SlackJaw

Hey,

I tried searching first but didn't come up with anything. Does anyone know what the proper torque specs are for spark plugs?

Also, I've read on here to NOT put anti-seize on the threads b/c it's an aluminum head??? This would be the first time I've ever read this.

Gee oh Dee

The 4.0 does not have an aluminum head that I know of. Anti seize should be fine.

Get it hand tight with the wrench, then maybe an extra turn or two.

You don't want to get crazy, but exact torque specs aren't necessary.

dukie564

snug tight, that's it

XJ5150

Thread in by hand on a cold engine until it stops, another half turn to a full turn with the socket. Never had an issue on any engine I have owned.

5-90

Typical specs are 10-12 pound-feet for aluminum heads, 12-16 for iron. We have iron heads on the 6-242.

Never-sees may be used - if you do, turn it to 1/2-3/4 turn past contact (if you're not careful, you can pull the threads out of the cast head with the wrought shell - iron or aluminum. Don't buy trouble, you get enough for free.) Torque spec becomes academic at that point - screw it in finger tight, then at 180-270 degrees with the wrench and stop. (For aluminum heads, add 120-180* with the wrench and stop.)

onestrongwriter

welp.. wrong thread sorry lol cant find a delete oops