i have a 94 camaro 3.4 and i was wondering if you could remove the crank case vent tube thats going from the valve cover to the cold air intake and put one of the small filters in the valve cover hole and cap off the intake?

i did this on my turboed eclipse and it ran alot better i was wondering if you could do it to a camaro im just starting to learn about the camaro so need a little help thanks

 

You could, but I have tried doing the same thing and couldn't find any breathers small enough to fit between the valve cover and the plenum. You would also have to plug the hole in the intake.

 

I found one at pepboys you think it would set off the check engine light or anything?

 

It shouldn't unless you don't seal the hole in the intake which would cause a vacume leak.

 

thanks for the help ill give it a try

 

You can *do* it but the engine's not going to run any better.

That aluminum tube is just a way to provide filtered air to the crankcase for the positive crankcase ventilation (PCV) system. Which, BTW, was one of the great technical advancements of the early 60s. It helped to reduce oil sludging and extend engine life. You really don't want to do anything to undo that.

 

An air breather replaces the intake vent hose on your crankcase, which vents the spent gases inside your head out into the atmosphere instead of back into your intake track. This keeps your engine clean and in top condition.

thats what i thought it did? so if i do this little mod it could increase oil sludge and less life?

 

Exactly. You are trying to remove the suction side of the PCV system, leaving you with just a CV system like engines from the 1880s to the late 1950's had. This would be a bad thing.

Massey

 

The air breather you're thinking of installing is an alternative way for air to *enter* the crankcase when the engine is running. Air is getting sucked into the engine through that filter because the PCV valve on the *other* valve cover is connected to manifold vacuum.
So, as originally desigend, filtered air travels through the little aluminum pipe to the passenger side rocker cover, air passes through the rocker cover and crankcase picking up oily vapors, moisture, and combustion byproducts, enters the driver side rocker cover, goes into the PCV valve, through a hose into the intake manifold, and into the cylinders where it is burned.

The only time crankcase air flows *out* of the engine is when the rings are so worn that cylinder blowby is too much for the PCV system to handle. Then you'll have an oily mess pushed up the aluminum pipe into the air inlet duct (or out the filter you've installed on the rocker cover).

As for increasing sludge and reducing engine life by installing the small filter, well, I don't think so. But there *was* a reason for manufacturers to abandon the small filter on the rocker cover and go to the closed system where a pipe or hose supplies filtered air. I think it was because the filter on the rocker cover needed to be cleaned periodically while the close system doesn't need maintenance except for the main air filter change.

 

makes sense thanks for the help!!!