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2013 Shelby GT500 performance white
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617 Posts
Discussion Starter #1
I am checking my spark plugs this evening, this is the first time I’ve checked them since the new motor went in last summer. Getting ready to take the car out of storage and wanting to make sure everything looks OK. I certainly am overly cautious being I blew my last motor.
How do these look?
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Premium Member
2012 SVTPP with a heavy dose of 2013 components
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7,426 Posts
Have you been running your car while it's in storage. That first pic shows some discoloration on the porcelain and look a little dirty. You might want to consider running it on the road before analyzing them. Is that carbon at the base of the ground strap and the base of the threads? I don't see signs of detonation, but I'm not sure we're getting that good a view either. You might want to recheck the gap before you install them.

197768
 

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Premium Member
2013 Shelby GT500 performance white
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617 Posts
Discussion Starter #4
On the threads themselves, it is anti-seize.
I have taken it out about once a month to drive it for about 20 miles on nice days. While it is in storage I use 93 octane. When I have it out I add a little fresh gas. When I pull it back out for the summer I will switch back over to E85. I have tunes to run both.
 

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2012 SVTPP with a heavy dose of 2013 components
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I don't really have experience with e85, so that may be normal for all I know.
 

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2010 Grabber Blue Gt500
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They all look good to me. No specs on insulator by tip so no detonation as CM stated, color looks ok, not rich not lean, run as is?
 

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2010 Shelby GT500 Kona Blue/Silver stripes
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They sure look like spark plugs!
 

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2013 Shelby GT500 performance white
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617 Posts
Discussion Starter #8
Thank you everyone for your responses! Certainly makes me feel a lot better. I took the car out of storage today, ran all the 93 octane out of it and filled it up with E85. I am certainly loving the way it’s running! I do hope Shelbyfest goes on this year because while some can’t make it, I would love to have someone in the know drive my car to make sure everything is feeling OK. I personally have nothing to compare it to. Thanks again!
 

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On the threads themselves, it is anti-seize.
Do folks use a torque wrench to install, or just go with experienced feel? What torque values (both wet and dry) are used?
 

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2013 Shelby GT500 performance white
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Discussion Starter #12
Do folks use a torque wrench to install, or just go with experienced feel? What torque values (both wet and dry) are used?
I always go by feel. I am not sure what the torque specs are for them. I would imagine it might be in the manual of the year of your vehicle, but I’m not sure. Maybe some of the more knowledgeable than myself will chime in like @Catmonkey
 

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2009 Shelby GT500 Vista Blue/White Stripes
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I always go by feel. I am not sure what the torque specs are for them. I would imagine it might be in the manual of the year of your vehicle, but I’m not sure. Maybe some of the more knowledgeable than myself will chime in like @Catmonkey
My understanding is 13 ft/lbs. for spark plug torque on a cold engine when installed dry. I torque mine to 15 ft/lbs. with no anti-seize on the threads. I always use an in/lb. torque wrench too, which in my case would be 180 in/lbs. NGK does not recommend anti-seize on their plated plugs anyway. If you do use it you might want to reduce your torque by a couple of ft. lbs., reason being that the anti-seize acts as a lubricant and it will then be easy to over tighten them. Just my 2 cents.
 

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2013 Shelby GT500 performance white
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Discussion Starter #14
I have also heard a lot of recommendations about not using anti-seize
 

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Moderator/Admin Dude!
2020 CFTP on order 2011 Kona Blue/white
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Personal preference, but I only use a torque wrench for bigger things that aren’t easily stripped or broken. I’ve seen too many torque wrench thread/post “errors” through the years to have a little concern when dealing with smaller/more fragile items.
 
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