|
|
02-10-2013, 12:50 PM | #1 |
VIP Member
Join Date: Nov 2001
Location: The Lowcountry.
Posts: 2,641
Likes: 2,154
Liked 2,082 Times in 769 Posts
|
Crankcase Ventilation
Any thoughts on this subject for Stock Eliminator applications?
|
02-10-2013, 02:15 PM | #2 |
Senior Member
Join Date: Jan 2007
Location: N/A
Posts: 882
Likes: 0
Liked 20 Times in 20 Posts
|
Re: Crankcase Ventilation
Ya, put a dry sump, and vac pump on. Just don't get caught. No, seriously, someone who actually knows the answer will chime in.
__________________
don,t have one |
02-10-2013, 02:41 PM | #3 |
Senior Member
Join Date: Mar 2006
Posts: 958
Likes: 618
Liked 165 Times in 60 Posts
|
Re: Crankcase Ventilation
Good ring and valve cover seal with a sealed crankcase breather, and its worth it on my car. There is a thread about vacuum check valves, that is worth searching for.
Sean
__________________
Sean Marconette 84 Mustang 5060 SS/N Last edited by Sean Marconette; 02-10-2013 at 02:43 PM. Reason: Better explanation |
02-10-2013, 03:55 PM | #4 |
Member
Join Date: Feb 2009
Posts: 243
Likes: 1
Liked 7 Times in 6 Posts
|
Re: Crankcase Ventilation
I can only pull a vacuum in the crankcase by using manifold vacuum. When things are right, I can get about 6" of negative pressure. If I just use the headers, I get no movement on my vacuum gauge. I recently discovered that my oil separator breathers weren't getting all the oil out of the vacuum line to the carb. I could see some oil residue on the carb gasket under the carb (see picture 2). I'm hoping a vacuum pump style separator will cure the problem. I use the old Jenkins/Moroso pan evac system. Does anybody still use this system?
[IMG][/IMG] [IMG][/IMG] Last edited by Ron Gusack; 02-10-2013 at 03:58 PM. Reason: added pic |
02-10-2013, 07:42 PM | #5 |
VIP Member
Join Date: Nov 2001
Location: The Lowcountry.
Posts: 2,641
Likes: 2,154
Liked 2,082 Times in 769 Posts
|
Re: Crankcase Ventilation
I've seen engines with a shop rag taped around the valve cover breather tube. What's up with that?
|
02-10-2013, 10:31 PM | #6 |
Member
Join Date: Feb 2009
Posts: 243
Likes: 1
Liked 7 Times in 6 Posts
|
Re: Crankcase Ventilation
Engines with lots of blow by build pressure in the crankcase and if there's enough, a mist of oil will be pushed out of the valve cover breather. The rag was supposed to catch the oil. I haven't seen that done for many years.
|
02-13-2013, 11:58 PM | #7 |
Junior Member
Join Date: Feb 2012
Posts: 10
Likes: 0
Liked 0 Times in 0 Posts
|
Re: Crankcase Ventilation
would love to have some feed back or "hint" on the correct brake booster check valve!!!!......late 60's???.....early 70's????......I need this junky 275hp 327 of mine to pick up!!!!
|
02-14-2013, 12:49 AM | #8 |
Member
Join Date: Feb 2009
Posts: 243
Likes: 1
Liked 7 Times in 6 Posts
|
Re: Crankcase Ventilation
The brake booster valve I'm using is a 1970 GM version. It just allows air to go in one direction. I don't know why one would be more beneficial than another, but I'll look into it.
|
02-14-2013, 12:59 AM | #9 |
Junior Member
Join Date: Feb 2012
Posts: 10
Likes: 0
Liked 0 Times in 0 Posts
|
Re: Crankcase Ventilation
i think your refering to a check valve that is screwed into your header.......brakebooster check valve is plastic and similar to a PCV valve in size
|
02-14-2013, 11:57 PM | #10 | |
Member
Join Date: Feb 2009
Posts: 243
Likes: 1
Liked 7 Times in 6 Posts
|
Re: Crankcase Ventilation
Quote:
I've never run a PCV valve, just the sealed Moroso breathers. Does this setup appear wrong? How do I keep oil from being pulled into the intake? |
|
|
|