I'm sure this subject has been beaten to death....So,lets beat it some more!
Whats everyones opinion on spark plugs? are Iridiums really worth it for a N/A 98 2.4l with intake only?
Its time for a plug change and am looking for input from you guys on what you guys are running and have the most faith in as long as they are NOT PLATINUM!
My last plug change i used Rapid Fires and found them to be SO-SO.
Thanks in advance
Wifes ride..1998 Sunfire Gt with ractive intake and stb
Energy suspension fromt sway bar link bushings
ASA LS7 wheels with Kumho 225x45x17 711 tires.
My ride...1995 315hp lincoln mark viii lots of goodies
Iridiums are nice plugs and others have agreed, other than stock plugs, Iridiums are the next best thing for all motor.
www.kronosperformance.com / 732-742-8837
i used iridiums in my 99 2.2 OHV and they did fine. havent changed the plugs in my Eco yet...but its getting due so i may give them a shot again.
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plug to plug you arent gonna see much gain.... small notices of efficiency.....thats it.
worth is up to the individual. everyone has different goals... learn or know yours then you tell US was it worth it to you. something thats worth it for me, prob isnt gonna be worth it for everyone who runs quarter mile style only.
i;ve ran gimmick extra pronged BS plugs like plus 2 3 4;s etc blah etc.... not as efficient, but its like every other gimmick... over time, efficiency is lost.
single prong is all you need, densos i;ve ran since 70 some thousand miles....
regap once a season and you should be more than fine.
There actually IS a purpose to multi prong plugs, if there weren't, aircraft engines wouldn't use them(Mostly 2 or 3, but 4 prong are sometimes used).
I do agree though, I have also used platinum 4's, and personally I found them to be worse than the AC platinums that came with the car, even with 90,000 km's on them.
"i promise we won't get drunk, and go out in boat in the dark, stand up in the boat and fire the gun into the air unless we have life jackets on."
i have been running autolite XPs you should see about those they are Iridium enhanced plugs. ive been running for about a month in my ecotec with no problems.
craig steele wrote:There actually IS a purpose to multi prong plugs, if there weren't, aircraft engines wouldn't use them(Mostly 2 or 3, but 4 prong are sometimes used).
I do agree though, I have also used platinum 4's, and personally I found them to be worse than the AC platinums that came with the car, even with 90,000 km's on them.
thas cool, but the only thing is, our cars arent aircraft engines
, nor go through the stress they go through, or the extended service interavals either.
the reason they are being pushed for cars is that, once the distance between one prong wears down, it will automatically find the next shortest distance between prongs....
so if you have 4 prongs, when prong one exhibits wear between the electrode and itself, then the electricity will now travel from prong 2, 3, or 4 until that wears out, then to the remaining 2.
electricity always takes the shortest path.
theres no real accurate way to gap those types of plugs, and also the combustion is hampered quite a bit from all the extra prongs.
james wrote:i have been running autolite XPs you should see about those they are Iridium enhanced plugs. ive been running for about a month in my ecotec with no problems.
iridium enhanced....
dont get me wrong, if it runs then cool.... but i think autolite basically put some iridium on the plug just to use the term "iridium" to sell it... decreased the size of their electrode a bit as well....
from a quality plug site....
Quote:
Iridium
Iridium is a precious metal that is 6 times harder and 8 times stronger than platinum, it has a 1,200=F higher melting point than platinum and conducts electricity better. This makes it possible to create the finest wire center electrode ever. Prior till now, spark plug manufacturers have favored platinum for their long life or performance spark plugs due to its high melting point, also the technology did not exist to machine and bond iridium on a spark plug electrode (at least in a cost effective manner). Champion spark plugs have produced iridium industrial and aviation spark plugs since the 1960's, but they still sell for over a hundred dollars per plug. Just now is the technology cost effective to use iridium in a spark plug for automotive applications. The strength, hardness and high melting point of iridium make it very well suited for a fine wire plug. The primary iridium plug manufacturers at this time are Denso with a 0.4mm center electrode, while Champion and NGK have 0.7mm center electrodes. These are the best performance plugs on the market for traditional automotive use and many racing applications. Autolite has introduced an iridium-enhanced plug (the iridium content is too low to call it an iridium plug) we do not consider this in the same class as Denso, NGK or Champion.
SIDENOTE: Thus far the tech's we have spoken with report no problems using iridium plugs with Nitrous.
http://www.sparkplugs.com/more_info.asp?pid=20510
its like basically most the stuff is platinum, but has a really thin iridium covering internally.
What you're saying does make sense, becaue aircraft seem to prefer 2 prong(at least they're more common).
Plus, like I said, I've used 4 prong plugs. They suck.
"i promise we won't get drunk, and go out in boat in the dark, stand up in the boat and fire the gun into the air unless we have life jackets on."
i have the iridiums and once i put them in my car ran a lot smoother. i think they'd be a good choice
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