92 LT1,no-sieze on spark plug threads????

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Aug 15, 2008 | 04:09 PM

bee674

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92 LT1,no-sieze on spark plug threads????

Used no-sieze grease on plug threads, is this recommended by GM since heads are aluminum? Any thoughts if its good or bad idea? Thanks

Aug 15, 2008 | 05:09 PM

makn u shiver

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From: st albert alberta

good idea ,thats they way to do it

Aug 16, 2008 | 01:10 PM

Klondike

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From: San Antonio Texas

I'd say mandatory. The steel in the plug will have an electron flow reaction with the aluminum and corrode themselves to the head. Without the anti seize, the aluminum threads will come out with the plugs when you try to remove them in a few years.

Aug 21, 2008 | 12:41 AM

mvitacco

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Old mechanic taught me anything that touches alluminum should
have anti-seize, else you run the risk of galling the threads. Just use
a little dab and be carefull not to get any on the electrode.

Sep 4, 2008 | 02:06 PM

BobRR3

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PS: Just make sure you don't try to remove the spark plugs with the engine hot.

Sep 5, 2008 | 04:55 AM

wmf62

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From: Inverness FL

St. Jude Donor '07

FWIW, there are antiseize compounds that can be damaging to aluminum. make sure you get one that is 'aluminum safe'
Bill

Oct 16, 2008 | 10:48 PM

larry00

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From: D / FW

While we are at it on waterpump bolts what is the best thing to use and how much of the thread do you cover.
I hear different stuff from different people.

Oct 17, 2008 | 07:27 AM

Mutt Vette

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Anti-seize on sparkplug threads has pros and cons.

Too much or sloppily applied runs the risk of the compound entering the combustion chamber and out the exhaust, fouling the O2 sensor. There's a quick $50 down the drain.

Not using anti-seize will not result in thread damage. Usually thread damage is caused by overtorqueing the plugs. Torque specs for plugs installed in aluminum heads are in the range of 20-22 INCH pounds. If you do not use a torque wrench, tighten spark plug finger tight, then tighten no more than 1/16th of a turn with a wrench.

Gorilla tactics will guarantee thread problems, with or without anti-sieze compound.