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FZ6If you’re looking for one bike to perform a multitude of missions, look no further.
Take it from Cycle World* Magazine - “For a more advanced rider looking for a bike to do it all, there is no other choice.”
I'm looking at NGK plugs, and the CR9EK is spec'ed in the manual. It is a multi-ground plug. NGK.com (not actually NGK) also lists the CR9EIX as an Iridium plug application for the FZ6. Does anyone know if the Iridium plug is a multi-ground plug also?
Both places (ngksparkplugs.com also) have pictures of the Iridium plug as single ground so I think I'm gonna stick with the manuals spec.
Correct. CR9EIX is a single ground plug. It will last alot longer than a standard plug though (apparently).
__________________ Naked Black FZ6-N
|FAZR6's excellent FE kit|Akrapovic's with cat eliminator|DNA filter|PCIII+Dyno'd|
|Clear signals and tail light|Braided Lines|Fjr04's decals|
Hmm... we all know how notorious the mototune guys are but they suggest the multi-ground ... well, err, ahh, >>>> QUOTING:
"If you own a bike with 10mm spark plugs, try NGK CR9EK spark plugs. (They come standard on the Yamaha R6 and the ZX9.) They're the ones with double electrodes. F2s, F3s, and F4s FZRs, ZX6s, 7s and GSXR's all use the single electrode type, and can be improved by switching.
I've tested most every type of spark plug available. There are some "racing only" plugs that go for over $40 each !!
The NGK CR9EK or NGK CR10EK are the only ones I've ever seen make a power difference. They cost about $7.00 - $9.00 each. The gain is from 1 to 2 horsepower increase, depending on the condition of the plugs you're replacing. That's a huge money to power ratio!
The "9" or "10" number refers to the heat range, which also doesn't matter. (it really doesn't)
The "EK" refers to the fact that they have dual electrodes. There isn't any advantage to having 2 electrodes. Think about it: You can't beat physics and get 2 sparks at one time. (That's the "Splitfire Theory")
Why Do They Work Better ??
One reason the CR9EK's or CR10EK's make more power is because they take up more space in the combustion chamber, which increases the compression ratio. The second reason is that the spark is .040" / 1mm deeper into the combustion chamber. I think that increases the burning efficiency at high speeds.
They work so well that Yamaha uses installs them in the R6 from the factory.
One word of warning: they have to be replaced more often since the last thread of the plug extends into the combustion chamber. This means that as the thread on the plug gets loaded with carbon over time, it can damage the threads in the head on the way back out. If you don't want to change your plugs once a season, these aren't for you."
The "9" or "10" number refers to the heat range, which also doesn't matter. (it really doesn't)
My car use 7 for heat range and I once put 9 instead 7 because some guy said that doesn't matter,car was good for one day and after that idle was everywhere,I put 7 back and everything was good
The "9" or "10" number refers to the heat range, which also doesn't matter. (it really doesn't)
My car use 7 for heat range and I once put 9 instead 7 because some guy said that doesn't matter,car was good for one day and after that idle was everywhere,I put 7 back and everything was good
No kidding. Um, if the heat range doesn't matter, then why do they state it? Unless the plugs are fowling, do NOT run a hotter plug or you'll burn out your piston.
Stupid people.
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Old enough to know better; still too young to care.
Pepboys is having a Black Friday sale on Champion copper spark plugs for $.69. Does anyone know if there is a copper Champion plug for the FZ6? Tried some cross over charts with no luck. Anybody got any numbers?
"The NGK CR9EK or NGK CR10EK are the only ones I've ever seen make a power difference. They cost about $7.00 - $9.00 each. The gain is from 1 to 2 horsepower increase, depending on the condition of the plugs you're replacing. That's a huge money to power ratio!"
If I am replacing old, worn plugs I would EXPECT to see a horsepower improvement!! Tell me what they do against NEW plugs and it may have meaning ...
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There is some perverse beauty about being up in the air looking down at your bike during a highside get-off
NGK Iridium Spark Plug Question
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