Technical Discussion Topics related to Technical Issues

Weird Noise, CCT or Slide Chatter?

Old 03-17-2018, 08:12 PM
  #1  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
Weird Noise, CCT or Slide Chatter?

Hi SH forums,
For a while now my chicken has been making a rattling sound at low RPMs (less than 3k) while taking off, crusing, decelerating, and sometimes while idling. It only occurs after the engine has warmed up.

I heard that this bike can have significant carb slide chatter, but I am not familiar with how that sounds. I want to replace the CCTs, but I don't want to drop the cash if they're not broken.

Here is a video with the sound. It is prominent as the revs are falling.

Do I need to be worried about this sound?

Thanks,
Nathan
nrowah is offline  
Old 03-18-2018, 03:41 AM
  #2  
Senior Member
SuperBike
 
kenmoore's Avatar
 
Join Date: Mar 2012
Location: New South Wales Australia
Posts: 1,527
kenmoore is on a distinguished road
Be done with it and fit Manual Cam Chain Tensioners !

One less thing to worry about and you can get on with enjoying the bike.

There is a good "Tutorial" on another VTR site. VTR.org is the one. Look in the workshop knowledge base.

5 mm is the correct tension of the chain when you fit the Mccts .

Good luck, it's not hard to do, just follow the instructions.

Cheers and welcome !
kenmoore is offline  
Old 03-20-2018, 05:24 AM
  #3  
Moderator
MotoGP
 
Wolverine's Avatar
 
Join Date: Jul 2007
Location: Gettysburg, Pa
Posts: 4,479
Wolverine is on a distinguished road
If I were in your shoes, I'd do cct's and check valve clearances at the same time, and I wouldn't ride it till complete. To me, that doesn't sound like carbies.
Do you know the last time valves were checked, what's the mileage now?
Wolverine is offline  
Old 03-23-2018, 08:51 AM
  #4  
Senior Member
Back Marker
 
fabiostar's Avatar
 
Join Date: Jan 2017
Posts: 153
fabiostar is on a distinguished road
change your ccts before they drop you in a whole world of ****....
fabiostar is offline  
Old 03-23-2018, 05:19 PM
  #5  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
I checked the CCTs and did the valves today. The springs in both the ccts still held tension. They were pretty hard to unwind.

Rattle is still there however. Local mechanic says only thing he can think of at this point is rod knock. Any thoughts?
nrowah is offline  
Old 03-24-2018, 06:32 AM
  #6  
Senior Member
SuperBike
 
xeris's Avatar
 
Join Date: Sep 2010
Location: Bisbee, AZ
Posts: 1,461
xeris is on a distinguished road
Originally Posted by nrowah View Post
I checked the CCTs and did the valves today. The springs in both the ccts still held tension. They were pretty hard to unwind.

Rattle is still there however. Local mechanic says only thing he can think of at this point is rod knock. Any thoughts?
The tension of the CCT springs is not an indicator of anything more than it's a spring. The springs just fail, without warning of any type.
xeris is offline  
Old 03-24-2018, 09:33 AM
  #7  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
Originally Posted by xeris View Post
The tension of the CCT springs is not an indicator of anything more than it's a spring. The springs just fail, without warning of any type.
Thing is the springs havent failed yet but my bike is still making the noise.
nrowah is offline  
Old 03-25-2018, 02:50 AM
  #8  
Senior Member
SuperBike
 
Wicky's Avatar
 
Join Date: Sep 2008
Location: Essex, UK
Posts: 1,637
Wicky is on a distinguished road
Have you checked for exhaust gas leaks from the manifold / header connector as a gasket failure in that dept. can lead to a pulse 'rattling' noise.
Wicky is offline  
Old 03-25-2018, 06:11 AM
  #9  
Senior Member
SuperBike
 
xeris's Avatar
 
Join Date: Sep 2010
Location: Bisbee, AZ
Posts: 1,461
xeris is on a distinguished road
Send a used oil sample to Blackstone Labs for analysis. The report will give you a pretty good indicator of the internal health of the engine. This will rule out a lot of expensive dead ends.
Oh, and it is perfectly clear that your CCTs have not failed, yet.
xeris is offline  
Old 03-25-2018, 07:36 AM
  #10  
Senior Member
SuperBike
 
NHSH's Avatar
 
Join Date: Jul 2011
Location: South of Live Free or Die & North of Family Guy
Posts: 1,397
NHSH is on a distinguished road
Originally Posted by Wicky View Post
Have you checked for exhaust gas leaks from the manifold / header connector as a gasket failure in that dept. can lead to a pulse 'rattling' noise.
Was about to say, kinda hard to determine by video sound, but seems like you can hear exhaust leak...
NHSH is offline  
Old 03-28-2018, 12:15 PM
  #11  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
Originally Posted by xeris View Post
Send a used oil sample to Blackstone Labs for analysis. The report will give you a pretty good indicator of the internal health of the engine. This will rule out a lot of expensive dead ends.
Oh, and it is perfectly clear that your CCTs have not failed, yet.
That sounds like a pretty good thing to do. When I did the valves I may have let a little dirt into the heads (windy day). Do you think that may affect the results?

And yep I keep hearing mixed reviews about the auto CCTs. Most people I talk to in person say keep the auto ones, but the forums seem pretty dead set on the manual ones. I think for now I'll do the stopper mod.

Lastly, I have access to my brother's VTR (he got one because he liked mine). Will check to see if that one has the same kind of rattle. His has Jardine pipes though, so it might be tougher to hear.
nrowah is offline  
Old 03-28-2018, 04:08 PM
  #12  
Senior Member
Superstock
 
CaryDG's Avatar
 
Join Date: Sep 2013
Location: Costa Mesa, CA
Posts: 299
CaryDG is on a distinguished road
Does the sound change if you pull in the clutch while it's idling?
CaryDG is offline  
Old 03-29-2018, 10:15 AM
  #13  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
Originally Posted by CaryDG View Post
Does the sound change if you pull in the clutch while it's idling?
I havent checked that actually, but it does occur in gear while riding so I'm doubting its the clutch. Will be back with my bike in a few days so I'll check it then.
nrowah is offline  
Old 03-31-2018, 02:43 AM
  #14  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
Well I tried my brother's VTR today, and his definitely does not make the sound. Im starting to think it might be a rod knock. Could that possibly be the sound?
nrowah is offline  
Old 03-31-2018, 04:45 PM
  #15  
Moderator
MotoGP
 
Wolverine's Avatar
 
Join Date: Jul 2007
Location: Gettysburg, Pa
Posts: 4,479
Wolverine is on a distinguished road
Paging J.I.
Wolverine is offline  
Old 04-03-2018, 08:07 PM
  #16  
Junior Member
Squid
 
Join Date: Feb 2018
Posts: 9
twinisin is on a distinguished road
Use a large screwdriver, place the blade all over the engine while running and place your ear against the handle of the screwdriver. You'll hear a lot of scary noises, but one will stand out. This will help you pinpoint the problem, especially since you have access to another bike to compare it to.
twinisin is offline  
Old 04-05-2018, 02:52 PM
  #17  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
I tried the screwdriver trick and I didn't like it so much, so I got an actual stethoscope. Each time I try to diagnose the sound, it isn't present unfortunately. I think when the oil gets too warm it stops making the sound, which is kind of strange.

So far I've heard clattering from the rear CCT, but I need to refine my methods before I draw any solid conclusions. Will keep trying over the next few days.
nrowah is offline  
Old 04-05-2018, 08:58 PM
  #18  
Junior Member
Squid
 
Join Date: Feb 2018
Posts: 9
twinisin is on a distinguished road
That is a bit strange, from my V-twin experience the front is usually the one that gets punished, unless the carb is way lean. You may be onto something that will make many of us scratch our heads. Try rolling the throttle slowly and identify at what rpm the noise is present. If the chain is under tension at all time, it normally won't make noise, and if its not an exhaust leak, than it probably is a valve issue, hopefully not. How is the temp on both cylinders? Compare the two to see if there is a difference, which is either caused by friction or lean fuel mixture.
twinisin is offline  
Old 04-06-2018, 02:39 PM
  #19  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
Had more time to check the noise today. Here, s what i found.

-Noise occurs when engine is partially warmed up
-Stronger from the rear cylinder
-Clanking heard with stethoscope over rear cam chain area.
-Front cam chain has much less noticeable noise

I am going to replace the rear cam chain tensioner. If the noise goes away, I'll replace the front as well to be safe.
nrowah is offline  
Old 04-06-2018, 05:43 PM
  #20  
Senior Member
SuperBike
 
xeris's Avatar
 
Join Date: Sep 2010
Location: Bisbee, AZ
Posts: 1,461
xeris is on a distinguished road
Originally Posted by nrowah View Post
Had more time to check the noise today. Here, s what i found.

-Noise occurs when engine is partially warmed up
-Stronger from the rear cylinder
-Clanking heard with stethoscope over rear cam chain area.
-Front cam chain has much less noticeable noise

I am going to replace the rear cam chain tensioner. If the noise goes away, I'll replace the front as well to be safe.
Just a suggestion: Pull the valve covers before any thing else. This will give you a crystal clear view of what is going on with the cam chain. Also, at the absolute minimum, replace the auto CCTs with new ones. Or, as this would be a good opportunity to do the stopper mod, if you're not going to do manual CCTs.
$.02
xeris is offline  
Old 04-06-2018, 06:06 PM
  #21  
Moderator
MotoGP
 
Wolverine's Avatar
 
Join Date: Jul 2007
Location: Gettysburg, Pa
Posts: 4,479
Wolverine is on a distinguished road
Originally Posted by xeris View Post
Just a suggestion: Pull the valve covers before any thing else. This will give you a crystal clear view of what is going on with the cam chain. Also, at the absolute minimum, replace the auto CCTs with new ones. Or, as this would be a good opportunity to do the stopper mod, if you're not going to do manual CCTs.
$.02
See post 2, 3, 4...

Or wait till something breaks, then you know what to fix.
Wolverine is offline  
Old 04-12-2018, 10:12 AM
  #22  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
Going to change the oil today. If it comes out ok (not glittery), I'll finally cave in to manual ccts.

APE ccts seem hard to come by. Where would be a good place to pick up a set? Could i go with off brand ones instead? On ebay they seem to be about half the price.
nrowah is offline  
Old 04-12-2018, 11:51 AM
  #23  
Senior Member
Back Marker
 
Aquasnake's Avatar
 
Join Date: Nov 2012
Location: Henderson, NV
Posts: 207
Aquasnake is on a distinguished road
Originally Posted by nrowah View Post
Going to change the oil today. If it comes out ok (not glittery), I'll finally cave in to manual ccts.

APE ccts seem hard to come by. Where would be a good place to pick up a set? Could i go with off brand ones instead? On ebay they seem to be about half the price.
Krieger cam chain tensioners
Aquasnake is offline  
Old 04-12-2018, 03:08 PM
  #24  
Senior Member
Superstock
 
CaryDG's Avatar
 
Join Date: Sep 2013
Location: Costa Mesa, CA
Posts: 299
CaryDG is on a distinguished road
I had a set of Kiegers and a set of off brand Ebay specials. With the exception of the quality of the anodizing and lack of gaskets, I couldn't find a quality or dimensional difference. I installed the off brand ones in my SH 20+k miles ago with no problem, so far. I did however use the VTR1000.org write up on adjusting them.
CaryDG is offline  
Old 04-12-2018, 11:35 PM
  #25  
Senior Member
SuperBike
 
Wicky's Avatar
 
Join Date: Sep 2008
Location: Essex, UK
Posts: 1,637
Wicky is on a distinguished road
Originally Posted by Aquasnake View Post
Krieger cam chain tensioners
Krieger Cam Chain Tensioners

VTR1000 S'hawk/F'storm
Wicky is offline  
Old 04-13-2018, 08:55 AM
  #26  
Member
Squid
Thread Starter
 
nrowah's Avatar
 
Join Date: Apr 2017
Posts: 30
nrowah is on a distinguished road
Oil came out with only little microscopic particles of metal, but not enough to convince me that ive spun a bearing.

Ordered mccts, will be going in next week. Will update on how they turn out.
nrowah is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
smokinjoe73
Modifications - Performance
3
09-14-2014 06:13 AM
bundleofgrundle
Technical Discussion
13
06-05-2009 01:27 AM
nw68868
Technical Discussion
5
07-10-2008 09:22 PM
SuperHawkins
Technical Discussion
5
10-19-2007 09:04 AM
EngineNoO9
General Discussion
7
05-23-2006 10:25 PM


Thread Tools
Search this Thread
Quick Reply: Weird Noise, CCT or Slide Chatter?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

All times are GMT -7. The time now is 10:46 PM.


© 2019 MH Sub I, LLC dba Internet Brands