indy cylinder head valve cover breathers
#2666832
06/17/19 11:19 AM
06/17/19 11:19 AM
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Joined: Aug 2011
Posts: 294 indy
70moparmike
OP
enthusiast
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OP
enthusiast
Joined: Aug 2011
Posts: 294
indy
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these came not pre drilled and was wondering if anybody has installed the breathers on these valve covers? the baffles look like they would suck oil, and they told me to drill holes on the covers to mount the baffle plates? all the way through the valve covers, wouldn't they leak and look horrible. any pics of your motors with the breathers installed and maybe pcv on them. thanks moparts
Last edited by 70moparmike; 06/17/19 11:20 AM.
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Re: indy cylinder head valve cover breathers
[Re: 70moparmike]
#2666843
06/17/19 11:26 AM
06/17/19 11:26 AM
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Joined: Jan 2003
Posts: 17,907 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,907
S.E. Michigan
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I installed '70s Mopar type breathers, OEM Mopar breather grommets, and sheet metal baffles. Baffles are held in place by 2 sst allen screws, double nuts, and locktite. You could also weld the baffles in if you wanted.
They aren't the most installer-friendly parts I've ever seen... but once you get them all set up they seem 100% worth the effort.
Rich H.
Esse Quam Videri
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Re: indy cylinder head valve cover breathers
[Re: 70moparmike]
#2666910
06/17/19 01:52 PM
06/17/19 01:52 PM
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Joined: Jan 2003
Posts: 17,907 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,907
S.E. Michigan
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did you have to drill holes all the way through the valve covers for the baffles? Yes. I decided that the bolts wouldn't have enough thread engagement otherwise. Not everyone would agree
Rich H.
Esse Quam Videri
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Re: indy cylinder head valve cover breathers
[Re: 70moparmike]
#2666987
06/17/19 07:32 PM
06/17/19 07:32 PM
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Joined: Aug 2003
Posts: 43,285 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,285
Bend,OR USA
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did you have to drill holes all the way through the valve covers for the baffles? I've drilled and tap the bosses for #6x32 screws (CRS the length, 1/4 to 1/2 inch ) and used small flat washers under a piece of flat thin aluminum sheet with red Locktite without going through to the top I'm going to have a weld in baffle to stop my vacuum pump from sucking so much oil into the surge tank today on a set of cast aluminum valve covers that may be a set of no name Indy covers,I'm not sure where they came from though I used a Moroso vacuum pump fitting that has 3 sets of three 1/8 holes on the flats of the fitting facing the outside edge of the valve cover for the suction side, I'm really surprised on how much oil it being suck into the fitting into the GZ vacuum pump, probably around two to four ounces a 1/4 mile run Hopefully the baffle will stop that oil from being sucked out of the motor
Last edited by Cab_Burge; 06/18/19 11:03 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: indy cylinder head valve cover breathers
[Re: cl440]
#2667137
06/18/19 10:27 AM
06/18/19 10:27 AM
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Joined: Jan 2003
Posts: 10,044 MN
JERICOGTX
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,044
MN
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Moroso screw in breathers.
69 GTX
68 Road Runner
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Re: indy cylinder head valve cover breathers
[Re: 70moparmike]
#2667175
06/18/19 12:25 PM
06/18/19 12:25 PM
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Joined: May 2005
Posts: 2,007 Apollo, PA.
B1MAXX
top fuel
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top fuel
Joined: May 2005
Posts: 2,007
Apollo, PA.
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this is going to be a street/strip motor. will a pcv work with the slit one very well? thanks moparts yep put the slit like this....the pcv goes in the open one its a different size.
Last edited by B1MAXX; 06/18/19 12:31 PM.
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