89lx-ls1

iTrader: (23)

I know this is a pretty big subject but just asking,
Spray the head gaskets with copper spray or not??

Thanks in advance.

89lx-ls1

iTrader: (23)

ttt>>>>>>>>>>

CAT3

iTrader: (9)

I think I will be spraying mine, first time to install them and dont want to have to do it all over again.....call me "internet hype on Cometics leaking scared."

as35thss

I would spray them. I sprayed mine, with no problems. You take a big chance if you don't.

smask04C5

iTrader: (1)

lightly sprayed mine, no problems

Mirek

No spray, no problems.
OEM headbolts.

89lx-ls1

iTrader: (23)

So 3 spray and 1 no spray I guess I will spray mine and I am also using arp studs.

frodo84

iTrader: (11)

Any downside to using the copper sealant to anyone's knowledge?

bigdsz

iTrader: (1)

If the Cometics are not sprayed supposedly they are reusable, which I think some would question. Sprayed, not reusable.

ArcticZ28

iTrader: (14)

They actually are reusable even if you sprayed them, a lot of people have reused em. The only downside to spraying them is cleaning the crap off the mating surfaces each time you take the heads off and put em back on to get a good seal. If you don't foresee that happening too much, then go ahead and spray them. But, if you are gonna be pulling them frequently, might as well try it without spraying b/c you're gonna be pulling them a lot anyways so it can't hurt. I personally sprayed mine the first time and haven't had any problems. I played it safe b/c I didn't see my heads coming off anytime soon. Up to you though.

LS1 Swapper

Make sure you really clean the block and heads of the old gasket, I mean with a razor or you'll probably leak. Also make sure you put them on correctly. No sealant is needed or recommended.

S10xGN

iTrader: (11)

Billy Anderson over on Turbobuick.com (who builds 8 second turbo regals) says his first install is dry, and he reuses up to four times with the reuses being sprayed with a light coat of Hylomar.

ArcticZ28

iTrader: (14)

Well using them a 3rd time with spraying is like using them the first time with spraying. So, that just proves you can do it either way, but if you want to play it extra safe, then spray it. They are reuseable both ways.

2001 Pewter WS6

iTrader: (43)

Ditto here...

Dixit

iTrader: (1)

I didnt spray mine and they are leaking slightly which Im removing the heads again this week to probably just ditch the Cometics and go back to GM MLS gaskets.

Dixit

Z06-Dave

No spray no leaks...so far...........

denscor

do you spray the mls ? or put them on dry!

Byter

iTrader: (1)

I didn't spray them when they were new (i.e. the first time I used them). I sprayed them the second time. No leaks either way.

smask04C5

iTrader: (1)

Spray lightly and reuse several times, as long as deck and heads are clean and flat

89lx-ls1

iTrader: (23)

Thanks guys they are installed now we will see some time soon when ever I get the powerhouse in my car