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Old 03-12-2004, 02:38 AM   #1
Benjamin Tang
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Default spark plugs... where to buy?

my vf39 is (finally) going in soon, and i have to find plugs one step colder than stock... where do u guys get your plugs locally, and which brand should i be using?
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Old 03-12-2004, 08:33 AM   #2
bender
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I get mine at napa, but you can pretty much get them anywhere you want.

as for the type, it person preference, IMO. I've been running the Bosch +4 the last few years on my subie, and I just picked up a set on NGK idiums(sp?) a few days ago. going to put them in on the weekend
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Old 03-12-2004, 12:48 PM   #3
Ken
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Or Lordco. I run NGK coppers.
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Old 03-12-2004, 01:11 PM   #4
Benjamin Tang
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i need to be platnium because of wrx... but that's all i know.

i'm trying to search the forum but i can't even find the part number for the plugs
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Old 03-12-2004, 01:12 PM   #5
tora
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Ask Brian Broz, he told me before where he got his colder plugs but now I forget. It may have been Mopac. Try Lordco too...
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Old 03-12-2004, 02:21 PM   #6
AllWheelDrift
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From the NGK site:
Quote:
First, consult the NGK numbering system page,(listed on the bottom left of the 411 info page), you should be able to see which digits identify the heat range for your spark plug.
EXAMPLE: The heat range for a BCPR6ES-11 is the "6" (ignore the -11, it is the gap)
After you have identified the numbering system for your plug, merely raise or lower that number to change the heat range.
REMEMBER, NGK PLUGS GET COLDER THE HIGHER THE NUMBER, HOTTER THE LOWER THE NUMBER.

Say you are starting with a BKR6E-11
if you want a colder plug, you would use BKR7E-11
if you want a hotter plug, you would use BKR5E-11
(again, on non-racing plugs, the number after the "-" refers to the gap)
NGK lists the BKR6ES as the regular copper plug for a 2002 WRX, so if you wanted to go one cooler in the same style you'd go to a BKR7ES. Once you figure out the one you need you should be able to buy it pretty much anywhere that sells NGK spark plugs.

BTW, you don't need platinum. The main advantage of platinum is they don't need to be replaced as often.
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Old 03-12-2004, 02:36 PM   #7
Benjamin Tang
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i assumed platnium because i'm reading posts about colder coppers getting fried. but they are cheaper than platnium... i don't know which way to go. how hard is it to replace plugs on a wrx?
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Old 03-12-2004, 02:49 PM   #8
AllWheelDrift
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Quote:
Originally posted by Benjamin Tang
i assumed platnium because i'm reading posts about colder coppers getting fried. but they are cheaper than platnium... i don't know which way to go. how hard is it to replace plugs on a wrx?
Hmmm... I'll admit I haven't really been reading much about WRX and coppers. I just know when I had my Audi turbo it really wasn't very happy with Bosch platinums. It seemed to foul them quickly and ran much better on a set of OEM tri-electrode Bosch coppers. I actually came across a lot of post on the quattro list of people with the same results.
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Old 03-12-2004, 02:52 PM   #9
Benjamin Tang
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so... stay away from bosch and stick with ngk...

what little knowledge i have about platnium plugs was what i used to have in my type-r... they were branded spoon but i think they were rebadged nippodenso plugs?
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Old 03-12-2004, 03:09 PM   #10
AllWheelDrift
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I think hypa had problems electrodes falling off of platinum plugs?
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Old 03-12-2004, 03:48 PM   #11
lil_impreza
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anyone know what the spark plug gap is on our cars?
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Old 03-12-2004, 09:39 PM   #12
Necromancer
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Yeah, that's about right.

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RTFM.

Oh, and I second Fried Chicken man's NGK recommendation. They are the OEM plugs and generally get the job done. Weird designs like the SplitFire eventually get shown to be not so great, and I'd rather put the money into changing plugs more often...

The swap itself is dirt easy, like most things on Subarus. Just make sure you have a long enough extension.
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Old 03-12-2004, 10:14 PM   #13
420WRX
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Yeah I don't know much about the dynamics of a spark, but to me electricity takes the path of least resistance and shortest distance to ground. So on a multi-spark plug you would need multiple wires and cores to get a true multi spark..

So I write it off as a hoax and listen to everyone who is happy with NGK..

I have brand new, in the box, a set of 4 NGK BKR6EP-11 plugs, the 'P' stands for platnium. The platinum plugs I have are laser cut and graped to .032 for easy install.

I'd offer em up for sale but you want to find something like BKR7EP-XX plugs; the ones I have are stock temp.
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Old 03-13-2004, 07:28 PM   #14
Necromancer
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Yeah, that's about right.

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I'll take the stock plugs.

What's this business about laser cutting your plugs?
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Old 03-13-2004, 09:42 PM   #15
420WRX
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Ooops I don't have laser cut for sale.. I have laser welded:

Laser welded platinum tip on the center and ground electrode combine to make an extended life performance plug. The fine point platinum center electrode aids in focusing the spark while reducing the voltage necessary for a strong spark.

So my reciept here says they are $18.00 CAN retail, $14.10 (I assume for a 4 pack price) NET, subtotal is $56.40 + $8.18 tax, $64.58 total. They are new, in the box, I asked the guys who sold em to me to set at .032, and then when I took in my car to get the plugs swapped, I asked them to check they were at .032. They checked them but never installed them cause they made a mistake on the service interval for sparkplugs on a WRX and called me in too soon. So I never had them put in and now I have an 04 starting with 15km on the ODO so I don't need these for a long time.

I'd take $50 cash in person, and if I somehow got a really good deal you can't get, I'd ship em to you for $60 (certified cheque, draft, or money order).. Otherwise I'm expecting to pass these on to someone local.
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Old 03-13-2004, 11:44 PM   #16
Necromancer
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Yeah, that's about right.

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Oh, righto, didn't notice you were on the Island. Okeedokey, we'll see then.
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Old 09-20-2004, 11:34 AM   #17
B-Kerr
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Platinums are not for performance cars... period. Platinums are designed to deliver a consistent spark for longer periods of time. What they do not say is that they generally deliver a reduced spark. They are great for 10,ooo mile long interval service family cars, etc. Put em in and don't worry about them till the cars paid for....

However, we want the hot spark. Many shops that build high performance cars swear by stock copper plugs and change them EVERY OIL CHANGE! This is off course on 500+ hp cars, but generally at least once a year, if not more on coppers is your best bet. Also, don't forget to check the gap; yes, they are pre-gapped, but check anyways - mistakes/damage happen.
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Old 09-20-2004, 12:33 PM   #18
steve
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I get my NGK from Lordco.
Benefit? My teg used the same plugs.
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