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K6 1000 Engine Vibration

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Discussion starter · #1 ·
My K6 seems to have a lot of vibration around 5000 rpm and above. I can feel this vibration throughout the bike especially in the handlebars, numbing my hands only after 20 min. on the highway. I also ride with my daughter on the back and her feet fall asleep in the same amount of time. The vibration seems to be engine-related. When I pull in the clutch to let the revs drop the vibration is gone. As soon as the rpm rises past 5000 again the vibration returns. :scratch

I have done a search on this site using as many different topics as I can think of and the only answers I have found seem to be things like "it's a GSX-R - deal with it", "it has high horse power, what do you expect", and "fill the handlebars with lead shot and silicone to help with the vibration". I would like to know why this bike vibrates so much. This is my 5th GSX-R and my 13th sportbike. This is the worse bike I've ever had for vibration.

I've only had the chance to ride one other K6 1000 and it was way smoother than mine.

I have syncronized the throttle bodies, I have checked the TPS and it's fine, I have done the clutch adjustment and I currently have 3000 kms or approximately 1800 miles on the bike. Any ideas or suggestions would be greatly appreciated.
 
#2 ·
I don't know what to say, it seems you've already checked all the things anybody would suggest. At first I was thinking the clutch adjustment... but if it's already in spec then I don't know. My K5 is smooth as day one and I'm over 20k already. If you suspect is something more serious let your warranty handle it, either that or try heavier bar ends and some thicker grips. Hope you get these issues resolved.

-Ty
 
#3 ·
K5 smooth??? u and i must have different bikes.
vibration is the only and biggest annoyance on my K6 and im told its standard on all gixxers, k1-k6.

Ty-Litre said:
I don't know what to say, it seems you've already checked all the things anybody would suggest. At first I was thinking the clutch adjustment... but if it's already in spec then I don't know. My K5 is smooth as day one and I'm over 20k already. If you suspect is something more serious let your warranty handle it, either that or try heavier bar ends and some thicker grips. Hope you get these issues resolved.

-Ty
Click to expand...
 
#4 ·
The cpu logs a lot of data. There is one chance in a million some clever fuck at the dealership can look at that and figure something out, like a bad injector or something incredibly simple like that. If it bothers you enough to let a dealer touch it, what have you got to lose?
 
#5 ·
My 04 is very smoooooooth.. just like a gold wing..
Try the engine mounting bolts, one might have come loose or not been torqued properly??
 
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#6 · (Edited)
Actually, it is not the engine...here is why:

I noticed that in 3rd gear, between 3000 and 4000 revs, the bike is so smooth and quiet that the first time I notcied this, I thought the bike literally stalled, I then looked down at the tach and realized it wasx still on and furthermore if it had stalled, I would have felt the bike rev-down.

This completely eliminated one variable--the engine as a source of dominant vibration. When I rev up past 4500 revs, the exhaust noise comes abck and so does the vibration. I have narrowed it down,t hat on my bike, at least, it is the exhaust responsible for the majority of the vibration in gears 1~4 at revs lower than 8000 rpms.

Just thought you may find it interesting. So make sure all of your exhaust mounting hardware is torqued down to spec.

-J
 
#10 ·
I think a lot of people who think their K5/6 is smooth may not have a lot of experience on other sport bikes. My K6 is way more buzzy than any previous GSX-R that I owned or presently own. My K2 is almost vibration free compared to my K6. I just figured it was due to lighter valve train and other engine componets. I like the handeling of the K6 much more than my other Gsx-Rs but no one can call it "smooth"
 
Discussion starter · #11 ·
john kinzell said:
My 04 is very smoooooooth.. just like a gold wing..
Try the engine mounting bolts, one might have come loose or not been torqued properly??
Click to expand...
Thanks for the reply. I forgot to mention i have torqued everything on the bike i could get at, and it was all fine.

rraiderr:
I will look into adjusting the STPS and let you guys know.
 
#13 ·
Goodin said:
i have a new k6 and no vibration at all that i can feel alot smoother than my r1
Click to expand...
I'm with Goodin on this one, I've ridden many many bikes from all the manufacturers and I still say my K5 is among the smoothest. I would not call it buzzy in the least, I get zero fatigue in my hands or feet from vibes... maybe there is something improperly set-up in the clutch or you got a bike built on monday.
 
Discussion starter · #17 ·
rraiderr said:
You can smooth this out by adjusting or trying different settings on the STPS.
Click to expand...
Tonight i checked the adjustment on the STPS. The range in the service manual is .48 - .52V Mine was right in the middle at .50V So i did not make an adjustment.
So far no luck finding a solution but i will keep looking.
Thanks for everyones replies, anyone else have any other ideas?
 
#18 ·
Bar end weights from a ZG1000 kawie is what I use on my 04, made a difference, it do.. bout double weight of the zook oem's.
 
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#19 ·
clintbeguhn said:
has anyone found heavy anti vibration bar ends that work. if so please post make model and?or link. have same vibration and it sucks on long rides. thanks
Click to expand...
Motovation sells heavier bar-end weights for $55/pair. As a matter of fact I may pick up a set because I plan to do a long road-trip on the K6 this summer (California up to Vancouver).

Image


A quote from the site:

"These are premium quality bar ends designed specifically for this bike. They have the correct slots machined into the backside exactly like your stock ones.
Raw Stainless Steel Finish

These balancers are machined from solid stainless steel bar stock. Each weighing 265 grams, they serve to counteract the high frequency vibrations that generate fatigue and discomfort while on longer rides (it'll really surprise you that these really do work!). They will not adversely affect the handling characteristics of your bike. Comes with replacement stainless steel socket screws.
These bar-end balancers are designed to be heavier than stock to cancel out the high frequency 2nd and 3rd order harmonic vibrations that cause discomfort and fatigue while riding (yes, they really work!). Take the Motovation test! Ride 50 miles with stock barends and then replace them with ours and go for another 50 mile ride and we'll take them back* if you do not feel a definite improvement in your riding experience! If you ride longer distances you have to have these as they'll eliminate that 'buzz' you feel in your hands after a long ride."
 
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