To seal or not to seal, intake manifold gasket

[yellow68pony]

I've had a couple of people say to use Silicon Gasket Sealer in place of the cork seals when replacing to the intake manifold gasket on a 68 289 - 2V. Anybody have an opinion on this? Thanks

 

[paintballtommy]

if your talking about the cork that seals the back and front of the intake then yes i totally agree. use the ultra black as it will hold up agains the oil in the lifter valley. use a big thick line of it and slap it on there finger tight. after bout 5 minutes then i tourque it down. make sure your intake gaskets seal too cdause you dont want water getting into your lifter valley an into the oil.

later,
tommy

 

[thehueypilot]

I would recommend throwing the cork gaskets as far as you can fling them. I use a new type of gasket sealer called "the right stuff". This is the same gasket sealer that the big three all use today. It works great and I have never had a leak since using it.

 

[69stanger]

Ive taken my intake manifold off twice and both times I have used the seals that came with the gasket set and have had no leaks thus far.

 

[Mr44666]

I agree with using them. New end seals even come with adhesive backing so that they don't move around.
-Dave

 

[HistoricMustang]

Ditto here on not using the cork! Save it for the wine bottles.

HistoricMustang
www.historicmustang.com

 

[bchampion]

Intake Gasket Sealer

Hell yes. Toss those cork things in the trash and put down a good bead of RTV Silicone front & rear. Those cork things will blow and then all of a sudden, walla, you have an oil leak.

 

[TT670]

I agree the gaskets suck, silicone is all Ill use in that application.

 

[Vinyl66]

I just installed a performer rpm intake and used the cork end pieces. Well, the rear one moved a little and didn't seal. Then I threw them in the trash and used silicone with no problems.
I say trash 'em.

 

[yellow68pony]

Thanks to everyone that replied. I count 6-2 in favor of silicon.

 

[67coupestang]

only use the cork if they have the sticky, not all do. i prefer the chuck cork and caulk method myself though