So what would be the best plug to get for a ix with a stage 1?

 

i would of made them keep looking lol.... but they do come gapped but the outside of the box i believe says .033, which is why im going to regap mine to 25 and see how they feel and if it helps with my p0301 code i throw occasionally

 

On the sparkplug.com website I found these

http://sparkplugs.com/more_info.asp?AAIA=&pid=8327

They are supposed to be a copper substitute for the stock plugs for the IX. but if you look at the size (reach) they are not the same as stock.

Has anyone found a copper plug for the IX?

 

Question: Does't the IX Manual says to gap plugs on the IX from .20 to .24 max?

I see some of you are using gaps as hi as .33 - .25!
Is that right?

 

I would also like to know what the copper substitute thats one step colder for the IX is.

 

On sparkplugs.com at the bottom there is a link for advanced tuners. I clicked on that and then I entered in the following data, which I believe to be stock plug dimension. Can some one please verify that this data is correct.


threadSize=14mm
hexSize=5/8 (16mm)
seatType=gasket
reach=26.5mm
resistor=yes

The results are found here
Link

Will all of these plugs fit an evo IX?
Which one would be a copper plug of the stock heat range?

 

Well after reading all the stuff on NGK's website about spark plugs I think I am starting to figure this stuff out. sparkplugs.com only lists the following copper plugs that have the same dimensions as stock. the 5 or 6 seen here indicates the heat range (stock is 7). These plugs are hotter then stock and not what you want. One range colder than stock would be LFR8

LFR6A-11
LFR5A-11
LFR6C-11


The A or the C seen after the LFR6 indicates the type of tip design. I could not find much more info then (A-C) indicates special tip design, perhaps one is a V groove and another is not.

The -11 indicates the gapping.

ultimately I think I am looking for LFR8A, LFR8B, or LFR8C....I don’t really know which, the gapping they come with does not really matter.

Again these are copper plugs, not iridium like stock. I am looking for a cheap plug that can be used when I start playing around with meth and COP ignition.

 

im in the same boat... im looking for a decent copper plug that i can change out often. keep us posted... good work with the research

 

ILFR7H - OEM GAPPED AT .024" PLATINUM TIPPED ELECTRODE $11.99
LFR7AIX - SAME DIMENSIONS, GAPPED AT .028" $7.99
This is from Sparkplugs.com, the oem will last longer, but at a 33% price difference. I went with the second ones and will just change them out 10K sooner.

 

So if stock gap is .024, would it be a good idea to gap them down to .022 when running say 23psi with bpu's and tune?

 

Back from the grave on this one...wow, 2007 post.

What have you guys found for Copper plugs that work on the IX?
Any info / recommendations on heat ranges too is greatly appreciated!

 

has anyone run the autolite iridiums for our cars? they have them at autozone and i believe they were only 2.97.

 

No no no stay away there crap..

 

So I pulled my plugs a few weeks ago and found the previous owner had been using BKR7EIX gapped to .026...but the plugs are 7.5mm shorter than the OEM plugs!! The car was tuned by TTP at 26psi with no knock on those shorter plugs. Then I switched to the OEM plugs gapped at .024 and I started knocking. I am looking at the LFR7AIX plugs but if I was running fine with the shorter ones, I was thinking about just buying those again even though they're shorter but as long as the car runs fine I guess that won't hurt is what I'm thinking. Any opinions?

 

I got my spark plugs from sparkplugs.com. They were pretty cheap and I gapped them to .22