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.

Re: NGK Anti - Seize?
 

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

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

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.

Re: NGK Anti - Seize?
 

I always use just a dab on the plug threads.

Re: NGK Anti - Seize?
 

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.

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.