Hi V Bikers,

The V OEM plug is NGK CR9EIA-9 (only one listed in manual)

Having seen that spark plug stick coil is made by Denso, being using Denso plugs. The plug listed was IU27.

However this plug change, being the guinea pig I would like to be, I trying the Denso IU27A. See the IU and IU-A spec difference below:

http://www.globaldenso.com/en/products/aftermarket/plug/power/lineup.html

Basically, the same plug with a slanted ground eletrode.

Have been about 1000 kilos now and IMO, It revs and starts easier...

Thanks and Ride Fast and Safe.:)

Denso's IU27 is already being tried: http://www.kawasakiversys.com/forums/showthread.php?t=2571

IU27A's slant cut electrode results in a spark position of 1.0 mm compared to IU27's 0.7 mm, and a spark electrode height of 2.9 mm instead of 2.6 mm. http://www.globaldenso.com/PLUG/power/spec.html
IU27D, or IU27 (with removeable nut on threaded connector) are the taper cut ground electrode plugs listed for NGK's CR9EIA-9, but you should be alright.

Denso's Iridium Racing IU01-27 is interesting too with its all-platinum slanted ground electrode. Ground electrode projection is -1.8 mm instead of -0.5 mm, with -0.3 mm spark position and 1.2 mm spark electrode height.
http://www.globaldenso.com/PLUG/racing/spec.html
http://www.globaldenso.com/PLUG/racing/features.html

Thank you, Invader.

This is the 2nd time you helped me with some alternative choices.
Pardon my inexperience with Jap bikes, this is my first one.
Riding BM boxers since 17. No regrets but JOY since getting the V.

(They are actually both the same length... Just look at the ground electrode at bottom of pic.)

IU27D:
http://hotimg25.fotki.com/a/66_186/75_40/IU27D329.jpg (http://hotimg25.fotki.com/p/a/66_186/75_40/IU27D329.jpg) IU27A: http://hotimg25.fotki.com/a/66_186/75_40/IU27A.jpg (http://hotimg25.fotki.com/p/a/66_186/75_40/IU27A.jpg)

Thanks again.

Ride Fast and Safe.

I see the IU27D has a longer thread length than the IU27A. How does this compare to the OEM plug? I wouldn't want to put in a plug that is too long or to short.

Denso's IU27 is already being tried: http://www.kawasakiversys.com/forums/showthread.php?t=2571

IU27A's slant cut electrode results in a spark position of 1.0 mm compared to IU27's 0.7 mm, and a spark electrode height of 2.9 mm instead of 2.6 mm. http://www.globaldenso.com/PLUG/power/spec.html
IU27, or IU27D (with removeable nut on threaded connector) are the taper cut ground electrode plugs listed for NGK's CR9EIA-9, but you should be alright.

Denso's Iridium Racing IU01-27 is interesting too with its all-platinum slanted ground electrode. Ground electrode projection is -1.8 mm instead of -0.5 mm, with -0.3 mm spark position and 1.2 mm spark electrode height.
http://www.globaldenso.com/PLUG/racing/spec.html
http://www.globaldenso.com/PLUG/racing/features.html

As Invader had pointed out, I realised there is a small spark eletrode height difference (0.3mm). Hence, I will be changing my plugs ASAP as have the IU27 in stock here at home.

What I would also do is clarify this issue with the my Denso dealer as he recommended the IU27A. However, I is my fault not to double check:thumbdown:.

If I have caused any confusion:confused: in the V world, sorry for this:(

Ride Fast and Safe.

So the Denso OEM replacement plug would be the IU27, no (A) no (D) Correct?

Also, what would be the average price differnce? and can it be purchased at a regular automotive store?

Hi Nortasaki,

I am 100% sure A-OK for the IU27 5363.
I am unsure of the IU27D as not seen it before.
Maybe possible the IU27D is not sold here in Malaysia (Lat 3 08 N long 101 42 E)
2 items to find out from my Denso dealer.

Not able to help you on the price and availabity part.

V Guys,

I just read again an email I wrote to Denso Japan on the V.

fromWEBMASTER@notes.denso.co.jp
toXXXXXX@gmail.com

date5 December 2008 14:43
subjectPlugs for Kawasaki Versys
mailed-bynotes.denso.co.jp

hide details 05/12/2008 Reply


Dear Sir.
Kawasaki Versys 650cc, 2cylinders.
We suggest IU27 Iridium Power ofr your nice Kawasaki.
IU27 dimensions are 10mm thread diamter, 19mm thread lenghth,16mm Hex.
IU27 ha world smallest 0.4mm Iridium alloy center electrode wich enhances your MC
power,acceleration.
As IU27 has golden terminal nut on top. please remove it by hand when istallation.
If IU27 is hard to find, IU27A is also applicable.
We attach IU27 picture ofr your reference.

(See attached file: IU.jpg)


Hope this clears the air, Best Regards.

I see the IU27D has a longer thread length than the IU27A. How does this compare to the OEM plug? I wouldn't want to put in a plug that is too long or to short.

Like I mentioned above the pics, they are both the same length. Pics are there to show the difference between taper cut, and slanted ground electrode.

IU27D and IU27 are Denso's recommended replacements for NGK's CR9EIA9. They are both the same spark plug; IU27 has the removable terminal nut on the threaded connector, while IU27D doesn't. http://www.globaldenso.com/PLUG/cross_reference/1037_08.html

IU27D is a factory installed plug on some motorcycles that don't need the nut on threaded connector. (as with the Versys.)
For a Yamaha YZFR-1 (bottom of page): http://www.globaldenso.com/en/products/aftermarket/plug/config/index.html
Suzuki Hayabusa and B-King 1340: http://www.globaldenso.com/PLUG/topics/2007/10_1.html

-"Suzuki Genuine P/N for IU27D is 09482-00557... For aftermarket, IU27 can be used instead of IU27D."
You won't neccessarily get a Denso IU27D if you order a plug from Yamaha for a YZFR-01 (R1) though, and maybe even Suzuki's part # 09482-00557, as NGK's is a more available substitute.

IU27 and IU27A are easier to find than IU27D.
http://motors.shop.ebay.com/_Car-Truck-Parts-Accessories__denso-iu27_W0QQ_fromfsbZQQ_fxdZ1QQ_trksidZm270Q2el1313

Just found another alternative plug for V by Autolite.

http://www.power-21.com/AutolitePower21i/RelatedInfo.aspx?b=A&f=Autolite/Motorcycles.pdf. See Kawasaki under 650cc

http://www.power-21.com/AutolitePower21i/PartDetail.aspx?b=A&pn=XS4302DP

Ride Fast and Safe.

Yeah I checked those Autolite's too, but they an inferior Chinese product. Even NGK's are better.

Copy on that. Thanks for sharing, Invader.

I did a search on this forum but nothing came out for NGK CR9EIX, it should fit on the V
but I am not sure if that's a good alternative for V's spark plug. Any advice?
Thanks!

I had a very subtle increase in throttle snap on the BMW's when I switched to the Denso Iridium- I think I will fool with some of these suggestions when mine is due for a plug change. But given their condition at the last check, that will be 2012...

Saw this spark plug on http://www.e3sparkplugs.com/pdf/powersport_catalog.pdf. See
Versys KLE650A; 650CC (2008) ..............................Model E3.38 gap .036

Any input on this plug? Based in the USA.

Thanks.

E3 spark plugs are low quality non-iridium, and made in China... Not recommended.

Make sure you use anti-seize on the threads. I've read horror stories of plated plugs welding themselves in their holes if left a long time.:eek: Although these were in automobiles.

NGK and Denso spark plugs are manufactured with special shell plating on the metal body. Anti-seize compound may cause over-torquing and is not recommended. The M10x1 (10 mm) thread plugs should be torqued to 11 ft-lbs.

NGK Technical Bulletin: http://www.ngkplugpro.ca/content/contentfiles/pdf/NGKSP-0907-1R-Anti-SeizeonSparkPlugs.pdf

Tightening info: http://www.ngk-sparkplugs.jp/english/techinfo/qa/q18/index.html

Many people are finding out the hard way when they finally change their plugs after 100,000 miles that they are stuck due to the platinum plating. There is a method of working them out but it's a one shot deal.

Invader and Blipco, :thanx: for sharing.
So far the Denso plug has worked fine on mine and my brother's V.
Change them every 7500 miles or 12,000 km.

:cheers:

I've seen some amount of oxidation with Bosch spark plugs in aluminum heads, but never with NGK or Denso, even at over 100000 miles. If you use high-temperature anti-seize lubricant/compound, apply sparingly to second and third threads, and be aware that less tightening torque is needed due to reduced friction on the threads.

Loctite stick:
http://www.ryderfleetproducts.com/cgi-bin/ryderfp/products/srm/oid/157000/erm/product_detail.jsp?utm_source=googleaffiliate&utm_medium=banner&utm_campaign=affiliatemarketing
http://www.toolexplosion.com/loc-37616.html
http://www.sjdiscounttools.com/loc37616.html

Permatex tube: http://www.hardwareandtools.com/invt/6047971

AGS stick:http://www.amazon.com/gp/product/B0007QU5Q6

Champion bottle: http://www.aircraftspruce.com/catalog/eppages/antiseize.php

Are there any other plugs that will last more than 7500 miles? I got my 2009 versys in July 1, 2009 and I got over 4000 plus miles already. Just hate to have to replace plugs every 5, 6 months...

Thanks.

I've seen some amount of oxidation with Bosch spark plugs in aluminum heads, but never with NGK or Denso, even at over 100000 miles. If you use high-temperature anti-seize lubricant/compound, apply sparingly to second and third threads, and be aware that less tightening torque is needed due to reduced friction on the threads.

Loctite stick:
http://www.ryderfleetproducts.com/cgi-bin/ryderfp/products/srm/oid/157000/erm/product_detail.jsp?utm_source=googleaffiliate&utm_medium=banner&utm_campaign=affiliatemarketing
http://www.toolexplosion.com/loc-37616.html
http://www.sjdiscounttools.com/loc37616.html

Permatex tube: http://www.hardwareandtools.com/invt/6047971

AGS stick:http://www.amazon.com/gp/product/B0007QU5Q6

Champion bottle: http://www.aircraftspruce.com/catalog/eppages/antiseize.php

I've been doing it that way for years with no problems. I use a torque wrench on everything. If it doesn't click when I feel it should I lower the torque setting and make a note of it.