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Old 07-10-2002, 01:12 AM   #1
Hojai
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Default what spark plug to use?

right now i am using the NGK 8 degree spark plug which i bought from HK. But, i am wondering what brand and which spark plug to buy later?
by the way my car is turbo'd with Tec2(don't know if that would make a difference). I want something that can be used daily and ocasional track day(sometimes hot weather).
is 8 degree enough?
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Old 07-10-2002, 01:46 AM   #2
kastle
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NGK BKR7EVX-11 SparkPlugs... that's what I'm running (ok, have installed) in my RS-T. Shiv recommended too
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Old 07-10-2002, 01:55 AM   #3
Hojai
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but isn't that higher degree like 8 or even 9 is better?
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Old 07-10-2002, 10:41 AM   #4
8Complex

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Higher degree is good to a point. It doesn't soak as much heat in, so it's effeciency in easy driving situations are a little worse. I will be running 8's in my kit, will see once it's going... I may switch to 7's again.
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Old 07-10-2002, 12:35 PM   #5
RallyNavvie
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I'm running stock NGK copper plugs gapped ever so slightly different than OEM. What are they, BKR6E or BKR7E? Can't recall offhand. Had the one stage cooler plug in before and it didn't make much of a difference with the ignition system. The guy who helped me with my Haltech also said that certain platinum plugs are bad with our wasted spark ignition. Something about how the return charge could light up the plug again and cause a misfire because of the higher conductivity. And if the copper plugs work fine, why change?

~Garrett
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Old 07-10-2002, 01:09 PM   #6
Mariano
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I'm running Bosh +4 platinum and they RULE!!!!. Previously I was running NGK "V" Power (can't remember #) but a buddy of mine with another RS-T recommended the +4...

Mariano
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Old 07-10-2002, 01:29 PM   #7
8Complex

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IIRC stock MY98 was BKR5E-11, and stock MY99+ was BKR6E-11.

I use BR8ES's or BKR7E-11's, IIRC.
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Old 07-10-2002, 03:37 PM   #8
Eric SS
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Quote:
Originally posted by Mariano
I'm running Bosh +4 platinum and they RULE!!!!. Previously I was running NGK "V" Power (can't remember #) but a buddy of mine with another RS-T recommended the +4...

Mariano
Dude, I wouldn;t run platinums in a Turbocharged car, especially the gimicky +4's

Eric
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Old 07-10-2002, 04:07 PM   #9
Mariano
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Eric, reasons why not to???

My engine has been running nice and smooth....



Mariano
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Old 07-11-2002, 12:57 PM   #10
RallyNavvie
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Partially because your engine should run nice and smooth on NGK copper plugs which can be had for under $2 a plug. Also because of what I just said previously about our ignition systems and plugs with high conductivity.

~Garrett
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Old 07-11-2002, 01:47 PM   #11
Eric SS
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Quote:
Originally posted by Mariano
Eric, reasons why not to???

My engine has been running nice and smooth....



Mariano
Since I don;t feel like typing the whole thing out again, here's a cut and paste from a reply I made in a previous thread on this subject. A quick search found it:


Don;t get Platinum plugs unless you plan on only changing your spark plugs hardly ever.

Platinums were not designed for performance engines or engines that are driven hard. The ywere designed to be put into cars that don;t need maintanace for 100,000 miles or so because the platinum lasts a while.

HOWEVER:

In my experience building engines I would never put them in a car. here's why: What the platinum refers to is a tiny piece of platinum that is somehow stuck onto the ground strap. What I have seen in high performance engines is that that piece of platinum can fall right off! Now while this isn;t really enough to do any damage to the vlaves or anything, it makes your spark plug gap go from .040 to about .076 or so! That is a huge gap and will make you lose power and even cause a spark to be blown out under boost or nitrous use. (ADDED FOR THIS THREAD: A flame out under boost is a serious problem and WILL cause detonation.)

So, Platinum is not a performance thing, it is a "I'm to lazy to charng my spark plugs every 30,000 miles or so" thing.

Eric
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Old 07-11-2002, 04:02 PM   #12
Mariano
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Talking

Thanks for the reply... I guess you have a point. I'm just waiting for a set of HKS iridium plugs or something similiar..... and I do change my sparks more often than it is required (I'm kind of a maniac)

QUESTION: Does the WRX (02) sparks work on our cars?

saludos,

Mariano
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Old 07-11-2002, 04:03 PM   #13
Eric SS
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swap and N20. gone. : (

Default

Quote:
Originally posted by Mariano
Thanks for the reply... I guess you have a point. I'm just waiting for a set of HKS iridium plugs or something similiar..... and I do change my sparks more often than it is required (I'm kind of a maniac)

QUESTION: Does the WRX (02) sparks work on our cars?

saludos,

Mariano
If you cahnge you spark plugs more than is required, don't waste time on Iridiums either. Those are the new Gimmick that lasts even longer than platinum. Just get NGK Copper V-Power plugs. THey are an awesome plug. That's what most of us use.

Eric
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Old 07-11-2002, 04:19 PM   #14
Hojai
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so Iridiums plugs are not good either, right?
and i should choose those NGK Copper V-Power 7 or 8 degree plugs, right?
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Old 07-11-2002, 05:29 PM   #15
Eric SS
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2000 2.5RS w/ EJ22T
swap and N20. gone. : (

Default

Quote:
Originally posted by Hojai
so Iridiums plugs are not good either, right?
and i should choose those NGK Copper V-Power 7 or 8 degree plugs, right?
Use the 7's

Eric
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Old 07-12-2002, 11:55 AM   #16
RallyNavvie
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IIRC I remember seeing a box of NGK copper plugs sitting in the service van for the Subaru Rally Team USA. They don't seem to need any fancy plugs. I'd also go as far as talking to a UK WRX owner and see what they use in a lightly modified STi.

~Garrett
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