Thread: Anti seize

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  1. #1
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    Anti seize

    I there a "best" anti seize to use for things like thermostat bolts, spark plugs, etc.? Is the "marine grade non-metallic" the stuff to get? This will be for fresh-water only if that matters.
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    #2
    I like Loctite LB 8150. Part number 76732.
    Last edited by Savage; 09-22-2017 at 11:53 AM.



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    #3
    Quote Originally Posted by Savage View Post
    I like Loctite LB 8150.
    Thanks.
    Last edited by dkennimer; 09-22-2017 at 10:02 AM.
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  4. Member J Risco's Avatar
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    #4
    I googled it cause I wanted to see what $149 anti-seize looked like... I found a bunch of links cheaper than that unless its not the same thing or something...

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    #6
    Technically there is no best anti-seize for everything, even on marine engine there are different requirements based on heat, etc. But the marine stuff above should cover most stuff
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    #7
    How much are you going to use a gallon. Grainger sells 4 oz for $10.31+ or you can buy 7gr. packs on amazon for $3

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    #8
    How about 2-4c which is what Merc recommends. No anti-seize on spark plugs. In fact you should not use anti-seize or any lubricant on a fastener that has a torque value based on a dry installation. Torque wrenches measure the friction force of the assembly. Lubes reduce friction and will cause an over torque scenario.


    Quote Originally Posted by dkennimer View Post
    I there a "best" anti seize to use for things like thermostat bolts, spark plugs, etc.? Is the "marine grade non-metallic" the stuff to get? This will be for fresh-water only if that matters.

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    #9
    Quote Originally Posted by leo13 View Post
    How about 2-4c which is what Merc recommends. No anti-seize on spark plugs. In fact you should not use anti-seize or any lubricant on a fastener that has a torque value based on a dry installation. Torque wrenches measure the friction force of the assembly. Lubes reduce friction and will cause an over torque scenario.
    I've never used it, but when checking and replacing my thermostat gaskets, they felt like they needed some lubricant. I won't use them on the spark plugs, never have.
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    #10
    Quote Originally Posted by J Risco View Post
    I googled it cause I wanted to see what $149 anti-seize looked like... I found a bunch of links cheaper than that unless its not the same thing or something...

    https://www.google.com/search?q=Loct...hrome&ie=UTF-8
    Both sites i looked at have them listed incorrectly. They show a 16oz can, but in the description it says 1 gal. It had me
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    #13
    Do not use anti seize on your spark plugs. It effects the grounding ability of the spark plug. If you torque to spec, you should be okay.

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    #14
    Antiseize on spark plugs is not a problem.



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    #15
    Quote Originally Posted by Savage View Post
    Antiseize on spark plugs is not a problem.


    Good to hear! I'm positive I put it on my plugs.

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    #16
    Stainless threads in an aluminum head. I always use nickel anti seize on spark plugs
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    #17
    Quote Originally Posted by Savage View Post
    Antiseize on spark plugs is not a problem.

    it most definitely can be a problem when it comes to quality of grounding.

  18. Scraps
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    #18
    Anti-seize on stats, or is that gasket seal? I always use a "light" coating of anti-seize on spark plugs. If not specified, I'll back off on the torque as well to account for the lube.

    I've removed too many slightly corroded plugs to not use anti-seize.
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    #19
    Backing off on the torque can net the correct amount of strain on the internal threads of the cylinder head but will have a reduced amount of friction in the system which could make the plugs come loose. Torquing to the correct spec of 20ftlbs will net more then the specified amount of strain on the threads with the correct amount of friction.

    There is no specific k value for this application with anti-seize so it is a guessing game on how much to back off. These engines have some issues with pulled threads and plugs coming loose. As far as grounding is concerned I have never actually contemplated the effects so I don't know.

    Ngk has specially engineered the coating on the plugs so that they do not need anti-seize.

    If your plugs are corroded then you should decrease their service interval.



    "1. Anti-seizeNGK spark plugs feature what is known as trivalent plating. This silver-or-chrome colored finish on the threads is designed to provide corrosion resistance against moisture and chemicals. The coating also acts as a release agent during spark plug removal. NGK spark plugs are installed at the factory dry, without the use of anti-seize. NGK tech support has received a number of tech calls from installers who have over-tightened spark plugs because of the use of anti-seize. Anti-seize compound can act as a lubricant altering torque values up to 20 percent, increasing the risk of spark plug thread breakage."


    Quote Originally Posted by krindgen View Post
    Anti-seize on stats, or is that gasket seal? I always use a "light" coating of anti-seize on spark plugs. If not specified, I'll back off on the torque as well to account for the lube.

    I've removed too many slightly corroded plugs to not use anti-seize.

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    #20
    Quote Originally Posted by Phisherman View Post
    it most definitely can be a problem when it comes to quality of grounding.
    Nope, the gasket seal on the spark plug provides a perfect ground path.



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