Changing Spark Plugs *Question.*
10-15-2008, 02:59 PM
#1
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Join Date: Sep 2007
Location: Michigan
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Changing Spark Plugs *Question.*
Alright, my friend just changed his plugs, I'm making this thread so I have something to compare with.
He has an 04 Crown vic police interceptor, it has the 4.6L Since it has aluminum heads I told him, use anti seize on your plugs and torque them by hand so you don't strip them.
He has an account on a crown vic forum, he asked for their opinion, they said change the plugs dry, and don't use anti seize or anything similar to it.
He second guessed them and asked if they were sure, and they bascially called him an idiot for not taking their advice and doing it like they had said to. I went over my friends last night, helped him change the plugs, did it the way I said, with anti seize and no torque wrench, just by hand. Everything went fine, car runes fine ect.
So, whats your take ? You're the guys with the 4.6
He has an 04 Crown vic police interceptor, it has the 4.6L Since it has aluminum heads I told him, use anti seize on your plugs and torque them by hand so you don't strip them.
He has an account on a crown vic forum, he asked for their opinion, they said change the plugs dry, and don't use anti seize or anything similar to it.
He second guessed them and asked if they were sure, and they bascially called him an idiot for not taking their advice and doing it like they had said to. I went over my friends last night, helped him change the plugs, did it the way I said, with anti seize and no torque wrench, just by hand. Everything went fine, car runes fine ect.
So, whats your take ? You're the guys with the 4.6
10-15-2008, 03:13 PM
#3
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Thread Starter
Join Date: Sep 2007
Location: Michigan
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Fixed link,
http://www.crownvic.net/ubbthreads/u...nt=all&fpart=1
You can figure out where I came in...
http://www.crownvic.net/ubbthreads/u...nt=all&fpart=1
You can figure out where I came in...
10-15-2008, 03:52 PM
#4
1st Gear Member
Join Date: Mar 2008
Location: Pa. outside Philly
Posts: 103
When you put steel and aluminium together you get electrolysis between them - an electric current that can causes them to seize together. When replacing plugs in an aluminium head I always use high-temp antiseize, cheap insurance.
10-15-2008, 04:44 PM
#7
3rd Gear Member
Join Date: Sep 2007
Location: Eagle, Idaho
Posts: 578
In aluminum heads, I always use a torque wrench! And yes, there is a difference between 'dry torque' and 'wet torque'. If you use too much anti-seize and don't torque the plugs correctly you run the real risk of the plug loosening and backing out.
10-15-2008, 07:59 PM
#9
5th Gear Member
Join Date: Jul 2006
Location: New Orleans
Posts: 4,491
Use the anti sieze, but not on the threads. On the shaft below the threads is where the plugs really lock up. Also, if you put the anti sieze directly on the threads, it increases the chance that the plugs will back out.
Last edited by Diabolical!; 10-15-2008 at 08:03 PM.
10-16-2008, 01:07 PM
#10
3rd Gear Member
Join Date: Nov 2006
Location: Kansas City
Posts: 960
Crown Vic 4.6L's are still 2 valve engines. So the 3 valve mindset does not apply.