i whant to know if this is normal its a built gsr or its the rods or it needs valve ajustment, it only sounds like this around 1k rpm if i revit it sounds normal, i only drive it for about 6 days, let me know what yah think

http://youtube.com/watch?v=TWYfyt56h9M

 

one thing that a notice today is that it only sounds like that when its warmed up at 1k and at 1k when its cold it dosent sound like this

 

the sound on the video is not to clear but it does sound like rod knock, but...
try narrowing it down by cutting spark to each cylinder to see if it stops, change the oil and use a thicker viscosity to see if it stops.