Engine Knock Sound NOT CCT - Videos - 600RR.net
Engine Tech This forum will be dedicated for internal Engine threads , discussions, upgrades etc etc

 
LinkBack Thread Tools
post #1 of 6 (permalink) Old 09-02-2015, 10:24 PM Thread Starter
Training Wheel Hero
 
TinchoOo's Avatar
 
Join Date: Sep 2015
Location: SoCal
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Engine Knock Sound NOT CCT - Videos

Hello Guys,

I'm having a rattle/knocking sound on the right side (clutch side) of the engine.
The sounds happens when is at idle and barely dissapears once the engine pass the 3k rpm's, but I can notice if I'm close to the engine.

Here's a video :



Ideas ? Thoughts ?

I disassembled the clutch cover and found everything in place, except that there's some play (backlash) between clutch basket gear and primary gear on the crankshaft. Here's a video showing it :



Do you think that's normal or I should replace the entire clutch ?

To isolate if there was a engine problem, I removed the clutch completely and started the engine for 10 seconds, the knock sound was gone.

So I'm stuck if the problem comes from :

- Clutch basket
- Tranny (I rotated it manually and didn't find any abnormal sound)

Thanks a lot guys !
TinchoOo is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 09-03-2015, 08:30 AM
Training Wheel Hero
 
Join Date: Mar 2014
Posts: 28
Thanks: 4
Thanked 6 Times in 4 Posts
Feedback Score: 0 reviews
What happens to the noise when the clutch lever is pulled or even just lightly grabbed (thus preloading the clutch springs)?
tezwa is offline  
post #3 of 6 (permalink) Old 09-03-2015, 11:41 AM Thread Starter
Training Wheel Hero
 
TinchoOo's Avatar
 
Join Date: Sep 2015
Location: SoCal
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by tezwa View Post
What happens to the noise when the clutch lever is pulled or even just lightly grabbed (thus preloading the clutch springs)?
Almost the same thing. In the first video, I pull the clutch, the knock/rattle barely changes but is still there...
TinchoOo is offline  
 
post #4 of 6 (permalink) Old 09-03-2015, 02:38 PM
AMA Supersport Racer
 
Join Date: Feb 2012
Posts: 567
Thanks: 30
Thanked 62 Times in 54 Posts
Feedback Score: 1 reviews
Does it do the same thing in gear?
jskateborders is offline  
post #5 of 6 (permalink) Old 09-03-2015, 03:58 PM Thread Starter
Training Wheel Hero
 
TinchoOo's Avatar
 
Join Date: Sep 2015
Location: SoCal
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by jskateborders View Post
Does it do the same thing in gear?
Same thing while the wheels are in the air (motorcycle lifted)

If I go for a ride, while its pulling and in gear, no sound.

If i'm in neutral or in gear but with no gas, just rolling, knock sound
TinchoOo is offline  
post #6 of 6 (permalink) Old 09-09-2015, 06:16 PM
Training Wheel Hero
 
Join Date: Aug 2015
Posts: 16
Thanks: 2
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Could be the roller bearing in the clutch when it's not under load? Worth stripping the clutch down and making sure the bearings have no crap in them and that the centre nut is properly torque'd up and the nut is staked.
ZeusHavok is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the 600RR.net 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
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










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



Posting Rules  
You may not post new threads
You may not 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 On
Pingbacks are On
Refbacks are On

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