Kawasaki Concours Forum

The C-14, aka Kawasaki Concours-14, the new one :) => The Bike - C14/GTR 1400 => Topic started by: Bikerdad on June 07, 2013, 04:51:20 PM

Title: Exhaust vibration at higher speeds
Post by: Bikerdad on June 07, 2013, 04:51:20 PM

On my 2012 connie with 10,000 miles is giving me a vibration throughout whole bike at higher than highway speeds . This vibration is also present on hard acceleration . It is strongest at the grips as it runs through my hands enough to cause numbness. If  I get up to speed and pull in clutch to let engine RPM down it goes away so my gut feeling is it is from exhaust. Any one care to share their views ?

Ron

Title: Re: Exhaust vibration at higher speeds
Post by: VirginiaJim on June 07, 2013, 06:50:05 PM

Does it seem pronounced more on the right side?  If so, it might be due to the exhaust.  Are you running the stocker or an aftermarket?

Title: Re: Exhaust vibration at higher speeds
Post by: Spanky on June 07, 2013, 07:05:14 PM

Tighten your nuts man  :)

Title: Re: Exhaust vibration at higher speeds
Post by: VirginiaJim on June 07, 2013, 07:28:19 PM

I was thinking that but didn't want to come out and say it.  Kinda embarrassing if you know what I mean...

The header pipe attachment nuts can loosen over time.  Not sure if that's the cause or not but it doesn't hurt to check them.  I think the torque is around 13ft-lbs.  Someone correct that if I'm wrong...but then again I might be right.  50-50 preposition.

Title: Re: Exhaust vibration at higher speeds
Post by: Cuda on June 07, 2013, 07:54:34 PM

On the subject of nuts
I have SPECIAL NUTS
I don't like messin with my nuts ... any more 
I'm into low maintenance nuts
Not all nuts are the same
Nylock nuts won't work with the heat ...melt
what kind of nut I'm I ;)
Silver anti-seize  is your friend
Torque , Heat cycle , torque , enjoy :)
http://www.amazon.com/Motion-Pro-Fuji-Lock-Head138mm-30-0308/dp/B000WK2ZZG (http://www.amazon.com/Motion-Pro-Fuji-Lock-Head138mm-30-0308/dp/B000WK2ZZG)
Fuji loc nut

 

Title: Re: Exhaust vibration at higher speeds
Post by: Bikerdad on June 08, 2013, 07:57:29 AM

Well guys my nuts were taken care of 2 weeks ago and torqued to spec. I have noticed the vibration around same time ,and yes more pronounced on right side . How is motor attached ,fixed to bike frame ? Is there a possibility that a motor mount is loose and at speed under torque the exhaust is rubbing somewhere on frame ? Has any one had this problem ?

Title: Re: Exhaust vibration at higher speeds
Post by: VirginiaJim on June 08, 2013, 09:23:31 AM

If you didn't notice the vibration before the nuts were tightened and now you do, it's something to do with that.  I doubt seriously that the tech mucked about with the motor mounts..