Brought to you in part by:

M&M Restoration & Tool Supply Store

Great deals on auto restoration supplies!

.


NOTICE! The old Mustangsandmore.com is a read-only archive.
Currently the Search function is inoperative, but we are working on the problem.

Please join us at our NEW Mustangsandmore.com forums located at this location.
Please notice this is a brand new message board, and you must re-register to gain access.

  Mustangsandmore Forum Archive
  Ford Racing
  Oil coming out of breathers

Post New Topic  Post A Reply
profile | register | preferences | faq | search

next newest topic | next oldest topic
Author Topic:   Oil coming out of breathers
'69PonyRider
Gearhead

Posts: 254
From: Hawthorne, CA
Registered: Sep 2001

posted 11-14-2005 06:00 PM     Click Here to See the Profile for '69PonyRider        Reply w/Quote
im getting oil spewing out of my breathers. especially the passenger side one. which is on the rear. i have the finned aluminum valve covers that have "351 cleveland" on them and they use screw in breathers, which i have. only happens after high rpm driving like on the highway. its a 351C with about 10.5:1. Is this normal? Thanks.

Aldo

ericcasas
Journeyman

Posts: 99
From: Austin, TX
Registered: May 2005

posted 11-14-2005 06:42 PM     Click Here to See the Profile for ericcasas        Reply w/Quote
Do your valve covers have the oil baffles built in to them? (When you take the breather out, do you see a metal shield or do you see one of the rockers?) Did this happen all of the sudden or with the change of valve covers? Might need to find a set w/ baffles if it is because you switched valve covers.

'69PonyRider
Gearhead

Posts: 254
From: Hawthorne, CA
Registered: Sep 2001

posted 11-14-2005 06:54 PM     Click Here to See the Profile for '69PonyRider        Reply w/Quote
it always happened since i built the motor. i took the baffles out because they wouldnt clear the rockers. since i posted this i was looking around the site and ran into crankcase evac systems. might i need one of those to relieve some pressure?

Dad Vishus
Gearhead

Posts: 1153
From: Moscow, Iowa, USA
Registered: Dec 2001

posted 11-14-2005 09:09 PM     Click Here to See the Profile for Dad Vishus        Reply w/Quote
My race motor does this also. It spits oil out around the Moroso breathers. I also have a plug on one side place towads the center of the motor for filling it with oil. The Moroso tall covers have the breather holes located right above the stud girdles which makes oil filling a pain. I get oil out around the plug in that one also.

I improved mine a little by putting the valve cover with the oil fill on the passenger side. Mine spits oil worse on the driver side. I also duct tape the plug on the oil fill plug.

I've always figured this is caused by the bad oiling system in the Cleveland. It oils the top of the motor first. I have restricters under the main bearings but it still spits oil.

Baffles under the breather holes would probably help some.

------------------
63 Falcon 377 Cleveland stroker Flying Toilet alchohol injection. 6.19 @ 110 MPH 1/8 mile
2002 Ranger FX4 daily driver
2000 F350 PSD Crew cab dually - Like commuting in a B52!!
98 US Cargo Phantom II 28'

'69PonyRider
Gearhead

Posts: 254
From: Hawthorne, CA
Registered: Sep 2001

posted 11-14-2005 09:21 PM     Click Here to See the Profile for '69PonyRider        Reply w/Quote
i might have to cut the old baffles to make them fit. that or bend them in a way that wont interfere with the rockers. where can i get some twist-on grommets for these valve covers so i can run the evac system? my old ones got too crusty and i threw them out not knowing it was hard to find them again. lol. right now im running twist-on breathers with a rubber seal on top.

FiveOFastback
Gearhead

Posts: 165
From: Bethlehem, PA, USA
Registered: Nov 2003

posted 11-14-2005 10:35 PM     Click Here to See the Profile for FiveOFastback        Reply w/Quote
Did you over revv it at anytime? that can cause breather oil spewwing, also its sometimes a sign of rings going bad...

TJ

exlocal
Gearhead

Posts: 1552
From: hacienda hts., CA, USA
Registered: Dec 2004

posted 11-14-2005 10:44 PM     Click Here to See the Profile for exlocal        Reply w/Quote
DEJA VU........Taller valve cover with baffles built in, like one used to clear roller rockers.

------------------
reliving youth

'69PonyRider
Gearhead

Posts: 254
From: Hawthorne, CA
Registered: Sep 2001

posted 11-14-2005 11:17 PM     Click Here to See the Profile for '69PonyRider        Reply w/Quote
didnt over-rev it, i run a 3200 converter with 3.55's and highway speeds require me running at 4000 rpms to keep up with traffic. im gonna get some taller valve covers and run an evac system. hopefully thatll help. i dont get blowby and the motors is fairly fresh, and ive taken good care of it, but i never drove it too far or too hard so never realized the problem.

Bloose
Gearhead

Posts: 888
From: Milwaukee, WI
Registered: Dec 2001

posted 11-15-2005 01:31 AM     Click Here to See the Profile for Bloose        Reply w/Quote
I run the Ford tall aluminum covers with baffles. I still get some oil drip. What I do is replace the breathers every year with new ones. When new the filters in the breathers soak up the oil. When they start getting old they drip.

When I tryed running stock covers with the baffles removed they dripped really bad. My motor is actually still low in miles (though it's been running for 3 summers now) so it may get better with time, but for $12 a year for 2 new baffles, I'm not too concerned.

B

Fordwiser
Gearhead

Posts: 535
From: Metamora, Illinois
Registered: Dec 2000

posted 11-15-2005 06:23 PM     Click Here to See the Profile for Fordwiser        Reply w/Quote
Baffles will help, but most breathers leak some. A way of containing the mess is go to sporting goods store and buy some wrist sweat bands, the elastic makes them fit tight around the base of the breather, they soak up quite a bit of oil, plus you can wash them out.

Roger

JAAZZY
Gearhead

Posts: 918
From: Bay Area, CA
Registered: Apr 2001

posted 11-15-2005 06:27 PM     Click Here to See the Profile for JAAZZY        Reply w/Quote
My car did this for the same reason. I removed the baffles to clear the roller rockers. I finally got tired of this and bought a set of new cobra valve covers (I like the look) and bought some spacers so the baffles could stay. My oil leaks went away completely. I do have the rubber fitting that fit's in the oil fill tube as well as a baffled breather on the other side.

'69PonyRider
Gearhead

Posts: 254
From: Hawthorne, CA
Registered: Sep 2001

posted 11-15-2005 08:49 PM     Click Here to See the Profile for '69PonyRider        Reply w/Quote
who makes some clean, plain aluminum covers for the cleveland? i dont want to spend too much though. for some reason $200 seems a bit much to fix an oil leak lol.

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 11-16-2005 09:21 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by JAAZZY:
I...bought a set of new cobra valve covers...and...some spacers so the baffles could stay. My oil leaks went away completely. I do have the rubber fitting that fit's in the oil fill tube as well as a baffled breather on the other side.

JAAZZY,
If I'm understanding you correctly, you're running cobra covers with baffles, with spacers under the covers, and a baffled breather, right?

Who is the manufacturer of the baffled breathers you have?

Thanks in Advance!
Ryan

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 11-16-2005 09:33 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by '69PonyRider:
who makes some clean, plain aluminum covers for the cleveland? i dont want to spend too much though. for some reason $200 seems a bit much to fix an oil leak lol.

For about $80/pair. MOROSO part #68041.
They're not aluminum in color, rather anodized blue (but you steel wool them then spray them with aluminum engine paint). They're tall covers & have a 1.25" press-in grommet hole.

Go here:
http://www.jegs.com/webapp/wcs/stores/servlet/CategoryDisplay?lang=-1&catalogId=10002&storeId=10001&categoryId=15667

Ryan

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 11-16-2005 09:38 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
If a fella was using an electric fuel pump, why couldn't he install an elbow fitting into the mechanical fuel pump block-off plate and then fasten a valve cover breather onto the top of the elbow?

Would this single breather be enough - or would it blow out the dipstick tube anyway?

Ryan

'69PonyRider
Gearhead

Posts: 254
From: Hawthorne, CA
Registered: Sep 2001

posted 11-16-2005 12:26 PM     Click Here to See the Profile for '69PonyRider        Reply w/Quote
quote:
Originally posted by Ryan Wilke:
If a fella was using an electric fuel pump, why couldn't he install an elbow fitting into the mechanical fuel pump block-off plate and then fasten a valve cover breather onto the top of the elbow?

Would this single breather be enough - or would it blow out the dipstick tube anyway?

Ryan


This sparked a thought....could you run an evac system down to the header through that same spot?

'69PonyRider
Gearhead

Posts: 254
From: Hawthorne, CA
Registered: Sep 2001

posted 11-16-2005 12:29 PM     Click Here to See the Profile for '69PonyRider        Reply w/Quote
quote:
Originally posted by Ryan Wilke:
JAAZZY,
If I'm understanding you correctly, you're running cobra covers with baffles, with spacers under the covers, and a baffled breather, right?

Who is the manufacturer of the baffled breathers you have?

Thanks in Advance!
Ryan



I saw some baffled grommets at auto zone the other day. they have a slit at the bottom of the grommet, then you could just use a push in breather. i would use these but again. twist-on.

JAAZZY
Gearhead

Posts: 918
From: Bay Area, CA
Registered: Apr 2001

posted 11-16-2005 12:46 PM     Click Here to See the Profile for JAAZZY        Reply w/Quote
Ryan,

That is correct. I have spacers under the valve covers. So I need two gaskets on each side. I don't remember off the top of my head the name of the breather company and my car is still at the shop getting a blower installed.

69ponyrider is correct though for the oil fill tube side it is just a rubber grommet with a slit in it. Over the top of it is a push on breather. Even before the breather though oil was not coming out from the grommet. On the other side is a twist in style that is vented to the outside world. If I remember correctly it just has a simple baffle at the bottom to keep oil from splashing up.

I don't think I will need it soon. You can have it for free if that is the case. The breather gets in the way of the elbow for the blower and an evacuation system is planned instead. Actually the valve covers and spacers are coming off as well.

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 11-16-2005 02:24 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by '69PonyRider:
This sparked a thought....could you run an evac system down to the header through that same spot?

It seems do-able to me, but it would be better to hear from someone who has already tried it......... anyone?

Ryan

'69PonyRider
Gearhead

Posts: 254
From: Hawthorne, CA
Registered: Sep 2001

posted 11-16-2005 03:53 PM     Click Here to See the Profile for '69PonyRider        Reply w/Quote
quote:
Originally posted by JAAZZY:
Ryan,

That is correct. I have spacers under the valve covers. So I need two gaskets on each side. I don't remember off the top of my head the name of the breather company and my car is still at the shop getting a blower installed.

.....

I don't think I will need it soon. You can have it for free if that is the case. The breather gets in the way of the elbow for the blower and an evacuation system is planned instead. Actually the valve covers and spacers are coming off as well.


you wouldnt happen to be running a cleveland are you? im eyeing those spacers.

ericcasas
Journeyman

Posts: 99
From: Austin, TX
Registered: May 2005

posted 11-16-2005 03:58 PM     Click Here to See the Profile for ericcasas        Reply w/Quote
If you are talking about running a hose from the breather down to the block off plate, I dunno about that. That fitting coming off the breather is used by most to suck stagnet air out of the engine and then it gets recycled into the intake to be combusted. This will keep the engine breathing healthy. I dont run mine this way. I use two breathers w/ no evac system. People say that the evac system will prevent sludge. I say (at least in my car) I want nothing but fresh cool air going in my intake and I'll never build up 'sludge' because I yank my motor out and inspect/clean/change parts so often. I'd go back to the previous poster who said that you might have some compression leaking into the motor somewhere. That could most likely be causing the forcing of air out of the breather so hard that it is carrying oil with it. You mentioned that you dont have any 'blow by'. You wont experience 'blow by' unless your engine is actually sucking oil IN to the combustion chamber (in the form of a vacuum leak). In this case it could be blowing pressure OUT in the form of a compression leak. Have you done a compression check on the car? Do one and dont just check the pressure, make sure it holds the pressure as well.

-E

JAAZZY
Gearhead

Posts: 918
From: Bay Area, CA
Registered: Apr 2001

posted 11-16-2005 05:47 PM     Click Here to See the Profile for JAAZZY        Reply w/Quote
Sorry, it's a 302.

quote:
Originally posted by '69PonyRider:
you wouldnt happen to be running a cleveland are you? im eyeing those spacers.

Dad Vishus
Gearhead

Posts: 1153
From: Moscow, Iowa, USA
Registered: Dec 2001

posted 11-16-2005 11:27 PM     Click Here to See the Profile for Dad Vishus        Reply w/Quote
Here is a link to Unique aluminum Products.

http://www.uniquealuminumproducts.com/

Fabricated sheet metal valve covers. Most cool and most pricey!

------------------
63 Falcon 377 Cleveland stroker Flying Toilet alchohol injection. 6.19 @ 110 MPH 1/8 mile
2002 Ranger FX4 daily driver
2000 F350 PSD Crew cab dually - Like commuting in a B52!!
98 US Cargo Phantom II 28'

'69PonyRider
Gearhead

Posts: 254
From: Hawthorne, CA
Registered: Sep 2001

posted 11-17-2005 01:25 AM     Click Here to See the Profile for '69PonyRider        Reply w/Quote
i havent done a compression check. for what its worth. i pull 5-7 inches of vacuum at idle. its a 305H comp cams @ 110 ls. will this cam be the cause to some compression leakage?

All times are ET (US)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply
Hop to:

Contact Us | Mustangsandmore Front Page

Copyright 2006, Steve LaRiviere. All Rights Reserved.


Ultimate Bulletin Board 5.47d

Amazon Honor System Click Here to Pay Learn More

[Build a free Mustangsandmore.ws Home Page!]

[Posting Pictures]

[About M&M][Members' Pics]

[M&M Conventions] [M&M Mug Shots] [Tech Articles]

[M&M Bookstore] [M&M Restoration & Tool Supply Store]