iridium plug question

[spectr019]

When ordering a set of NGK Iridium plugs, i couldn't find a "1-step colder" iridium plug, they only had a 0-step and a 2-step. I ordered the 2-step, and decided not to put them in until I figured this out. They are labeled BPR7EIX, and I'm currently using NGK BPR7ES. Is the Iridium BPR7EIX the proper cold-step level that I want, or should I have ordered the '0-step colder' plug? Thanks for your help.

Ben

 

[snowborder714]

Why are you buying iridium plugs? Is there are reason you need/want them over your current plugs? The ones you are currently using are the best application for our cars. If your car isn't running right, try the BPR6ES (as you will need a decent amount of mods and to also be running high boost, 18+psi usually, to benefit from the colder plugs). If you are running high boost, try the BPR8ES plugs. The iridium plugs you just bought probably cost a lot more than the ones you have now.

 

[spectr019]

yeah haha they did cost a lot more. I just thought they were a better plug all around, not in ways that they would give me any more power, but just a more top end plug. But yeah if the NGK BPR7ES is completely sufficient enough for our cars, then that's what I'm sticking with. I've never had a problem with them!! Thanks for the quick reply

Ben

 

[snowborder714]

No problem. The 7ES plugs are an excellent choice for our cars. So go get your money back

 

[Defiant]

Iridiums are meant for cars that require major work to change plugs, such as the lovely GM pigshit that calls for the engine dogbone to be removed and the engine tilted so there's room to get a plug out. Other than their longevity, they're no better plugs than regular NGK coppers.

 

[bpestilence]

The iridium plugs don't experience gap growth like copper plugs do. So they are for lazy people who don't recheck their gap periodically. But... I had an iridium tip break off of one, once, and luckily it got through the exhaust valve and turbine without causing any damage...

 

[TunaTalon]

The iridium plugs don't experience gap growth like copper plugs do. So they are for lazy people who don't recheck their gap periodically. But... I had an iridium tip break off of one, once, and luckily it got through the exhaust valve and turbine without causing any damage...

The Iridium tip may not wear down but the ground electrode will wear away causing the gap to grow. So even lazy old folk still have to check the plugs once in a while.

 

[housegsx]

I had iridiums in my car for whatever reason and when I replaced them the gap had grown to .050. No wonder it was missing.

 

[Car Cannibal]

I can vouch for gap growth on NGK 7's, damn 2k miles and all hells wacked out in my cylinders, thank god for my Crane ignition box.

 

[Defiant]

thank god for my Crane ignition box.

Which is probably what over-drove your plugs and eroded the gap.