not sure what its called... but theres a small "port" for oil to come out of on the head... usually its connected to the intake by a silicone line... oil will come out of it right? where does that oil come from, and what does it mean?

 

I think you are talking about the air intake on the valve cover? That port where everyone puts a breather filter? Thats NOT for oil to come out, thats for FILTERED air to go IN to the valve cover, providing fresh air to let crankcase fumes come out the PCV valve.

If you've got oil pouring out of there, your rings are probably gone.

 

i got a question.. i heard from some people.. or from somewhere that butting a breather filter on makes the engine work harder to get air in, or isnt good for your engine.. can someone confirm this and tell me if its true or not, and if it is, why?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black-LS &raquo;</TD></TR><TR><TD CLASS="quote">I think you are talking about the air intake on the valve cover? That port where everyone puts a breather filter? Thats NOT for oil to come out, thats for FILTERED air to go IN to the valve cover, providing fresh air to let crankcase fumes come out the PCV valve.

If you've got oil pouring out of there, your rings are probably gone. </TD></TR></TABLE>

k, yeah, blow by. so it doesnt only go to the crankcase...? ive heard people say ur cams can like, THROW oil out of it... hmmm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSTEG96 &raquo;</TD></TR><TR><TD CLASS="quote">

k, yeah, blow by. so it doesnt only go to the crankcase...? ive heard people say ur cams can like, THROW oil out of it... hmmm </TD></TR></TABLE>

im not exactly sure, but isnt blow-by somethign you worry about with older turbo'd cars? or can it happen to N/A engines

 

Excess crankcase gas comes out and goes back into the intake. Sometimes its oily and leaves a residue in the intake tract. (Intake, Throttle body and manifold)

 

blow by is when the rings aren't sealing and compression leaks right past them. it can happen to any engine. also if you're stupid and dont line the rings up correctly when you build the motor (gaps 180 out from eachother) it'll leak compression too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ..::91TEG-G2::.. &raquo;</TD></TR><TR><TD CLASS="quote">i got a question.. i heard from some people.. or from somewhere that butting a breather filter on makes the engine work harder to get air in, or isnt good for your engine.. can someone confirm this and tell me if its true or not, and if it is, why? </TD></TR></TABLE>

yeah i heard sumthing like that too ...i would also like to know . i guess bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ..::91TEG-G2::.. &raquo;</TD></TR><TR><TD CLASS="quote">i got a question.. i heard from some people.. or from somewhere that butting a breather filter on makes the engine work harder to get air in, or isnt good for your engine.. can someone confirm this and tell me if its true or not, and if it is, why? </TD></TR></TABLE>

not true, the same amount of air is being pumped no matter what is on the end of the hose, it's really supposed to go into the intake pipe to take the nice fresh cold air that is being delivered to the engine via the manifold.. the difference of having it plugged into the Intake pipe or having a breather on it is pretty much the same difference as having a CAI or a short ram intake for your manifold

 

NO NO NO! The crankcase breather relieves pressure inside the engine. It does not take in air.... that would be stupid.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by You_Get_Vapors &raquo;</TD></TR><TR><TD CLASS="quote">NO NO NO! The crankcase breather relieves pressure inside the engine. It does not take in air.... that would be stupid.</TD></TR></TABLE>

I hope you're kidding, because the hose from the intake arm to the top of the valve cover is for air to go IN.

 

this is from team-integra.net, Teg Mini-FAQ

" Are breather filters really bad?
Yes they are. Read further for why.

"Here's the stock PCV diagram from the Helms manual. On the left is a cutaway view of the engine. On the right is a cutaway view of the stock intake. In the middle are the separate breather circuit and the PCV valve circuit:
[image not available]


all you have to learn is how the fresh air cicuit flows (follow the open white arrow) and how the crankcase vapor (with oil vapors in it ) circuit flows (follow the black arrows). Notice which circuit flows to the valve cover (on top of the engine on the left)....it's NOT the crankcase vapors. When you add a breather, you remove the line from the intake to the valve cover.


The honda crankcase breather is a POSITIVE pressure ventilation system.The air from the intake blows into the valve cover. It is NOT a negative pressure ventilation system...it does NOT suck air from the valvecover to the intake.

Breathers remove the source of positive ventilation that repressurizes the POSTIVE CRANKCASE VENTILATION (PCV) valve.

There is less pressure in the crank when you add a breather at the valve cover. The consequence of this is you get more positive blow-by from the combustion chamber past the piston rings and into the crankcase. More blow-by means less cylinder pressure...less cylinder pressure means the burn is slower and less complete...the result is more emissions and less power.

If you want to do this right and remove oil vapor from the circulating crankcase before it goes into the intake valve then, get an oilcatch can and put a breather on the catch can. Then place the catch can in between the valve cover breather and the PCV valve.

Disconnecting the breather tube, which blows fresh intake air into the valve cover, and placing a breather on the valve cover just creates more blow-by and emissions. Eventually you have so much blow-by, you lose power. "

hope this helps!

 

well if its bad, what do you do if your boosted?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BaGGed HoNDa &raquo;</TD></TR><TR><TD CLASS="quote">well if its bad, what do you do if your boosted?</TD></TR></TABLE>

search the Forced Induction forum for "catch can".

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BaGGed HoNDa &raquo;</TD></TR><TR><TD CLASS="quote">well if its bad, what do you do if your boosted?</TD></TR></TABLE>
Get rid of your PCV all together and use a crankcase evacuation pump. IF you can get about 15psi of vacuum inside your crankcase it will run at it's best. Then use that filter to suck in good air