NGK7's v-power should be copper plugs which you can gap.

You can also gap iridiums. You just need the proper gapping tool, and make sure you are careful. I run iridiums and have gapped them many times.

 

Well you see I bought the iridium 8's because I was thinking my plugs were too hot but after looking at them again I think they're ok where they are. once I start tuning things may change, so I may hold on to them.

 

I think you're exaggerating a tad on the tune there buddy. Not sure about stock, but the stage II tune is set to 10:1 at WOT. Yeah it is richer than these cars like, but not dangerously rich like an 8:1 aft or anything. Keep in mind the money zone for the lsj at WOT is about 11.1-11.3. Certainly not the best tune though. And yes...it has everything to do with the idc. The danger comes in when they can't pump enough fuel into the cylinder and sparks a lean mixture as a result of going static.

but I digress. this is a discussion about spark plugs, not idc's and tunes. Back on topic....

 

I use 1 step colder iridiums gaped at .032. Had them in for 19k miles. You guys want to quit changing plugs every 3k miles? Here's your answer.

 

No exaggeration at all, the stage 2 cars run at 10 and lower for wot just as you said. The aem wideband gauge can only read 10, so if it is being pegged expect it to be a tad lower then that. That is a lot richer than any car likes and can be dangerous on a fresh build, but generally speaking no it's not a huge issue. Also our "money zone" as you call it is much higher then low 11s. It's closer to high 11s to low 12s as are most vehicles running gasoline. You will learn these things the more time you spend on a dyno and the more tuning time you have. Setup a car running 10, 10.5, 11, 11.5 and 12, tell me which feels the best and what the car liked the best and what results were the best. It's not the 11 flat .

I do agree with you though that idc's play a huge roll etc, however not with stock/gm stage 2 cars which is what I was talking about specifically and how there 10 afr at wot leaves a lot to be desired.

Back on topic I am going to grab a new set of plugs, want to see how high I can gap these bkr7e's in the winter time on the tvs before blowout. I am guessing .033 will be ideal for my setup.

 

This isn't the answer as running these plugs for that amount of time is not ideal. Pull the plug and look at it, you won't like what you see. Once you are around these kinds of things long enough you tend to realize what high temps and over fueling can do to these plugs, let alone for 20k miles.

 

Agreed, but i'm not over fueling and i have very low iat2's. I take a peak at the plugs every fall before i dust it off for winter, and they look great. It's taken me four years to get those 20k miles though, as i drive the Gn and Gto in the summer.

These motors should not eat plug with proper tuning. No motor should eat plugs with proper tuning.

 

Thanks guys, yeah this car is basically stock with about 72k miles. I am going to go with ngk bkr7e gapped at .032. Now where can i find them ? lol

Thanks alot!

 

If your car is basically stock I would try a slightly larger gap.

Try 0.035" first, and see how it feels. If you have no spark blowout it will be a better gap for your application.

0.032" is usually the perfect gap for lower pullied cars, but all cars are different so try some gaps out until you find the best one for your car.

 

advance auto, & i think napa may carry them as well

 

nice, I dont have a wideband or anything so I wont really be able to tell if there is spark blowout or anything. Stock

so i guess i need to be safe! LOL

 

You dont need a wideband to know that you have spark blowout. Spark blowout feels/sounds like you are hitting a rev limiter.

I ran a 0.035" gap for years on my car.

I didnt start experiencing spark blowout until I bolted on my different blower. I tried all the gaps between 0.035"-0.032", and literally chased the spark blowout away. At 0.035" i started experiencing spark blowout around 5,500 rpm or so in 2nd gear. At 0.034" blowout was noticed around 6,000 rpm, and at 0.033" it moved on up to around 6500 rpm. Finally, 0.032" proved to be the best gap. Zero spark blowout, and was the largest gap i could run without issues.

This is why I always try to stress to people not to immediately gap at 0.032". That is not always the best gap for everyone. While it is a very common gap for smaller pulley balts, it wont be the "best" for a fairly stock car.

 

.035 you say!

I will give it a shot!

 

actually since ive never done plugs before, is there a way i can check to see what my stock plugs are gapped to when i take them out? Car runs fine but im just a noob when it comes to plugs lol.

 

Pick up a spark plug gap gauge. They sell them for about a $1 at any Autozone, Advanced Auto, etc.