Spark Plugs Cofused Here
#27
^^^add to that
e = copper, you'll have to check/change more often, but best conductor, and can gap as you like
eix = iridium, longer lasting, and not suppose to gap
to help with any confusion
e = copper, you'll have to check/change more often, but best conductor, and can gap as you like
eix = iridium, longer lasting, and not suppose to gap
to help with any confusion
#28
#30
Senior Member
Join Date: 12-29-05
Location: Niceville, Florida
Posts: 1,457
Likes: 0
Received 0 Likes
on
0 Posts
#31
Ok so today i went to Napa to get new spark plugs, i ordered the NGK BKR7E cause i have read in here that they are the best,
But the guy up front said that those where only some kind of resistors, and that they wont fit my SS/SC..
So i came home and looked at Advanced Auto Parts and they do have them but the will only fit 98 Aston Martins, 04 Volvos , 98 Grnd cherokees but it said nothin bout Cobalt, not one thing.
So i really would like to know if the NGk BKR7E fit the cobalt 2.0 or i have to get other ones,
I saw some NGKs laser platinum but i want either copper or iridum for my balt.
Help please!!
But the guy up front said that those where only some kind of resistors, and that they wont fit my SS/SC..
So i came home and looked at Advanced Auto Parts and they do have them but the will only fit 98 Aston Martins, 04 Volvos , 98 Grnd cherokees but it said nothin bout Cobalt, not one thing.
So i really would like to know if the NGk BKR7E fit the cobalt 2.0 or i have to get other ones,
I saw some NGKs laser platinum but i want either copper or iridum for my balt.
Help please!!
#32
Senior Member
iTrader: (7)
This is a stupid argument. I had autozone call NGK (a while ago) and they stated that brk7e is the one step colder plug for the ion redline and cobalt ss/sc. The ions came with ngk-r plugs from the factory (I guess 6e?). Iridiums are not factory replacement, factory is copper plugs. It really shouldn't be this hard to figure out. Since people have been changing plugs for years it's autolite 3922 or brk7e or brk7eix for one step colder plugs. Autolites run worse than the ngk's in my car but it's different for everyone. Denso makes plugs too I believe it's ix22 for the 1 step colder but they don't make copper plugs that fit to my knowledge.
#33
Senior Member
Engines are designed to have the best combustion at 500C - 850C. If the combustion chamber is below that you may not be able to burn all the fuel. If it is above then you get detonation. A one step colder plug typically reduces the combustion chamber tempuratures by 75C - 100C.
#34
Senior Member
iTrader: (18)
Join Date: 12-20-07
Location: Jeannette, PA
Posts: 3,055
Likes: 0
Received 0 Likes
on
0 Posts
^^ Good explanation!
Most people think a spark plug's only function is to make a spark. Really they are extremely important in the heat transfer in the cylinder head.
With that being said, what is the guidline on when to go from a stock heat range to one or two steps colder?
I run a 2.7" pulley with a custom tune on the BKR8EIX (2 step colder Iridium NGK plugs) and the car seems to run great except for a few occasional random cylinder misfires, which the 60 pound injectors are probably to blame. (they don't flow well at low rpms)
So do you think 2 step colder is overkill for a 2.7" pullied car?
Most people think a spark plug's only function is to make a spark. Really they are extremely important in the heat transfer in the cylinder head.
With that being said, what is the guidline on when to go from a stock heat range to one or two steps colder?
I run a 2.7" pulley with a custom tune on the BKR8EIX (2 step colder Iridium NGK plugs) and the car seems to run great except for a few occasional random cylinder misfires, which the 60 pound injectors are probably to blame. (they don't flow well at low rpms)
So do you think 2 step colder is overkill for a 2.7" pullied car?
#35
Senior Member
I would think that 2 steps colder maybe a little much for a 2.7 pullied car, but the problem with combustion chamber tempuratures is that there is really no way to tell what they are. You pretty much have to play a guessing game. If I had to guess, I would say that you could probably get away with running 1 step colder with a 2.7, but it maybe close enough that you can get away with 2 steps colder. It would also depend on what cooling mods you have done as well to keep IAT2 down.
#37
Senior Member
It all depends. Since there is no way to know what the temps are like in the combustion chamber, all you can do is guess. If you think your car is putting out 300hp or more at the crank, then you may need 2 step colder plugs. Some mods, like meth, by cooling the charge air also will help keep combustion chamber temps down therefore allowing you to run a hotter plug.
Thread
Thread Starter
Forum
Replies
Last Post
agentirons
Electronics, Audio, and Video
2
10-16-2015 02:11 AM