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CC Advertisers
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04-08-2008, 11:57 AM
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CC Member
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Join Date: Dec 2006
Location: Northwood,
NH
Cobra Make, Engine: Unique
Posts: 91
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Not Ranked
Valve Cover Breathers (K&N)
Guys,
Need help in determining what K&N Part number would fit the LeMans style valve cover (twist on) for a breather.
Any suggestions would be appreciated as well as pics...
I'm having some blow-by in the current set-up (breather) and thought I would try the K&N Crankcase Vent filter before going another route...
Thanks,
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04-08-2008, 12:11 PM
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CC Member
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Join Date: Apr 2003
Location: Nantucket Island 30 miles off the coast,
MA
Cobra Make, Engine: Superformance#1325, Miller Machine FE
Posts: 487
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Not Ranked
blowby????
What do you mean by blowby??? 
__________________
Everything has a downside, so dwell on the positives. Find humor in the tough times. 
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04-08-2008, 12:17 PM
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CC Member
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Join Date: Dec 2006
Location: Northwood,
NH
Cobra Make, Engine: Unique
Posts: 91
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Not Ranked
oil seepage from current breather on valve cover...
thanks,
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04-08-2008, 12:28 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,448
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Not Ranked
Can we assume you have a splash plate under the hole?
__________________
Jamo
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04-08-2008, 12:36 PM
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CC Member
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Join Date: Dec 2006
Location: Northwood,
NH
Cobra Make, Engine: Unique
Posts: 91
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Not Ranked
Jamo,
I do have a splash plate...
thanks,
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04-08-2008, 12:40 PM
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CC Member
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Join Date: Dec 2006
Location: Northwood,
NH
Cobra Make, Engine: Unique
Posts: 91
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Not Ranked
Just to be clear,
I'm running a Pond 482 with the LeMans Cobra Valve Covers. It seems at higher RPM's I experience this problem....
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04-08-2008, 01:02 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,448
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Not Ranked
I'm running a 482 Shelby with the same covers. I use K&Ns...with the rubber bottoms, but my builder added threaded holes in my valve covers, so they hold/seal with no problem...even at high rpms.
I also have the back of the manifold breather hole hooked up to a traditional oil separator tank (ie., a breather in itself).
__________________
Jamo
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04-08-2008, 01:06 PM
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Senior Club Cobra Member
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Join Date: Feb 2007
Cobra Make, Engine: KMP 539, a Ton of Aluminum
Posts: 9,592
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Not Ranked
Jamo, what intake are you running?
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04-08-2008, 01:17 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,448
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Not Ranked
Shelby......... (dots added to make message long enough)
__________________
Jamo
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04-08-2008, 01:30 PM
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CC Member
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Join Date: Apr 2003
Location: Nantucket Island 30 miles off the coast,
MA
Cobra Make, Engine: Superformance#1325, Miller Machine FE
Posts: 487
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Not Ranked
OK High rpm only
No PCV valve?
Have you ever run the engine without the valve covers on to adjust the valves? How much oil is in the heads? Does the oil drain back to the crankcase quickly?
Our engines are nothing more than an air pump and if the crankcase is not under a certain amount of vacum all that oil spashing around. Positive Crankcase Ventilation
Do the breathers have a wire mesh under them to filter out the oil?
I am sorry for all the questions but I have been thru this before.
I hated to see even a drop of oil anywhere.
__________________
Everything has a downside, so dwell on the positives. Find humor in the tough times.
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04-08-2008, 01:44 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,448
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Not Ranked
Nantucket...you didn't address your post to someone in particular.
Personally, I'm not running a PCV...does just fine without it like they did before PCVs came along. 
__________________
Jamo
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04-08-2008, 02:20 PM
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CC Member
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Join Date: Apr 2003
Location: Nantucket Island 30 miles off the coast,
MA
Cobra Make, Engine: Superformance#1325, Miller Machine FE
Posts: 487
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Not Ranked
Sorry to Rosco
I think you should run a PCV or limit the flow of oil to the heads.
Jamo, It is well know from looking at you avater that you have adequate ventilation. 
__________________
Everything has a downside, so dwell on the positives. Find humor in the tough times.
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04-08-2008, 02:24 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,448
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Not Ranked
Yes...yes I do indeed. 
__________________
Jamo
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