Thread: Spark plugs!!!

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  1. #1 Spark plugs!!! 
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    I would like to know if it would be worth the extra money to go with iridium spark plugs over copper core spark plugs. I saw a post before I went to go buy some spark plugs that said most people are replacing their spark plugs with copper cores
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  2. #2 Re: Spark plugs!!! 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    If you are stock and don't plan on modding and don't feel like changing spark plugs every 15k miles, you want AC Delco 41-101 Iridium spark plugs, they are by far the best ones for the car.

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  3. #3 Re: Spark plugs!!! 
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    ok cool so i'll stick with the iridium spark plugs. I do plan on modding some but not immediately. For right now I'm doing more with the appearance of the car after I finish the maintenance.
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  4. #4 Re: Spark plugs!!! 
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    thanks for replying also
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  5. #5 Re: Spark plugs!!! 
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    Good Luck with changing those rear plugs. Do a search on this forum on how to make your life eaiser when changing the plugs. If you have alot of miles on the car get a set of plug wires too. Usually when you change the rear plugs you might damage the plug wires. I took the advise on this forum and did the job once, new plugs and wires at 85,000 miles. This will possibly the last set of plugs and wires I will do again on this car. Go with stock acdelco iridium plugs and wires, its usually the best!
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  6. #6 Re: Spark plugs!!! 
    I Write E85 Stickies Frosty's Avatar
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    I changed my stock acdelco iridiums at 150k (When I did my top swap) And they almost looked like they were in better shape then the brand new plugs (104s) I had just bought. They were seriously perfect.
    "Lets just throw more boost at it and see what happens" -Frosty
    The Defacto Guide to tuning your car for E85. Read it and learn.



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  7. #7 Re: Spark plugs!!! 
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    wow at 150k still looked good? thanks for the advice I was just looking down at the rear plugs and they look pretty hard to get to
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  8. #8 Re: Spark plugs!!! 
    GT Level Member GP Guy 07's Avatar
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    I did the the rear plugs by feel and still got the job done,it helps to have long arms.Lol
    07 GP black on black,SPO spoiler,grills,hai,aftermarket rims,Led tails,drilled+slotted rotors
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  9. #9 Re: Spark plugs!!! 
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    lol i was thinking i'll do the same.. gotta use this 6'8 wingspan somehow lol
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  10. #10 Re: Spark plugs!!! 
    GTP Level Member rodguezsciii's Avatar
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    unless you have bananas for finger, the rears take maybe 5 extra minutes....and if you do have those huge dinner plates for hands just ratchet the engine forward, adds maybe 10 mins....


    but like everyone else mentioned invest in new wires, you'll be sure to rip em apart....stockers are perfectly fine efficiency wise, larger wires just make the removal process that much easier....
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  11. #11 Re: Spark plugs!!! 
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    ok i'll get some wires also. I'm almost positive I would rip them lol its going to be my first time changing spark plugs to tell you the truth.
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  12. #12 Re: Spark plugs!!! 
    GTX Level Member Travisgt2's Avatar
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    depending on the year of the car you might not even have to remove the rear o2 sencer to get to the last plug either i didnt need to i have an 04 gt
    04 GT2: 180 t-stat, cold air intake, reptile tune, plog, hv3, gt1 cam, 90#springs, new push rods, new lifters, port polished heads, lim, uim and tb, 06 Impala brakes and steel brake lines. Cosmetic: black roof rails, under glow, Pontiac ground light, blue hud dic radio controls and cluster. To come custom hood.
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  13. #13 Re: Spark plugs!!! 
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    You can get the NKG's a little cheaper then the AC Delco's sometimes. I found out that NKG makes the iridium plugs for AC Delco. If you look on the metal of some plugs it will say NKG. I got the NKG's on sale saves 6 bucks was dollar off per plug
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  14. #14 Re: Spark plugs!!! 
    I live here. SlowNA06's Avatar
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    Delco, NGK, and Autolite make iridium plugs for our motors. I'd grab whichever was on sale, too - all three should perform identically.

    As for O2 sensors, you shouldn't have to remove it for any spark plug job, regardless of 3800.
    Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
    Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
    Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.
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  15. #15 Re: Spark plugs!!! 
    GTP Level Member rodguezsciii's Avatar
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    Quote Originally Posted by Travisgt2 View Post
    depending on the year of the car you might not even have to remove the rear o2 sencer to get to the last plug either i didnt need to i have an 04 gt
    ^^^have never once heard of having to remove an 02 sensor....


    don't let whatever you have heard intimidate you....the job is as simple as pulling boots, and unscrewing plugs, screwing plugs and reapplying boots....just don't forget the proper gap and antiseize....
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  16. #16 Re: Spark plugs!!! 
    GTX Level Member TEK310's Avatar
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    stock engines are .060" huge gap, biggest gap i have ever seen.

    if you delete your evap and egr and get rid of all the unused stuff that goes along with it, rear plugs are easy peazy
    2012 Competition Orange Boss 302 #1769 438rwhp 391rwtq
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  17. #17 Re: Spark plugs!!! 
    Florida Tuner Z34Phoenix's Avatar
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    also headers give you more space to work around too.

    96 Z34 (RIP LQ1 14.81@92.3) L36 Swap 14.9@91.5 www.cardomain.com/id/z34phoenix
    Topswap: P&P All,Si Valves,L76's,LW Pushrods,SD's,DHP PT PB 13.91@99.8
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  18. #18 Re: Spark plugs!!! 
    I Write E85 Stickies Frosty's Avatar
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    Just pop the two front motor mounts offf and rock the motor forward. Takes litterally 5 mins. Gives you enough room to stick your head and arms back there. Makes header installs and spark plugs easy.
    "Lets just throw more boost at it and see what happens" -Frosty
    The Defacto Guide to tuning your car for E85. Read it and learn.



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  19. #19 Re: Spark plugs!!! 
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    cool thanks for all the advice.. I will try to do it by feel first but if that does not work I will most likely remove motor mounts to rock the motor forward like frosty mentioned.
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