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How much Copper Spray on Gaskets?

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Old Sep 8, 2006 | 12:09 PM
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Default How much Copper Spray on Gaskets?

Well, how much of this stuff do you use. A light coat once over, or several thick coats so you get a nice copper color? Never used it before. Thanks!
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Old Sep 8, 2006 | 12:15 PM
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I used just enough cover the gasket, so the whole thing is copper looking, dont put so much on that it starts dripping but enought to cover both sides. GM MLS gaskets or Cometics?
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Old Sep 8, 2006 | 12:17 PM
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Originally Posted by dalejr8ls1
I used just enough cover the gasket, so the whole thing is copper looking, dont put so much on that it starts dripping but enought to cover both sides. GM MLS gaskets or Cometics?
Cometics, they say to install them dry, but everyone here seems to spray them down.
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Old Sep 8, 2006 | 12:18 PM
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Originally Posted by Ferocity02
Cometics, they say to install them dry, but everyone here seems to spray them down.
I installed mine dry. I did make sure the deck was spotless.
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Old Sep 8, 2006 | 12:32 PM
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I installed them w/ copper spray, under the pressure they are put under it doesnt matter, but it seems to be an insurance policy in a way...do it to make sure that baby is sealed.
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Old Sep 8, 2006 | 03:04 PM
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The thing is I might have to swap the stock heads back on for smog, so I don't want to deal with a sticky mess when that time comes around.
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Old Sep 8, 2006 | 03:15 PM
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i sprayed my cometics, and after a few thousand miles i tore all down, and i noticed that the cometics started to eat into the heads, not good. my machine shop told me that its a common problem when people spray the cometics with copper spray, he said install dry, with a good flat surface.
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Old Sep 8, 2006 | 07:01 PM
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Originally Posted by RyneZ06
i sprayed my cometics, and after a few thousand miles i tore all down, and i noticed that the cometics started to eat into the heads, not good. my machine shop told me that its a common problem when people spray the cometics with copper spray, he said install dry, with a good flat surface.
Interesting, since the copper spray has been used on aluminum heads for years, were they eating chemically or from friction of expansion and contraction?
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Old Sep 8, 2006 | 10:35 PM
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I installed mine dry. No leaks so far.
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Old Sep 8, 2006 | 11:02 PM
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I'm going to go with dry. If they leak I will take the heads off and spray them.
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Old Sep 8, 2006 | 11:10 PM
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copper spray doesnt eat aluminum
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Old Sep 9, 2006 | 02:20 AM
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Originally Posted by Ferocity02
I'm going to go with dry. If they leak I will take the heads off and spray them.
Sounds like the best bet if you have the patience and time to pull em off again if they leak. I have never had a problem with mine and I installed with a light coat of spray. And I've never heard of it eating away at the heads or block.
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Old Sep 9, 2006 | 02:25 AM
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The cooper coat cam right off easliy when I removed my engine from my car with spun rod bearings. And was easy to clean off.
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Old Sep 9, 2006 | 02:29 AM
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whould i be ok to use some of these on my new GM MLS gaskets just ot be on the safe side?
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Old Sep 9, 2006 | 03:43 AM
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Originally Posted by silverZ98
whould i be ok to use some of these on my new GM MLS gaskets just ot be on the safe side?
Not necessary, the GM MLS have sealant already installed as part of the gasket and are not prone to leaks.
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Old Sep 9, 2006 | 05:03 PM
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Originally Posted by JMBLOWNWS6
The cooper coat cam right off easliy when I removed my engine from my car with spun rod bearings. And was easy to clean off.

Same here I used copper spray and when I did a head and cam swap again It took a simple wipe down with carb cleaner
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Old Sep 9, 2006 | 05:50 PM
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Originally Posted by dalejr8ls1
I used just enough cover the gasket, so the whole thing is copper looking, dont put so much on that it starts dripping but enought to cover both sides. GM MLS gaskets or Cometics?
That is the way I did mine with the permatex copper spray.Make sure she stays sealed up!
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Old Sep 9, 2006 | 07:57 PM
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Well I went ahead and sprayed mine with the copper stuff. I figure if it's easy to clean off then what the heck.
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Old Sep 9, 2006 | 11:08 PM
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so u guys dont recomend the copper spray on the gm mls gaskets
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Old Sep 10, 2006 | 12:04 AM
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Originally Posted by MiaSSmaro98
so u guys dont recomend the copper spray on the gm mls gaskets
Thats what is on my 6.0L gaskets bro!
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