Spark Plug Specs
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Ultimate HDF Member
Joined: Jun 2012
Posts: 8,218
Likes: 827
From: Reston, Va
Spark Plug Specs
I'm in the process of moving Unfortunately, the Service Manual for my 2007 Sportster 1200 Custom has been packed is Gawd-Only-Knows-Where in the new house. I know exactly where all of my tools are, but The Missus packed up my library across a dozen or so different boxes.
In any case, I want to change the spark plugs. I bought a pair from the local HD dealership. What I don't have is the gap and torque specs. If anybody can provide me with that information, both I and Talulah the Sporty thank you.
In any case, I want to change the spark plugs. I bought a pair from the local HD dealership. What I don't have is the gap and torque specs. If anybody can provide me with that information, both I and Talulah the Sporty thank you.
Cruiser
Joined: May 2013
Posts: 146
Likes: 0
From: Detroit, MI
interesting. I just bought a new pair of NGK's to replace my plugs on my 2007 883L. I don't have a torque wrench so I just snugged em up. Didn't gap em either. Bike seems to be running great. Hope its cool that I didnt torque them persay
Road Master
Joined: Apr 2012
Posts: 1,188
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From: New Hampshire
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Road Warrior
Joined: Oct 2007
Posts: 1,599
Likes: 11
From: Colonial Beach, Virginia
I torque them every time even in my old F 150-302. Its quite easy to go beyond the recommended torque and either distort the valve seats or warp the head and let the head gasket blow.
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Thread Starter
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Ultimate HDF Member
Joined: Jun 2012
Posts: 8,218
Likes: 827
From: Reston, Va
When I was taught how to do plugs back in the '70's, we gapped the plugs, cleaned up the threads on the head and then screwed in the plug until it was hand tight. At that point, we would turn the plug 1/4 turn and call it a day.
In all of the time that I did plugs, I think I only messed up one head doing that.
Now, I'm older and can afford decent tools. So, if the Service Manual calls for 12-18 ft lbs with a .038 to .043 gap, well, that's what my Talulah deserves and is going to get.
In all of the time that I did plugs, I think I only messed up one head doing that.
Now, I'm older and can afford decent tools. So, if the Service Manual calls for 12-18 ft lbs with a .038 to .043 gap, well, that's what my Talulah deserves and is going to get.