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I got a ZX-12r before and it was probably the most quiet motor of all. But.

On my ZX-10r I noticed coming from the left side of the engine (when you're sit on it) like valve noise "ticking" from idle to around 3,000 rpm. Looking like loose cleareance of valve ???? Do that when the engine is hot espaecially at idle.

Engine broke now with 2,300 Km. Not use synthetic oil yet. I will try to see if the sound disapear.


Did anyone else get the same ???

For sure the ZX-10r engine is not quiet, doesn't bother me very much but will like to know if it's normal ??
 

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I have noticed a lot more noise from the top end also. The actual sound is hard to descibe. When the motor gets warm I believe I can hear the cams operating the valves. The 10 is way louder than the 12.
 
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I've had a few Kaws now, and the 12 has definitely been the quietest of them. A "rattley" top end is a Kawi trait.
 

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Intake flutter

You wanna hear valve clatter, take a listen to my YZF when it's warm.
I believe the noise the original poster is hearing is from the intake. The 10R has that big honking vent about 18 inches from your head that feeds the beast within. Once the revs pick up... it all just blends into a demonic howl anyway.
 
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