Breather Filter or Rubber Hose..??
#1
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Breather Filter or Rubber Hose..??
Hey guys,
So, I am curious as to everyones opinion on this.. Do you know how on most cars, that there is a small rubber hose that connects from the intake tubing to the block and is referred to as a breather tube..? It has something to do with "crankcase breathing / ventilation" or something like that.. Well, some people use a breather filter instead of the rubber tube.. The breather filter, being a small (looks like a very small CAI type cone filter) cone filter, being clamped onto the tap on the block, and then the tap coming off of the intake being blocked off.. I've heard some people say this is perfectly fine, if not better for the car, while others say it is dangerous for the car.. Any idea..? I have this set-up on my car right now, and everything seems fine, but I just figured I would check.. I can post a picture if you're unsure as to what I mean..
Thanks!
So, I am curious as to everyones opinion on this.. Do you know how on most cars, that there is a small rubber hose that connects from the intake tubing to the block and is referred to as a breather tube..? It has something to do with "crankcase breathing / ventilation" or something like that.. Well, some people use a breather filter instead of the rubber tube.. The breather filter, being a small (looks like a very small CAI type cone filter) cone filter, being clamped onto the tap on the block, and then the tap coming off of the intake being blocked off.. I've heard some people say this is perfectly fine, if not better for the car, while others say it is dangerous for the car.. Any idea..? I have this set-up on my car right now, and everything seems fine, but I just figured I would check.. I can post a picture if you're unsure as to what I mean..
Thanks!
#2
its not gonna hurt anything. most people block it off because they are getting oil recirculated along with the fumes. that hose is just part of the PCV and relieves pressure by routing it back intake the intake. but sometimes oil will work its way into the intake. i would prefer a catch can over removing it all complete. that way i can stop the oil from getting back into the intake yet still relieve a good about of pressure
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there are several reasons people do this, what is the point of having a cold air intake, if your going to muck it up with hot air from the crank case?
and why would you want oil going into your throttle body, sure its not all the time, but why? sure catch can is a solution and looks nice under the hood, but with as little oil as it is, i'd rather just vent it off to the atmosphere, and clean the filter every once in awhile.
will it hurt the car either way? no.
also the intake sucking air from the crank case creates a negetive atmosphere in the block why would you want that? stupid imo.
and why would you want oil going into your throttle body, sure its not all the time, but why? sure catch can is a solution and looks nice under the hood, but with as little oil as it is, i'd rather just vent it off to the atmosphere, and clean the filter every once in awhile.
will it hurt the car either way? no.
also the intake sucking air from the crank case creates a negetive atmosphere in the block why would you want that? stupid imo.
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i didn't even do it with my factory intake was the first mod i did was removing that hose and filtering the crank case side and plugging the intake side.
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the only reason it isnt vented to the atmosphere from the factory is it would be releasing a lot of oil fumes into the atmosphere. The manufacturer ties it into the intake so these oil fumes can be burned and eliminated. Removing it will cause you to fail emissions, and have a cleaner TB
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so just keep the hose and put it on for emissions tests.......i didnt realize that this had such a negative effect on the CAI........im thinking i should go get a breather filter right now to replace that hose........but dumb question how did you guys block off the hole in the CAI for the hose once you took it off?
thanks for the advice in advanced
thanks for the advice in advanced
Last edited by Tank07; 01-09-2009 at 04:42 PM. Reason: Automerged Doublepost
#16
Not a Sebring
For me, its really varied on each car I owned.
On my RX-7 I had a Cork Sport intake tube and a Bonez street comp intake (MAF adapter/filter), and I ran a Bonez breather filter with that setup.
But on my Cobalt I just have the small silicon hose that runs between the block and the intake tube, which was included with my AEM CAI.
And no, my motor isn't that dirty any more, and yes, I removed that gayyyy ass oil cap spacer shortly, so no worries
On my RX-7 I had a Cork Sport intake tube and a Bonez street comp intake (MAF adapter/filter), and I ran a Bonez breather filter with that setup.
But on my Cobalt I just have the small silicon hose that runs between the block and the intake tube, which was included with my AEM CAI.
And no, my motor isn't that dirty any more, and yes, I removed that gayyyy ass oil cap spacer shortly, so no worries
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there are several reasons people do this, what is the point of having a cold air intake, if your going to muck it up with hot air from the crank case?
and why would you want oil going into your throttle body, sure its not all the time, but why? sure catch can is a solution and looks nice under the hood, but with as little oil as it is, i'd rather just vent it off to the atmosphere, and clean the filter every once in awhile.
will it hurt the car either way? no.
also the intake sucking air from the crank case creates a negetive atmosphere in the block why would you want that? stupid imo.
and why would you want oil going into your throttle body, sure its not all the time, but why? sure catch can is a solution and looks nice under the hood, but with as little oil as it is, i'd rather just vent it off to the atmosphere, and clean the filter every once in awhile.
will it hurt the car either way? no.
also the intake sucking air from the crank case creates a negetive atmosphere in the block why would you want that? stupid imo.
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