why do some catch cans have a breather
#1
why do some catch cans have a breather
i dont get this, im looking into making a somewhat functional pcv system and making my own catch can
wouldnt this just make no suction on the pcv? unless theres a good reason to have one i was just gona make a sealed container with steel wool in it and a in from my drilled out pcv valve and out to my slash cut barb fitting in my pre-turbo intake
wouldnt this just make no suction on the pcv? unless theres a good reason to have one i was just gona make a sealed container with steel wool in it and a in from my drilled out pcv valve and out to my slash cut barb fitting in my pre-turbo intake
#2
Re: why do some catch cans have a breather
the pcv system vents positive crank case pressure. So by having a breather on your catch can you are providing a path for the pressure to escape to atmosphere. If you want to further increase the suction, you can put a slash cut outlet in your downpipe facing backwards, this will draw out the gasses using the suction created by passing exhaust gas. Putting a ball valve in the line to the outlet prevents exhaust venting into the crank case.