Thread: gaskets and silicone

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what's the best way to seal up water pumps, thermostats housings and such? is it still necessary to use those paper gaskets plus silicone or just silicone? is there some type of gasket-maker that is better?

Originally Posted by bulldogcountry1

what's the best way to seal up water pumps, thermostats housings and such? is it still necessary to use those paper gaskets plus silicone or just silicone? is there some type of gasket-maker that is better?

I like to use the paper gaskets with copper rtv on both sides of the paper.

I get razzed everytime I post this info ,but I use aviation gaskett shelac on stuff like that.It seals pretty good,only downside is old gaskett removal.

i find that if i use red gasket sealent and 2 paper gaskets on my 350 thermostat that it will not leak.

have always used paper gasket with Indian Head cement

me, clean surface good, paper gasket w/ no sealer. leak free every time

Originally Posted by Cape Cod Bob

have always used paper gasket with Indian Head cement

Thats close to aviation gaskett shelac...

Originally Posted by shawnlee28

Thats close to aviation gaskett shelac...

permatex form a gasket aviation no.3 i use many things other then this 3m weather strip cement works good to hold gastets down and OMC typ M .hylomar and teflon dope on studs and bolts .i try not to use sillcone much if i do i only use it on one side of the gasket if like a oil pan gasket the sillcone will push out the gasket when you draw down the bolts so i will use 3m cement on the block side to the gasket and then go around the oil pan rail with RTV then draw it down but not to tight then let set up over night then a 1/2 turn more

Originally Posted by DennyW

I always do my Cherokee war dance when I use this.

Pat, you need me to teach you how to do those gaskets, my style. Never had any problems. It takes years to perfect the method.

THANKS i do not dance .i just do a irish jig well i never had any leaky oil pans the cheap pans some times fit up is not to good that were you need the RTV i really do not have any problems if you get your hands on OMC type M you will need dynamite to get any thing off you glue down with it .

I really haven't kept up with the times regarding sealants. I still like good old Permatex # 2, and Hylomar. We just used RTV on my Kids engine because he insists it is more modern, therefore better. I'm still in the dark if that is really true or not. And yes, I always use gaskets, except on the front and rear of intake manifolds, where I put a bead of RTV.

Don

yes i use RTV on the china walls on the intake to or were poor fit up is encountered .if the gaskets has O rings on it i like to put some slip on it like on the intake i will use some white grease or permatex non drying

On my Ford thermostat housing gaskets, I just use plain ordinary good contact cement to hold the gasket on which in turn holds the thermostat in place, in the housing (remember that pot metal housing that you broke at 9:05 on a Friday night? And your girlfriend was waiting for you to pick her up at 10:00 after work at the grocery store. And you didn't make it? ). I have yet to have one leak. Any other gaskets that require a sealer - I'll use the manufacturers recommendations.

Depends on the gasket. Valve covers, High Tack to glue the gasket to the cover, thin coat of silicone on the head side. Intakes get a bead of hylomar around the intake ports, thin coat of silicone around the water jackets (Both sides). Water outlet gets a Victor tuff-cork gasket with a thin coat of silicone on both sides. Header gaskets...Victor Nitro-seal gaskets wiht a bead of ultra copper around both sides of the port.

just my .02

Copper Coat spray for head gaskets. Permatex #2 everywhere else. Every time I have tried RTV I ended up with a leak somewhere.

Originally Posted by DennyW

I always do my Cherokee war dance when I use this.

It takes the same dance to get the part back off too.. and it feels like a war too....