I've used Permatex " High Tack " in both spray and can types. This is designed
for gasket sealing and will hold the gasket in place too. You must clean &
remove all traces of old gaskets and oils, then apply & let dry. This has worked
for me for 20+ years on the alpine, including the infamous side ( lifter )
cover......
brian steel wrote:
> hi all i have noticed a lot of questions/comments concerning sealing
> products, i am a ford dealership mechanic and these are the procedures
> according to me as used in our shop. RTV ULTRABLACK use on all 4
> cylinders, it is high temp and 02 sensor safe. there is only 1 silicone that
> is better and it is RTV ULTRACOPPER you can use this on almost every thing,
> even use this on exhaust components such as exhaust manifolds, very high
> temp, 02 safe. DO NOT USE SILICONE AS A COOLING SYSTEM GASKET IT WILL LEAK
> 90% OF THE TIME, SILICONE DOES NOT HANDLE HYDRAULIC PRESSURE VERY WELL. DO
> NOT USE SILICONE ON GASKETS, AS YOU TIGHTEN THE GASKET
> DOWN THE GASKET WILL SLIDE AND SOMETIMES TEAR OR SQUEEZE OUT OF THE SURFACE
> IT IS SUPPOSED TO BE SEALING!!! I HAVE SEEN IT HAPPEN. be carefull when
> using rtv silicone, both surfaces must be VERY clean, use a methyl hydrate
> based cleaner such as brake clean and use surgical gloves and safety glasses
> when cleaning if you get brake clean on your skin it really dries it out,
> and it really burns your eyes, if you get it in your eyes flush with water
> immediatly. rtv also skins off in a very short time make sure you have
> everything prepared properly, and read the instructions on the silicone very
> carefully, some silicones skin off in as little as 5 minutes. use common
> sense when applying silicone, if you mating surfaces are very flat and the
> gap you need to fill is very small use a thin application silicone also
> works well when you need to fill a larger gap, i have used it as end gaskets
> on v8 intake manifolds the gap is pretty big probably 1/4 inch, as long as
> everything is prepared properly and you apply the proper amount of sealant
> you will never have a problem, i find it better than using the thick cork
> end gaskets because the cork gaskets get dried out with heat and eventually
> leak, silicone will not be affected by the heat. please note on all the
> newer engines gaskets are getting fewer and fewer and the use of rtv is more
> and more, this is very good stuff when used properly.
> ANAROEBIC SEALER ford part#cxc79 is an excellent sealer for bolts etc. it is
> better than pipe sealant because it does not totally harden and it does not
> need air to cure, sometimes after applying pipe sealer (white stuff) it
> dries very hard and can be hard to remove the bolts and i have seen it chew
> up the threads in alluminum, we also use anarobic sealer to seal main
> bearing caps if you have trouble with oil migrating out of the engine
> through the machined surfaces of the end cap.
> brian steel vancouver bc
-- Art Blackwell Denver, CO" Even in the future nothing works " Dark Helmet " Spaceballs "
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