Ngk Iridium Spark Plugs?

[RedEmblem]

Hey,

I've heard that Iridium (NGK in particular) spark plugs will destroy the coil packs. Is this correct? :S

[Bobjones]

Ummm NEGATIVE

[plaganis]

I don't believe they will destroy the coil packs, but if you have standard coils irridium plugs will make them work harder. For the best performance with these plugs you probably need a set of split-fire coils and have your plugs gapped correctly. i.e. high boost smaller gap around 0.8 to 0.9mm. Standard boost then the 1.1 gap will work ok.

I changed to NGK irridiums about 4 months ago and had nothing but trouble, misfiring, hesitation in the mid rev range. The smaller gap solved the misfiring but the car just never reved the way it used to. This is because my standard coil packs couldn't handle the irridium plugs.

I recently changed my irridiums to NGK copper ®, gapped them at 0.9mm and the car runs like a dream. They will only last about 20-30k depending on how you drive, but for $20.00 for a set of 6 who's complaining.

If you feel that you need the better plug, best to stick with NGK platium. The only problem is they come pre-gapped so you need to order them with your preferred gap.

Paul.

[noise]

stock coil packs = copper

after market coil packs = iridiums

[RedEmblem]

umm, okay. So, should I be overly concerned about this? Does damage usually occur within weeks, or do I have a few months?

[W3asel]

How much would iridium coil packs cost??????

very interesting...

never heard this info before

[NathR32]

no there aren't iridium coilpacks, noise was just stating that iridiums would work better with aftermarket coils, thats all.

[RB30-POWER]

the only thing that will be hurt is your pocket!

spending big money on plugs that arent needed.

bcp coppers anyday of the week for me

[plaganis]

umm, okay. So, should I be overly concerned about this? Does damage usually occur within weeks, or do I have a few months?

<{POST_SNAPBACK}>

Its not really damage that occurs, it's just that they don't work as well. Especially if the coil packs are getting older this doesn't help. Eventually of course a coil pack will die. If you stick with irridums then use splitfire coils, around $800.00.

Paul.

[RedEmblem]

Oh well, thats cool. I'll just replace them when I do an upgrade later on.

Thanks guys.

[Angry Fist]

in a good way thats good to know..when I bought my skyline almost 3 months ago, my mate made me buy the iridium plugs. Spend a fortune, then figured it was too much hassle to change them, on account of the ornament and piping covering up the plugs and coils..so they've just been sitting there in my garage for the last 3 months...

[Matty 31]

geez....i did spend a fortune

120 bucks worth of em and i had one blow to bits (partly due to injector failure)

how easy to get the copper ones? anyone got the order number??

[RB30-POWER]

NGK

bcpr6es 0.8mm gap

bcpr6es-11 1.1mm gap

a few bucks each plug at most.

[7yphon]

Hey can someone please explain why you guys are making the spark smaller??? I dont understand, really it doesnt make sence, well not for me anyway.

I thought the bigger the spark the better the bang?

also matty_tonkin Super cheap sell them, $20 for a set of 6

Edited December 26, 2005 by 7yphon

[Midnight R33]

The deal with closing the gap is that with running higher boost the forced air can blow the spark out.

Which causes the car to go and sound like a heap of crap when it hits full boost.

I bought Iridium 0.8's for my car when it came over because even though running factory boost levels it wouldn't handle it when it hit around 5000rpm.

And plugs that were in it were Iridium 1.1's

but ive heard that compared to japan our premium fuel quality would be there everyday cheap stuff.

Thats what i know anyway, hope it helps.

[Busky2k]

NGK BKR7E

NGK's V-Power Coppers.

The only plug you'll ever need.

Edited December 27, 2005 by Busky2k

[7yphon]

hmm Interesting, Ill have to look that up :S