HackAbuse

Will one step down work with a 50/75 shot?

I dont wanna blow my engine, but at the same time, wi wanna have identical plugs

NJHK

If you blow your motor, your spark plugs would be the last thing to cause it.

HackAbuse

So whats the benefit of using colder plugs?

NJHK

I was just trying to say that if you do blow your motor, it would more than likely be because of something else and your spark plugs wouldn't be the root problem or cause.

HackAbuse

No I meant, whats the benefit of using two step colder plugs with nitrous?

IonNinja

if the spark isn't as hot you have a lesser chance of detonation

slowion2

there's nothing to "chance" considering they work fine and many people run them. if you really want to get technical, the shorter plug forces the flame to travel down towards the piston as opposed to out the side of the gap. there are a lot of LSJ's running the same plug too, and they have the same plug depth/length as the 2.2 and 2.4

yes as ninja said, it's to prevent detonation. you won't blow up anything, but it won't be fun when your ring lands are gone and such.

I'd go with 2 steps for 50-75. if you notice they foul out quickly, go back 1 step. I don't think you'll need to though.

06Pursuit

iTrader: (1)

thx for all the helpful info ion

Wyoming_Bass

i was just trying to say that there is a proper plug size and one step colder wasnt being an ass. everyone does what they want on thier car i would rather have the same size plug in my car and one step colder than a shorter plug one step colder

zomghax

LTR5IX-11 NGK Iridium stock heat range
LTR6IX-11 NGK Iridium 1 step colder
LTR7IX-11 NGK Iridium 2 step colder

Even with 94 ethanol blend I am still seeing 1-2 degrees of knock retard at WOT so I thought I might try the 1 step colder iridiums to see if that helps. Is that a waste of time and money? Is a few degrees of knock retard unavoidable with a stock tune, or should it not be happening? Could it be phantom knock? The 2.4L comes stock with the same plugs as the 2.2L which is why I'm here

HackAbuse

So I should be fine with BKR7E-11 plugs with daily driving?

What exactly happens when plugs foul out?

I dont want my car to take a **** on me when I'm driving somewhere

NJHK

It won't fire properly basically. More than likely if a plug fouls out, it's not going to be all 4 that foul out.

HackAbuse

NJHK, you're the god of ECOTECs, do you think I'll have any problems running 2 step colder plugs?

What symptoms are present when a plug fouls out?

I will order new plugs tomorrow probably, and will get extra plugs

I hope I wont be changing plugs all the time

NJHK

Not sure. Still a bit rusty as far as spark plus and steps go.

Symptoms? Loss of power defenitley.

Also remember, fouling out plugs is usually due to running rich. I remember when I flooded my motor, all my plugs were fouled. They have a dark, wet residue left on them and very black.

NJHK

Let me retract my previous statement...I'm thinking of wet fouling out.

NJHK

HackAbuse, look at this page, this will help you out in the future (just in case):

http://www.spark-plugs.co.uk/pages/t.../diagnosis.htm

slowion2

Hack they won't just up and **** the bed on you, which is what it sounds like you're assuming, but as Adam said you'll definitely have power loss from a less complete burn. like I said before, you'll be fine.

Wyoming sorry but you came across as if you were trying to be a dick about it. keep in mind, these guys seem more concerned with 2 step colder than just one. I did go back and look at my notes from last year and found NGK TR6 #4177 was what a lot of jbody guys were running. That might be better fitment as far as length but I'm not sure if it's one or two step colder heat range. I might try a set out but I'm not concerned that the 7E's are going to cause a problem. I think they would have in the past year and a half by now if they were going to. You know Dave Polley right (since I see you're cofounder of RME)? He knows me for a while, and will tell you I won't steer you guys in the wrong direction. Well, unless you break my sunglasses, but that's another story haha.

zomghax - lol nice name by the way. it might be unavoidable with stock tune, i'm not really too accustomed to the 2.4 right now, so it's hard to say. if you want to try them out sure, possibly try one step colder if it's just for a stock build with no nitrous or f/i and see how that works out. I've just always stuck to copper plugs since they're very affordable and have worked just as well as the iridiums in 90% of cases. only a few guys with pretty ***** out setups I remember had iridium plugs in there, and they even ran copper for a long while.

HackAbuse

so you have the 7E's right?

slowion2

yep, sure do