How often to do Valve Adjustments/Checks and Noise when applying front brake normal? - Sportbikes.net
 

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Old 06-05-2012, 03:04 PM   #1 (permalink)
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Default How often to do Valve Adjustments/Checks and Noise when applying front brake normal?

Hey guys 2003 CBR 600RR and has 13k miles. Just had an oil change and dealership said Valve Clearance check is due at 16k miles. Estimated about $400. I ask how often it should be done and they said should be checked every 10k miles. Not sure if the shop is being honest, but I never knew the CBR required that much maintenance. He told me that it is a high revving engine that valves go out of spec more so often. I just need confirmation from experts here if he is being honest or not. Also every time I apply the front brake it makes a noise. I dont know how to explain but it is the high pitched annoying one. I am wondering if it is normal, because I never had this noise from my previous bikes. The brake works just fine also and does not shudder or buck. Thanks in advanced.
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Old 06-05-2012, 03:06 PM   #2 (permalink)
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I'd have to go back and look at the service manual, but I had an 03 600RR a few years ago, and I want to say the valve service was every 12k. Or at least the 12k service was the first big one in the manual. Still, just need to get a copy of the manual.
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Old 06-05-2012, 03:24 PM   #3 (permalink)
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12k sounds about right. I believe that was what my SV1k was and my SV650 is.
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Old 06-05-2012, 03:32 PM   #4 (permalink)
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They need to be checked that frequently. They probably aren't far out of spec though. I have a ton of miles on my zx10r around race tracks, and when we checked it only 3 valves were slightly off. It wasn't even worth adjusting at 38000km, with 3.5 years of racing on it
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Old 06-05-2012, 03:34 PM   #5 (permalink)
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Be clear to ask if that's 400$ to check them , or
400$ to actually shim the ones outside spec
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Old 06-05-2012, 04:20 PM   #6 (permalink)
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that seems high to just check them. although I hear guys say a honda is a bitch to work on because of all the unnecessary shit in the way.
mine didn't need any adjusted until recently (43k miles) but yamaha's service interval is 26k miles. yamaha's tick though. honda probably runs a tighter spec to keep the noise down. drawback would be more checks needed.

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Old 06-05-2012, 11:32 PM   #7 (permalink)
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I don't know, my RC-51 ticked a lot around 4k but when I checked the valves at 35,XXX they were still fine. Funny thing is, that the valves were supposed to be checked every 18,000 miles.
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Old 06-05-2012, 11:55 PM   #8 (permalink)
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Thanks for the reply guys. My bike is approaching 16k and I was actually thinking of skipping and waiting till about 20k miles. I did read somewhere that my Valve interval is every 16k miles. Is there a reason Yamaha has a longer one? I still didnt ask the shop if its just to check, but $400 is insane! About how much is it to check the valves though? I should find another shop.
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Old 06-06-2012, 08:48 AM   #9 (permalink)
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400 is not bad to check and adjust. That shit takes a LONG time to do, and is a total pain in the ass.

It's pretty much an entire day project on a lot of bikes. Some of them you need to pull the cams out to adjust the valves, and then re-time the engine when you are done.

I'd get it done sooner rather than later. But that's just me.

Generally, they need to be adjusted around 15k, and then again at 25k and then you can just check them again every 20 or 25k... they reach a point and then don't move much after that, basically.
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Old 06-06-2012, 12:43 PM   #10 (permalink)
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I just pulled up the owners manual at work and it says inspection every 16k miles on the valves. But it also says to replace the oil and filter every 8k miles.... which seems like an awfully big gap between changes for me.
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Old 06-06-2012, 02:08 PM   #11 (permalink)
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4bills is better than a head, piston or complete engine replace, ask me how I know. Mine was redline infraction tho not a valve job that was not done issue.
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Old 06-06-2012, 04:08 PM   #12 (permalink)
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Kevinwilly is that true that after a certain amount of Valve checks you wont have to do any more? hmm That is interesting! Never heard of that. And yeah huh. 8K miles for an oil change seems too long! 4 bills seems a lot though just to have it checked. I have to shop around. Hey noone answered about the front brake noise yet lol
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Old 06-06-2012, 04:41 PM   #13 (permalink)
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and it's always the exhaust valves that need adjusted. (so I hear) and was true for me.
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Old 06-07-2012, 06:31 AM   #14 (permalink)
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It's pretty damn rare for one of those valves to go out of spec. I didn't check the valves on my 07 CBR600RR until 33K, and they were perfect. That's on a bike with dozens of track days and daily excursions to the rev limiter. I'd be perfectly comfortable letting it go until 32K.

So, the spec says 16K. The vast majority of bikes are fine at 16K and need no adjustment. You'd be betting $400 against the price of a new engine that your bike is good-to-go. I thought it was a reasonable bet. You may think differently.
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