Sudden terrible noise

[overboostin]

Bike was running fine then I started it up one morning and heard this:

http://i1324.photobucket.com/albums/u601/bikeman123/DF621111-ABCE-4A12-9DC3-68DE8B74A3DB-7082-0000067775EFD4A6.mp4

Any idea what's causing it and how much of a bind I'm in?

[tkent02]

Pull the valve cover and find out.

[overboostin]

The cover was already off everything looked fine

[tom203]

The cover was already off everything looked fine

So you took cover off to investigate the noise, or you were working on the valves and the noise appeared after cover was reinstalled ??
How about tach drive engagement?

[tatu]

Bike was running fine then I started it up one morning and heard this:

http://i1324.photobucket.com/albums/u601/bikeman123/DF621111-ABCE-4A12-9DC3-68DE8B74A3DB-7082-0000067775EFD4A6.mp4

Any idea what's causing it and how much of a bind I'm in?

Are you saying that it was fine when you put it away last time and on start up next time it made that noise?

That noise sounds expensive like a piston hitting the the head, take out the plugs and rotate the crank by hand and feel with a rod down the plug hole with the piston at mid point, there should be no lash back and foward on the crank spanner.

[overboostin]

So you took cover off to investigate the noise, or you were working on the valves and the noise appeared after cover was reinstalled ??
How about tach drive engagement?

Noise happened before I took the cover off.

Tach seems fine

[overboostin]

Are you saying that it was fine when you put it away last time and on start up next time it made that noise?

That noise sounds expensive like a piston hitting the the head, take out the plugs and rotate the crank by hand and feel with a rod down the plug hole with the piston at mid point, there should be no lash back and foward on the crank spanner.

Yeah bike sat without making that noise then the next morning the noise started.

[tatu]

On start up, was the noise there instantly or did it come on over time? Even just a few seconds? That sounds like engine speed noise to me. (opposed to half speed indicating cam problems)

[overboostin]

It was there instantly. Seem to run fine, parked it. Started up the next morning and it was there

[JEEPRUSTY]

Is the cover still off? Did you adjust the valves and loose a fastener due to lack of proper tightenening?

[overboostin]

So it's definitely coming from the clutch area. Thoughts on what it could be? Noise is no different in gear or neutral

[tkent02]

OK, pull the clutch cover and find out.

Maybe the big clutch hub nut fell off.

[Freebeer]

What did you ever find out about the noise?