The Ford Barn

burly · 05-02-2024, 01:25 PM

Guys was just reading NGK does not recommend the use of anti seize on their spark plugs? Aways used especially on aluminum heads? Your thoughts appreciated.

Brian · 05-02-2024, 01:51 PM

I use it on the plugs going into my aluminum heads.

Ronnieroadster · 05-02-2024, 02:42 PM

The reason they don't recommend the anti seize is due to the fact the spark plug ground can be reduced thus possibly creating an issue with the plug not firing at full potential. That issue is more related to late model engine's not our old ford stuff.
Using it on a Ford flathead will not create any noticeable issue from what I have seen.
Ronnieroadster

stingywrap · 05-02-2024, 11:47 PM

Thread Coating: Modern spark plugs often come with a special plating or coating on the threads designed to provide corrosion resistance and ensure proper torque. Applying anti-seize compound can interfere with this coating and alter the torque values, potentially leading to over-tightening or under-tightening of the spark plugs.
Heat Dissipation: Anti-seize compounds are typically greasy or oily substances, which can act as insulators. When spark plugs are installed with anti-seize, it may interfere with the heat dissipation from the spark plug threads to the cylinder head. This can potentially lead to overheating of the spark plug and affect its performance.

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19Fordy · 05-03-2024, 05:34 PM

I always use just a dab on the plug threads.

Pete · 05-03-2024, 05:56 PM

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The use of a copper base anti-seize compound for spark plugs has been common for many years.
Copper is an excellent conductor of heat and electricity.
On spark plug threads it will help dissipate heat even if the main amount of heat is conducted through the washer.
Being copper based it provides excellent electrical conductivity for the plug current which in a race engine can be many amps.
Torque values for spark plugs will vary slightly depending on the thread size, length and the seat type. (washer or taper)
When installed with antiseize that value is usually reduced by 30%.
In rare cases it has been noted that the more efficient heat transfer with antiseize applied to the spark plug threads, the heat range needed to go hotter one notch.

rotorwrench · 05-03-2024, 07:43 PM

Where most problems come from is when the mechanic gets a little too liberal with the compound and gets some between the threads and the electrodes. If it gets on the electrodes it will fowl the plug. I use copper and nickel based anti-seize. The nickle holds up the best but it's more expensive.

05-02-2024, 01:25 PM	#1
burly Senior Member Join Date: May 2010 Location: Bowling Green, Ky. Posts: 243	NGK Anti - Seize? Guys was just reading NGK does not recommend the use of anti seize on their spark plugs? Aways used especially on aluminum heads? Your thoughts appreciated.

05-02-2024, 01:51 PM	#2
Brian Senior Member Join Date: May 2010 Location: Masterton, New Zealand Posts: 4,097	Re: NGK Anti - Seize? I use it on the plugs going into my aluminum heads. __________________ Unfortunately, two half wits don't make a whole wit!

05-02-2024, 02:42 PM	#3
Ronnieroadster Senior Member Join Date: Dec 2010 Location: East Coast in CT Posts: 1,778	Re: NGK Anti - Seize? The reason they don't recommend the anti seize is due to the fact the spark plug ground can be reduced thus possibly creating an issue with the plug not firing at full potential. That issue is more related to late model engine's not our old ford stuff. Using it on a Ford flathead will not create any noticeable issue from what I have seen. Ronnieroadster __________________ I use the F word a lot no not that word these words Flathead, Focus and Finish "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 First Ford flathead roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH reset the record in 2024 to 211.830 running to mile four. Top speed 2024 mile five 220.672 exit speed 221.587

05-02-2024, 11:47 PM	#4
stingywrap Junior Member Join Date: Apr 2024 Posts: 12	Re: NGK Anti - Seize? Thread Coating: Modern spark plugs often come with a special plating or coating on the threads designed to provide corrosion resistance and ensure proper torque. Applying anti-seize compound can interfere with this coating and alter the torque values, potentially leading to over-tightening or under-tightening of the spark plugs. Heat Dissipation: Anti-seize compounds are typically greasy or oily substances, which can act as insulators. When spark plugs are installed with anti-seize, it may interfere with the heat dissipation from the spark plug threads to the cylinder head. This can potentially lead to overheating of the spark plug and affect its performance. scratch geometry dash

05-03-2024, 05:34 PM	#5
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 11,916	Re: NGK Anti - Seize? I always use just a dab on the plug threads.

05-03-2024, 05:56 PM	#6
Pete BANNED Join Date: May 2010 Location: Wa. Posts: 5,423	Re: NGK Anti - Seize? Sponsored Links (Register now to hide all advertisements) The use of a copper base anti-seize compound for spark plugs has been common for many years. Copper is an excellent conductor of heat and electricity. On spark plug threads it will help dissipate heat even if the main amount of heat is conducted through the washer. Being copper based it provides excellent electrical conductivity for the plug current which in a race engine can be many amps. Torque values for spark plugs will vary slightly depending on the thread size, length and the seat type. (washer or taper) When installed with antiseize that value is usually reduced by 30%. In rare cases it has been noted that the more efficient heat transfer with antiseize applied to the spark plug threads, the heat range needed to go hotter one notch.

05-03-2024, 07:43 PM	#7
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 18,006	Re: NGK Anti - Seize? Where most problems come from is when the mechanic gets a little too liberal with the compound and gets some between the threads and the electrodes. If it gets on the electrodes it will fowl the plug. I use copper and nickel based anti-seize. The nickle holds up the best but it's more expensive.