Anybody else have this problem? Just got my new engine going and my new mopar performance valve covers leak like crazy its the 5 bolt LA covers... I have tried cork... they leak then got felpro rubber gaskets and same problem!

I use the Mopar reusable gaskets and have had 0 problems and have had the VC off MANY times.

Someone on here once said the MP cast aluminum valve covers can hit the intake manifold before they touch the cylinder head gasket surface which prevents them from sealing.

I've always done this with good results using good 'ol cork gaskets and stock appearance. Obviously make sure all surfaces are clean and dry. Using 3M gasket adhesive or similar, (follow the directins!) GLUE the gasket to the valve cover. Make sure they're on good and flat, I've laid them gasket down on a clean surface with weight on top to ensure a flat, tight fit. Then RTV the exposed side of the gasket and pop-em on the head. If you RTV both sides the gasket, it will want to squeeze out when tightening the cover down. Just my .02, and probably not the route to go if you have solid lifters and will be pulling the covers to adjust rockers fairly often.

main thing is to prep the head suface along with the VC lips

i use a rag with brake clean to wipe the oil off the haed vc rail

I like the mopar atf/rtv for glueing the gasket to the VC then a thin coat on the gasket head side.

you must let it cure over night and do not over torque the gasket on the install.

in some gasket kits felpro has some thick hard gaskets,you have to crank them down till you feel it crush some or they wont seal.

on my BB I have old cork VC gasket with copper rtv on both side,they got to cure a few weeks before getting run,sealed up tight so far.

with alum VC,i have had to clearance them around the intake runner/head area,also make sure your aftermarket bolts are not to long and bottom out in the holes

I have seen that make them leak more than once

clean and cure time is key to sealing them IMHO

I use a set of rubber/silicone ones...They have a steel band in the center...Been using the same gaskets for 15 years!!!

I use a bead of high temp RTV on both sides of the gasket. Works fine!