Any harm to engine by disabling cylinder deactivation?

[wizardfitz]

any harm to the engine disabling it?

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[Blueshound]

That's a very good question.

As I understand it, CD works by using oil pressure. Oil is pumped through a manifold that sits on top of the valvetrain. When the computer tells it to, it deactivates the valves for half the cylinders (presumably 2 in each bank). At the same time, the fuel injectors for those cylinders are shut down.

I suspect that "deactivating deactivation" could harm the engine if it is ever reactivated, when the ancient and crusty oil in the oil manifold is released back into circulation.

Depending on how it works, it seems like there could be a risk of starving other components of oil.

Better minds than I may disagree or have a better idea.

 

[Bryan Simon]

Not sure if it Rousch or Whipple, but one or both deactivate this system when a supercharger is installed (best of my recollection).
I believe the auto start/stop is shut down as well

 

[Pedaldude]

From what I have seen and read about other manufacturer's cylinder deactivation; if anything, disabling it is better for the engine!

 

[Blueshound]

From what I have seen and read about other manufacturer's cylinder deactivation; if anything, disabling it is better for the engine!

It may be! But we don't have a lot of information on how it works. I believe oil starvation was the cause of problems with GM motors, but that was a different design.
I'm going to do some research.

 

[Graygoose2021]

Not sure if it Rousch or Whipple, but one or both deactivate this system when a supercharger is installed (best of my recollection).
I believe the auto start/stop is shut down as well

Whipple does, and mine came without the Stop/start...they billed me $50 on the window sticker, I was like...Ok...LOL

 

[koalabob]

Look more closely at your window sticker....the $50.00 is a DEDUCTION they gave you for not having the function. Personally, I'd pay double that not to have it!

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