in the picture, there is this little piece sticking out, Must I connect this? Can I just leave it like this? Some people said it's ok to not connect it , is it true?
WHAT IS THE FUNCTION OF THIS LITTLE TUBE?


thanks

 

Isnt that the breather tube that connects to the valve cover

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CeReaL &raquo;</TD></TR><TR><TD CLASS="quote">Isnt that the breather tube that connects to the valve cover </TD></TR></TABLE>

yes..ur right..u dont really have to ..but if u want 100% right funtion..connect it

 

100% corrct function? what if I didn't connect it, over time what can happen?

and I still want to know what that thing is for.

thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSblueRacing &raquo;</TD></TR><TR><TD CLASS="quote">100% corrct function? what if I didn't connect it, over time what can happen?

and I still want to know what that thing is for.

thanks</TD></TR></TABLE> its part of you emissions i believe. just hook it up to your valve cover and be on your way. or dont. it wont hurt anything if you dont

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
it wont hurt anything if you dont
</TD></TR></TABLE>

Thats highly debatable on many levels.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StyleTEG &raquo;</TD></TR><TR><TD CLASS="quote">

Thats highly debatable on many levels.</TD></TR></TABLE> *cracks knuckles* k lets debate it then

 

OK
The tube on the valve cover is used to let the pressuure, heat and fumes out of the motor. On a stock motor Honda connected this to the intake instead of using a filter on the valve cover.
Cause honda is real big on emmissions, and keeping the air you and i breath clean.
So companies who make intakes put that hole there so there intakes wont be illegal.
The pressure in the motor has to go somewhere so they connected the valve cover to the intake.
So the answer is no, you dont need to connect them. just plug the hole on the intake, and put alittle filter on the valve cover, dont pulg the hole on the valve cover cause the motor has to breath.
Hope this answers your question.

 

If you look at the honda diagrams, you will see that fresh air is supposed to flow into the valve cover. This helps displace the oil vapors, in the crankcase. Otherwise at WOT when there is no vacuum and the PCV valve closes the only means of venting the vapors is simply bleeding off pressure through the valve cover nipple.

This does not evacuate oil vapors, blowby, or crankcase pressure effectively and you end up getting more oil vapor blowing by the seals. The result is worse ring seal, which leads to even more blowby. Its a never ending cycle.

 

It was a while back, but Tuan the 'legendary' engine builder (forgot the website...X_X) was discussing the fact that the breather is a important part in the engine to keep positive pressure in the internal system. Without the positive pressure, such as what breather filters cannot provide, it can lead to internal complications.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4DoorTeg &raquo;</TD></TR><TR><TD CLASS="quote">It was a while back, but Tuan the 'legendary' engine builder (forgot the website...X_X) was discussing the fact that the breather is a important part in the engine to keep positive pressure in the internal system. Without the positive pressure, such as what breather filters cannot provide, it can lead to internal complications.</TD></TR></TABLE>

Yeah, he still posts frequently at TI and sometimes here. Larry from Endyn also agree's with Tuan on this subject.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StyleTEG &raquo;</TD></TR><TR><TD CLASS="quote">If you look at the honda diagrams, you will see that fresh air is supposed to flow into the valve cover. This helps displace the oil vapors, in the crankcase. Otherwise at WOT when there is no vacuum and the PCV valve closes the only means of venting the vapors is simply bleeding off pressure through the valve cover nipple.

This does not evacuate oil vapors, blowby, or crankcase pressure effectively and you end up getting more oil vapor blowing by the seals. The result is worse ring seal, which leads to even more blowby. Its a never ending cycle.</TD></TR></TABLE> and a breather on the valve cover wouldnt provide "fresh air"? therefore allowing you to plug that nipple on the intake?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1quickLS &raquo;</TD></TR><TR><TD CLASS="quote"> and a breather on the valve cover wouldnt provide "fresh air"? therefore allowing you to plug that nipple on the intake?</TD></TR></TABLE>

It would be a problem on two levels.

The hose in the intake is designed to route fresh air into the valve cover. So its more than just what ever small amount of vacuum the crankcase pulls from the valve cover (or doesn't).

Secondly, that small hole by itself is not adequate in bleeding off crankcase pressure that is built up during high RPMS @ WOT. If you were to plum more fittings for more breather area like the Endyn setup, then you would probably be safe not running a hose.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StyleTEG &raquo;</TD></TR><TR><TD CLASS="quote">

It would be a problem on two levels.

The hose in the intake is designed to route fresh air into the valve cover. So its more than just what ever small amount of vacuum the crankcase pulls from the valve cover (or doesn't).

Secondly, that small hole by itself is not adequate in bleeding off crankcase pressure that is built up during high RPMS @ WOT. If you were to plum more fittings for more breather area like the Endyn setup, then you would probably be safe not running a hose.</TD></TR></TABLE> do you have a pic of this set up?

 

http://www.theoldone.com/artic...k.jpg

(linked due to image size)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StyleTEG &raquo;</TD></TR><TR><TD CLASS="quote">http://www.theoldone.com/artic...k.jpg

(linked due to image size)</TD></TR></TABLE> i saw this before!!!!! i didnt know what the hell was going on with it. what are the benifits of this?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4DoorTeg &raquo;</TD></TR><TR><TD CLASS="quote">It was a while back, but Tuan the 'legendary' engine builder (forgot the website...X_X) was discussing the fact that the breather is a important part in the engine to keep positive pressure in the internal system. Without the positive pressure, such as what breather filters cannot provide, it can lead to internal complications. </TD></TR></TABLE>

Wait so this can be harmful to the engine? I have a hose connected to mine, it just doesn't go to the intake. So it's basically a breather. So is this bad?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rovigian &raquo;</TD></TR><TR><TD CLASS="quote">

Wait so this can be harmful to the engine? I have a hose connected to mine, it just doesn't go to the intake. So it's basically a breather. So is this bad?</TD></TR></TABLE> thats what there saying. i have mine connected to my intake i was just wondering about the breather theory. i guess its ok on FI cars

 

to get the correct positive crank case pressure from that little tube, you can't just simply connect a tube from that thing to the valve cover. you need the oem slant cut tube so that the air will flow into it properly. otherwise, oil vapours will get sucked out of the valve cover and into the intake charge.

 

there's an article on team-integra. couldn't find it, though. anyone have it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1quickLS &raquo;</TD></TR><TR><TD CLASS="quote"> thats what there saying. i have mine connected to my intake i was just wondering about the breather theory. i guess its ok on FI cars</TD></TR></TABLE>

Its really not good on FI cars either, just most people don't want to bother with the correct setup on an FI car.

The endyn breather setup allows more area for pressure to be bled off from, and more area for fresh air to be sucked in from via crankcase vacuum. (PRE WOT)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4door &raquo;</TD></TR><TR><TD CLASS="quote">to get the correct positive crank case pressure from that little tube, you can't just simply connect a tube from that thing to the valve cover. you need the oem slant cut tube so that the air will flow into it properly. otherwise, oil vapours will get sucked out of the valve cover and into the intake charge.</TD></TR></TABLE>

what exactly is a slant tube??

 

what kind of intake is that it looks the same as mine that came on my car

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StyleTEG &raquo;</TD></TR><TR><TD CLASS="quote">If you look at the honda diagrams, you will see that fresh air is supposed to flow into the valve cover. This helps displace the oil vapors, in the crankcase. Otherwise at WOT when there is no vacuum and the PCV valve closes the only means of venting the vapors is simply bleeding off pressure through the valve cover nipple.

This does not evacuate oil vapors, blowby, or crankcase pressure effectively and you end up getting more oil vapor blowing by the seals. The result is worse ring seal, which leads to even more blowby. Its a never ending cycle.</TD></TR></TABLE>

i dont have honda diagram but i will tell you what i see and feel...when i took out the little filter off the little hold on the valve and put my finger close to it while the engine is running at ilding rpm...i felt the air rushing out of the valve...unlike the honda diagram you see..so i dont know...im assuming that the air that is rushing out of the valve must be bad, poluted air from oil with high heat in the head

so...if you routed up the little hole on the valve to the intake, then that poluted air will get recycle back into the head out to the exhaust valve...which is bad cause valve air is bad and it shouldn't recycle back into the IM to the head

benifit when connect the littel hole on the valve to the little hole on the intake is that the intake little's hole has a ability to suck air in into IM to the head...just like the ability of the intake is to suck air into engine right? if the little hole on the intake has the ability to suck air, then it will sucks more poluted air from the valve to the intake...this sucking effiency helps stablizing the pressure of the head, vapor oil, watever etc bullshit in there....(stablizing the head is the benifit)

sucking too much bad poluted air is the downside

correct me if im wrong..

 

I love this debate, I have been running no tube with a filter for many years and no problems.