brookliner7

I went to the local parts store and they gave me some 1 step colder plugs for my SOHC y8 turbo app.

they gave me ZFR6F-11'S.

I have searched the forums and have seen people using the ZFR6J-11;s.

SO, I'm just wondering if there is any difference before I gap them and install them.

Joseph Davis

D-series vs B-series plugs. D16Z6 vs B18B1 one step colder, anyway.

I have four of each set sitting here, I'm drunk and bored, why don't I slip them out of the box, take some shitty phonecam pics, and try to guess what the difference is without consulting NGK.com?

BRB.

Joseph Davis

w00t!

That was easy, -F's for teh win!

If the phonecam pics don't expletive me in the *** with lack of clarity, you'll be able to see why! Waiting for them to hit my inbox now.

Joseph Davis

Hi, meet the plugs, meet the grandparents.




Shee-it, son, I am drunk. This is thre best pic I could get. I suck at life, and stuff.



Well, for all intents and purposes that pic will suffice. Yes! Believe it or not.

The ZFR6F-11 is on the left, and ZFR6J-11 is on the right. They have the same exact dimensiones except the ZFR6F-11 has more insulator ceramic with less exposed center elecrode. Looks to me a great way to reduce arcing over/misfiring and suchlike, with all else being equal. Squint real hard, you'll see what I mean. The white ceramic protrudes higher on the ZFR6F-11 on the left, with less exposed center electrode.

brookliner7

LMAO!

For being drunk as hell, you have been most helpful.

send a shout out to the grandparents!

Joseph Davis

Forty-five seconds of searching on ngk.com would have told you as much.

I think I learned a bit more than that, because I can actually see the plugs, and all you guys get are my broke-dick phonecam pics.

But, thanks for the thanks

raene

Thoughts on compression ratio differences between the two plugs?

Minimal?

Joseph Davis

Super minimal. 1/15th of a cc, to make a guess.

The plugs are *identical* in every dimension, except the ceramic comes up a little higher on the ZFR6F-11.