001mustang

i've installed intakes w/ and w/o the end cork gaskets.

both methods work ok but can develop a small leak at block/head corner over time.

what is your favorite method to seal intake manifold?

boeing747arowair

Ive had good luck with RTV on those ends/corners!

001mustang

w/ or w/o the short skinny end gaskets on the block?

last time i left those gasket off and used 1/4" RTV. did pretty good. after a few years it started weeping ever so slightly.

boeing747arowair

001 Ive only done it with out the gasket. coat it well somewhat create a "dam"

001mustang

last time i installed timing cover i used the short cork gasket on the oil pan w/ RTV; it didn't leak.

i'm tempted to install intake w/ all gaskets and all rtv to see how it holds up.

i have never tried all rtv on all intake manifold gaskets b4.

boeing747arowair

Shouldnt have a problem though everytime i have used cork I use Permatex Copper Spray a Gasket. Never had a problem with that

http://www.permatex.com/products/Aut...ve_Sealant.htm

001mustang

starting to come back to me.

i recall hearing that a slippery cork gasket could pop out while torquing intake.

not sure if that's a pretty wives tail or not.

boeing747arowair

yes ive heard that plenty a times

jp1967stang

If i remember right in the directions for installing a edelbrock manfoid it says not to use the end gaskets instead use rtv

PaulS

Coating the cork (or rubber) end gaskets with RTV will make them slide like a well lubricated bearing pad. I use the end gaskets, a dab of "Ultra-Blue" in the corners and a thin coat of Loc-tite #518 top and bottom of the gaskets. the 518 will cure very quickly as soon as there is no air near it - the exact opposite of RTV. The "Ultra-Blue" is more oil resistent than standard RTVs and will maintain a seal longer. The 518, if given 30 seconds to cure, will not let the end gaskets slide around. I also use 518 around the water and port openings (.010" film) just to give extra protection against leaks.
You should always have clean and slightly roughened surfaces whan using gaskets.