i just got 6 nkg iridium IX spark plugs and im wondering wheater or not im suposed to adjust the gap on thease

 

Feel free to check them, but if they say they're pre-gapped (which they do, undoubtedly) no need to gap them (assuming they check out right).

People tend to damage the iridiums while trying to gap them anyway.

 

^ i agree never gapped my ngks g powers they come pregapped

 

As others have said. DO NOT GAP!!!!!!!!!

 

In all the spark plugs I have replaced (trust me, its a LOT), I have never purchased a set and had all the gaps been correct out of the box. 1 or 2, but never all 6. Always at least check them. Use a wire gauge to check them, not those .50 cent POS disc they sell.

 

on checking the gap

i had a set that said they were at .055 but ended up being closer to .075

always check the gap

 

Well said. I too have never experienced all 6 being the same.

 

I dont think he meant absolutely for accuracy perhaps as much as them nasty discs can damage the iridium tip if not carefull

 

How do you know what I'm running or how accurate my gap settings need to be? ***ume much do we?

'Good Enough' for you doesn't make it the right way. If you had any REAL mechanical back ground you would know that. :

 

Nice tactful response there JAMAHA80!

what exactly is considerd to be " real mechanical experience" ??
anyway there are valid points to both sides of the coin...
if care is taken, then there is nothing wrong with the disc. however I have seem them do damage . I personally use them, with no negative effect what so ever.

always check gaps! and for the "real" performance seekers...index them also.iirc we saw some hp increase as opposed to not indexing.(very minimal but it was there)

 

Well you do realize that you are talking to some one with a F/I car right? I mean you are talking about him getting bent about you giving false info but lets look at your response. Go ahead take a min. Once you have read thru your b.s then maybe you will see that good enough just might not be. You sir have a great night and o, dont worry i have a mechanial background also and 2 boosted cars. TTYL

 

hey man, I posted the tactful response thing befor I read your edit...
...it still stands! LOL!!

 

^

 

Thank you grammer police. Instead of heading off to College after High School I headed off to serve my country for 10 years, but thanks for calling me out on a minor gramatical error. I'll make several more, so you can go ahead and look for them. One thing I do not make however are mechanical errors, or gross missassumptions. Now, have you ever checked the accuracy of those disc gauges, or are you ASSuming again. Yes, I made the *** large, just like your being. Do you know what happens when you ASSume? You make an *** of YOU and ME. I have actually measured those disc gauges before, and guess what? Between three of them from the same bin, I found descrepencies between .02-.04 off, using a micrometer. Not a big deal huh? Okay smartguy. In this day and age where everyone is trying to maximize the efficiency of there cars for the best fuel milage possible, the difference between setting your gap at .038 and .042 can have a signifigant affect on your fuel milage, to the tune of 2-3+ MPG. But hey, it's not a big deal right?

The other major problem with those disc adjusters is that they can damage platinum and iridium tipped plugs very easily. Copper not so much, but iridium especially can be pretty fragile. Your one of those people that goes and spends $60 on spark plugs, only to adjust them with a .50 cent tool.

I bet your also one of those people who doesn't bother to use a torque wrench, amiright? I know, your calibrated elbow does the job just fine. Silly engineers, coming up with torque specs. Silly engineers, spending all that time figuring out the correct spark plug gap. Run what you brung, Git R Dun!!!

I asked about your mechanical background because anyone who has done any studying or research into the cycles of the combustion engine and how spark plug gap and heat range affect the propagation of flame, combustion temperature, and cylinder pressure, would not so quickly dismiss spark plug gap so quickly, at least not without some real world data to back themselves up.

It's clear though that you have diarea of the mouth, or in this case, of the keyboard. I'm a nice guy normally, but when I see people spreading bad information on these forums, it really pisses me off. We have enough dumb asses here already, asking the same question day in and day out.

Thank you for contributing to the deliquency of the .Org. I hope no one here allows you the diservice of working on there vehicle, or accepts your halfwitted advice.

 

Keep on getting into it with mods, and I foresee a short future on the org for you.

Just a thought. mtrai is an asset around here, whether or not you may believe so.

 

rofl i use the disc when i first started. So I go in and ask for a wire gauge and the salesmen asked me why and I said i didnt want to use the disc, just seems to cheap and I didn't like the idea of it. Then he was trying to tell me that the disc just fine and the other sales dude had to tell him that i could buy what i wanted. Get the right tools, makes it so much easier don't take the **** personal. Be the better man, he was just making the post funny in my mind.

 

lmao, +1 on people using it as a wedge. thats the way i used to use it, and i always wondered how the heck i can gap plugs and not have it scratched up and eaten into....thats when someone pointed out to me the darn hole was actually for opening the gap. i felt like an idiot

 

 

You came on here and posted that spark plug gap doesn't matter, NA or FI. Who is closed minded and spreading bad information?

Your not speaking your mind, your running your mouth. Big difference.

I won't ban you for speaking your mind, but don't jump on other members just because they agree with me. pmohr happens to also be a valuable member here, and knows a thing or two about cars. You are proving yourself less valuable by the second.

Try reading these:
http://auto.howstuffworks.com/ignition-system2.htm
http://www.ngksparkplugs.com/tech_su...x.asp?mode=nml

And if you say your not going to bother, your just proving your a closed minded fool.

 

So when do I get mod privs?

 

 

Well you have obviously proven how far your knowledge and common sense run. I wont say any thing else to you since you don't have any input any ways. And a rent a cop vibe? Wow i like that one. Did you think of that all by yourself? its cool, i understand that the less fortunate come to places and try to make a presence. Some of us don't need to do that since we have been here. Thank you and have a good night.

 

And... for some reason, you think you're smart?

 

DO GAP THEM!!! I just installed ngk platinum spark plugs that were oem nissan and came from the dealer and no of them were correct gap. They all were off by a bit. When I took the old spark plugs out which were installed at the dealer during my 60k tune up they too were all off and not gapped. Now I installed the new plugs and gapped them before I installed them and car runs amazing like brand new. I know people say plugs don't make a difference that you can feel but I can feel it. Much better low end response now. Not sure it was because I gapped the plugs but my advice is check the gap and if its off then gap them.

 

Says the guy who, not even 10 days ago, was interested in becoming a mod:

Evidently, frustration = win, Jamaha80 = loss.

 

MODS why do you guys let this kind of stuff go on for so long when there is no helpful info being put out. This thread should have been closed at post #12 or 13 IMO and they could have continued their "friendly banter" in PM's to each other.

 

there is a lot of good info here if you can dig it out of the banter.

mtrai760, thanks for serving our country! that is very commendable thank you.

anyway ,not to argue...however, I was wondering where this 2-3 mpg difference data can be found? that is interesting. i would like to see that simply because there are sooooooo many factors that can change fuel milage by 2-3 mpg and it would be interesting to see the methodology of that data.

next , i would bet if three people gaped a plug with the same equipment, you would get three different gaps if you put a micrometer on it. people have different "feels" for that kind of stuff. so in my experience( i can give credentials) .02~.04 difference is not that critical. befor you flame me for assuming,this is not an assumption...this is real world road and track experience with quite a few applications far beyond a turbo maxima.now I am not saying that I dont strive for exact measurments,I do, but there will always be slight differences.
I appreciate everyones infromation. I dont think any of it is "bad"(in this thread at least) . I think there are different extremes and somewhere in the middle is ok.any tool used correctly is good...any tool used incorrectly can be damaging

so the consensus about checking the gap on new plugs seems to be a big YES! LOL