[hlaughrey]

Hi All,
Need some help here. I have searched and not found any iridian plugs for my 2020 Honda Goldwing touring Dct. Looks like honda changed plugs wihen came out with the 2018 GW. I run iridian plugs in everything that uses spark plugs and have never changed any of them out. I have a 2011 Nissan Xterra with 260000 miles plus and put the iridians in at 40000 miles. Removed a couple at 200000 miles and with a little cleaning looked like near new. My old goldwing 2001 bought it with 11000 miles, got it home and put iridians in and put 152000 miles on it with no plug issues. Help me out here to find some iridian spark plugs for this 2020 goldwing with 5400 miles, so I can replace the stock with iridians and forget about plugs for the next 200000plus miles.
Thank for your help,
Henry

 

[RambozoClown]

Because they don't exist. NGK hasn't made them, yet. Complain to NGK.

 

[AZgl1800]

stick with the NGK plugs that came with the bike,it will run smoother, and longer....
check them at 50k miles if you feel the need to do so

 

[Bike...and Dennis]

Yeah, stick with the stock plugs.
Oh, and welcome to the forum. Where at in Oregon?

 

[DaveO430]

It's iridium , not iridian. Why would you want to change plugs with only 5400 miles? They will easily go 50K.

 

[DenverWinger]

58k miles on the plugs in my '93, I presume they are still the very plugs the bike came with from the factory. A couple years ago when I had some of the tupperware off I unscrewed a couple of them from the engine (one from each side), looked at them, and screwed them right back in. They were just fine! Didn't even bother with the other four......

 

[hlaughrey]

Yeah, stick with the stock plugs.
Oh, and welcome to the forum. Where at in Oregon?

not in Oregon anymore, now live in caldwell, Idaho

 

[hlaughrey]

not in Oregon anymore, now live in caldwell, Idaho

not in Oregon anymore, now live in caldwell, Idaho

when in Oregon I had available a dyno and for giggles I ran my then 2001 gw with the standard plugs and compared it to the iridians wich I was running. There was about 8-10 hp increase with the iridains, not much change in torque, but I could feel the difference between the which plugs were in.

 

[Indianawantsme]

If you don't want to read a book skip this post. LOL Your experiences may be different.

I talked to NGK the other day and the new fangled laser iridiums or any iridium won't go as many miles on newer vehicles as they would on older ones because newer ones run so much leaner. I would have thought they would last longer.
I also run iridiums in everything almost. Price has gone up a lot in the last 2 years though and sucks.

I used to run platinum years ago and was really impressed. Chrysler dealership i worked at years ago got me to try them in our '78 Chrysler Cordoba 400 cu lean burn engine. It fouled out REGULAR plugs within 8k miles for sure and bucked and bucked when you tried to pass someone and then HAD to change the plugs because it never would clear out. Installed the platinum and if it bucked it cleared out and kept going. Don't remember how many miles we got on those plugs but way more than the less than 8k miles. 8 plugs to change all the time was no fun and not passing as fast as possible wasn't good either. I believe i got about 24k miles on them which was worth it totally.

Another one that platinum helped many years ago was our Polaris 250cc 2cycle ATV. It liked to foul plugs since it was a smoker. Youngest son just putted around and the regular plugs did not like that and fouled out. Platinum fixed that problem so made me a "believer" again and only one platinum plug didn't cost that much more than a regular one.
Win win for sure.


When i had an '88 Wing the mpg was all over the place. Changed plugs pretty often since the center rounded off. Plug color was pretty much on the dark side and could tell it ran rich.
It ran on the rich side because the recall had been done for hesitation and it did not hesitate so happy with that.
* I installed platinums and mileage was more consistent and i believe they had 33k miles on them when i sold that Wing. Was definitely worth the extra money for them.
Drive slow and always got above 45mpg. Drive fast on Interstate and sucked the gas above 70mph. It was consistent with the platinums and not like before with regular plugs.


My '03 Kawasaki 650 ATV Prairie V twin was really bad on REGULAR plugs until i put iridiums in and a timing advance module. It didn't want to start very easy until iridiums and the module.
I actually did have an iridium plug go bad 2 weeks ago since installed in 2009. Lots of snow removal during the winter in some of those years and trail riding. Regular plugs would not have survived very long in this machine.
It was set so lean from the factory it was ridiculous so i guess NGK was right.

My '02 Civic had double platinum from the factory. Good for 120k miles(NGK said)
My '12 Civic has laser iridiums from the factory. Good for 100k miles (NGK said) Supposedly better plugs but leaner running engine and they don't last as long.

Wife doesn't open the '12 Civic and hammer down the throttle EVER. At about 35k miles it cut out when i got on it to pass someone.
I opened it up next time i was going slow so it would rpm up and it bucked pretty bad for a little while until it cleaned itself out. It cut out just a little maybe at 65k miles and cleaned out fast. Has about 75k miles on it now and no problem.
REGULAR plugs normally would need to be changed once they get fouled like that. Always been that way for me anyhow.


'12 Wing is a different long story but it has iridiums also. Hesitation problems and Honda not fixing it is pathetic.
After Guhl reflash twice it has just a couple seconds of hesitation. I HAVE to run at least 89 octane now or it pings in elevations below 1000ft. which is where i live. Does not ping a bit on 87 octane above 2500ft and 85 octane in the mountains. Gas mpg and excellent in the higher elevations. With the timing advanced so much by Guhl and the pinging I decided after researching i should go a step colder plugs. I figured the iridiums with their resistance to fouling could handle a step colder with no problem. So far 16k miles on them.

Honda cars get special plugs but the bikes don't.. Hmmmmmmm

It was suggested that people don't put as many miles on bikes as they do on cars so i guess Honda figured regular plugs were good enough.

NGK is just a good quality regular plug that is now in my Gravely with Kohler 21hp. Gravely dealer said to get the Champions out and put NGK in. My small generator and tillers have regular NGK in them also. Not that many hours get put on some of that equipment. If i had any problems i would put iridium in them also.

Just me, but i would never run any plug over 100,000 miles.

Hope you enjoyed the book of my experiences.
.....

 

[hlaughrey]

It's iridium , not iridian. Why would you want to change plugs with only 5400 miles? They will easily go 50K.

Yea , I know. But the orginal company that first made iridians (iridium) just called them iridian in 1970. the company name was iridian and that what they called the plugs. A few years later, I don't remember who was first, but when the original compamy could not keep up, the next company renamed them iridums. I dont remember... denso, ngk, niko, german co., etc.

 

[DaveO430]

They are called iridium because the electrodes are made of iridium.

 

[RambozoClown]

The first Platinum plugs were introduced in 1985 and the first Iridium in 1994.

 

[chriskepone]

not in Oregon anymore, now live in caldwell, Idaho

Nice place Caldwell

 

[luring25]

Hi All, Need some help here. I have searched and not found any iridian plugs for my 2020 Honda Goldwing touring Dct. Looks like honda changed plugs wihen came out with the 2018 GW. I run iridian plugs in everything that uses spark plugs and have never changed any of them out. I have a 2011 Nissan Xterra with 260000 miles plus and put the iridians in at 40000 miles. Removed a couple at 200000 miles and with a little cleaning looked like near new. My old goldwing 2001 bought it with 11000 miles, got it home and put iridians in and put 152000 miles on it with no plug issues. Help me out here to find some iridian spark plugs for this 2020 goldwing with 5400 miles, so I can replace the stock with iridians and forget about plugs for the next 200000plus miles. Thank for your help, Henry

Honda recommends replacing plugs and air filter at 16K . I would stick with factory plugs and what Honda recommends.

 

[luring25]

Honda recommends replacing spark plugs and air filter at 16K . I would use the factory plugs and do them as Honda recommends.

 

[DaveO430]

Honda recommends replacing spark plugs and air filter at 16K . I would use the factory plugs and do them as Honda recommends.

Which is completely ridiculous. The older Honda cars with the standard spark plugs had 30,000 mile intervals for the plugs and air filter, why would the GL1800 be less?

 

[SMEDEN(=the blacksmith)]

Which is completely ridiculous. The older Honda cars with the standard spark plugs had 30,000 mile intervals for the plugs and air filter, why would the GL1800 be less?

Completely correct, and you'd also think they lasted a long time on the motorcycle due to the relatively low revs.

 

[hlaughrey]

stick with the NGK plugs that came with the bike,it will run smoother, and longer....
check them at 50k miles if you feel the need to do so

I like iridium plugs and will continue to search for them. It is a nice felling to put something in one of you machines and never have to worry about replacing them again. Its for the same reason I use K&N air cleaners on all my machines. It is especally true with my 2020 gw touring dct where one has to practically dissemble so much of the bike to change it out. So now if I can find the iridium plugs and the K&N filter in place I dont have to mess with either, except clean the air filter about every 75000 miles. I have usually cleaned the K&N about every 55000 to 60000 on all my vehicles and they still only had a reduction of airflow by about 20 to 30%, which when compared to a new standard filter, I still had close to twice as much airflow in the K&N.
If one goes to a K&N filter you have to be very careful to not over oil the filter or it will mess up intake manifold sensors and you will have to clean them. Everything I have done this to (iridium plugs and K&N filters) has had more power (horsepower and torque), smoother operation. Been doing this seems like forever with to me fantastic results, at least for myself and a few friends who follows doing the same after seeing it work for me.

 

[AZgl1800]

when I see a K&N,
it goes in the trash can

 

[RambozoClown]

There are a few GL1800s with over 500,000 miles on them. So, you may have to change the plugs anyway. 🤡