The owners manual for my 98 KDX 220 recommends an NGK BR8ES. A friend gave me a box of B8ES's. Can I safely run the non resistor plugs or will using them jeopardize my bkes electrical system?
Any help or advice would be greatly appreciated. Thanks.
'R' plugs are important in systems that have intricate control boxes or onboard computer systems. The 'r' is for a 'resistor' that is part of the plug. That resistor prevents the collapse of the hi voltage field in the wiring when the plug gap breaks down (sparks).
That collapsing field in a non-r plug radiates some electrical 'noise' that can hose-eh-vu some electronics.
Some will insist that 'r' plugs give you a hotter spark. You might find these same riders using splitfire plugs cuz they are so good.
If you believe the latter, certainly insist on the former!!
Run a B8EG, anyway....or a 'V' series if you don't mind the couple extra bucks. The 'G' series plug (fine wire) is superior to the standard size 'S' electrode.
You can feel the difference, for one. And you'll have less problems with fouling.....if your bike has a tendency toward that in the first place. Which it does if you haven't rejetted.
I run non-r plugs. Also always ride with a radio (motorola talkabout). My bike interferes not a whit with the radio. Doesn't interfere with my cell phone either.
NGK strongly recommends using resistor spark plugs in any vehicle that uses on-board computer systems to monitor or control engine performance. This is because resistor spark plugs reduce electromagnetic interference with on-board electronics.
Canyncarvr - Wow! Thanks for the response. You definitely sound like you know what you're talking about. Thanks for all the information. I am glad that I will be able to use the non resistor plugs that I have. I've got a box of ten and I'd hate to have them just sit there.
Im sure that using a non-r plug will not hurt your bike, it may hinder top end performance a bit. My bike came with a B9EG plug and all my friends told me to use R-Plugs. When the R plug was in it stopped cutting out in high revs, unlike the non-r plug which did cut out at high RPM's. So now I use R-Plugs. If not for the performance than for the protection as a new ignition costs around $500 and a Rplug costs $.20 more than the Non r plugs.
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