Antiseize on spark plugs?

[404]

It's not that simple. Mass of the objects must also be considered for galvanic corrosion.

Explain please.

 

[gsingh]

Been using tiny bit of anti seize on spark plugs for the past 4-5 years. Really helps when you have to replace them.

 

[gsingh]

NGK have trivalent coating. BMW, Porsche, Mercedes all say do NOT use any seize on plugs. Never had trouble in our shop with plug removal on any plugs so no I don't use it. Correct torque on plugs is more important

And techs there are still told to use anti seize on the plugs or some type of lube.

 

[t100]

The correct Clamping Force is the end result you want to accomplish when installing threaded hardware. Just remember the same amount of torque applied to "wet/lubricated" thread will be significantly different then the "dry" ones.

 

[Flat-rate]

Surprised that no one has brought up installing cold plugs in a hot alloy head.

38 yrs on the line, no antisieze ever for spark plugs, never a problem removing them. That includes my sisters 400,000 mile Honda Civic.

 

[d.mcfarland]

The last NGK plugs I used said they are coated with anti-seize basically. No need to add more in my mind.

 

[Skidonenko]

Flat rate, Have you ever done plugs on a ford 4.6/5.4 3v engine? if the original plugs were in more than 60-70k miles good luck not snapping one off.

Also having worked on propane forklifts for a while now, due to the time the plugs stay in the engine and heat cycles, I use it always.

 

[Flat-rate]

Flat rate, Have you ever done plugs on a ford 4.6/5.4 3v engine? if the original plugs were in more than 60-70k miles good luck not snapping one off.

Also having worked on propane forklifts for a while now, due to the time the plugs stay in the engine and heat cycles, I use it always.

Sure have, my landlord has one. It's a design problem that allows carbon to build up in the threads, so how would silver goo prevent that?

 

[mattygee]

I know not everyone would have such a thing but I have an old stash of pure silver anti seize compound. Once its gone its gone, so I use it just for plugs... back in 1990 it cost $300 for a small can. In my mind, given all the other variables involved...torque, thread cleanliness, mfg tolerances, condition of engine, etc, the presence, or lack of a small dab of anti seize isn't going to drive a predictable result 1 mile or 100,000 miles down the road.

 

[ngk22r]

Flat rate, Have you ever done plugs on a ford 4.6/5.4 3v engine? if the original plugs were in more than 60-70k miles good luck not snapping one off.

Also having worked on propane forklifts for a while now, due to the time the plugs stay in the engine and heat cycles, I use it always.

Anti seize will do no good on the threads of the spark plug of the 3 valve triton.

The carbon builds up on the portion below the threads and causes it to break off leaving the electrode and housing behind.

 

[fivespdcat]

Explain please.

Sorry I should have said contact area. Here's a pretty good read on galvanic corrosion:

http://www.ssina.com/corrosion/galvanic.html

 

[404]

Sorry I should have said contact area. Here's a pretty good read on galvanic corrosion:

http://www.ssina.com/corrosion/galvanic.html

Good post thank you.

 

[GRX]

(Use anti-seize on the spark plug threads to prevent galling in
the cylinder head, and torque to 10 ft./lbs. Do not overtighten.)

Edelbrock recommends on their aluminum cylinder heads

Yes they do. Right in the pamphlet.

 

[404]

Anti seize will do no good on the threads of the spark plug of the 3 valve triton.

The carbon builds up on the portion below the threads and causes it to break off leaving the electrode and housing behind.

I am going to out on a limb and say that an initial coating with anti seize on the lower portion will interfere with the carbon bonding well to the plug. So the plug is more likely to release from the carbon tube on it and come out.

 

[mjoekingz28]

Beat up the threads on the new plugs, run the wrong size thread chaser through the head, apply liberal quantities of structural hi-temp adhesive mixed with sand and filings from a brake lathe, and then run them in with an impact. Peen and/or stake them into place. A bead of weld couldn't hurt!!! Allow to cure overnight, and you're set! Next time you need to do the plugs, take it to your fave mechanic and demand he do them for the flat rate time.

Can you sell this idea to the engineers of new automobile makers as a lifetime fastener?

 

[lilxtra]

I'll chime in on this one, as a former performance shop owner ( 13 years full time), (mostly 4.6 & 5.4 Ford mod motors ) with over 30 years working on cars I can tell you this. I have NEVER removed a broken spark plug that had anti seize on it and never had one break that did. I have NEVER had a misfire problem with it either and I've had 281 cube engine make near 800rwhp and get 19 mpg & they had anti seize on theirs.
So if it has never CAUSED a problem for me in all these years but I've SEEN problems when it WASN'T there, guess what I'm going to do! Just my 30 years experience speaking

 

[Fender1325]

I drove a 98 mustang gt with the 4.6 2v v8 to 200k before I sold it. Always used antisieze, just a dab on the spark plug threads. Never a problem.

 

[CJM8515]

I dont use it on spark plugs, messes with the torque you can apply since its wet. Thats why you never oil a bolt or nut you assemble either if torque is critical.

As for the triton engines, its the design thats the issue. They wont even sell the 3 pc plugs anymore. I do use a tiny dab on them however. Problem is when people liberally apply the stuff.

 

[OkRider]

I know not everyone would have such a thing but I have an old stash of pure silver anti seize compound. Once its gone its gone, so I use it just for plugs... back in 1990 it cost $300 for a small can. In my mind, given all the other variables involved...torque, thread cleanliness, mfg tolerances, condition of engine, etc, the presence, or lack of a small dab of anti seize isn't going to drive a predictable result 1 mile or 100,000 miles down the road.

I use the real silver stuff too or the copper based. Also use the silver as per Porsche recommendations on wheel lug nuts, which by the way are aluminum on my 968. And on the glow plugs on moms MB 300 diesel. Never had a bit of trouble getting any plugs out after installed with anti seize on any of my vehicles, ever. Not a tech, so I guess I just got lucky.

Funny side note. I picked up that near to full can of Swedgelok Silver Goop for $5 in a thrift store. Lucky me.