The tube on the Valve cover - Page 4 - Ford Focus Forum, Ford Focus ST Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum > Ford Focus First Generation > ZETEC Performance (2000-2004)

ZETEC Performance (2000-2004) The place to chat about any 2.0L Zetec engine performance, tuning and exhaust related upgrades.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 10-29-2008, 11:03 PM   #31
Executionerhk
Focus Fanatic
 
Executionerhk's Avatar
 
Join Date: Apr 2008
Fan#: 55338
Location: Topeka, KS
What I Drive: 2000 VW Passat TDI

Posts: 1,831
FF Reputation: 3 Executionerhk Good Standing Member
Buy-Sell-Trade Rating: (4)
see.. there are 3 different ways to understand what it is for...
and I will have no clue of course...
and even AEM is having the tube in front of MAF...
so if something will be wrong... then AEM is doing the wrong thing which I think they know what their design is...

03OrangeSVT has his point about hot air going in to the intake...
it will be like heat soak, i could see where he is going...

about your presure thing... I would like to to take a better picture with sound and see what it is...
__________________
Midwest Crew #23
Zetec Crew #287
Bone Stock Yellow ZX3"SOLD"
"REBORN" w/ AZFS22C Gap 0.060and Ford Racing Wire
Executionerhk is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-29-2008, 11:24 PM   #32
mellephants
omn-nom-nomnomnomnom
 
mellephants's Avatar
 
Join Date: Dec 2007
Fan#: 52400
Location: Urbana, IL
What I Drive: 12 SE, 91 DR350S, 74 CL360

Posts: 2,291
Points 10,941, Level 69
Points: 10,941, Level: 69 Points: 10,941, Level: 69 Points: 10,941, Level: 69
Level Up 23% Completed
Level up: 23% Level up: 23% Level up: 23%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 12 mellephants Great Standing Member
Buy-Sell-Trade Rating: (15)
Quote:
Originally Posted by iminhell View Post
understand how the system works
That's great advice.

executioner: If you don't want to understand the system, you could always copy someone's setup that has been working without problems for awhile. For simplicity and effectiveness, I recommend a simple filter on the breather tube on your valve cover, and no change to the OEM PCV-valve system.

iminhell: You leave your valve cover breather capped all the time? I disapprove of that. If you won't stay stock (breather in your airbox, on the atmosphere side of the intake filter), at least throw a filter on it. The only other suggested solution is to run it to your intake tract... you don't want to plug it.
__________________
SCT PRP FTMFW!
mellephants is offline  
    Reply With Quote Quick reply to this message
Old 10-29-2008, 11:37 PM   #33
illinipo
Token Engin-nerd
 
illinipo's Avatar
 
Join Date: Aug 2006
Fan#: 37693
Location: Well wouldn't you like to know?, Not Listed
What I Drive: dirty wag; Party; Bavarian phallus

Posts: 3,408
FF Reputation: 272 illinipo Outstanding Standing Member illinipo Outstanding Standing Member illinipo Outstanding Standing Member
Buy-Sell-Trade Rating: (19)
Quote:
Originally Posted by mattellermets View Post
the vacuum in the lower crankcase does reach the valve cover
How?

you say by drawing in air through the breather tube. but HOW does it get from under the valvecover, to the crankcase? That is where what youre saying makes no sense at all.

Quote:
Originally Posted by mattellermets View Post

any blowby is likely to cause positive crankcase pressure, which will show up as fumes at the breather
nope not quite. the crankcase is under vacuum thanks to the PCV. Any excess pressure will cause junk to go through the PCV system to the intake manifold.

Quote:
Originally Posted by mattellermets View Post
executioner: If you don't want to understand the system, you could always copy someone's setup that has been working without problems for awhile. For simplicity and effectiveness, I recommend a simple filter on the breather tube on your valve cover, and no change to the OEM PCV-valve system.
bingo this works very well.

Quote:
Originally Posted by mattellermets View Post
iminhell: You leave your valve cover breather capped all the time? I disapprove of that. If you won't stay stock (breather in your airbox, on the atmosphere side of the intake filter), at least throw a filter on it. The only other suggested solution is to run it to your intake tract... you don't want to plug it.
when you plug it / block it off you are causing a high pressure situation under the valve cover (caused by the heated air in there as the engine warms up.)
__________________
Quote:
Originally Posted by Dennis_Grant
Remember this list: Bilstein; Penske; Koni; Ohlins; Sachs; Dynamic Suspension.

Not on this list? Almost certainly crap.
SUV this!
illinipo is offline  
    Reply With Quote Quick reply to this message
Old 10-29-2008, 11:49 PM   #34
iminhell
C2H5OH
 
iminhell's Avatar
 
Join Date: Jun 2006
Fan#: 36222
Location: Darwin, MN
What I Drive: 2000 & 2001 ZX3's

Posts: 10,692
Points 18,286, Level 85
Points: 18,286, Level: 85 Points: 18,286, Level: 85 Points: 18,286, Level: 85
Level Up 88% Completed
Level up: 88% Level up: 88% Level up: 88%
Forum Activity 16%
Activity: 16% Activity: 16% Activity: 16%
FF Reputation: 48 iminhell Great Standing Member
Buy-Sell-Trade Rating: (4)
Quote:
Originally Posted by illinipo View Post
How?

you say by drawing in air through the breather tube. but HOW does it get from under the valvecover, to the crankcase? That is where what youre saying makes no sense at all.
Can I answer this one?

Oil return ports in the head, of which I count 7 (3 on the intake side and 4 on the exhaust side). There is not enough oil flow through the head to occupy all the volume of those returns at one time. So air can flow freely from top to bottom or bottom to top.

Photo courtesy of TLS_BMX:



At the top (exhaust side) the 4 ice cream shaped ports are for oil return to the oil pan. On the bottom they are the comma shapes.
The brownish ones are for coolant.
The last one, elongated oval, is the oil feed to the head (cam journals).
__________________
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.
iminhell is offline  
    Reply With Quote Quick reply to this message
Old 10-29-2008, 11:50 PM   #35
illinipo
Token Engin-nerd
 
illinipo's Avatar
 
Join Date: Aug 2006
Fan#: 37693
Location: Well wouldn't you like to know?, Not Listed
What I Drive: dirty wag; Party; Bavarian phallus

Posts: 3,408
FF Reputation: 272 illinipo Outstanding Standing Member illinipo Outstanding Standing Member illinipo Outstanding Standing Member
Buy-Sell-Trade Rating: (19)
There is a pool of oil in the head at all times, no? Well, i guess there isnt then.

clearly this is where i say oh crap and concede
__________________
Quote:
Originally Posted by Dennis_Grant
Remember this list: Bilstein; Penske; Koni; Ohlins; Sachs; Dynamic Suspension.

Not on this list? Almost certainly crap.
SUV this!
illinipo is offline  
    Reply With Quote Quick reply to this message
Old 10-29-2008, 11:59 PM   #36
iminhell
C2H5OH
 
iminhell's Avatar
 
Join Date: Jun 2006
Fan#: 36222
Location: Darwin, MN
What I Drive: 2000 & 2001 ZX3's

Posts: 10,692
Points 18,286, Level 85
Points: 18,286, Level: 85 Points: 18,286, Level: 85 Points: 18,286, Level: 85
Level Up 88% Completed
Level up: 88% Level up: 88% Level up: 88%
Forum Activity 16%
Activity: 16% Activity: 16% Activity: 16%
FF Reputation: 48 iminhell Great Standing Member
Buy-Sell-Trade Rating: (4)
lol, nope. No pool of oil. Your sarcasm is duly noted though.
__________________
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.
iminhell is offline  
    Reply With Quote Quick reply to this message
Old 10-30-2008, 12:05 AM   #37
Executionerhk
Focus Fanatic
 
Executionerhk's Avatar
 
Join Date: Apr 2008
Fan#: 55338
Location: Topeka, KS
What I Drive: 2000 VW Passat TDI

Posts: 1,831
FF Reputation: 3 Executionerhk Good Standing Member
Buy-Sell-Trade Rating: (4)
see you guys know what is going on... and can argue...
but I dono what is going on...
and all i have is...

?????????????????????????????????????????????????????????????????????????????

So now what should I do...
__________________
Midwest Crew #23
Zetec Crew #287
Bone Stock Yellow ZX3"SOLD"
"REBORN" w/ AZFS22C Gap 0.060and Ford Racing Wire
Executionerhk is offline  
    Reply With Quote Quick reply to this message
Old 10-30-2008, 12:16 AM   #38
mellephants
omn-nom-nomnomnomnom
 
mellephants's Avatar
 
Join Date: Dec 2007
Fan#: 52400
Location: Urbana, IL
What I Drive: 12 SE, 91 DR350S, 74 CL360

Posts: 2,291
Points 10,941, Level 69
Points: 10,941, Level: 69 Points: 10,941, Level: 69 Points: 10,941, Level: 69
Level Up 23% Completed
Level up: 23% Level up: 23% Level up: 23%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 12 mellephants Great Standing Member
Buy-Sell-Trade Rating: (15)
Thanks John! That makes sense... also explains how vacuum can can pull all the way across a V8, from one valve cover to the other.

And Pete... next time my hood is open, give my engine a little rev with your hand over the breather. Hot gas comes out because I don't have vacuum in the crankcase unless my car is moving.

I still don't know for sure if I need to run a draft tube... I'm just afraid of anything unexpected winding up in the JRSC. Maybe I should use a screen filter + catch can to be safe, then run the PCV back to the TB/IM vacuum.
__________________
SCT PRP FTMFW!
mellephants is offline  
    Reply With Quote Quick reply to this message
Old 10-30-2008, 12:27 AM   #39
mellephants
omn-nom-nomnomnomnom
 
mellephants's Avatar
 
Join Date: Dec 2007
Fan#: 52400
Location: Urbana, IL
What I Drive: 12 SE, 91 DR350S, 74 CL360

Posts: 2,291
Points 10,941, Level 69
Points: 10,941, Level: 69 Points: 10,941, Level: 69 Points: 10,941, Level: 69
Level Up 23% Completed
Level up: 23% Level up: 23% Level up: 23%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 12 mellephants Great Standing Member
Buy-Sell-Trade Rating: (15)
Steven- go to Autozone or something, get a breather filter and a section of (I think its 3/8") hose, then attach it to the valve cover vent. Just make sure the filter is attached someplace higher than the vent, you don't want oil to slosh up into the filter (messy).

I can take a picture of mine for ya tomorrow.

I'm actually looking for a more elegant filter, just kinda forgot since the one I have works fine, it's just a bit flashy for a filter... silly Vatozone.
__________________
SCT PRP FTMFW!
mellephants is offline  
    Reply With Quote Quick reply to this message
Old 10-30-2008, 09:44 AM   #40
03OrangeSVT
LETS TURN DIRT!!!!
 
03OrangeSVT's Avatar
 
Join Date: Feb 2005
Fan#: 19169
Location: Piketon, OH
What I Drive: MINI Cooper S TURBO

Posts: 11,906
FF Reputation: 152 03OrangeSVT Excellent Standing Member 03OrangeSVT Excellent Standing Member
Buy-Sell-Trade Rating: (5)
There is always air flow that comes out of the valve cover and if your rings are worn there is even more.... I have pics somewhere of my 2 tubes looking like small exhaust ports where there was so much blowby coming out.

There is always condensate and vapor that come out of both vents on the engine thats why we dont run them back into the intake system. If you ever clean your MAF you'll see dirt and OIL build up on the sensor so that should show you right there that the air filter does not do a good job of cleaning the air that comes from the vents, and the build up on the throttle body is another sure sign of this as well.

If you truely feel the need to put a filter on those lines I suggest to run both of them to a catch can with a filter on it.... so at least that way the filter has less chance of becoming oiled and eventually clogged.

Personally I run both of my vents below the tranny and vent them to atmosphere on the Focus AND on my Cobra..... I simply refuse to run those vents and put hot, contaminated air back into the intake system.
__________________
[B]1951 McCormick FARMALL M
2007 MINI Cooper S Turbo... new project car
1998 Chevy 3500 Ext cab, long bed, 4x4, duelly, turbo diesel
2004 Harley V-Rod.... sex on wheels
2011 Harley Electra Glide Ultra Limited
[/b]
03OrangeSVT is offline  
    Reply With Quote Quick reply to this message
Reply

Bookmarks & Social Networks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
"How To" - Replace Valve Cover Gasket and VCT Solenoid JohnMichael General Technical Chat 45 03-10-2013 09:06 AM
Turbo: PCV and Valve Cover Breather tube- Darth Focus Focus-Power Tuning 22 10-20-2009 06:33 PM
Valve cover question jayspikes82 SVT Performance (2002-2004) 7 09-19-2006 05:20 PM
Low end stumble / miss....valve cover drain hole Titan1969 General Technical Chat 7 09-14-2006 09:50 PM
Valve cover gasket blck01zx3 ZETEC Performance (2000-2004) 12 08-06-2005 08:13 PM


All times are GMT -5. The time now is 02:04 PM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Cadillac ATS-V, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.