My 650 -05 (164 hours) had a broken exhaust valve spring with a crooked valve as a result. Brought the engine to KEVA-motor (my closest Husa mechanic in southern Sweden) and their assessment was no damage to piston (a tiny scratch only) nor crank. Solution was to change all valve springs, new valve and seat, cam-chain and spark plug. Also got a new e-decomp spring.
When I got the engine back I put it back in the frame, filled oil and coolant and fired it up with the button. The e-starter worked like a charm (thanks to the new spring), both cold and hot. The valve train was significantly quieter and everything worked like a charm (silly grin every ride).
After about the 4th driving hour, on a twisting tarmac, mid revs and 5th gear, I noticed an increased vibration from the foot pegs and when I stopped and had the engine idling there was a louder, high pitch, valve train clatter that was new. There was some oil on the left side cover but I blame the weep hole (has happened before on longer rides)
Back in the garage my first thought was to adjust the valves but since the tank and radiator was off I decided to open the valve cover to check for any visible trouble. Cams look and feel fine, so does cam- and rocker bearings. The cam chain is only 4 hours old and it's ok and the tensioner has 6 clicks left. The rollers look ok with no radial play but there is some axial play on both. Are they the culprit or is there an other obvious reason for increased vibrations and clatter noise? Like big end bearings? Will check oil plug magnet today so I don't know the status there.
When I got the engine back I put it back in the frame, filled oil and coolant and fired it up with the button. The e-starter worked like a charm (thanks to the new spring), both cold and hot. The valve train was significantly quieter and everything worked like a charm (silly grin every ride).
After about the 4th driving hour, on a twisting tarmac, mid revs and 5th gear, I noticed an increased vibration from the foot pegs and when I stopped and had the engine idling there was a louder, high pitch, valve train clatter that was new. There was some oil on the left side cover but I blame the weep hole (has happened before on longer rides)
Back in the garage my first thought was to adjust the valves but since the tank and radiator was off I decided to open the valve cover to check for any visible trouble. Cams look and feel fine, so does cam- and rocker bearings. The cam chain is only 4 hours old and it's ok and the tensioner has 6 clicks left. The rollers look ok with no radial play but there is some axial play on both. Are they the culprit or is there an other obvious reason for increased vibrations and clatter noise? Like big end bearings? Will check oil plug magnet today so I don't know the status there.
