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adding PCV #2634593
03/19/19 09:11 PM
03/19/19 09:11 PM
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cincinnati ohio
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mcat4321 Offline OP
master
mcat4321  Offline OP
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cincinnati ohio
i want to add a PVC to these valve covers, what would be my best course of action?

52695009_10217894055133646_8244578930313396224_o.jpg
Re: adding PCV [Re: mcat4321] #2634601
03/19/19 09:28 PM
03/19/19 09:28 PM
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Posts: 36,040
Lincoln Nebraska
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RapidRobert Offline
Circle Track
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Lincoln Nebraska
std setup would be a PCV in one valve cover (plumbed to carb base) & a breather in the other valve cover. Not sure which one would be the best (flow amt) for your app & that is new area for me & I'm sure would depend on the cam etc but there is a pic/info of an adjustable one ($$$$$) on page 3 in Q&A. I would Google it also


live every 24 hour block of time like it's your last day on earth
Re: adding PCV [Re: mcat4321] #2634604
03/19/19 09:34 PM
03/19/19 09:34 PM
Joined: Jan 2003
Posts: 30,947
Oregon
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AndyF Offline
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Oregon
You'll need to remove one of the breathers and replace it with a PCV. If those breathers mount on tubes then you'll need to fabricate a plug to go in the tube so the PCV has a place to mount. You can use a Ford FE screw in type PCV for a custom application like that.

Re: adding PCV [Re: mcat4321] #2634613
03/19/19 09:46 PM
03/19/19 09:46 PM
Joined: Jan 2008
Posts: 2,363
Cotati, CA
Dave Hall Offline
top fuel
Dave Hall  Offline
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Cotati, CA
I know what you're getting at because I have the same setup and every time I wash the car I have to wash the engine compartment as there is hints of oil in the dirt. It doesn't just wipe off. Is that a hemi A;body? Sweet!

Re: adding PCV [Re: mcat4321] #2634627
03/19/19 10:31 PM
03/19/19 10:31 PM
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Posts: 4,457
Washington
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madscientist Offline
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madscientist  Offline
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Washington
Google ME Wagner and order an adjustable PCV valve from them. Anything else is a waste of time.


Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
Re: adding PCV [Re: mcat4321] #2634635
03/19/19 10:48 PM
03/19/19 10:48 PM
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Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
A stock pre 1970 PCV bolt in held with a nut with the stock push on PVC style cap will work fine for your application with the existing K&N breather cap.
All the stock street hemi motors that had chrome valve covers came with chrome PVC caps also scope


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: adding PCV [Re: madscientist] #2634673
03/20/19 06:32 AM
03/20/19 06:32 AM
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Posts: 284
PA
Harry's Taxi 2 Offline
enthusiast
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PA
Originally Posted by madscientist
Google ME Wagner and order an adjustable PCV valve from them. Anything else is a waste of time.


so a $5 just won't work.......why not? a little info with your statement might be helpful.


'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.

NOS-used when losing since 1940.

Re: adding PCV [Re: Harry's Taxi 2] #2634680
03/20/19 07:37 AM
03/20/19 07:37 AM
Joined: Jan 2003
Posts: 17,801
S.E. Michigan
ZIPPY Offline
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Posts: 17,801
S.E. Michigan
1969 and earlier street hemi pcv is the path of least resistance. Take one breather off tbe tube, put the pcv in the tube, run the hose as desired. The valve clips into a metal cap which sits inside the tube.


Rich H.

Esse Quam Videri




Re: adding PCV [Re: mcat4321] #2634716
03/20/19 09:20 AM
03/20/19 09:20 AM
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Posts: 11,890
Benton, IL.
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DaveRS23 Offline
Special needs idiot
DaveRS23  Offline
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Posts: 11,890
Benton, IL.
If you have a completely stock set-up, then a stock PCV would probably suffice. But if the engine has any mods, then an adjustable PCV has some real benefits. Very few things are 'one size fits all'. That is true for PCVs, too.

http://mewagner.com/?p=444

https://www.powerperformancenews.com/tech/an-adjustable-pcv-valve-for-the-street/


Master, again and still
Re: adding PCV [Re: Harry's Taxi 2] #2634765
03/20/19 11:17 AM
03/20/19 11:17 AM
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Posts: 4,457
Washington
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madscientist Offline
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Washington
DaveR answered before I saw this, but, like everything else, the PVC system was a serious set of compromises. An adjustable PCV valve is just that. I've used them to clean up dead stock rebuilds and they are worth it every time. Unless you are so cheap it doesn't matter if you can make it better or not.


Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
Re: adding PCV [Re: Harry's Taxi 2] #2634796
03/20/19 12:09 PM
03/20/19 12:09 PM
Joined: Oct 2007
Posts: 4,205
New York
polyspheric Offline
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New York
Any cam with perhaps10° or more greater .050" duration than stock has greater exhaust contamination of the chamber at overlap, and reduced idle vacuum.
The amount of air admitted by the PCV is added to the air through the carburetor(s), so it affects your idle's throttle plate position w/r/t spark advance and tip-in response
The Wagner allows you to adjust these factors.
One less thing to worry about? Cheap.


Boffin Emeritus
Re: adding PCV [Re: polyspheric] #2634935
03/20/19 06:52 PM
03/20/19 06:52 PM
Joined: Aug 2014
Posts: 562
Ohio
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lockjaw-express Offline
mopar
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Posts: 562
Ohio
If you are running Fuel Injection that has IAC valves, you need an adjustable one...close the throttle plates on your throttle bodies, and then adjust the PCV for half of the idle air needed, and than just barely crack the throttle plates open to get your hot idle for what the FI ECU wants.

My 2 cents...

Re: adding PCV [Re: lockjaw-express] #2634939
03/20/19 07:06 PM
03/20/19 07:06 PM
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Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
I ran two stock type PVC with two breather caps on my old Pump Gas Duster motor that had a small solid roller cam in it, 260 degrees at .050 intake side, 266 on the exhaust side ground on a 108 LSA installed at 1 to 2 degrees ICL installed with a stock type low deck six pack set up. Adding the second PVC made it idle a lot better(more air into the intake) and not surge at or under 1000 RPM up
That combination flat rocked, 10.25 ET at 127.+ MPH corked up with the air cleaner on weighing 3450 Lbs. with driver on Oregon 91 octane pump swill boogie devil


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)






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