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Discussion Starter #1
I had an oil leak which I thought was my new valve cover, received new chrome cover from Summit, (have new summit heads as well) installed with new gasket (rubber), started car and notice small black oily film (spot) at rear of head near corner and above last exhaust port below lip. It almost looks like it may be coming from header. I see a small amount of smoke but can't tell if it's coming from the header or valve cover. I can't imagine smoke from valve cover gasket area and it doesn't really look like oil is running out from valve cover. Will a header gasket leak blow small amount of oil out and onto head?
 

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There shouldn't be any oil comming frome the header gasket. Oil leaks tend to appear on the bottom rear corners of the valve covers. Try and isolate the location of the oil leak. Use a Q-tip or a clean paper towel and wipe between the head and the valve cover gasket. Start at the highest points, not where the oil is obviously collecting. If you need to remove the cover again make sure there is no warpage, put it on a flat surface and check. Check around the intake as well as the rear of the block where you're oil pressure guage hooks into. Good Luck!

Ken
 

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Using reinforcements on a stamped steel cover help and exchanging rubber gaskets for cork/neoprene material, chrome is hard to seal.

http://www.summitracing.com/parts/MIL-85300/?image=large

Remove the gasket from the cover, clean with lacquer thinner or BraKleen®, and seal the gasket to the cover with Mopar RTV, a small bead and install cover(s). Don't overtorque the bolts.
 

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Discussion Starter #4
I didn't think oil would be coming from the header gasket. I have the hold down fasteners. The other side is fine. The first install was with the cork gasket with gasgacinch, that leaked then got the rubber ones (figured that would be better) used the gasgacinch, still leaked, then tried blue rtv gasket sealant and it still leaked. Figured I had bad valve cover, sent that back and got another one. Used the other new rubber gasket and gasgacinch, seemed ok until warmed up, then very small spot showed up. I have the valve cover hold downs and the t-handle valve screws. Should I get the cork gaskets again and use the blue rtv gasket as well, this is really pissing me off. I don't think I over-torqued them.
 

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Take cover and with no gasket and RTV, place the cover on the head.
Now take a 0.005"-0.010" feeler gauge about the cover-to-head junction to see if they is not any great distortion of the steel cover needing attention with a hammer and straightedge. The oil could be coming the length of the cover as the rocker arms splash the oil about inside, so you might look there also.

One trick I did was to lay a thick bead on the head surface and let it cure overnight.
Then, set the cover on - RTV becomes a great reusable gasket.
 

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Discussion Starter #6
These are brand new covers and they look clean. I used to use just rtv for gaskets, maybe I'll try that.
 
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