929 gives a knocking sound when reving it - Honda Motorcycles - FireBlades.org
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

User Tag List

 
LinkBack Thread Tools
post #1 of 12 Old 05-13-2005, 8:51 PM Thread Starter
 
Join Date: 05-13-2005
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
929 gives a knocking sound when reving it

Hi!

My cbr 929 -00 gives a knocking sound when i quickly rev it from idle.. Is it supposed to be like this or is something broken?

One of my thoughts is that its the came chain that makes the noise?..
sep420 is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 05-13-2005, 8:54 PM
 
Join Date: 12-07-2001
Posts: 265
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: 929 gives a knocking sound when reving it

It's time for a new engine

Oh look! Here's one for sale now!

Used Engine - Very Cheap!


Chrome Dome is offline  
post #3 of 12 Old 05-13-2005, 8:54 PM
 
Join Date: 12-07-2001
Posts: 265
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: 929 gives a knocking sound when reving it

Crap! You're in Sweeden. Never mind
Chrome Dome is offline  
Sponsored Links
Advertisement
 
post #4 of 12 Old 05-13-2005, 8:57 PM Thread Starter
 
Join Date: 05-13-2005
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: 929 gives a knocking sound when reving it

I hope youre kidding me about the new engine?
sep420 is offline  
post #5 of 12 Old 05-13-2005, 9:20 PM
 
Join Date: 08-15-2002
Posts: 10,811
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
   
Re: 929 gives a knocking sound when reving it

Hey sep, welcome to the .org! I can't help you regarding your engine problem, but it's probably something very minor. Cam chain tensioner could very well be it. Someone on here will no doubt chime in and offer you suggestions.
Bacchus is offline  
post #6 of 12 Old 05-13-2005, 10:32 PM
 
Join Date: 09-20-2004
Location: Queensland, Australia
Posts: 454
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 16
 
Re: 929 gives a knocking sound when reving it

Quote:
Originally Posted by sep420
Hi!

My cbr 929 -00 gives a knocking sound when i quickly rev it from idle.. Is it supposed to be like this or is something broken?

One of my thoughts is that its the came chain that makes the noise?..
Hey Sep420,

what kind of noise is it ?, low down heavy knock or lighter metallic one ?

Sorry, no technical answer here - just another opinion / perspective...

I think I know the sort of noise you mean because my 929 makes a kinda single knock type of noise if I blip the throttle from idle...I've never worried about it because that's the only time I hear anything like it - certainly never hear it when out riding or anything. I guess there's a fair bit of inertia in the engine and with FI the throttle response is so instance (not like the old vacuum carbies) so it's gotta make some kind of noise as everything rushes to get up to speed...


Cheers, Spanky.
Spanky is offline  
post #7 of 12 Old 05-13-2005, 11:55 PM
 
EatnAsphalt's Avatar
 
Join Date: 06-07-2001
Location: Monterey, CA
Posts: 847
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 19
 
Re: 929 gives a knocking sound when reving it

Does the sound seem to happen around 3500 rpm? Might be the HTEV moving. The bushings are known to wear.
EatnAsphalt is offline  
post #8 of 12 Old 05-14-2005, 6:07 AM Thread Starter
 
Join Date: 05-13-2005
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: 929 gives a knocking sound when reving it

No, the sound appears just when i crank the throttle, only once.. It doesnt appear if i idle at a little higher rpm, say 2000 and crank it.. only from idle.. No other strange sounds around 3500 and 7000 where the exhaust valve moves, so i dont think its related to that..

Its not metallic, more low freq.. Dont know how to explain.. kinda like if you tap the engine case with a wooden pole or something

Go out and try it My guess is its supposed to be like that, but since the 929 is pretty new too me i wanted to check if others have the same sound..

Last edited by sep420; 05-14-2005 at 6:09 AM.
sep420 is offline  
post #9 of 12 Old 05-24-2005, 4:30 PM
 
Join Date: 05-16-2005
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: 929 gives a knocking sound when reving it

Pull the clucth and blip the throttle.. you will notice it's not there.. I think it's the Clutch basket where the plates slam into it..
BladeWala is offline  
post #10 of 12 Old 05-24-2005, 7:36 PM Thread Starter
 
Join Date: 05-13-2005
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: 929 gives a knocking sound when reving it

Ok, but is it supposed to be like that or is something wrong with my clutch?
sep420 is offline  
post #11 of 12 Old 05-25-2005, 2:09 AM
 
Join Date: 12-19-2001
Posts: 172
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: 929 gives a knocking sound when reving it

[QUOTE=sep420]Its not metallic, more low freq.. Dont know how to explain.. kinda like if you tap the engine case with a wooden pole or something

QUOTE]


Both of my 929's made the same noise.......very normal.
pdoyle64 is offline  
post #12 of 12 Old 05-25-2005, 4:17 AM
 
Join Date: 05-16-2005
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: 929 gives a knocking sound when reving it

i have 2 929 blades, one with only 4000m and the other with 22000.. the 1st has been loved the other has been abused .. but still loved - honest!!

The 4k one has virtually no clutch rattle/noise at idle or when rev'd at standstill, but... does have very bad piston slap/rattle.. this is noticed when accelerating hard.... between 3k to 5.5 k revs the engine produces a rattly sound like it's loose, and the camshaft is not hitting the shims properly, very pronounced and I can't stand it!!

The 22K one has a lotof clutch rattle at standstill but very little piston slap!! so when throttling it it fells quieter and newer than the 4k one.. wierd..

I just hope it is piston slap and not a worn cam belt tensioner!!

Clutch Rattle is normal, and there is no cure short of a new clutch basket.. and that is an expensive item to replace!
BladeWala is offline  
Reply

  Lower Navigation
Go Back   Honda Motorcycles - FireBlades.org > Honda Motorcycle Models > Honda FireBlade

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda Motorcycles - FireBlades.org forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
A valid e-mail address is REQUIRED. You will not have access to any site features until you activate your account using the activation e-mail that is sent to this address.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Rattling sound on 929 20blks Honda FireBlade 5 12-01-2004 7:04 AM
CBR 929 Not for Racers Ivo Honda FireBlade 16 10-26-2004 9:40 AM
How to make my 929 feel like a 600RR miweber929 Honda FireBlade 20 10-24-2004 9:54 PM
100,000 kms on a 929 omen137 Honda FireBlade 20 10-08-2004 12:21 PM
929 almost stolen Grunt Honda FireBlade 14 07-08-2004 11:51 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome