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Gasket sealer

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BigYoung

02-12-2015 10:49:42

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My exhaust and valve cover gaskets are in and am ready to install.

Plan to replace 2 rear manifold mounting bolts with studs to match the front 2 and use brass nuts as recommended here.

I have Permatex Aviation Form-A-Gasket sealant liquid to use on the cork valve cover gaskets.

What do you guys recommend for the exhaust manifild gaskets? Spray Copper Coat? Getting my stuff at NAPA.

Also, I'm guessing the ports in the bottom of valve gallery lead into the oil pan? I poared ATF thru plugs holes a year ago while the N was stored and the valves are not sticking, i thought I would spray a little more carb cleaner and Kroil on the valves before I close it up?

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Ultradog MN

02-13-2015 02:27:30

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Re: Gasket sealer in reply to BigYoung, 02-12-2015 10:49:42

I don't use any kind of dope, pucky, glue or sealer.
Except; I use a couple of small dabs of silicone where you have two gaskets meet - like where the block and timing cover meets the pan.

third party image

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GB in MT.

02-13-2015 02:44:50

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Re: Gasket sealer in reply to Ultradog MN, 02-13-2015 02:27:30

Jerry;

Where'd ya get those nice tools from....OH,....Rod must not be using the customer scan, anymore?????

Any more new cats in yer shop??? :lol: :lol: :lol:
GB :roll:

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Hobo,NC

02-12-2015 19:08:36

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Re: Gasket sealer in reply to BigYoung, 02-12-2015 10:49:42

Dob it up with what ever and lean from you mistakes...
Most here dream up chit and never learn a damm thang...

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WW2N

02-12-2015 19:36:51

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Re: Gasket sealer in reply to Hobo,NC, 02-12-2015 19:08:36

??? Have you been in the corn squezzzzns HoBo, You know NASCAR dont allow even you race car certified mechanics doing that in the pits. wink.

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Ken(Ark)

02-12-2015 19:01:56

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Re: Gasket sealer in reply to BigYoung, 02-12-2015 10:49:42

Quoting Removed, click Modern View to see

High temp copper silicon will flex with the expansion and contraction of the manifold .

Uncured silicon can help a cork valve cover gaskets squish right out of place .

I have seen a lot of silicon build up on the inside of intake runners when pulling off an intake ( 1/8" - 1/4" beads ) I have also seen lots of oil pump pick up screens (modern engines) with plugs of silicon that has worked its way loose from an excessive application . Spray Copper Coat is great on most paper / solid gaskets .

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ZANE

02-12-2015 15:38:27

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Re: Gasket sealer in reply to BigYoung, 02-12-2015 10:49:42

No glue on the exhaust gaskets.

Zane

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Tall T

02-12-2015 12:47:17

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Re: Gasket sealer in reply to BigYoung, 02-12-2015 10:49:42

I use that Aviation Permatex a lot too.

My advice is to only use the sealant on the valve cover side of the gasket; i.e., don't glue it to the head. You'll be glad later. :)
T

P.S.

Next time in, clean off the head mating face of that gasket with laquer thinner and use something like GaskaCinch on it if need be. . . like if it was weeping a little.

I've had my old International valve cover off and on about 3 times, using this method where it is stuck to the cover, but siliconed to the head. Cheap eh! :) The truck just sits around here anyway.

Also with valve covers etc., "evenness of tightening" is just as important, if not more so, that the degree of tightness.
This post was edited by Tall T at 12:55:57 02/12/15.

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soundguy

02-12-2015 15:14:05

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Re: Gasket sealer in reply to Tall T, 02-12-2015 12:47:17

On a n I don't think there's any chance he'll be gluing the valve cover gasket to the head..... block maybe.... :-)

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Tall T

02-12-2015 18:19:37

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Re: Gasket sealer in reply to soundguy, 02-12-2015 15:14:05

DOH!

I did it again.

I must have OHV vision -- it's like tunnel vision. :D

How can you tell the only flatheads I ever had was in the '52 Pontiac I rebuilt long ago.

Sorry about the dead air space between my ears.

Or like Walter Brennan (Grandpa McCoy) said once,

"If my brain exploded it wouldn't be enough blow my hat off."

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soundguy

02-13-2015 08:01:56

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Re: Gasket sealer in reply to Tall T, 02-12-2015 18:19:37

I's just poking fun at ya. No worries. We all knew what ya meant.

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ObsoElitist

02-12-2015 11:58:11

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Re: Gasket sealer in reply to BigYoung, 02-12-2015 10:49:42

I like "GaskaCinch" because it goes on like rubber cement, and peels apart easily, allowing multiple re-use of that valve cover gasket.

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WW2N

02-12-2015 11:00:40

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Re: Gasket sealer in reply to BigYoung, 02-12-2015 10:49:42

Spray copper is ok and a thin layer of silicone on valve covers if you want but I have done both without. Check # 4 exhaust port for erosion.

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