Knocking When oil pressure high?

[moto x]

Alright So I Have Rebuilt engine New rod and main bearings new pistons, Ballence shafts removed. Its got almost 4000 miles on it. Now when I Cold start it The oil pressure norrally stays a bit high till It warms up. Lately After I warm it up and Ill be Driving it and Alls Good No Knocking nothing. Ill stop at a Light And Go to Take Off the And Its Makes a loud knocking noise Till I keep the Rpms above 2500 For a few seconds. The knocking goes away. In the time that the Knocking accures The oil pressure is at 75 psi As soon as the knocking goes Away the oil pressure drops down to 50. ANd the pressure drops From 75 to 50 at a consint rpm of 2500 Or more. What Could be causing this? I dont want to ruin my fresh engine because of this? Thanks in advanced

 

[pj91gsx]

did you set the ignition timing yet? It should be 5 degrees before top dead center. The knocking you can hear or the kind you cant?

 

[moto x]

The knocking you can hear

 

[pj91gsx]

Is it like spun rod rod bearing knock? rev the motor to where you can hear the knock. the put each plug wire and when it stops thats the cylinder you have a spun rod bearing in.

 

[moto x]

If It was a spun bearing woulnt it do it all the time? Cause It will on ly do it for 5 seconds or so When I rev it to 2500 Than it goes away. And It knocks When the oil pressure is At 75 But was soon as knocking goes away the pressure Drops to 50 at 2500 rpms. My pressure When driving has always been around 50. Till this problem. ( unless Of course Im At high rpms than it more like 80 to 100psi When racing)