Denso Irridium Question!

[Mr. 3]

Alright guys,
I just got my plugs and now I'm trying to find the torque specs.
I found this here, but I have a couple questions:
Installation Guide: DENSO Iridium

--I know that it's a 14mm thread but do I go by flat seat or taper seat?
--Do I have a cast iron head or aluminum head?

[Mr. 3]

Originally Posted by Mr. 3

Alright guys,
I just got my plugs and now I'm trying to find the torque specs.
I found this here, but I have a couple questions:
Installation Guide: DENSO Iridium

--I know that it's a 14mm thread but do I go by flat seat or taper seat?
--Do I have a cast iron head or aluminum head?

Never mind.
I just found this thread and it answered my question.
We have aluminum heads and the spark plugs have a flat taper, so we are tightening the plugs to 15-22 ft lbs.

Notice the print below though about if adding any lubrication to the threads then cut the torque settings by 1/2.
I'm definitely using the anti sieze because these plugs that I got are the 120,000 mile plugs.

So, it looks like I'm torquing them to 7.5-11 ft lbs.
Thanks a bunch guys!

I took some pics for those who are interested in the long life plugs and not the power irridium.

[Splicer]

Thanks for the update! Now, a question... have you been accurately tracking your fuel mileage (for a baseline)? I'm curious if you'll notice any change with the new plugs -- or any change in the way it runs, for that matter. I'm guessing no, but some guys have reported changes after installing a different type of plug.

[Mr. 3]

Originally Posted by Splicer

Thanks for the update! Now, a question... have you been accurately tracking your fuel mileage (for a baseline)? I'm curious if you'll notice any change with the new plugs -- or any change in the way it runs, for that matter. I'm guessing no, but some guys have reported changes after installing a different type of plug.

It would be nice to know but this is my wife's ride.
We both notice how much smoother it is now though.

[Splicer]

Glad you noticed some improvement Makes ya feel better about spending the extra $$

[BLDG MAN]

Originally Posted by Mr. 3

Never mind.
I just found this thread and it answered my question.
We have aluminum heads and the spark plugs have a flat taper, so we are tightening the plugs to 15-22 ft lbs.

Notice the print below though about if adding any lubrication to the threads then cut the torque settings by 1/2.
I'm definitely using the anti sieze because these plugs that I got are the 120,000 mile plugs.

So, it looks like I'm torquing them to 7.5-11 ft lbs.
Thanks a bunch guys!

I took some pics for those who are interested in the long life plugs and not the power irridium.

Did you check the gap or just install them?

[Mr. 3]

Originally Posted by BLDG MAN

Did you check the gap or just install them?

I checked the gap on all of them before I installed them.
They were all gapped correctly.
No adjustments needed to be made.