Rzr-s 800 Motor making a rattle noise help

I thought it was my clutch so I rebuilt my clutch and this rattle clacking noise comes from in between the clutch and the engine with the clutch on it's loud noise when the clutch is off noise still does it but not as loud

The rattling clacking noise only does it at a certain rev when I seem to gun it it stops but if I keep it at a paste the rattle is their?

Was told it can be a bent rod bad bearings possibly mest up crank shaft
Any experiences ?

You can hear the vid when I'm slowly driving it it's doing the rattle but when I gun it it stops