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opinion on iridium plugs

  • Thread starter Thread starter Biker326
  • Start date Start date
Closed mindedness with get you no where in racing:-D I will attempt to explain why you can gain that much.Blowers,turbos,N20 has a tendency to blow out the spark at high levels of boost or shot of the giggle gas at high rpms. Iridium is great for igniting even in these conditions. Hence the 30hp gain. I have witnessed many dyno sessions I assure you this was not a fluke. As stated on an average ride or small boost apps you will likely not see any gain.The potential was already there it was just not utilized as the standard spark plug was a weak link.
 
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Having run iridiums on my 850, I have some testimony.


Theres not really any performance change. However, the last set I had were fine after 20000km. I dont know why I changed them. I just got the br8es now, cuz theyre cheap. still fine after 10000.



POOT
 
I should add there is a down side to iridium plugs used in racing applications. The small tip is proned to getting very hot(no heat dissipation) and causing pre-igintion(tip burning away as a result think plasma cutter:cry: ). While copper plugs have a much larger electrode and not prone to this. Racers change,check thier plugs more than they change thier underwear so not big problem.:-D
 
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Zook850GS said:
Closed mindedness with get you no where in racing:-D I will attempt to explain why you can gain that much.Blowers,turbos,N20 has a tendency to blow out the spark at high levels of boost or shot of the giggle gas at high rpms. Iridium is great for igniting even in these conditions. Hence the 30hp gain. I have witnessed many dyno sessions I assure you this was not a fluke. As stated on an average ride or small boost apps you will likely not see any gain.The potential was already there it was just not utilized as the standard spark plug was a weak link.
Click to expand...


OK, if you want to get serious and race technical, the focus on this thread was bling sparkplug performance on your average, well used STREET engine. Far too many gullible individuals try to emmulate the succeses of race only engines to their own street engines as far as "performance". I can tell you working in the powersports industry for about 10 years, its FAR easier for a novice performance enthuisist to LOOSE 5 hp, than it is for that individual to gain 5 hp by screwing around with their engine with performance gimmicks. I am sure you know the old saying "a combustion engine is simply an air pump" "The more air in, more air needs to be let out". Good performance gains will never be had (on a street engine) by just changing a sparkplug....
 
Hi folks, Been using the NGK Iridiums for the last 3k miles. Don't know if they increase power or if they are part of the reason my bike is running very well or not. Mine cost around $2.75 each at Advance Auto Parts. I don't have any complaints about them. Ray
 
Road_Clam said:
OK, if you want to get serious and race technical, the focus on this thread was bling sparkplug performance on your average, well used STREET engine. Far too many gullible individuals try to emmulate the succeses of race only engines to their own street engines as far as "performance". I can tell you working in the powersports industry for about 10 years, its FAR easier for a novice performance enthuisist to LOOSE 5 hp, than it is for that individual to gain 5 hp by screwing around with their engine with performance gimmicks. I am sure you know the old saying "a combustion engine is simply an air pump" "The more air in, more air needs to be let out". Good performance gains will never be had (on a street engine) by just changing a sparkplug....
Click to expand...

Agreed!!!\\:D/
 
I have 20 years and 240K miles on five GS shaft bikes, four 850's and now an 1100. All on plain NGK B8ES plugs, the recommended item, changed just once a year.

If your basically stock GS street bike won't run perfectly on these, your problem lies somewhere else. Anything else is a total waste of money.
 
retchidxs said:
i got a friend that wears a bracelet with a magnet and copper wire its supposed to keep space aliens away. i dont think it works.
Click to expand...

Why do you think it does not work ????
Have hi seen any aliens after starting wearing the bracelet????
 
There is a new spark plug out there called "firestorm" by a guy named Krupa. He makes some impressive claims . I tried to duplicate his idea albeit crudely. I got some startling results. I think he has something. Now for the disclaimer; He was the sales part of "splitfire plugs" so take what he says with this in mind.
 
Road_Clam said:
I can tell you working in the powersports industry for about 10 years, its FAR easier for a novice performance enthuisist to LOOSE 5 hp, than it is for that individual to gain 5 hp by screwing around with their engine with performance gimmicks.
Click to expand...

You make a good point!


I will attempt to explain why you can gain that much.Blowers,turbos,N20 has a tendency to blow out the spark at high levels of boost or shot of the giggle gas at high rpms. Iridium is great for igniting even in these conditions.
Click to expand...

MSD
 
ngk plugs

ngk plugs

I am also A snowmobiler and I ran the irridium plugs last year in My ZR800 2 stroke motor.I ran almost 1200 miles without changing plugs this is A rarity in snowmobiling I did not see A significant increase in power but at 2.00 A pop for 16 or so regular plugs A season I will gladly buy another pair of irridiums




Rich


3Katsinthegarage
1982 GS1000SZ Katana
1982 GS550MZ Katana
2002 ZR800CCE Arctic Cat
 
Biker326 said:
Hi all,

I just ordered some iridium spark plugs for my '80 GS1000E. The ad for them made it sound like they were the equivalent of rocketfuel... I was more interested in their dependable performance record. What is the opinion pool of this forum on iridium plugs? worth the extra $'s? Hype?
I'll stick them in this weekend when they arrive (hopefully). Thanks!
Click to expand...
I used to own a V4 suzi Madura 1200. On the Madura forum the iridium thread went on for weeks. Maduras are set rich from the factory. Many of us tried the DR8EIX NGKs iridium. The majority of users found easier and quicker starts, no more fouling and longer plug life. Some claimed better mileage but those seemed to be the ones who had the most fouling(rich condition) From the feedback I kind of deduced that Iridiums work even in poor conditions and they are tougher than most plugs.
Years ago I had a chat with an automotive engineer who still builds winning cars in SCCA GT3 and GT4. (He has his own engine dyno room) His advice was "get it running right and use a lot of copper plugs". They conduct electricity much much better than platinum and almost as well as silver. Sparks use one path and one path only. Sparks are easily generated if there is a real sharp edge or point. That is why splits and grooves work. There are a lot of sharp edges. They don't make two sparks but do provide a lot of sharp edges.
Conductivity is also important. Four metals are common in plug construction. Gold, silver, platinum, and copper. The best is silver, very close second is copper a distant third and fourth is gold and then platinum. Platinum is great for longevity and is great if coil output is high. Gold is just a poor choice because it doesn't last long and conducts poorly and plugs are very expensive. Silver doesn't last well is extremely expensive but conducts the best. Copper is the hands down winner as it conducts very well is inexpensive and lasts reasonably well. The advice I recieved from my friend was change them every 8000 miles.

I have no idea how iridium stacks up in the conductivity dept but they worked great on my Madura and lasted a long time. 13,000 mi and still looked sharp and relatively clean. I used to foul coppers in 2000 mi.

Herman
 
I have only used NGK plugs on my bikes, but I would be curious to know if the iridium plugs work. (Maybe I can drop one in a KGB agent's soup.)
 
A raceboat buddy of mine sent me a set of NGK DR8EIX Iridium plugs (We use NGK 1ZFR5G Laser Iridium plugs in the Mercury Opti-Max outboard on the race-boat). I put the DR8EIX on last week, they work fine and so do the original NGK D8EA plugs. I can feel/see/measure no difference in in performance given my usage of the bike with the Iridium plugs. So, at this point, they're on strictly for braggin-rights.:-D
 
Well if any of you guys have a Ford Triton engine in your car or truck you know why we use platinum plugs. It's a real pain to change plugs like 2 hours and I see why they recommend replacement at every 100K.

Now on a GS it's a piece of cake to do and 5 mins later your done. I've use NGK's since the 70's in all my bikes without any problems and always have new ones laying around just in case. Even run them in my SeaDoo's. Don't expected a plug to fix a rich/lean problem, new plugs will be a bandaid for so long until you fix the real problem or need new plugs again.
 
i'm going to stick with NGKs. however, that has nothing to do with plug life or performance gains. it has to do with crackheads trying to steal my plugs. can you imagine how much more they'd want them if they said 'iridium' on the plug? or 'platinum?' 8-[
 
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