OEM spark plugs after 58,000 km - Kawasaki Versys Forum
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post #1 of 21 (permalink) Old 03-27-2016, 03:55 PM Thread Starter
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OEM spark plugs after 58,000 km

Here are a few photos of my OEM spark plugs compared with a new plug. The colour is not perfect in these photos, but they were a very nice tan colour. The gap measured within specs in the manual.

Kawasaki manual says to change every 12000 km, but I really do think that is overkill. NGK recommend changes every 60-80 K miles. That is 96.5-128.7K kilometres. Granted that is for cars that run at around half our V's engine rpm, so my mileage is about right for a change.

My V was running just fine and the only reason I changed the plugs was out of curiosity. Use your own judgement as to the change interval, but as a "thrifty" rider, I'd rather spend the money on gas and the time involved to change the plugs on a good ride. And today was definitely a good day to ride, as a buddy who dropped into my garage after a long ride on his Triumph reminded me. Asshat.
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post #2 of 21 (permalink) Old 03-27-2016, 04:06 PM
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i plan to switch to E3 plugs when i change mine those look just fine to me , id keep them as spares, and good write up

yes im a guy.
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post #3 of 21 (permalink) Old 03-27-2016, 04:37 PM
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The 3rd photo shows the wear on ground electrodes quite well. They're visibly rounded and thinned at the ground electrode tip.

Do not try E3 spark plugs! Are you kidding?

Use NGK or Denso only!

Last edited by invader; 03-27-2016 at 04:53 PM.
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post #4 of 21 (permalink) Old 03-27-2016, 04:40 PM
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Quote:
Originally Posted by invader View Post
The 3rd photo shows the wear on ground electrodes quite well. They're visibly rounded and thinned at the ground electrode tip.

Do not try E3 spark spark plugs! Are you kidding?

Use NGK or Denso only!
what dont you like about the E3's?

yes im a guy.
Silvie=latin for. Of the forest /woods. Fox= Vulpine (also my middle name)

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post #5 of 21 (permalink) Old 03-27-2016, 04:47 PM
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what dont you like about the E3's?
They're chinese crap... They melt down, and also tend to cause catastrophic engine damage.

I also believe their connector is not removable to expose a threaded tip to fit in your coils.

Last edited by invader; 03-27-2016 at 04:52 PM.
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post #6 of 21 (permalink) Old 03-27-2016, 04:58 PM
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Good source for NGK CR9EIA-9 spark plugs: NGK 6289 Spark Plug | RockAuto
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post #7 of 21 (permalink) Old 03-27-2016, 05:36 PM
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12,000km change on iridium spark plugs in total BS
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post #8 of 21 (permalink) Old 03-27-2016, 05:49 PM
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Quote:
Originally Posted by Smiley View Post
Here are a few photos of my OEM spark plugs compared with a new plug. The colour is not perfect in these photos, but they were a very nice tan colour. The gap measured within specs in the manual.

Kawasaki manual says to change every 12000 km, but I really do think that is overkill. NGK recommend changes every 60-80 K miles. That is 96.5-128.7K kilometres. Granted that is for cars that run at around half our V's engine rpm, so my mileage is about right for a change.

My V was running just fine and the only reason I changed the plugs was out of curiosity. Use your own judgement as to the change interval, but as a "thrifty" rider, I'd rather spend the money on gas and the time involved to change the plugs on a good ride. And today was definitely a good day to ride, as a buddy who dropped into my garage after a long ride on his Triumph reminded me. Asshat.
I think that might have been a mistake to change them, now the front wheel will never touch the ground
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post #9 of 21 (permalink) Old 03-27-2016, 07:35 PM Thread Starter
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Originally Posted by invader View Post
The 3rd photo shows the wear on ground electrodes quite well. They're visibly rounded and thinned at the ground electrode tip.
In all the photos perspective is a difficult problem. The plugs all had to lie on a flat spot of their individual hex, and taken with a macro setting for the lens at a fairly wide angle, perspective can be deceptive. Look where the outside electrode points to and realize that they are not studio controlled scientific photographs. Wide angle lenses do tend to distort

Regardless, I measured the gaps of the used plugs and, as I said before, all gaps were within spec. Not pretty cosmetically but they were doing their job just fine and I see no need to change spark plugs at the Kawasaki recommended rate of every 12000 km.

Your bike, your choice.
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post #10 of 21 (permalink) Old 03-27-2016, 08:14 PM
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I'm currently using Denso's excellent Iridium Power IU27 spark plugs.

DENSO SPARK PLUGS - Basic Knowledge

Denso 5363 Iridium Spark Plug IU27 | eBay

Last edited by invader; 03-27-2016 at 08:25 PM.
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post #11 of 21 (permalink) Old 03-27-2016, 08:31 PM
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I'm currently using Denso's excellent Iridium Power IU27 spark plugs.

DENSO SPARK PLUGS - Basic Knowledge

Denso 5363 Iridium Spark Plug IU27 | eBay
I just ordered a pair. Changing plugs before 1500 miles?
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post #12 of 21 (permalink) Old 03-27-2016, 08:49 PM
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I just ordered a pair. Changing plugs before 1500 miles?
Why 1500 miles? You mean 15,000 miles?
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post #13 of 21 (permalink) Old 03-28-2016, 12:57 AM
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Only 1500 miles on a 2015. I am enjoying taking the bike apart and putting it back together a little better. Seems like a good excuse to get the gas tank off. Am I nuts? I think I will be a little happier just knowing I have invader recommended plugs. And I'll probably also rip out my perfectly good regulator once onewizard shows the way.

Last edited by IAMRA; 03-28-2016 at 01:01 AM.
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post #14 of 21 (permalink) Old 03-28-2016, 01:18 AM
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Only 1500 miles on a 2015. I am enjoying taking the bike apart and putting it back together a little better. Seems like a good excuse to get the gas tank off. Am I nuts? I think I will be a little happier just knowing I have invader recommended plugs. And I'll probably also rip out my perfectly good regulator once onewizard shows the way.
I also recommend the NGK's you already have in there...
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post #15 of 21 (permalink) Old 03-28-2016, 11:16 AM
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Thanks. I'll try to hold myself back for another 6000 miles.
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post #16 of 21 (permalink) Old 03-28-2016, 06:30 PM
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I'm at 56000kms and still on the OEM plugs, I'll replace them at 60K.
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post #17 of 21 (permalink) Old 03-29-2016, 01:28 PM
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I'm w/ invader on the wear on your ground electrode, and it's NOT the angle of the camera. Compare the two outside plugs w/ the new, shiny one in the center.

Yes - you can run them longer than the recommended interval, but I'm pretty sure your performance deteriorated somewhat.

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post #18 of 21 (permalink) Old 03-29-2016, 01:40 PM Thread Starter
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Yes - you can run them longer than the recommended interval, but I'm pretty sure your performance deteriorated somewhat.
I'll let the other V riders that I have run with decide that. See post #8 in this thread.

Last edited by Smiley; 03-29-2016 at 01:42 PM.
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post #19 of 21 (permalink) Old 03-29-2016, 09:02 PM
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My Versys is getting great MPGs this spring; even better than it did 2 years ago when it rolled off the dealership.

The XT660R I had called for plugs every 20,000kms; regular sparkplugs. Sure, it's a thumper and revs lower than the Versys, but that's 20K vs 12K on regular vs. Iridium. The only time it almost left me stranded was after the 20K kms service, when I replaced the plug for the first time. I still had the old plug, cleaned and gapped it and I rode the bike with that plug for another 20,000km with no problems.

I'll post pictures of mine when I get to do the 60,000 km service.
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post #20 of 21 (permalink) Old 07-16-2017, 10:35 AM
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The only plugs that I can find that are similar to the OEM NKG CR9EIA-9 plugs are the Denso IU27. There are other similar sized plugs but they have a more extended tip which probably means they will not work in the Versys. Denso also make an very expensive racing version of the IU27 plug that has a platinum electrode and is more heat resistant.

Just ordered a set of NKG's, the OEM Iradium tipped plug although they are slightly more pricey than the Denso's they are also easier to find.

I think the 2010 service manual must contain a misprint as it specifies replace the plugs every 12,000km/7500 miles. Probably what it meant to say is check them at this interval as you will likely have to take your tank off to clean the air filter at the same time anyway. NKG says they should last much, much longer although probably only 1/2 to a 1/3 of car plugs due to the much higher operating RPM.
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