tt600r Knock

**Craig43** · #1 6 Sep 2009

Under acceleration, low revs there is a knock which appears to be coming from top end? It passes as soon as the engine load decreases.
Has any one else with tt600r or similar experienced similar situation?
It is not a tappet noise.
Engine has 9000kms on it and has been maintained re specs.
Any info appeciated
Thankyou
Craig

**Gawain** · #2 6 Sep 2009

Loose balance shaft/crank shaft nut? Supposed to be a common problem. And its all under the rhs engine cover

**Pigford** · #3 6 Sep 2009

Is it defo a "knock" & not a "rattle".... I'm thinking it could be 'pinking'...

**Craig43** · #4 12 Sep 2009

Yes it was "pinking", have changed to a higher octane,situation resolved.

Thank-you for your time.

Craig.

**bacardi23** · #5 12 Sep 2009

Hey... if you you're standing on the bike with the feet on the floor and the engine off, push your front suspension up and down hard...

My XT600E stock front suspension started making a "knock" sound when I hit a small bump on the road or when braking so I changed it...

It was when I made that same thing I said on the first phrase that I found out the noise was coming from the suspension and not the engine...

Vando

**tommy10bikes** · #6 15 Oct 2009

Hi , My TT600r also knocks at the top end, i did wonder if it was the little end bearings, i have disconnected the advance and retard unit which i would suspect it to knock if the octane rating is low, do you use super plus or a octane aditive, also have you also had teh ADV & REt unit disconnected.
Help is much appreciated, if it helps i have a parts list on PDF for the TTR.
Cheers mark

**Craig43** · #7 19 Oct 2009

Quote:

Originally Posted by tommy10bikes

Hi , My TT600r also knocks at the top end, i did wonder if it was the little end bearings, i have disconnected the advance and retard unit which i would suspect it to knock if the octane rating is low, do you use super plus or a octane aditive, also have you also had teh ADV & REt unit disconnected.
Help is much appreciated, if it helps i have a parts list on PDF for the TTR.
Cheers mark

yes my retard is disconnected I am using a 95 octane has knocked the noise down but not out.
I agree disconnecting the retard of course there will be some pinking.

Craig

**tommy10bikes** · #8 19 Oct 2009

MMM, my initial thought is that its the little end that has play in it, i have decided that i will strip it down next year once i have finish green laning this winter.
Cheers mark

**Craig43** · #9 22 Oct 2009

Quote:

Originally Posted by tommy10bikes

MMM, my initial thought is that its the little end that has play in it, i have decided that i will strip it down next year once i have finish green laning this winter.
Cheers mark

Let us know what you discover

**tommy10bikes** · #10 22 Oct 2009

Will do, i have a tt600 59X model to do first so at least i will have a dry run.
cheers mark