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Old 05-10-2012, 08:45 AM   #1
nismopowerdqg
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Default Will this be a good replacement spark plug?

I have NGK platinums and they are a bit worn and the previous owner gapped them which i read is bad for the plug, i heard copper plugs were better for my set up (18g, 22psi w/ supporting mods) and didnt know if this plug would be sufficient or not. Its one of the only step colder plugs i can find in my town. Feedback is appreciated.

http://www.napaonline.com/Catalog/Ca...922_0137962118
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Old 05-10-2012, 10:52 AM   #2
GeneralTJI
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NGK bkr7e
part number 4644 at the auto parts

I've run all kinds of things, I run these gapped at .0.24 (built motor, cams, big holset turbo etc.)

Copper doesn't last as long as Iridium, but provides a bit better spark. Stay away from platinums...
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Old 05-10-2012, 11:16 AM   #3
nismopowerdqg
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Got the ngks. Thanks
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Old 05-10-2012, 12:02 PM   #4
nismopowerdqg
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UPDATE!!! one of the coils little connector "tits" is broken. will zip ties work to keep it secure??
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Old 05-10-2012, 12:36 PM   #5
ride5000
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yes, you just need to lock it on there.

tip: in nearly 10 years of replacing copper plugs every year, i have never disconnected my coils from their wiring harness.
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Old 05-10-2012, 01:28 PM   #6
nismopowerdqg
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Quote:
Originally Posted by ride5000 View Post
yes, you just need to lock it on there.

tip: in nearly 10 years of replacing copper plugs every year, i have never disconnected my coils from their wiring harness.
i dont disconnect them. it just fell off like it was already broken maybe from the previous owner. but thanks for the help!
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Old 05-13-2012, 10:44 AM   #7
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Quote:
Originally Posted by nismopowerdqg

i dont disconnect them. it just fell off like it was already broken maybe from the previous owner. but thanks for the help!
Often time the heat can make them brittle and they snap off just by touching them. Zip ties sometimes work, but if you get a misfire on that cylinder then you may need to epoxy it.

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Old 05-18-2012, 04:26 AM   #8
westsideguy
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Quote:
Originally Posted by nismopowerdqg View Post
I have NGK platinums and they are a bit worn and the previous owner gapped them which i read is bad for the plug
Just to clarify, if done properly gapping a plug is not "bad" for a plug. Technically all plugs are supposed to be "pre-gapped" for proper spark with the plug, but if you are going to do routine maintenance on your vehicle I would recommend getting your own spark plug gapping tool. There is a spec for your vehicle's plug gap, and you never know what the gap could be with the new ones "fresh out the box". For example I had 4 plugs I bought for my beater ford escort and there was an up to .020" difference between some of them. I used a gapping tool and got them right around .002" of each other. Of course getting the hang of gapping might take a bit, so I would practice on the ones you are replacing before putting the new ones in. FYI gapping tools are only like 5 bucks and that's a little pricey for one
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Old 05-18-2012, 05:56 AM   #9
ride5000
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the problem is that it is nearly impossible to gap a needle-point electrode (platinum, iridium) without damaging the surface.

this is a non-issue with traditional copper plugs.
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