Louder valve noise when hot - Kawasaki ZX-10R.net
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post #1 of 13 Old 04-25-2018, 05:51 PM Thread Starter
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Louder valve noise when hot

Im working on a 2006 zx10r for a friend that he noticed considerable more valve noise when hot. He just bought the bike used, i tore it down and checked valve clearance. Just a few of the exhaust valves are tighter than spec the rest are in spec. Cam chain seems tight. Any one have experienced this before?
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post #2 of 13 Old 04-25-2018, 10:58 PM
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The gaps close as the engine gets hotter. But unless those two were ridiculously tight i cant see that being a problem.

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post #3 of 13 Old 04-26-2018, 08:23 AM
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The gaps close as the engine gets hotter. But unless those two were ridiculously tight i cant see that being a problem.
Yeah that's strange. The valves should get quieter as they tighten. I've never worried about valve noise on a Kawi. My 9R always ticked like crazy even after adjustment. Although it was consistent and didn't really change much with engine temp.
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post #4 of 13 Old 04-26-2018, 10:59 AM
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post #5 of 13 Old 04-26-2018, 12:31 PM
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post #6 of 13 Old 04-26-2018, 05:03 PM
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Yeah that's strange. The valves should get quieter as they tighten. I've never worried about valve noise on a Kawi. My 9R always ticked like crazy even after adjustment. Although it was consistent and didn't really change much with engine temp.
True story. Kawasaki engines are notoriously loud.

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post #7 of 13 Old 04-26-2018, 07:15 PM
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true story. Kawasaki engines are notoriously loud.

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^^^^^this.
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post #8 of 13 Old 04-27-2018, 07:55 AM
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Cam chain seems tight.
The valves ride on the camshaft lobes and don't slam shut so they should not be noticeably loud. That's not what you're hearing.



The cam chain "seems" tight depending on when and how it is checked. Since metal expands when hot and the cam chain grows slightly, I'd say the noise is chain related. And as mentioned, that's pretty standard for Kawi's and not a big deal.

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post #9 of 13 Old 04-28-2018, 08:13 PM
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cans are a bit loud but help cagers, unless someone has a migraine.
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post #10 of 13 Old 04-30-2018, 04:22 AM Thread Starter
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Found the noise and it wasnt the valves. The stunt cage was broken where it mounts to the frame so that and the cheese ball 3/8 threaded rod they used throught the rear motor mount was vibrating! Just sounded like it was near the head area
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