61ragtop
02-26-2011, 01:49 PM
I have a rookie ???????? I have noticed that some of your cars have AN lines going from the valve covers where the PCV and breathers would be. What is this and what is it for?
What are the benefits of what ever it is for a street car?
Roadbuster
03-06-2011, 08:23 AM
They are likely breather tubes that go to air/liquid separator catch cans. At high RPM and boost levels oil can get pushed up and out regular breathers. They prevent it from getting all over the engine and the track. May not be that useful on the street because you don't wind it up for that long on the street. On the track you check them and drain after sessions.