Sealant on gaskets?

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Cat Yellow1

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I'm about to put the manifold, flange, and cover over the timing gears. I'm not planning to use a sealant but got to wondering if it would be a good idea. What do you all think? Gaskets are not from Cat.

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Thu, Apr 16, 2020 7:18 AM

bernie

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Several good posts on this you can find under search option. More than I could help with here.

Advance Search “permatex”

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Thu, Apr 16, 2020 8:33 AM

Rome K/G

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Cat sells Permatex hi-tack sealant. or any auto parts store.

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Thu, Apr 16, 2020 8:35 AM

bursitis

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Reply to Rome K/G:

Cat sells Permatex hi-tack sealant. or any auto parts store.

depends on the gasket and application. some are better left without,especially if you need to remove in the future.

D46U straight blade,D46U cat angle blade,allis chalmers AD4 grader and Khoering 404 dragline. D4C 40A,D4 2T and scraper.

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Thu, Apr 16, 2020 9:45 AM

mog5858

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Reply to bursitis:

depends on the gasket and application. some are better left without,especially if you need to remove in the future.

if you feel the need only do one side if you ever have to take it off that way you have a better chance of not wrecking the gasket.

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Thu, Apr 16, 2020 9:56 AM

sheddcanyon

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Reply to mog5858:

if you feel the need only do one side if you ever have to take it off that way you have a better chance of not wrecking the gasket.

I think Squatch253 gives some solid advice on this.

https://www.youtube.com/watch?v=ymlsF2bdEJ8&list=PLW_TtiTWGCaqa-leidqLnhB35AX3g-XUE&index=41&t=0s

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Thu, Apr 16, 2020 10:23 AM

u-joint

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Reply to sheddcanyon:

I think Squatch253 gives some solid advice on this.

https://www.youtube.com/watch?v=ymlsF2bdEJ8&list=PLW_TtiTWGCaqa-leidqLnhB35AX3g-XUE&index=41&t=0s

It's real simple. If you have to use silicone with a gasket to get it to seal something is wrong and it won't seal anyway! Dry gaskets used will let 2 parts bond as one. Put silicone in the mix and your 2 parts will not bond as one. The silicone will let the 2 parts move separate from each other. I absolutely would not use it on a heavy cast block to a heavy cast timing cover? Silicone works real well on your bathtub!

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Thu, Apr 16, 2020 1:05 PM

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