Catch can questions

[rtrev2442]

I have a few questions:

What is a catch can / what does it do?
Are there benefits from having one on the engine? If so, what?
Does a company make one for the 2.0 TSI engine?

I've seen countless amounts of people with them on their FSI's but none on a TSI.

[Seppdelaney]

I have a few questions:

What is a catch can / what does it do?
Are there benefits from having one on the engine? If so, what?
Does a company make one for the 2.0 TSI engine?

I've seen countless amounts of people with them on their FSI's but none on a TSI.

HERE.

Have fun with that. And please please please use the search function- you're going to draw a lot of crap from the peanut gallery by not searching.

[rtrev2442]

thanks, and i did use the search, however i probably used the wrong keywords and search options. I will definitely brush up on that

[Seppdelaney]

Basically- since it's an engine component- its in the tsi pages. There are two searches. One for the entire forum (which I never use) and one for specific pages. Use the one for specific pages. It'll narrow down the search.

[bryangb]

In a nutshell, it catches oil blowback from the crank case so it does not get sent back into the motor which can lower performance

[kevin splits]

In a nutshell, it catches oil blowback from the crank case so it does not get sent back into the motor which can lower performance

Yes. And some argue blowby should be recirculated to help even ring wear and for some reason I don't understand clean the valves somehow

On the 2.5 the valve cover has a paper filter that does not allow much liquid blowby to flow back into the valve cover. Catch cans have more of a purpose on a turbo car imo, but I have one, and I collect a fair amount of crap in it from the billet valve cover.

[DunnyCTMKV]

After dumping the crap out that I've caught in my catch can, I am a firm advocate for running one. I clean it once every other week, takes 5 minutes to empty and reinstall.