Help, when installing header on a c5

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Aug 9, 2009 | 03:46 PM

tramminc

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Melting Slicks

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From: boston mass

Help, when installing header on a c5

do you put lock tight on the bolt treads? reason for asking is because I see yellow looking dried marking on them.

I helping my son install them on his 03 zo6.

Aug 9, 2009 | 04:07 PM

Fastbird

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From: Fort Wayne IN

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I would NOT do that. You don't want to take a chance of trashing the threads in the head when removing them in the future.

Aug 9, 2009 | 04:26 PM

tramminc

Thread Starter

Melting Slicks

Joined: Aug 2004

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From: boston mass

Quote:

Originally Posted by Fastbird

I would NOT do that. You don't want to take a chance of trashing the threads in the head when removing them in the future.

that makes since on aluminue heads, I never use lock tight on my 68 pontiac headers or any other old car.

Aug 9, 2009 | 06:20 PM

hotwheels57

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Joined: Jan 2006

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From: Not on either liberal coast.

Some new fasteners come with yellow (or red) thread locker on them.
The yellow always reminds me of cured 3M weatherstrip adhesive ("camel snot")...

Aug 9, 2009 | 07:41 PM

froman

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maybe some antiseize lol.

Aug 9, 2009 | 10:33 PM

happa

Safety Car

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From: Simpsonville SC

I have never put thread locker on my header installs. Havent had any problems. Just torque them down

Aug 9, 2009 | 10:42 PM

C5FORFUN2

Drifting

Joined: Jul 2006

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From: Lake Tapps WA.

Would be a very good idea to use anti-sieze. Saves the aluminum threads if you ever need to remove them. I would use locking style header bolts so they don't come loose. Exhaust leaks are bad

Aug 9, 2009 | 10:51 PM

vsocks1

Melting Slicks

Joined: Oct 2007

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From: Cedarburg, WI

I used ARP header studs with ARP moly lube. Torqued to spec and never loosened up - had them on/off a few times already.
Well worth it and no threadlocker needed!