C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Thread sealant

Old Mar 28, 2010 | 09:00 PM
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Default Thread sealant

Hey guys,
Is RTV silicone gasket maker ( Black) ok to be used on the threads of head bolts?

Thank you.
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Old Mar 28, 2010 | 09:05 PM
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use blue
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Old Mar 28, 2010 | 09:05 PM
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Originally Posted by 88yellowvette
Hey guys,
Is RTV silicone gasket maker ( Black) ok to be used on the threads of head bolts?

Thank you.
Yes.
My favorite sealant is Permatex Liquid teflon.
Some like to use Permatex #2 non hardening sealant.
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Old Mar 28, 2010 | 09:10 PM
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Originally Posted by 88yellowvette
Hey guys,
Is RTV silicone gasket maker ( Black) ok to be used on the threads of head bolts?

Thank you.
Thank you fellows.
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Old Mar 28, 2010 | 09:36 PM
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I would get the correct thing that is supposed to seal threads instead of RTV.
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Old Mar 28, 2010 | 09:48 PM
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Default No!

I wouldn't. You need thread sealent not gasket RTV. I haven't read anywhere they say to use RTV. Just my 2 cents.
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Old Mar 28, 2010 | 09:54 PM
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Ive been using black RTV on threads since it was invented. On a lot of small blocks. No problems.
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Old Mar 28, 2010 | 10:17 PM
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Originally Posted by JackDidley
Ive been using black RTV on threads since it was invented. On a lot of small blocks. No problems.
Yeah, but RTV is supposed to be an adhesive and gasket maker, not seal threads. So, why not spend the $5 for the correct sealant? Especially head bolts, who would want to have to tear it apart again because the RTV failed to seal head bolts?
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Old Mar 29, 2010 | 02:47 PM
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My opinion is "NO". It wasn't designed for that purpose. I'm a Permatex #2 guy.

Jake
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