Iridium spark plugs
Thread Starter
Staging Lane
Joined: Jul 2005
Posts: 58
Likes: 0
Iridium spark plugs I went to my local speed shop yesterday to pick up some stuff for a tune-up. After I told the guy I already had some plugs and that they were iridium, he said that they were trash and that copper works best!!
I told him that the main reason I got the AC Delco Iridiums was that I didn't want to change plugs evey year (plus I found a deal).
He said that "you can't do any high performance stuff with those plugs because the iridium has too high of a resistance".
WTF!?!?!?
I told him that the main reason I got the AC Delco Iridiums was that I didn't want to change plugs evey year (plus I found a deal).
He said that "you can't do any high performance stuff with those plugs because the iridium has too high of a resistance".
WTF!?!?!?
TECH Apprentice
Joined: Dec 2004
Posts: 328
Likes: 0
From: Downers Grove, IL
Iridium does have a higher resistance than copper, but I dunno about the statement of "you can't do any high performance stuff with those plugs because the iridium has too high of a resistance". I think he was just trying to sell you some new plugs. I personally use the copper TR55's because they are cheap!
Banned
Joined: Mar 2007
Posts: 661
Likes: 0
From: Shreveport,Louisiana
Then whats the big deal with platinum & double platinum & even triple throw down platinum plugs not to mention iridium plugs.
If plain ole NGK split plugs are so good why does GM put DENSO made iridium plugs in the Z06 ?
If plain ole NGK split plugs are so good why does GM put DENSO made iridium plugs in the Z06 ?
Trending Topics
TECH Resident
iTrader: (1)
Joined: May 2004
Posts: 848
Likes: 0
From: Tree-Hugging, Bug eating CALI'
It's my understanding platinum and iridium plugs run hotter and will contribute to detonation, especially in FI applications. Because they run hotter they can keep themselves cleaner, thereby lessening the frequency of changing them, but like I said, because they run hotter they tend to preignite the air-fuel charge.
If you're only a bolt-on car, I'm sure you'd be fine. On an FI car, perhaps some TR6s are in order.
If you're only a bolt-on car, I'm sure you'd be fine. On an FI car, perhaps some TR6s are in order.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
Staging Lane
Joined: Jul 2005
Posts: 58
Likes: 0
I there something that can be done (if necessary)with tuning when using these plugs?
If they "make more power" then fine. Even if they didn't, the main reason I use(d) them is for the fact that you don't have to change them as often.
Plus, like you guys say, the ZO6 comes with these "junk" plugs from the factory. I think even my girl came from the factory with the platinum ones.
Whatever.
If they "make more power" then fine. Even if they didn't, the main reason I use(d) them is for the fact that you don't have to change them as often.
Plus, like you guys say, the ZO6 comes with these "junk" plugs from the factory. I think even my girl came from the factory with the platinum ones.
Whatever.
