Um..I thought they last longer then copper? Is it a big problem that I am running Iridium or can I just keep them in until I need new ones, then get copper?

 

If borderline at 6000ft go with the warmer plug, at sea leavel go with the colder

 

BBY, yes, Iridiums last longer than coppers in ideal situations, but that's a low boost and minimal mods. When running higher boost and more power on a daily basis, it's better to have coppers for reliability and because they're so much cheaper to switch out.

If your iridiums are doing fine for your setup, then by all means keep using them until they foul out.

 

Mr Warr I have been trying to get a hold of you on AIM all day Im guessing your stayin away from it. So 8s gapped at .24 cool. Can I stay at 24 psi gauge pressure im scared of 26

 

My knock voltage lowers when I run 8's over 7's on 91oct. But what do I know.

 

get whatever copper plugs and get an ignition amplifier. hotter plugs are better.

 

isnt BR for nitrous cars.........grrr im confused now with what to go with.....BPR or BR???

what are the benifits and negatives of having a protruding tip?

 

Go with BR.

BPR's have an exposed electrode. BR's do not. I've had better luck with the BR's and others have as well.

 

Crap you already know the difference lol

The non-protruding tips seem to run a lil cooler. I've never got a P0300 with them either.

 

is it a fact that it runs cooler?

im just curious so i stick to one plug and thats it ..........but i keep jumping back and forth trying both out and i see no diffrence....grrr fustrating

 

Yes, I believe it is 30*F of additional heat removed from the cylinder.

 

It is a combination of everything, plug, octane gas, boost levels, gap. For example a honda tuner friend of mine was tuning a car c16 and a 7 heatrange plug.. 1.8l motor @26psi car made 505hp.. @26psi. He brought the car to the dyno next day on same plugs and gas(almost gone) and the car made 501hp baseline and he wanted to up boost which is why he brought it back. He swapped plugs to a 9 heatrange plug to accept the higher boost level and baselined at 497hp with the colder plug same boost. He finally ran out of gas and was not able to get c16 that day and only had 110 octane. So he fills up with 110 octane and 9 heatrange plugs and the car I swear to god went from 497hp to 605hp on the very next pull. He was in shock, I was in shock and Stoopid aka Jason was in shock. So we figured the c16 was too hard to burn even though we had a 7 heatrange plug.

 

More than I, I'm sure, but I'm talking about 6000' where 91oct is like 93oct. That's why they have 85, 87, and 91 here.

 

What gap is advisable with the 8's running on pump and 21#? I was surprised to see on the racing forum that the guys run a tight .020". Is tight better with the 8's?

 

I run BR8ES with a .025-026 gap and it works great, no misfires what-so ever.