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-   -   Valve Cover Breather Solution Needed (https://www.thevettebarn.com/forums/showthread.php?t=2786)

FRC Joe 05-03-2010 7:35am

Valve Cover Breather Solution Needed
 
I need to come up with a different solution for my valve cover breather. I'm running the GMPP "Chevrolet" valve covers, which have a plain 1.22" dia hole on the pax. side cover. I'm currently using a K&N breather filter that I've modified the base of mounted directly in the hole. It's just a standard K&N part that has no baffles etc. and the problem seems to be that since the breather is mounted at an angle, the oil mist trapped by the filter element is dripping out of the low side of the breather. Here's a pic of the arrangement, you can see where the oil has been.

http://members.cox.net/joe.creecy/paxsideview.jpg

What I'm looking for is either an attractive looking push-in style cap with built baffles and breather, or an elegant solution to go from a plain 1.22" hole to AN-6 hose and then to a remote breather can. I have 1.00" and .75" grommets for the valve cover hole.

I was thinking maybe a 1/2" NPT to AN-6 elbow, screwed into the .75" grommet. The O.D. of 1/2" NPT is .840", so it'd be a tight fit for sure. Anyone have a line on a better soltion? Maybe a 1.00" or .75" hose barb to AN-6 adapter elbow? Any other suggestions are appreciated!

Eagleeye 05-03-2010 12:09pm

What does the cover on the driver's side have for openings. One side should be "straight through" for oil filling and the other cover should have an oil restricting baffle under the cover and mount the vent over that one. Someone else chime in here too !

Cobra4B 05-03-2010 12:29pm

Joe we had this issue on the Panoz running VC breathers on each side.... we ended up getting new valve covers and running AN fittings/lines to a vented catch can.

Original setup

http://i39.photobucket.com/albums/e1...s/DSCF2980.jpg

Re-done... not as trick/pretty as the composite covers, but they work, were cheap, and don't crack/leak!

http://i39.photobucket.com/albums/e1...s/DSCF3264.jpg
http://i39.photobucket.com/albums/e1...s/DSCF3266.jpg

FRC Joe 05-03-2010 12:48pm

Quote:

Originally Posted by Eagleeye (Post 34705)
What does the cover on the driver's side have for openings. One side should be "straight through" for oil filling and the other cover should have an oil restricting baffle under the cover and mount the vent over that one. Someone else chime in here too !

I'm running the solid cover on the other side. These GMPP covers have no baffles under them at all, although there are some bosses that could be tapped and used to mount something homemade. I think what I'm going to do is use an old skool AC Delco FB-59 push in plastic breather in the short term, at least until after the event in Indy next week. Afterwards I'll find a place to mount a remote breather can and either weld an AN-6 weld fitting directly to the VC, or use a NPT threaded 90 adapter in a grommet. I may even consider buying another blank cover and using that for an even cleaner appearance.

WKMCD 05-03-2010 3:56pm

Here are the same VC's with a bit of modification...:D

AN bungs added. A line from each VC T's into the 4 inch downtube. Also replaced the push in filler with a bung and screw in cap.

http://i54.photobucket.com/albums/g9.../VSEngine8.jpg

http://i54.photobucket.com/albums/g9.../VSEngine1.jpg

http://i54.photobucket.com/albums/g9.../VSEngine4.jpg

http://i54.photobucket.com/albums/g9.../VSEngine7.jpg

Munch 05-03-2010 5:51pm

AN to remote can would be sweet. It's not like you'd have to put the can anywhere visible.

FRC Joe 05-04-2010 11:57am

Quote:

Originally Posted by WKMCD (Post 34721)
Here are the same VC's with a bit of modification...:D

AN bungs added. A line from each VC T's into the 4 inch downtube. Also replaced the push in filler with a bung and screw in cap.

You engine compartment is tasty as awlays :cheers: I love that cap. I wish I could find a push in version of it.

Quote:

Originally Posted by Munch (Post 34734)
AN to remote can would be sweet. It's not like you'd have to put the can anywhere visible.

Finding the spot I want to put the can, even hidden, is proving difficult. Most of the breather cans I'm seeing are 9"-13" tall and 4" in dia making them unsuitable for use in the space infront of the rad. The areas behind the coves have extra crap already mounted as well. Maybe the solution is to buy another Elite Engineering catch can to match my current one, and convert it into a breather can. Bore a 1.22" hole in the top and mount my existing K&N filter to it. I'd need to come up with a new 2 place bracket for it, but that shouldnt be too hard. Hmm... Snug it up right next to the can on the right.

http://members.cox.net/joe.creecy/IC1.jpg

I wonder if I could get EE to sell me the can portion only for less bux. I hate to spend $169 only to toss the lines, bracket, fittings etc.

Peter Pan 05-04-2010 1:55pm

I use a wrist band on my breather, black one it works great for mehttp://i29.photobucket.com/albums/c2...smileycool.gif

I like those covers can you pm me the part number, I need something to send out for powder coating and I like those, what did they cost:cheers:

WKMCD 05-04-2010 4:56pm

Quote:

Originally Posted by Peter Pan (Post 34841)
I use a wrist band on my breather, black one it works great for mehttp://i29.photobucket.com/albums/c2...smileycool.gif

I like those covers can you pm me the part number, I need something to send out for powder coating and I like those, what did they cost:cheers:

Steve,

I thought you already had these VC's?????

They are the GMPP valve covers. I got them from SDPC. I think they were a little over $200.

Sneaks 05-04-2010 7:07pm

Quote:

Originally Posted by WKMCD (Post 34721)
Here are the same VC's with a bit of modification...:D

AN bungs added. A line from each VC T's into the 4 inch downtube. Also replaced the push in filler with a bung and screw in cap.

http://i54.photobucket.com/albums/g9.../VSEngine8.jpg

http://i54.photobucket.com/albums/g9.../VSEngine1.jpg

http://i54.photobucket.com/albums/g9.../VSEngine4.jpg

http://i54.photobucket.com/albums/g9.../VSEngine7.jpg

The problem with this setup is your dispstick keeps disappearing. :rofl:


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