06black

alrite i've steped down the pully size and done an exhaust and intake and such...i also swaped out my plugs in faver of the NGK-BKR7E now with my 2.9puley do i need to go another step colder??? will it help???can it hurt any thing?

Brian MP5T

It will not "Hurt"

Avoid Iridium Plugs. Stick to regular NGK

silverSS

those plugs should be fine , check them after a week or so, and see how they look, the tips should look almost like a light chocolate color, black would be bad.

Those are not the copper plugs, which you may want to consider, im actually running the same plugs as you with a 3", for almost a month, doing fine....but i dont think you need to go two steps colder for a 2.9, 1 step should be fine

Chevypowered

I've been thinking bout getting a step colder plugs for mine, anyone have a link to where we can get them? ZZP only has the Iridium plugs.

silverSS

yea avoid Iridium

silverSS

here you go chevypowered


http://www.southfloridapulleyhq.com/...sss/ec_ngk.htm

Chevypowered

Thanks I just got them, for $15 why not.

silverSS

how do your stock plugs look?

i swapped them out right when i did the pulley swap.

Chevypowered

I have not taken my stock ones out yet, I haven't really thought about it since i rarley get over 12.5 psi but when i travel to a lower elevation i do so these should help.

silverSS

your stock plugs should be fine, but yeah its a smart idea to go one step colder..

Brian MP5T

Two Trains of thought on Forced Induction and Iridium..

Iridium uses a very small annode that can withstand silly heat
Regular Spark plugs cant take unreal heat but because they are larger, they can disipate it fast.

The basic problem is that in some cases, the iridium plug gets so hot that it can actually be the cause of detonation.

06black

so 1 step colder is gonna be fine?

Brian MP5T

It won't hurt with overboost.

06black

ok so if you were to do this...1step cloder or 2steps colder?

GotBoost?

i just went to autozone and told them that i need some ngk plugs for my car. i didnt get any colder ones. They are the stock number 6962 bkrge. I just needed to change them because i was getting miss firing.

06black

that would work with stock boost levels...but not with the higher number i'm runing

Brian MP5T

The whole point of running colder plugs is to reduce the risk of detonation as you increase the boost...

If GM has Plug "X" for Stock Boost. Then if you go up a bit, then one step is required.

If you plan to Silly overboost, then you go Silly ranges colder.

Brian MP5T

Stock Boost ... Stock Plugs

You don't need to go colder if the Boost han't changed.

06black

whats this silly thing you keep speaking of?? i just want to kno what you would run with my set-up....1 step or 2 steps colder????

p7x

pulleys smaller than stock to 3.0 = 1 step colder
pulleys smaller than 3.0 = 2 steps colder.

06black

excelent!

thank you sir

brian you think thats rite?

Brian MP5T

The Colder plugs are ment to be used a steps as the boost level increases. If you go too far, you might find on cold days that the car will not run well until it's warm.


Pete's Post is acceptable.

p7x

O thank you all mighty car god.

Brian MP5T

You coming over for movies or what BIACH?

p7x

no queer