Quick question...Where does the grease go? ..Edited...
09-10-2007, 02:40 PM
#21
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I dont want to derail the thread, but I just wanted to mention that I was told to use anti-seize on my spark plugs on all of my cars. I have not experienced any ill effects as a result.
I have read that it can act as a lubricant, and thus can result in over-torquing. Thus ive been thinking of late that using anti-seize on spark plugs isnt necessarily a good idea. A proper torque is all it needs.
I have read that it can act as a lubricant, and thus can result in over-torquing. Thus ive been thinking of late that using anti-seize on spark plugs isnt necessarily a good idea. A proper torque is all it needs.
09-10-2007, 05:00 PM
#23
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Originally Posted by BillBoost37
Originally Posted by samueljackson
those are delco originals. they are "fine wire". supposed to be like that.
personally i prefer the delco iridiums part # 41-101. which ngk makes any way. but theres many guys here that like the ngk resistor plugs better. especially on the L67. to each their own.
personally i prefer the delco iridiums part # 41-101. which ngk makes any way. but theres many guys here that like the ngk resistor plugs better. especially on the L67. to each their own.
09-10-2007, 05:09 PM
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Originally Posted by Boreas
I dont want to derail the thread, but I just wanted to mention that I was told to use anti-seize on my spark plugs on all of my cars. I have not experienced any ill effects as a result.
I have read that it can act as a lubricant, and thus can result in over-torquing. Thus ive been thinking of late that using anti-seize on spark plugs isnt necessarily a good idea. A proper torque is all it needs.
I have read that it can act as a lubricant, and thus can result in over-torquing. Thus ive been thinking of late that using anti-seize on spark plugs isnt necessarily a good idea. A proper torque is all it needs.
but i believe it is necessary to use it on aluminum heads. i dont know exactly what it is . but theres something about 2 different metals, together going through all the elements, and heat that can cause them to seize.
09-10-2007, 07:29 PM
#25
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The issue with aluminum heads and steel plugs that causes the problem is called "galvanic corrosion". This happens often when two dissimilar metals are mated together for long periods of time. Then , to make matters worse, they are subjected to hundreds of hot and cold cycles.
To help explain this, I've included info from one of the many sites that discuss this.
The Thelen Channel
I've only included just a part of the info here to illustrate. For more info, google search on "Galvanic Corrosion Table" or check this simple site.
Bottom line is that you DO want to use anti-sieze when putting plugs in an aluminum head. I've had to have a head drilled and coil tapped for plugs on a forklift for this very reason.
To help explain this, I've included info from one of the many sites that discuss this.
The Thelen Channel
Galvanic Corrosion Chart
Galvanic corrosion is the corrosion that results when two dissimilar metals with different potentials are placed in electrical contact in an electrolyte.
A difference in electrical potential exists between the different metals and serves as the driving force for electrical current flow through the corrodant or electrolyte. This current results in corrosion of one of the metals. The larger the potential difference, the greater the probability of galvanic corrosion.
Galvanic corrosion only causes deterioration of one of the metals. The less resistant, active metal becomes the anodic corrosion site. The stronger, more noble metal is cathodic and protected.
Galvanic corrosion potential is a measure of how dissimilar metals will corrode when placed against each other in an assembly. Metals close to one another on the chart generally do not have a strong effect on one another, but the farther apart any two metals are separated, the stronger the corroding effect on the one higher in the table.
This table lists the potential differences for various metals in water. The order of the series can change for different electrolytes (for example, different pH, ions in solution).
I have omitted Stainless steel alloys from this table as they can significantly change their potential and become much more active if exposed to stagnant or poorly aerated water.
Electrode Potential at 77 F (25 C)
Element Standard Electrode Potential (Volts)
Anodic end (this is where the corrosion occurs)
Lithium -3.045
Aluminum -1.670
Zinc -0.762
Chromium -0.744
Iron; Mild Steel -0.440
Cadmium -0.402
Copper +0.340
Cathodic end, passive - (no corrosion here)
Galvanic corrosion is the corrosion that results when two dissimilar metals with different potentials are placed in electrical contact in an electrolyte.
A difference in electrical potential exists between the different metals and serves as the driving force for electrical current flow through the corrodant or electrolyte. This current results in corrosion of one of the metals. The larger the potential difference, the greater the probability of galvanic corrosion.
Galvanic corrosion only causes deterioration of one of the metals. The less resistant, active metal becomes the anodic corrosion site. The stronger, more noble metal is cathodic and protected.
Galvanic corrosion potential is a measure of how dissimilar metals will corrode when placed against each other in an assembly. Metals close to one another on the chart generally do not have a strong effect on one another, but the farther apart any two metals are separated, the stronger the corroding effect on the one higher in the table.
This table lists the potential differences for various metals in water. The order of the series can change for different electrolytes (for example, different pH, ions in solution).
I have omitted Stainless steel alloys from this table as they can significantly change their potential and become much more active if exposed to stagnant or poorly aerated water.
Electrode Potential at 77 F (25 C)
Element Standard Electrode Potential (Volts)
Anodic end (this is where the corrosion occurs)
Lithium -3.045
Aluminum -1.670
Zinc -0.762
Chromium -0.744
Iron; Mild Steel -0.440
Cadmium -0.402
Copper +0.340
Cathodic end, passive - (no corrosion here)
Bottom line is that you DO want to use anti-sieze when putting plugs in an aluminum head. I've had to have a head drilled and coil tapped for plugs on a forklift for this very reason.
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