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Spark plug question

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Old Sep 21, 2014 | 03:53 PM
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Default Spark plug question

Replacing spark plugs on 2010 ultra classic for first time. Two quick questions:
1. What is torque setting when I tighten and install new ones?
2. Do I need to put anything on spark plug threads before installing?

Installing HD plugs.

Thanks
 
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Old Sep 21, 2014 | 04:25 PM
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From: KMHT KFMY
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Nothing needed on the threads, the torque spec is "snug" which is a lot less than "grunt".

My owners manual says in the absence of a torque wrench, finger tight then 1/4 turn

also 12-18 foot pounds is the torque listed in able six of my owners manual
 

Last edited by Neggy ZRXOA 5248; Sep 21, 2014 at 04:27 PM.
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Old Sep 21, 2014 | 04:31 PM
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Silver antisieze on the threads.
 
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Old Sep 21, 2014 | 04:31 PM
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Originally Posted by Neggy ZRXOA 5248
Nothing needed on the threads, the torque spec is "snug" which is a lot less than "grunt".

My owners manual says in the absence of a torque wrench, finger tight then 1/4 turn

also 12-18 foot pounds is the torque listed in able six of my owners manual

Thank you very much, very helpful information.
 
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Old Sep 21, 2014 | 04:43 PM
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IF (and I don't) use anti seize please use the high temperature stuff, the regular stuff is not made for high heat applications, it is the copper stuff that is

Amazon.com: Permatex 09128 Copper Anti-Seize Lubricant, 8 oz.: Automotive Amazon.com: Permatex 09128 Copper Anti-Seize Lubricant, 8 oz.: Automotive


there are applications that do call for it ( ford 5.4 engines!) but not ours
 
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Old Sep 21, 2014 | 05:03 PM
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Permatex anti-seize lubricant 80208 is rated for use from -60 F up to 1600 degrees F. I think that might encompass the operating temperatures of a Harley.
 
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Old Sep 21, 2014 | 10:31 PM
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I've always used the Permatex silver on everything I own, doesn't matter if the heads are aluminum or iron. Never had a stuck plug.
 
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Old Sep 21, 2014 | 10:58 PM
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+1 on anti seize. I just use the silver cause thats what we have sittin in the grage and its worked for me. Torque is as stated 12-18 ft lbs or snug dont over tighten as the threads are only aluminum.
 
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Old Sep 21, 2014 | 11:17 PM
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Anti seize isn't called for, but I wouldn't put plugs in without it.

But I'm also the guy that puts dielectric grease on my fuses, and every electrical plug I come in contact with.

Maybe not necessary, but a bit of prevention never hurt anything.
 
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Old Sep 21, 2014 | 11:19 PM
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Steel threads in aluminum heads--use anti seize. Even if you don't think you need it, the first time you have to have a helicoil installed, or worse yet replace a head, you'll know why. Torque--12 to 18
 
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