator on that thing...

 

[Street Lethal]

There would be little gain in e.t. on a high hp race engine with one of these. Cruising and drivability would be greatly improved in a street application.

The cruising and drivability is definitely a plus, no more higher than normal stalls needed for mild street builds...

 

[TurboTnZ06]

HP Tuners??? Get an XFI or Holley Dominator on that thing...

I was tuning my DD truck, not the Buick. It had an annoying 7% tps setting from the factory trying to get off the line. I had to tune that out and some other things to make it shift better and smooth the MAF baseline.

 

[novaderrik]

Even my 2010 GMC Sierra 5.3L has VVT. Makes it a pita to tune in HP Tuners, took a whole day fighting KR at 3800 rpm trying to increase timing (guessing that's when it vtec kicked in yo).

i think the VVT in your truck advances and retards the whole cam, and not just either the intake or exhaust lobes.