opfor2
Full Access Member
Would Anti-seize not help if the bolts were to be removed again or does it just burn off?
Eric O-Exhaust Manifold Bolt Removal
- Thread starter donjetman
- Start date
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Stainless steel studs with flanged lock nuts is what I use. Then going forward, if you ever go back into it, you don't have to risk unscrewing anything from the head and possibly pulling the threads out with it due to corrosion.
strutaeng
Full Access Member
I've been using the copper anti-seize on exhaust flanges (and exhaust manifolds to heads) for the last few years on my 06 Suburban.
I've had to remove the flanges at least twice within that timeframe. I couldn't really tell if the anti-seize did anything because they were pretty tight on there. I haven't broken one of those bolts, so I guess that's good? I figured, it certainly wouldn't hurt... IDK honestly...and I bought the largest of those containers, so I gotta use it when the time comes, lol.
Charlie207
Full Access Member
The two broken bolts in my 2014 5.3 came out with just vice grips. I thought they were going to be rusted in place, but it was probably due to the inverse-luck rule, since that engine was already out of the vehicle.
If I had attempted the same removal with the engine still bolted into the vehicle, I'm sure I would have discovered that the broken bolts somehow fused to he heads at the atomic level.
If I had attempted the same removal with the engine still bolted into the vehicle, I'm sure I would have discovered that the broken bolts somehow fused to he heads at the atomic level.
I use anti seize on all exhaust stuff. I don't believe it's effected by high Temps.
I recently installed some Ti header studs on my ls3 car and I used a good amount. I am not drilling out Ti if I don't have to lol.
If anti seize had problems with heat, it would not have been recommended for years to be put on spark plug threads.
I'm not sure if there's a difference between plain old anti-seize and high temp anti-seize, but the latter is labeled and marketed as such.
Charlie207
Full Access Member
The grease that binds the metallic (or non-metallic) anti-friction components resists higher temps, and won't liquefy or flash off.
strutaeng
Full Access Member
Interesting. I looked up the temperature ratings on the Permatex website:
Regular copper anti-seize says it's good for 1800F: https://www.permatex.com/products/l...ts/permatex-copper-anti-seize-lubricant-8-oz/
There's another product that's nickel and that one says it's good for 2400F. https://www.permatex.com/products/l...ts/permatex-nickel-anti-seize-lubricant-5-oz/
There like a dozen of different products on their website and I'm sure there's other similar products from other manufacturers out there...
Regular copper anti-seize says it's good for 1800F: https://www.permatex.com/products/l...ts/permatex-copper-anti-seize-lubricant-8-oz/
There's another product that's nickel and that one says it's good for 2400F. https://www.permatex.com/products/l...ts/permatex-nickel-anti-seize-lubricant-5-oz/
There like a dozen of different products on their website and I'm sure there's other similar products from other manufacturers out there...
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