Copper coating ls9 head gaskets

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Nov 15, 2012 | 03:41 PM

ktm8125

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Staging Lane

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From: Mansfield ohio

Copper coating ls9 head gaskets

Has anyone copper coated ls9's or just leave them plain

Nov 15, 2012 | 03:57 PM

Ferocity02

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Do a search, people have done both with good results either way. I put mine in dry, no issues so far.

Nov 15, 2012 | 04:13 PM

Sales@Tick

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From: Mount Airy, NC

I would copper coat.

Nov 15, 2012 | 04:39 PM

PewterZCar

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From: Lee's Summit, MO

I copper coated mine with great success

Nov 15, 2012 | 04:56 PM

RedRocketZ28

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From: Madrid, IA

Didn't coat mine.

Nov 15, 2012 | 04:58 PM

9sectruck

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From: jefferson city MO

i copper coated every layer, drilled the pop rivets out, laid them on a box in the same order as they came apart, as i coated each layer on both sides i installed them on the engine.

Nov 15, 2012 | 05:09 PM

o2camaross

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What's the point of copper coating them? And where do you buy the coating? I just put mine in dry

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Nov 15, 2012 | 05:20 PM

helga203

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From: chicago

Psi

Quote:

Originally Posted by AutomagicLS1

dry here no issues

How much boost you guys running????

Nov 15, 2012 | 08:23 PM

#10

Jose93z28

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From: Denver, Colorado

I installed mine dry, havent got it running yet but im planning on boosting around 15 psi, they say wetter its better lol! But you can pick up that stuff from advance auto, I see a lot of tunners asking for it for turbo hondas and wrx's

Nov 15, 2012 | 09:06 PM

#11

driven87

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installed mine dry as well and have seen upwards of 24psi here and there

Nov 15, 2012 | 09:12 PM

#12

T76s10

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From: superior, wi

mine are also dry.

Nov 15, 2012 | 09:16 PM

#13

Stangkilr

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From: Kansas City, Mo

Copper coated mine and never had any problems

Nov 15, 2012 | 09:29 PM

#14

9sectruck

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From: jefferson city MO

looking to push mid-high 20s on my lil 5.3 on e85, i figured it cant hurt to coat them all

Nov 15, 2012 | 10:56 PM

#15

slowride

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From: New Hartford, IA

Copper coating is for water leaks, it's not going to help a bit with combustion pressure. GM gaskets seal well on most block surfaces. Other gaskets tend to leak more if the deck surfaces are not REALLY smooth so coper spray will help here. You should always be shooting for a nice low RA number(surface finish) on anything high performance with MLS gaskets.

Nov 16, 2012 | 02:09 AM

#16

SirNemesis

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From: Geelong, Australia

I had my block and heads machines smooth, so dry install here. 20psi, all good.

Nov 16, 2012 | 05:36 AM

#17

helga203

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From: chicago

Quote:

Originally Posted by 9sectruck

i copper coated every layer, drilled the pop rivets out, laid them on a box in the same order as they came apart, as i coated each layer on both sides i installed them on the engine.

I see you had an s10 with 27psi what did you use on that engine???? Did it last?

Nov 16, 2012 | 06:29 AM

#18

ktm8125

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From: Mansfield ohio

I ended up copper coating mine and istalled last night alli have is a jy 4.8 the rings are gapped and a eBay turbo kit with a on3 76mm

Nov 16, 2012 | 06:31 AM

#19

02anti_vnm

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From: Roanoke, Va

I actually posted a thread just like this last year and I got a pretty firm NO from some of the bigger names in this section. Made since not to since the ls9 gaskets come factory with a thin coat of rubber around the holes. The felpros and the cometics I had used before were just metal on metal do I coated them. But with the ls9s I say no. However obviously others had and have had great success with it so I say you'll be fine either way...