Manifold/Header Bolt Anti-Seize or ThreadLocker?
Manifold/Header Bolt Anti-Seize or ThreadLocker? I know the answer to this seems obvious, but ive been doing my H/C Swap to the book (2001 GM F-Body Service Manual) and I am going to be putting the exhaust back on tomorrow.
Manual specifies how much to use as far a quantity goes, but the part number it gives is for a threadlocker that is comparable to the blue stuff. Gives no mention of anti-seize, but says make sure all threads are clean from old thread loc?
Any advice on why they call out for thread loc?
Thanks
Manual specifies how much to use as far a quantity goes, but the part number it gives is for a threadlocker that is comparable to the blue stuff. Gives no mention of anti-seize, but says make sure all threads are clean from old thread loc?
Any advice on why they call out for thread loc?
Thanks
If you're putting a steel bolt into an aluminum head, you need to put anti-seize on there. I've done headers 3 times on my car and used anti-seize on the stock bolts each time. I've never had to re-tighten any of the bolts, and I never had a problem taking the bolts off when I had to. Don't put loctite on them!!!
blue is medium pressure loctite. it is meant to seal, lock, but still be able to be broken. IT IS meant for disassembly.
red is high pressure. it is NOT meant to be broken. generally you would be required to heat it to break it loose.
if i were you, i'd use anti-sieze and be done. it wont let you down.
now if you want some serious detail on this stuff, just go to loctite's website.
im just telling you what i know because i work in the engineering dpt. of a heavy machinery factory. we deal with this alot
red is high pressure. it is NOT meant to be broken. generally you would be required to heat it to break it loose.
if i were you, i'd use anti-sieze and be done. it wont let you down.
now if you want some serious detail on this stuff, just go to loctite's website.
im just telling you what i know because i work in the engineering dpt. of a heavy machinery factory. we deal with this alot
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Wow This Is A Very Informative Thread I Was Just Thinking Of Posting Something Like This Because I Am Installing My Headers On This Weekend And Am Going To Use The Original Maniflod Bolts, And I Was Wondering The Same Thing About The Anti-seize......thanks For The Info Guys
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Joined: Nov 2001
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From: Barbaria
Another vote for anti seize only. 5 years and 70k miles with macs, no problems here.
Looking at it from the GM's perspective, those manifolds were never meant to come off anyway. Red would be a pain in the *** for their techs to deal with, but blue will still come apart...just my thoughts why they used blue.
Looking at it from the GM's perspective, those manifolds were never meant to come off anyway. Red would be a pain in the *** for their techs to deal with, but blue will still come apart...just my thoughts why they used blue.
Originally Posted by DBUS6
anti sieze would be good for disassembly also, but does anybody use the Stage-8 s to prevent them from backing out?
I went with the split locks and will be putting them on this weekend. I'll post up my thoughts afterwards.
I followed the GM service manual as well when I installed my headers. The part number for the thread locker is actually the equivalent of red loc tite. I know because I actually bought some and used it on my header studs (just a small drop). My header studs are stainless, which has a more slippery/smooth surface so using red loc tite really isn't as bad. I then used the ARP assembly lube on the nuts for the studs.
Chris
Chris
I used anti-sieze and reused the stock bolts. They haven't come anywhere near loose yet, and I just did this last weekend. Last time I did headers on my LT1 I used ARP bolts, and had to tighten them constantly for about 3 weeks before they stopped loosening up.
I'm suprised that more people don't use header studs. They make installing the headers a ton easier (since you can hang them), there is no danger of cross-threading them, and you can tighten the **** out of them without worrying about ruining threads. Seems like cheap insurance to me...
The only reason the factory uses locktight is so the header bolts dont come loose probally can you imagine buying a new car and having the header bolts come loose that would **** me off buying a car for 30k+ and havin it come apart