Header install question
Thread Starter
Pro
Joined: Apr 2007
Posts: 663
Likes: 0
From: Arvada CO
Header install question
I am in the middle of a header install and noticed when removing the bolts from the original exhaust manifold that they were very stiff all the way out. That being said, when I reinstall the manifold bolts on my eaders, should I use an anti-seize compound? Is the temp too high for this?
thanks
thanks
Team Owner
Joined: Jan 2007
Posts: 22,136
Likes: 23
From: In the woods looking for my thrown putter.
St. Jude Donor '13, '15
Read this article:
http://www.gmhightechperformance.com...r_installation
It states that the factory bolts come loaded with sealant that needs to be removed(thats why they came out hard). It also suggest's using thread locker as header bolts tend to loosen over time.
http://www.gmhightechperformance.com...r_installation
It states that the factory bolts come loaded with sealant that needs to be removed(thats why they came out hard). It also suggest's using thread locker as header bolts tend to loosen over time.
Pro
Joined: May 2000
Posts: 610
Likes: 1
From: Midland Texas
St. Jude Donor '09-'11
Clean every bolt with a fine wire brush or wire wheel. Use anti-seize on the threads. Suggest you run a bolt doen every bolt hole in the heads to make sure the sealer is clear on the holes.
If you use the stock style metal gaskets, you should not need to use thread locker, just anti-seize. I have 8000 miles on mine since header installation and no loosening.
You must clean the bolts and chase the threads in the heads, however. Be very careful starting all the bolts.
Joe
If you use the stock style metal gaskets, you should not need to use thread locker, just anti-seize. I have 8000 miles on mine since header installation and no loosening.
You must clean the bolts and chase the threads in the heads, however. Be very careful starting all the bolts.
Joe
Thread Starter
Pro
Joined: Apr 2007
Posts: 663
Likes: 0
From: Arvada CO
Read this article:
http://www.gmhightechperformance.com...r_installation
It states that the factory bolts come loaded with sealant that needs to be removed(thats why they came out hard). It also suggest's using thread locker as header bolts tend to loosen over time.
http://www.gmhightechperformance.com...r_installation
It states that the factory bolts come loaded with sealant that needs to be removed(thats why they came out hard). It also suggest's using thread locker as header bolts tend to loosen over time.
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
with all the comment thus far. i will add that you should re-torque the header bolts, etc. after a couple of heat cycles. go for a couple of nice long drives then let her cool and re-torque.
personally, i don't use the anti-seize, how often will i be removing them??
and yes, be very careful starting the bolts, aluminum is soft and cross threading is easy.
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Thread Starter
Pro
Joined: Apr 2007
Posts: 663
Likes: 0
From: Arvada CO
Thanks for the choices.