Thread-locker or Anti-seize
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More Turbo
Joined: Oct 2001
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From: Augusta.GA
Thread-locker or Anti-seize
Anyone give me a quick primer on when to use thread-locking compounds and anti-seize?
About all I know is anti-seize is recommended for dissimilar metals, e.g., spark plugs in aluminum head.
About all I know is anti-seize is recommended for dissimilar metals, e.g., spark plugs in aluminum head.
Posting Legend
Joined: Sep 2001
Posts: 30,255
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Use anti-seize whenever two different metals contact. That includes spark plugs or most bolts (steel) into aluminum, or stainless steel into aluminum or steel (cast iron). Don't only use it on the threads, use it on the shank or head if they contact those other dissimilar materials. Anti-seize lubricates the threads and torque values listed in the manuals will be wrong. If you torque a spark plug or bolt with anti-seize on it to the torque listed in the manual it can pull the threads or snap the bolt. I generally use 2/3 of the torque value listed but I have no scientific basis for that figure.
Thread locker should not be used on engine bolts. It can be used on suspension and frame bolts.
There are mechanical locking methods that can be used on exhaust system bolts like header bolts etc.
Thread locker should not be used on engine bolts. It can be used on suspension and frame bolts.
There are mechanical locking methods that can be used on exhaust system bolts like header bolts etc.
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More Turbo
Joined: Oct 2001
Posts: 713
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From: Augusta.GA
Threadlocker vs. Anti-seize Primer
Hey thanks, just what I needed. I already torqued the flywheel and did use threadlocker, but will refrain from doing so in the future.
A follow-up question... I always clean my bolts and spray or soak them in a lubricant... does one always use less than recommended torque when using a lubricant?
A follow-up question... I always clean my bolts and spray or soak them in a lubricant... does one always use less than recommended torque when using a lubricant?
Fleet Mechanic
Joined: Mar 2004
Posts: 1,529
Likes: 35
From: Kansas
[QUOTE=Torque1st]Use anti-seize whenever two different metals contact. That includes spark plugs or most bolts (steel) into aluminum, or stainless steel into aluminum or steel (cast iron). Don't only use it on the threads, use it on the shank or head if they contact those other dissimilar materials.
I completely agree with your post.
I know a lot of people will argue with what I will add, but I think that
a small amount of anti-seize should be used on spark plugs used in IRON
heads. This is after trying to get six spark plugs out of a Fairmont that
had iron heads and all six were stuck. I know a lot of people will argue with
that statement but Champion spark plug makes an anti-seize especially for
spark plugs. I happen to believe that high quality anti-seize is just as good,
but some people will argue with that statement.
I completely agree with your post.
I know a lot of people will argue with what I will add, but I think that
a small amount of anti-seize should be used on spark plugs used in IRON
heads. This is after trying to get six spark plugs out of a Fairmont that
had iron heads and all six were stuck. I know a lot of people will argue with
that statement but Champion spark plug makes an anti-seize especially for
spark plugs. I happen to believe that high quality anti-seize is just as good,
but some people will argue with that statement.
Posting Guru
Joined: Aug 2000
Posts: 2,416
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From: PacNW
I have no problem using anti-seize on plugs in cast iron heads unless you're planning on selling it before you change the plugs. I also use it on lug nuts especially here in the Northwest. I know people will argue with that but I always torque the lugs anyway and it gives me a better reading. Never had a wheel loosen up on me yet.
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
I would not use anti-seize on the flywheel bolts, that is a correct application for some med strength thread locker.
I use AS on wheel studs also. I have never had a wheel come loose either.
There is s stick type AS product that is handy to throw in the toolbox. I have purchased it from parts stores. I will try to find the product name and post it. It is not as messy as the brush on types.
I use AS on wheel studs also. I have never had a wheel come loose either.
There is s stick type AS product that is handy to throw in the toolbox. I have purchased it from parts stores. I will try to find the product name and post it. It is not as messy as the brush on types.
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More Turbo
Joined: Oct 2001
Posts: 713
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From: Augusta.GA
Anti-seize and threadlocker compounds
Good advice, all! Used a high-temp thread locker on the flywheel while waiting on replys and torqued it to 75lbs, so maybe it's okay. Engine turned over a little in process so I know the motor is not locked up anyway.
After reading the posts, I recalled how hard it was to get the plugs out of the 351M when I first got it from my brother, and though definitely not aluminum it would have saved my knuckles and been much appreciated had they used AS on those plugs.
Thanks for the primer on the use of these compounds everyone!
After reading the posts, I recalled how hard it was to get the plugs out of the 351M when I first got it from my brother, and though definitely not aluminum it would have saved my knuckles and been much appreciated had they used AS on those plugs.
Thanks for the primer on the use of these compounds everyone!
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Posting Legend
Joined: Sep 2001
Posts: 30,255
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This is information from my "files" on that gray crayon, stick type, AS compound:
Please excuse the caps.
THREAD-MAGIC BRAND, CRAYON STICK, CATALOG #TM-1 OR #TMK-1
COLOR = GRAY MATERIAL WITH BLACK PAPER WRAPPER
PURCH FROM: Advance Auto Parts
MFG.ANTI-SEIZE BY AGS COMPANY, MUSKEGON, MI 49443
FOR: SPARK PLUGS, BRAKE PINS, BOLTS, STUDS, & HIGH TEMP APS 1200F
ALUMINUM & CAST IRON APS, HEAD BOLTS, MANIFOLD STUDS
>>Note: USE STANDARD TORQUE VALUES FOR THIS PRODUCT
Another type for stainless steel:
ANTI-SEIZE, FEL-PRO, P/N: C-100 HIGH TEMP & STAINLESS APS, STD APS ALSO
P/N?
COMES IN TUBES, BLACK NASTY STUFF, NON-COPPER
Please excuse the caps.
THREAD-MAGIC BRAND, CRAYON STICK, CATALOG #TM-1 OR #TMK-1
COLOR = GRAY MATERIAL WITH BLACK PAPER WRAPPER
PURCH FROM: Advance Auto Parts
MFG.ANTI-SEIZE BY AGS COMPANY, MUSKEGON, MI 49443
FOR: SPARK PLUGS, BRAKE PINS, BOLTS, STUDS, & HIGH TEMP APS 1200F
ALUMINUM & CAST IRON APS, HEAD BOLTS, MANIFOLD STUDS
>>Note: USE STANDARD TORQUE VALUES FOR THIS PRODUCT
Another type for stainless steel:
ANTI-SEIZE, FEL-PRO, P/N: C-100 HIGH TEMP & STAINLESS APS, STD APS ALSO
P/N?
COMES IN TUBES, BLACK NASTY STUFF, NON-COPPER
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Fleet Mechanic
Joined: Mar 2004
Posts: 1,529
Likes: 35
From: Kansas
Originally Posted by Torque1st
This is information from my "files" on that gray crayon, stick type, AS compound:
Please excuse the caps.
THREAD-MAGIC BRAND, CRAYON STICK, CATALOG #TM-1 OR #TMK-1
COLOR = GRAY MATERIAL WITH BLACK PAPER WRAPPER
PURCH FROM: Advance Auto Parts
MFG.ANTI-SEIZE BY AGS COMPANY, MUSKEGON, MI 49443
FOR: SPARK PLUGS, BRAKE PINS, BOLTS, STUDS, & HIGH TEMP APS 1200F
Please excuse the caps.
THREAD-MAGIC BRAND, CRAYON STICK, CATALOG #TM-1 OR #TMK-1
COLOR = GRAY MATERIAL WITH BLACK PAPER WRAPPER
PURCH FROM: Advance Auto Parts
MFG.ANTI-SEIZE BY AGS COMPANY, MUSKEGON, MI 49443
FOR: SPARK PLUGS, BRAKE PINS, BOLTS, STUDS, & HIGH TEMP APS 1200F
Not to put in a plug for this company, but I use Kimball-Midwest brand
of anti-seize. On the label it says it's pliable up to 1800 degrees.
I can't verify that, however.
Posting Guru
Joined: Mar 2003
Posts: 1,253
Likes: 2
From: spartanburg, SC
i got a big ole can of bostik never-seez.
it also says upto 1800˚
it works realy good, i use it on all sparkplugs. i replaced some plugs yesterday that didn't have AS and they was really stuck in iron heads.
hold the alt key and press k to get the ˚ thing.
it also says upto 1800˚
it works realy good, i use it on all sparkplugs. i replaced some plugs yesterday that didn't have AS and they was really stuck in iron heads.
hold the alt key and press k to get the ˚ thing.
Last edited by F150daniel; Dec 1, 2004 at 04:24 PM.
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
Daniel, that ALT-K only works on some programs. It displays 1800" (1800 inches) for us when you do that here. ALT-K does not display anything when I do it in my browser (Mozilla) or IE. ALT-248 will display the ° in most programs, my browser, IE and others, but then again not all of them. ALT-248 is a standard keycode used by the operating system, ALT-K is some program specific code.
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