I tried a search but came up empty handed. Local parts store can order a rubber or a cork gasket. Which one would seal better with a stock cover?

Thanks

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70 Dart, 360, 727

DEFINITELY use the rubber one.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

OK, great, should I put it on dry or use silicone on it?

Thanks

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70 Dart, 360, 727

Dry. And make sure the lip around the cover is straight as can be. I haven't used the aftermarket rubber ones, but the dealer rubber ones are good.

OK great, thanks guys.

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70 Dart, 360, 727

Anybody want to discuss Spark plug indexing. I know Mike has mentioned it. What effect or benefits are to be obtained from this? Also, Dan discussed leaving the gasket off the plugs to get the proper penetration into the chamber. Any numbers or details on that. What are the consequences when you put the gaskets on, which I am certain I did. (I promise I will remove them Dan ) Boy I can hardly wait for warm weather.
Sam

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No, NOT DRY!!! but NOT Silicone either....

Use white lithium grease on the gasket (both sides) so it can slide around a teeny tiny bit when you install (no chance of binding or tearing) and it makes sure that it won't stick to the head when you remove the valve cover for valve adjustments. You can get quite a few uses out of the gasket this way.

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Certainly, but not in this thread, which is about valve cover gaskets. Please start a new one.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I guess I'm the only one who hates rubber gaskets. I prefer cork with some hylomar smeared on both sides. They don't split when you tork down the VC bolts. I have never gotten a rubber to not split when torked down.

It's inch-lbs, not ft-lbs.............

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

I've used several rubber gaskets, some of them repeatedly, and nothing happened. Its soft pliable rubber, not sure how one could split. It remains soft even after age, or at least mine did. Again, these are mopar dealer gaskets not aftermarket. A hair or two past finger tight, just enough to compress the rubber is all thats needed

As long as the tabs are intact and are fitted in the cover notches it shouldn't be going anywhere. I've had aftermarket cork gaskets have the tabs cut slightly off. Wouldn't fit on the cover and the cork didn't stretch so I had to cut the tabs off, and then it became a pita to line up right when putting cover over the head.

The only way the rubber would split is if they are either really old and hard or torqued too tightly. A fresh gasket under a properly torqued valve cover should be no sweat.

PS. recommended torque for the valve cover bolts is 40 in-lbs.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

Like many gasketed joints it will have problems if the surfaces are not as straight as possible. It the cover is tweaked it is going to leak no matter what gasket you use. I prefer cork valve cover gaskets but only the felpro's. I have seen many that are cheap and not worth using. The rubber ones have worked for me as well, but seem to need a little more pressure to conform to uneven surfaces, and there are always some uneven surfaces with valve covers. Using Hylomar HPF is probably the best thing you can do with either gasket type. It seals great and does not dry or set like a glue. The gasket will peel right off and you can clean the hylomar off with denatured alcohol or carb spray. If you don't use Hylomar, use grease or nothing at all, but no glue or silicone.

So where can I get this Hylomar stuff at?

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70 Dart, 360, 727

Should be at any auto parts store....................

(it's blue and usually comes in a blue tube too.....)

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes