Best silicon for LT1 intake manifold
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Joined: Jun 2001
Posts: 74
From: Springfield, VA, USA
Best silicon for LT1 intake manifold
Im about to do the intake gaskets on my brothers 95 Z whats the best kind of silicon to use? I was thinking the Gray RTV? Also anyone got some insructions on doin this to make it easier.
Thanks in advance
Thanks in advance
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Joined: Aug 2002
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From: Sweden
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Joined: Jun 2003
Posts: 166
I like using the cheese can silicone's uslualy comes in black, there is another product called the right stuff witch is actualy my favorate for installing chevy intakes and gaskets. it is a rubber based gasket maker, it's realy sicky so it keeps the intake gaskets in place much better than silicones, and it also comes in a cheese can type dispenser.
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Joined: Jun 2003
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you dont NEED to have silicone on the gaskets, mostly its to help hold the gaskets in place for install and on some vehicle were the gasket serface is slightly pitted or has been damaged by incorrect gasket removal the silicone would help seal.
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Joined: Apr 2002
Posts: 695
From: Hennepin, Illinois
GM makes some good stuff. About $15 for a tube. It's real dark, pretty much black in color. Stuff starts to get real REAL sticky in about 30 seconds. Works damn good though. 
Don't ask me for a link because I have no idea.
Don't ask me for a link because I have no idea.
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Joined: Oct 1998
Posts: 3,144
From: Jackstandican
Originally posted by Dan_gearhead
http://www.projecttransam.com/projects2.asp
http://www.geocities.com/MotorCity/Downs/4013/ol.html
http://www.projecttransam.com/projects2.asp
http://www.geocities.com/MotorCity/Downs/4013/ol.html
Don't beleive a word of what is said in that thing as far as how an oil leak starts.
The best sealant to use is either Ultra Copper, Ultra Black or the GM sealant. And retorque the intake bolts after a few heat cycles.
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Joined: Dec 1999
Posts: 753
From: Annapolis Md. USA
Oh cripes.. that ken collings page is still floating around? LMAO
Don't beleive a word of what is said in that thing as far as how an oil leak starts.
The best sealant to use is either Ultra Copper, Ultra Black or the GM sealant. And retorque the intake bolts after a few heat cycles.
Don't beleive a word of what is said in that thing as far as how an oil leak starts.
The best sealant to use is either Ultra Copper, Ultra Black or the GM sealant. And retorque the intake bolts after a few heat cycles.
Do not use sandpaper to clean surfaces like mentioned in the ridiculous article.
Do not under any circumstances use rtv on the intake gaskets
You do not need to let the car sit 24 hours for cure time. Put it back together and drive it..
GM sealant is all that I use on intake manifolds.
Last edited by 2MCHPSI; Mar 8, 2004 at 08:25 AM.
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Joined: Oct 1998
Posts: 3,144
From: Jackstandican
Oh yeah..
Exactly....
Ugh... SANDPAPER on your block???? C'mon now!
Originally posted by 2MCHPSI
Do not use sandpaper to clean surfaces like mentioned in the ridiculous article.
Do not under any circumstances use rtv on the intake gaskets
You do not need to let the car sit 24 hours for sure time. Put it back together and drive it..
Do not use sandpaper to clean surfaces like mentioned in the ridiculous article.
Do not under any circumstances use rtv on the intake gaskets
You do not need to let the car sit 24 hours for sure time. Put it back together and drive it..
Ugh... SANDPAPER on your block???? C'mon now!
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Joined: Jun 2003
Posts: 166
I'm not sure why I started using ultra copper on header gaskets, but all I know is I have never had a header gasket leak with a thin coat of Ultra copper on the gaskets. on most stock SBC manifolds I do not use gaskets at all, just ultra copper.
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Joined: May 2002
Posts: 1,475
Originally posted by jtk
I'm not sure why I started using ultra copper on header gaskets, but all I know is I have never had a header gasket leak with a thin coat of Ultra copper on the gaskets. on most stock SBC manifolds I do not use gaskets at all, just ultra copper.
I'm not sure why I started using ultra copper on header gaskets, but all I know is I have never had a header gasket leak with a thin coat of Ultra copper on the gaskets. on most stock SBC manifolds I do not use gaskets at all, just ultra copper.
Dude start using some nice felpro header gaskets and you wont have to deal with that crap. That's gotta be messy and time consuming as hell trying to goop all that crap on those headers...