Are those the TR55 platinum's?? All the plug types for the GTO start with TR55....
TR55 are copper, TR55IX are irridium.
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2004 Phantom Black M6 - Lovell's Gas Legends struts and rear absorbers. Lovell's Sport drop springs. Lovell's end links and tie rod ends. Hotchkis stabilizers. Pedders Street I and strut top bushes & bearings. Toyo T1R 245/40/17 on stock 17's. Stainless Works Headers w/ Random Tech cats. SLP LM I or Magnaflow cat back depending on mood. SLP UD pulley. Elite Eng Catch Can. Optima Red top. NGK TR 55 w/ MSD wires. GMM ripshifter - street and a K&N (c)AI.
Have 05 with 33k, was thinking about changing also. Any issues with plugs in alum heads. I have heard even if you don't change you should take out every so ofter to avoid plugs seizing up. Should any lube be put on plug when using in alum heads??
Have 05 with 33k, was thinking about changing also. Any issues with plugs in alum heads. I have heard even if you don't change you should take out every so ofter to avoid plugs seizing up. Should any lube be put on plug when using in alum heads??
+1, mine has stock plugs in it for 4 years/3 months. Was thinking of pulling them just to put some never seize on them.
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I have an stock 05 GTO with 31k miles on it. Is it time to change the spark plugs? Car runs fine.
I have a set of ngk TR 55 sitting in my garage.
When did most of yall change out the original spark plugs?
Read and change them after every run, make sure they are properly indexed.
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There he goes. One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die.
Irridium last longer but doesnt conduct electricity as well as copper core. Thats the trade off. That being said, the GTO is so easy to change plugs on that I use the TR55 coppers and change them once a season. Oh, and they are half the price.
Not true. Iridium is way harder than copper. Because of that, the tip can be made way smaller than a conventional plug. This gives a bigger spark.
The iridum plugs of today give performance that only race plugs with short lives could give in the past.Compared to copper, they give longer life and better performance. That is why my iridiums with 18k miles gave more power than a set of new copper plugs.
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Pedder OE springs/Comfort Ride shocks,Lovells strut mounts, Pedder front LCA bush, Super Pro front & rear Radius bush, xmember insert, steering bushing, Hotchkiss sway bars, Bush less front sway bar links, Noltec rear differential bushing,rear LCA bushings, rear shock bushings, Pedder rear sway bar link bushings on bottom, Superpro bushings on top,GMM shifter, JBA shorties/catted mids/X pipe/Pypes bullits/Kooks afterburner mufflers, AD tuned,BFG A/S 245-40-18 tires, lots of sound deadener!
We run Iridium plugs in our Camaro race car for the entire season without a problem.AC Delco #4 in a 502 big block all tricked out.They are the best plug we have run,never foul etc.the Autolite race plugs were a pain.I run stock Iridium plugs in my 04 GTO with a blower without a problem and they have been in the car since new.Changing without a problem is throwing money away that could be used for other issues.
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Magnacharger,Borla cat back,Spec2,Power slots&Hawk pads ,Nitto 555dr,BMR Skid plate,Aeroforce&Autometer and ,404rwhp,414trq.self tuned with EFI
I replaced my plugs at 70,000 miles after two of them had carbon deposits. Since I have after market engine components I check my plugs every oil change. I'm currently using champion 2408's and MSD wire's.
Have 05 with 33k, was thinking about changing also. Any issues with plugs in alum heads. I have heard even if you don't change you should take out every so ofter to avoid plugs seizing up. Should any lube be put on plug when using in alum heads??
When installing your plugs, use a small amount of anti-seize on the plug threads and a dab of di-electric lube inside the plug wire end. Don't overdo it.
Tom.
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<--my SEG!
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Not true. Iridium is way harder than copper. Because of that, the tip can be made way smaller than a conventional plug. This gives a bigger spark.
The iridum plugs of today give performance that only race plugs with short lives could give in the past.Compared to copper, they give longer life and better performance. That is why my iridiums with 18k miles gave more power than a set of new copper plugs.
Im just going by what I learned in engineering classes. I am not going to pretend to know about spark plug engineering or construction or anything. Silver is the most conductive metal there is then copper. Copper conducts 3 times more than iridium and 5 times more than platium. Everything I have ever read is that iridium bridges the gap of conductivity and maintenence.
Im just waiting for the new flux capacitor plugs, they will make your GTO go from 0-85 so quick that you will time travel.
I highly recommend the NGK tr55s to anyone who asks. I used a brand new set of iridium plugs when I did my motor swap and we changed them out mid dynotune because I was getting so much high rpm misfiring it was affecting the tune. When we put the NGks in, it completely solved the problem.
The stock wires arent that bad. I saw more of a bennefit from having correctly gapped plugs than the plug and wire upgrade itself. It isnt too expensive, and something easy enough to do though.
on a setup like my car, i dont have nitrous yet but i will. I run higher compression and am curious as to the plug setup. Im thinking Tr6 plugs gapped to .045
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2004 GTO QSM A4 AKA The Bastard:Iron 6.0, 243s, Valvetrain Work, 11.56scr, LS6 Intake w/ Ported TB, Custom Crank Case Ventilation, UD Pulley, Kooks 1 7/8s, Cut outs, Fuel Mods, Built 4l60e, Custom 3500 converter, Aluminium DS, Drag Bags, Weight Reduction..... A lot!
I have 40K mile on my stock plugs and until performance decrease and mileage decreases, I would leave them alone.
Do you plan on modding the motor? If not, don't touch them.
Wouldn't you want to be pro-active and replace before then?
On my T/A I used to replaced the spark plugs at least once a year. I think that might have been a little too much, but it's better to be safe than sorry.
Are there any vendors here that sell TR55s for less than the local autozoo, o'reileys, etc.??? Not sure how many miles mine have on them, but I would like to change them so I know.
Are there any vendors here that sell TR55s for less than the local autozoo, o'reileys, etc.??? Not sure how many miles mine have on them, but I would like to change them so I know.
I buy mine at the local NAPA, total bill was around $16.
The platinum plugs have been known to have the electrode break off. It's so tiny that it likely would never be noticed. That means a gap that is way too big. It wouldn't surprise me to see a number of plugs on higher mileage cars that are missing portions of the electrodes.
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04 Pontiac GTO
400+ RWHP / 400+ RWTQ of Magnacharged goodness --- Flowmaster cat-back exhaust
Pedders Track II with Hotchkis swaybars --- 06 GTO brakes with stainless lines and Hawk pads
10-speaker, 1200-watt custom sound system
Im just going by what I learned in engineering classes. I am not going to pretend to know about spark plug engineering or construction or anything. Silver is the most conductive metal there is then copper. Copper conducts 3 times more than iridium and 5 times more than platium. Everything I have ever read is that iridium bridges the gap of conductivity and maintenence.
Im just waiting for the new flux capacitor plugs, they will make your GTO go from 0-85 so quick that you will time travel.
not trying to be argumentative, but gold it numero uno when it comes to conductivity, then copper...silver is way down the line as far as metals that conduct well
not trying to be argumentative, but gold it numero uno when it comes to conductivity, then copper...silver is way down the line as far as metals that conduct well
More misinformation!!!!
Silver has the highest electrical conductivity of all metals. In fact, silver defines conductivity - all other metals are compared against it. On a scale of 0 to 100, silver ranks 100, with copper at 97 and gold at 76. Because of this property, and because it doesn't spark easily, silver is commonly used in electrical circuits and contacts. Silver is also utilized in batteries where dependability is mandatory and weight restrictions apply, such as those for portable surgical tools, hearing aids, pacemakers and space travel.
The stock plugs are Platinum, but I am also one of those that doesnt buy into the whole 100,000 mile range on them either.
NGK TR55's are the norm for the LSx series motors. Gap them to .50 and you will be fine, less if you are running boosted application so the boost doesnt put the spark out.
Check again yo. Stock plugs are iridium!
If you are stock, you can easily go 60k before changing them unless you notice a problem before that.
Make sure to use anti seize on the threads and some di-electric grease on the boots.
I would suggest NGK TR55IX iridium plugs available at Advance in stock usually.
Are the TR55s also labeled as V-power? The only ones they had at Advance today were TR5s?? I didn't get them because I wasn't sure if they were the same as the TR55s or not.
Are the TR55s also labeled as V-power? The only ones they had at Advance today were TR5s?? I didn't get them because I wasn't sure if they were the same as the TR55s or not.
It's my understanding the only difference in the TR5s and the TR55s is the gap. The '55s' come gapped wider at ~.055 and the '5s' are at ~.040.
2004 GTO Owner
<--my SEG!
, Drag Pack.
