# Which spark plug do you use? **URL:** \ **Category:** PittSpeed Off Topic\ **Created:** [May 5, 2004, 6:02am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200 "2004-05-05T06:02:06Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![1320](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/1320/32/5949_2.png) [@1320](https://forums.speedlife.net/u/1320)\ **Post date:** [May 5, 2004, 6:02am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/1 "2004-05-05T06:02:06Z")
There were big debates of this over at [freshalloy.com](http://freshalloy.com)… They say copper makes more power but doesnt last long. Platium lasts long but doesnt make the power. Iridium lasts long and makes power but is expensive as hell. So what type do you run? I just ordered NGK Iridiums ---
**Author:** ![flyinglow57](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/flyinglow57/32/5978_2.png) [@flyinglow57](https://forums.speedlife.net/u/flyinglow57)\ **Post date:** [May 5, 2004, 6:03am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/2 "2004-05-05T06:03:32Z")
which one is the cheapest NGK that is 1.99 a piece im guessin copper? ---
**Author:** ![1320](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/1320/32/5949_2.png) [@1320](https://forums.speedlife.net/u/1320)\ **Post date:** [May 5, 2004, 6:08am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/3 "2004-05-05T06:08:17Z")
> [@flyinglow57](#): > > which one is the cheapest NGK that is 1.99 a piece im guessin copper? Yea, coppers are the cheap ones. Iridiums are around $10 bucks a piece. ---
**Author:** ![fshowcars](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fshowcars/32/5937_2.png) [@fshowcars](https://forums.speedlife.net/u/fshowcars)\ **Post date:** [May 5, 2004, 6:11am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/4 "2004-05-05T06:11:28Z")
i run iridiums… they come stock in teh vw ---
**Author:** ![imported\_gearhead](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/imported_gearhead/32/5957_2.png) [@imported\_gearhead](https://forums.speedlife.net/u/imported_gearhead)\ **Post date:** [May 5, 2004, 6:56am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/5 "2004-05-05T06:56:37Z")
denso iridiums here the ngk iridiums are only $6 a piece, denso’s are $10 ---
**Author:** ![imported\_showtime](https://avatars.discourse-cdn.com/v4/letter/i/51bf81/32.png) [@imported\_showtime](https://forums.speedlife.net/u/imported_showtime)\ **Post date:** [May 5, 2004, 8:54am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/6 "2004-05-05T08:54:18Z")
> [@gearhead](#): > > denso iridiums here x2 ---
**Author:** ![ShalerPunk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shalerpunk/32/5976_2.png) [@ShalerPunk](https://forums.speedlife.net/u/ShalerPunk)\ **Post date:** [May 5, 2004, 9:33am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/7 "2004-05-05T09:33:46Z")
Bosch Platinums because they’re cheap and I drive a Prizm… ---
**Author:** ![BETRAYED93](https://avatars.discourse-cdn.com/v4/letter/b/ed8c4c/32.png) [@BETRAYED93](https://forums.speedlife.net/u/BETRAYED93)\ **Post date:** [May 5, 2004, 9:46am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/8 "2004-05-05T09:46:42Z")
i got ngk r’s i bought new and planned on using them till i notice my fe3’ motor had iridiums in it! so who knows which i ll use ---
**Author:** ![ZackG](https://avatars.discourse-cdn.com/v4/letter/z/ce7236/32.png) [@ZackG](https://forums.speedlife.net/u/ZackG)\ **Post date:** [May 5, 2004, 7:16pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/9 "2004-05-05T19:16:03Z")
awsfa-12c motorcraft plugs… $1.67 from my club dealer ---
**Author:** ![PinfieldRX7](https://avatars.discourse-cdn.com/v4/letter/p/f19dbf/32.png) [@PinfieldRX7](https://forums.speedlife.net/u/PinfieldRX7)\ **Post date:** [May 5, 2004, 7:20pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/10 "2004-05-05T19:20:31Z")
> [@unicorn](#): > > Yea, coppers are the cheap ones. Iridiums are around $10 bucks a piece. hehehe ever price iridiums for a RX7? try 35 a piece platinums are around 15 i think ill stick to my coppers that get me 5K miles out of a set ---
**Author:** ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy)\ **Post date:** [May 5, 2004, 7:20pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/11 "2004-05-05T19:20:33Z")
Bosch Platinum +4 $3.99 and garunteed for 100K miles 🙂 I do however trade them in once a year and get new ones for free… these plugs love the upper RpMs :itr41: ---
**Author:** ![GNocide](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gnocide/32/5947_2.png) [@GNocide](https://forums.speedlife.net/u/GNocide)\ **Post date:** [May 5, 2004, 8:03pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/12 "2004-05-05T20:03:55Z")
no secret to plugs unless you use race gass. lead eats platinuim plugs ,copper will last longer with race gas.no one has ever dynoed more hp in 99 cent plugs to $35 ones. its what your car likes and personal preference. btw plat+2s in the gtp ac commercial grade in the ty ac reg in the buick stock plats in the z28 ---
**Author:** ![OnTheRun710](https://avatars.discourse-cdn.com/v4/letter/o/5fc32e/32.png) [@OnTheRun710](https://forums.speedlife.net/u/OnTheRun710)\ **Post date:** [May 5, 2004, 8:13pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/13 "2004-05-05T20:13:14Z")
used bosch +4 and have +2 in now… didn’t notice a difference probably going to denso iridium next change ---
**Author:** ![slowcamaro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/slowcamaro/32/5975_2.png) [@slowcamaro](https://forums.speedlife.net/u/slowcamaro)\ **Post date:** [May 5, 2004, 8:14pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/14 "2004-05-05T20:14:25Z")
AC delco… ---
**Author:** ![OnTheRun710](https://avatars.discourse-cdn.com/v4/letter/o/5fc32e/32.png) [@OnTheRun710](https://forums.speedlife.net/u/OnTheRun710)\ **Post date:** [May 5, 2004, 8:19pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/15 "2004-05-05T20:19:46Z")
> [@slowcamaro](#): > > AC delco… AC delco… what? platinum, copper, iridium? ---
**Author:** ![slowcamaro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/slowcamaro/32/5975_2.png) [@slowcamaro](https://forums.speedlife.net/u/slowcamaro)\ **Post date:** [May 5, 2004, 8:20pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/16 "2004-05-05T20:20:39Z")
copper ---
**Author:** ![Devo](https://avatars.discourse-cdn.com/v4/letter/d/f04885/32.png) [@Devo](https://forums.speedlife.net/u/Devo)\ **Post date:** [July 29, 2004, 8:40am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/17 "2004-07-29T08:40:02Z")
Iridium - Denso IK-20’s - around 10 bux a piece ---
**Author:** ![silvrhand](https://avatars.discourse-cdn.com/v4/letter/s/cc9497/32.png) [@silvrhand](https://forums.speedlife.net/u/silvrhand)\ **Post date:** [July 29, 2004, 8:45am UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/18 "2004-07-29T08:45:30Z")
On a metal note: Copper is more than likely to retain the heat and sometimes cause issues with detonation, there was a huge fight on this on [twinturbo.net](http://twinturbo.net). I think at one point someone rigged up something to test them and the copper plug was hotter by like 15 degrees at the tip. > [@unicorn](#): > > There were big debates of this over at [freshalloy.com](http://freshalloy.com)… They say copper makes more power but doesnt last long. Platium lasts long but doesnt make the power. Iridium lasts long and makes power but is expensive as hell. So what type do you run? > > I just ordered NGK Iridiums ---
**Author:** ![snowhitejolf95](https://avatars.discourse-cdn.com/v4/letter/s/e19b73/32.png) [@snowhitejolf95](https://forums.speedlife.net/u/snowhitejolf95)\ **Post date:** [July 29, 2004, 3:16pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/19 "2004-07-29T15:16:59Z")
bosh plat + 4s ---
**Author:** ![VictorSmalls](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/victorsmalls/32/5944_2.png) [@VictorSmalls](https://forums.speedlife.net/u/VictorSmalls)\ **Post date:** [July 29, 2004, 3:27pm UTC](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200/20 "2004-07-29T15:27:11Z")
NGK’s [Next page](https://forums.speedlife.net/t/which-spark-plug-do-you-use/166200.md?page=2)