Life span timing chain
 

My bike makes more sound than it did in the beginning. It sounds like some metal balls at low rpm. First I thought about the big end, but there is no metal in the oil nor in the oilfilter. Adjusted the valves and the cam looks normal. Now I am thinking of the timing chain. What is the life span of it, can it make a knocking sound at low rpm, I always thought it was more of a rattle sound.

BTW it has 60.000km on it.

Interested in the out come of this, my XTR's got 42kmiles and has similar rougher sounding. Seemed to be a bit quieter when it had a service including values checked about 4k miles ago, which seems wierd to me.

Nobody? I will also post it in XT660R.

I'm still on original camchain at 57,000+ miles but it seemed tight enough when I checked at the weekend.

Problem I always had with previous bikes (all big singles) was the clutch basket damping springs going slack causing major clutch rattle and clatter on take up.

Listening to some comments, do the following test:

Listen to the noise with the clutch out in neutral, and with the clutch in, see if there's a difference

I would expect a XT's timing chain to last more than 80K miles, depending on how the bike is serviced & ridden.

Oke, that was the more or less what I expected.

No change in sound with or without the clutch engaged.

I will make a movie and post it.

Here are my video:
http://www.youtube.com/watch?v=rjYYt1DstIU
http://www.youtube.com/watch?v=JegGVCO36lo

That doesn't sound ... uh. . . . . 'healthy'.

What about oil consumption? Tilting piston???? Wouldn't expect it though... not at that mileage...

... but still better then ... indeed ... your big end.... wouldn't expect that either ...

Use a screwdriver as a stethoscope to localize the source of that sound more accurate.

HJ

If your bike is still under warranty take it straight back to Yamaha for repairs. Otherwise you best strip the motor to find the problem, I would not be riding it.
:Suspicious_DXD5FP: