ericmuscle

anyone know the torque specs for spark plugs on a 2004 cobra?

RedHousePainter

I do not know if there is, but I would say since you have a s/c to make them a little more than snug. More than n/a vehicles. Spark plugs usually don't come out. But to answer your question no I do not know.

Timspony

...I just get them snug + 1 grunt!! Done, simple

pkwest

Never tighten them when the engine is warm. It will get tighter than desired when the engine cools. Always use a small (doesn't take much) amount of anti-seize. This will help not to remove material from the plug hole when you remove them later. I always torque them to the factory spec. I will look it up when I get home. Over tightening will stress the threads and you will eventually blow out a plug. It may take a few plug changes but in time it will happen if you skip one of the above steps. In most of our heads there are only 4 threads holding the plug in.

ChalknCover

According to alldata it is 15Nm or 11lb-ft. Gap is 1.32-1.42mm or .052-.056in.

pkwest

My memory was 15nm or 11lb-ft but wanted to be sure. That would confirm it. You will need to use a 3/8" drive in-lb torque wrench. Use the newton meters scale since they read in inch pounds.

SpectorV

+1 15newton meters or 11 ftlbs~ or 136 (check my math) inch pounds. I plan to change mine soon. I think stock gap is as stated above as well, remember they have like 3 different set of plugs from the first run in 03 onward so you may need to check what you have.

I would also use a VERY VERY VERY tiny bit of antiseeze (also very tiny bit lol)