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Spark plug condition 2009 R1200RT
- Thread starter tgf429
- Start date
tinytrains
Still plays with trains.
First set of plugs at 25K?
Service spec's for the 09 are 24K miles for plug replacement.
Cam-Heads went to 12K.
pauls1150
MOA #24991, south of Los Angeles
On my oilhead ('04), the peripheral plugs always come out a bit darker than the center plugs, and yours look "typical" to me.
Oddly, last time I checked the NGK site, they actually want an even colder plug (for the 1150; heat range 8, instead of 6 or 7) if you go for the iridiums, but I stick to the "standards" and have no problems with 'em.
Oddly, last time I checked the NGK site, they actually want an even colder plug (for the 1150; heat range 8, instead of 6 or 7) if you go for the iridiums, but I stick to the "standards" and have no problems with 'em.
deilenberger
A bozo on the bus
They're done. The center electrode is rounded off - new it has sharp edges to help "focus" the spark. The outside electrodes also exhibit rounded edges.
New is due.
New is due.
With the three 07-09' s we have, none have looked good after 12K, the center electrodes are usually oval by then.
tinytrains
Still plays with trains.
That may be why they changed to 12K. Mine have 15K and are still running fine. I will keep my ears open.
deilenberger
A bozo on the bus
Might not be a great place - but it's a necessary place. The purpose of the bottom plug is to start two flame-fronts when the mixture ignites, allowing it to burn completely, and eliminating the lean-surge condition the R11 and R1150 bikes had (until the R1150xx bikes got dual plugs in '04..) It works and I'm not staying awake nights worrying about the bottom plug being darker. You can always swap the plugs center to bottom when you're checking the valve clearances.
Iridiums for Camheads
A little off topic, but does anyone know if there are Iridium spark plugs available for the Camhead yet?
My recent Google searches have not yielded any positive results yet.
Thanks.
BTW - "tgf429" , my 2012 R1200RT plugs look the same, darker on the lower plug. Especially the left side. When it is on the kickstand, a little oil must settle around the plug.
A little off topic, but does anyone know if there are Iridium spark plugs available for the Camhead yet?
My recent Google searches have not yielded any positive results yet.
Thanks.
BTW - "tgf429" , my 2012 R1200RT plugs look the same, darker on the lower plug. Especially the left side. When it is on the kickstand, a little oil must settle around the plug.
Norms 427
Norm
Good idea, Don! But, I'd rather have 100,000 mile plugs like in my 505 HP Chevy. No lean surge or two flame-fronts when the mixture ignites, etc. Sounds too complicated for my simple brain.
Oh, and no valve clearance adjustments, either. 
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Norms 427
Norm
You are obviously in need of a supercharger.
Chevy thinks so ... the new Z06s out in a few weeks will have a supercharger good for 650 HP.
Norms 427
Norm
But the name "427" evokes so much emotion from past successes.
Hey, you and I joined this illustrious forum at the same time, Nov, 2011, and you have almost 10 times as many posts as I have! What's with that?
Norms 427
Norm
6.2 liters and a supercharger gets me home faster and posting sooner?
OR, I have no life.
Sorry for the thread derail, everyone!
LOL. Derails are Ok. But now back to the Bottom Dark Plug topic.
