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S4R Sparkplugs

Started by 2KLuder, August 20, 2009, 02:05:33 PM

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2KLuder

August 20, 2009, 02:05:33 PM
I read up on the tutorial page about how to change the plugs on my bike...or what i thought was my bike. In the title it says "how to change plugs on S4R"...but in the post it specifies "S4R Testastretta ". So i ordered the plugs NGK CR9EIX. Will these still work? On the NGK site they specify DCPR9EIX.

2KLuder

#1
August 20, 2009, 05:58:52 PM Last Edit: August 20, 2009, 06:08:25 PM by 2KLuder
OK, no response....easier question...what plugs can i use on a 2005 S4R?

ducpainter

#2
August 20, 2009, 06:17:38 PM
the cr9eix won't work.

The DCPR9 is the one you want.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
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2CardDuc

#3
August 21, 2009, 07:26:25 AM
Can't speak for ducpainter's recommendation for the DCPR9, but I'll share what I use.  My plugwires have the internal caps, so if like mine; you need plugs with removable caps.  Iridiums are out for the setup.  Learned the hard way.  Caps still do not detach on iridiums. 

Anyhoo!  I have been using NGK DCPR7E / .024" (0.6-0.7mm) gap.  Ran these for 10K or so and changed during my 12K service and they still looked great and the bike performed flawlessly.  Originally when I tuned the bike, we fowled a couple and threw these in and they work great.  These can be picked up at most auto parts stores for $2 or so.  You can always pull the vertical plug and replace with like item…     

2KLuder

#4
August 22, 2009, 05:41:08 AM
Well i ordered up DCPR9EIX's a few days ago. Hope they have the right caps, the CR9EIX iridiums did. I took a look
at the champions in the bike and they look alright but worn. Amazed at how easy it was to change plugs in a monster.
I owned several four cylinder bikes until this point and wow, i'll change the plugs in a duc anyday!
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