I just purchased the NGK Iridium spark plugs. What is the gap that these need to be set at? I just starting installing them and realized that I need this information. Thanks.

 

A consistant .040 would be good, No more than .043 IMO. At .040 u arent working ur coils too hard, but should still get a good burn.

 

The owners manual will tell you that info.. Or a search.... As the search police come and arrest you now..

 

Great thanks.

 

yea .040 or .038 is good, mine is supercharged and procharger suggested .032 so they dont blow out ...good luck!

 

Specs call for .043 and I like running them a little tighter for everyday----He's running N/A so actually .038 wouldnt be bad, just not quite so much "flash"

Keep in mind , that to a point , the larger the gap , the more of an explosive flash u get because the plug is demanding it in order to make that "jump" from electrode to Ground. But u are also working ur Coils harder

Keep in mind also that with NGKs the larger the # the COLDER the plug

 

I am actually running a 50 shot of NX. So should they still be set at .040

 

I wouldnt want to make a recommendation on that ---I know FI and NA but am shakey on Nitros O

 

would it be safe to just set them at .040

 

With my limited knowledge on that I would say NO MORE than .040

 

im gonna go with the .038 and see how that runs.if it needs to be changed it only took about 30min to swap them out

 

Course , It doesnt hurt to gap the plugs u take out to get an idea of what they wre gapped at ---If they are plats or irids it will be pretty close to get an idea ---And also compare the #s to see if they had gone hotter or colder

Also chk color of the old ones---The plugs are the eyes to the soul of ur motor

 

If I hear a bang and see black smoke towards Schertz I will know that it is back to the Drawing Board --D'OH !!!!

 

So, you got the one step colder plugs?

Have you actually used your 50 shot? When I installed my kit I did one run with a 75 shot and turned right back around for the 100 shot...then back for the 125 shot...then back for the 150 shot, lol! Go 100 shot unless you have a utec or something to take out timing, then go bigger.

 

Okay this is what I have. I have the r5671a-8 ngk plugs. The male threaded area is shorter than the ones that were in the car. The ones that were in the car are plfr4a. So basically the plugs i was given aren't going to work. What is the part number that i need for one step colder. Also, I will be running the 100 shot when my aem cai gets here.

 

Laser Platnum ( Factory ) PLFR5A-11
PLFR6A-11 Colder
PLFR4A-11 Hotter

Iridium IX LFR5AIX-11 Standard
LFR6AIX-11 Colder
LFR4AIX-11 Hotter

Havent a clue what the R5671A-8 is, Take them back and find out, and if they screwed up, shove them up their ***. Mistakes Blow Motors. And the idiots need to be accountable.

And in that vain, It wouldnt hurt to chk MY numbers, although, those are the numbers I use with success. Good practice to Verify-Verify-Verify

Napa in Seguin, that I have used for 12 years, has a staff of 4 that have been there for those 12 yrs plus with extensive knowledge. Scott,Don,Albert,Greg

Scott is best with the NGKs--Call cuz they are usually special order but if u call early u can get them that day