catch can?

what does a catch can do? is it something worth investing in?
thanx

only catch can i can think of is one for the radiator over flow , you can get one from summit or jegs , they also make them for the oil system if you are running a dry sump system

Catch cans are used to collect blowby, from the head, instead of recycling it into the intake, intake manifold, and head. Mostly they are seen on turbo applications, as N/A or lightly modded engines don't burn enough oil up to require one.

They do help keep the insides cleaner, but IMO unless you are boosted, they are a show item.

thanx

Doesn't Greddy make a catch can that connects to the actual turbo housing to keep it lubed? The sludgy stuff stays in the can but the oil fumes go through. I think that's how my buddy hooked his up..

Doesn't Greddy make a catch can that connects to the actual turbo housing to keep it lubed? The sludgy stuff stays in the can but the oil fumes go through. I think that's how my buddy hooked his up..
No, there's no way for that to work. Turbos have oil sending, and oil return lines. All putting a catch can inbetween would do is fill it up with oil.