Help!!!! Vibration at certian rpms

2001 929rr · 10-05-2006, 8:27 AM

I have a 2001 929rr with 23k miles on it. I have been reading the threads on vibration and I haven't read one that describes this. I have the same problem as most with the vibration at 5k no big deal. The problem that I'm having is that around 9k to almost 10k I can hear a very annoying vibration from the airbox/engine area. At 10k until redline it's not there. With the bike upright, if you lean your body to the left ot right you can't hear the sound. It's only when you in riding position. I have a Sato Racing full exhaust, the airbox mods, pair valve block off plates and an APE MCC tensioner. I have recently done a valve clearance check and they were fine. What could be causing this noise at that particular RPM. The bike is running great not stumbling at the above RPMs due to the vibration/noise. If you guys have experienced this please let me know what the fix was. Thanks for the info.

mathyoomay · 10-05-2006, 11:24 AM

cam chain tensioner, do a thread search on that and you may find your answer.

Red Rider · 10-05-2006, 1:00 PM

Could be the CCT...could be the exhaust...or could be something as simple as the airbox vibrating. Kind of hard to diagnose over the internet.

2001 929rr · 10-05-2006, 7:46 PM

I've already replaced the cam chain tensioner with the unit from APE, so I would hope that's not the problem. What in the exhaust could create that noise?

I've already checked the airbox - it's good.

*Fastrr* · 10-05-2006, 8:57 PM

My airbox vibrates and creates a buzzing sound at certain rpm's.. darn thing is finicky about the way it wants to be put on just perfect or it makes that vibration. If it's not affecting your power in any rpm range, my guess is it's just some part of the bike vibrating, like the airbox or whatever.

You said you have the airbox mod? Maybe something came loose there or isn't on all the way.

Red Rider · 10-05-2006, 9:46 PM

Quote:

Originally Posted by 2001 929rr

I've already replaced the cam chain tensioner with the unit from APE, so I would hope that's not the problem. What in the exhaust could create that noise?

I've already checked the airbox - it's good.

Check the header bolts and all the pipe connections.

2001 929rr · 10-05-2006, 10:04 PM

Quote:

Originally Posted by Red Rider

Check the header bolts and all the pipe connections.

Maybe I should look into putting the heat shrink on the springs that attach the pipes together. I could have added that as an upgrade when purchasing the system but didn't. It did say that it would cut down on the vibration of the system a little. Let me try that also and see what I get.

2001 929rr · 10-10-2006, 10:16 AM

Well I put the heat shrink on the springs Saturday. I rode it today to work and the vibration/nosie @ 9k has been cut in half. Also in general the noise of the bike has went down considerable. I guess that the vibration in the exhaust of the springs really causes a heck of a lot of noise. I can defiantly deal with this noise a lot better than the other noise. Thanks for all the help.

jrelli01 · 11-24-2006, 9:53 PM

ok im new here!! I have an 01 929rr with 4600 miles when i bought it 3 months ago... it has a bad rattle vibration @ 3800 rpm .. its coming from the bottom of the exaust.. i think its the same problem you were having, where do i get those heat springs from? ,, it could be the exaust valve beow the header though.. but im sure it comming from there. i can see it and hear it when i lay under the bike and rev it up.... thanks for the help.... jason picarelli 850.209.8777

69TEQ · 04-23-2007, 4:19 AM

check your front tyre,, if its worn and wasnt balanced , it will vibrate right up thru the bars