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Old 06-01-2010, 01:03 PM
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Question Spark Plug Torque Specs

I am planning on helping a friend change the spark plugs on his 2004.
So thats the year that we want the specs for, but it would be nice to have the torque specs for every year V10 all in one place. If someone would first give the factory specs that would great. Then we can talk about other #'s. I've heard anywhere from 11 lb.-ft. to 32 lb.-ft. and also whether or not to use some sort of lubrication. Anti-Seize?
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-1997 F-250HD 7.3L XCLB 114,000 miles, 3" DP to 4", EBPV gutted, EaAU4095
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Old 06-01-2010, 02:15 PM
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Ford's sevice manual for the 04 says use Motocraft Plug SP-479 AGSF22WM and torque to 14 lb.-ft..
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Old 06-01-2010, 02:17 PM
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Is that what ur gonna do?
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-1996 F-250 7.3L, Auto, 4x4, 3.55 gears, TC lock-up, Amsoil EaAU4095, EBPV gutted, 3" DP, Straight Pipe, 203° T-stat, 1.0 A/R Turbine Housing, 280,000 Miles
-1997 F-250HD 7.3L XCLB 114,000 miles, 3" DP to 4", EBPV gutted, EaAU4095
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Old 06-01-2010, 02:25 PM
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Yeah if it doesnt work we'll be putting on a new head and hood maybe.
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Old 06-01-2010, 02:28 PM
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That sounds like a good time.
Is that with dry plug threads?
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-1996 F-250 7.3L, Auto, 4x4, 3.55 gears, TC lock-up, Amsoil EaAU4095, EBPV gutted, 3" DP, Straight Pipe, 203° T-stat, 1.0 A/R Turbine Housing, 280,000 Miles
-1997 F-250HD 7.3L XCLB 114,000 miles, 3" DP to 4", EBPV gutted, EaAU4095
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Old 06-01-2010, 02:37 PM
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They said on 2-valve don't bother with anti-seize. The dealer doesn't use any.
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Old 06-02-2010, 10:12 AM
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I think we should get a sticky with the torque specs. In my search I've seen too many variations. Maybe even set up a poll or something. Then have people post of they have had or haven't had a blow out with the torque spec they used.
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Old 06-02-2010, 10:45 AM
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14 ft/lbs is the general consensus.

USE ANTI-SEIZE. If the zinc plating on the plug is nicked or fails, the interaction between the iron plug and the aluminum head is NOT PRETTY.
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Old 06-07-2010, 07:54 PM
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post some pics of the plugs. heard they can get looking pretty bad
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Old 06-08-2010, 02:33 PM
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Here's some pictures after 115k miles.

Click the image to open in full size.

Click the image to open in full size.
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Old 06-08-2010, 04:43 PM
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I torqued mine to 14lbs at plug change and six months later had a loose one.
Went to blownoutsparkplug.com and got their information. Torqued to 30lbs and have done it three times since. The plugs came out with no problems and went in great. No damage to the threads.
the guy at blownoutsparkplug.com has torqued them to 100lbs and still didn't strip on the 5 thread heads. I agree with him that the threads don't strip due to over tightening, but they strip because they wallow the threads out when they come loose.
No lubricant. 200,000 on my motor and going strong 2002 two valve V10 van.
andrew.
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Old 06-08-2010, 04:43 PM
 
 
 
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